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137 Chapter 6 Opportunities for PHYSICAL ACTIVITY & Diabetes INSIDE Highlights Introduction List of Exhibits Exhibits and Findings Discussion Conclusions and Implications Appendix 6.A – Research Methodology References AUTHORS Jane Y. Polsky Jonathan T. Weyman Maria I. Creatore Anne-Marie Tynan Peter Gozdyra Richard H. Glazier Gillian L. Booth

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Page 1: Diabetes Atlas for the Region of Peel - Chapter 6 ... · of diabetes. Areas of lowest physical activity generally had the highest rates of diabetes and many areas with higher levels

137

Chapter6

Opportunities for Physical activity & DiabetesinsidE

Highlights

Introduction

List of Exhibits

Exhibits and Findings

Discussion

Conclusions and Implications

Appendix 6.A – Research Methodology

References

autHors

Jane Y. Polsky

Jonathan T. Weyman

Maria I. Creatore

Anne-Marie Tynan

Peter Gozdyra

Richard H. Glazier

Gillian L. Booth

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HigHligHtsissue• Regularphysicalactivityisessentialforthe

preventionandmanagementofdiabetes.Despitedecadesofpubliccampaignstopromotephysicalactivity,levelsofactivityintheCanadianpopulationremainlow.

• Researchersandplannersrecentlybegantodirectattentiontotherolethatneighbourhoodopportunities,suchasparksandrecreationcentres,playinfosteringphysicalactivity.

• Thepurposeofthischapteristoexaminethedistributionofandaccesstoparks,schoolsandrecreationfacilitiesacrossPeel.Thischapteralsopresentslevelsofleisure-timephysicalactivityundertakenforrecreationorexercisepurposes,andassociatedprevalenceratesofdiabetes.

Key Findings• Accesstoparksandschoolswasgenerally

goodandsimilaracrossresidentialareasinPeel.However,thedensityofparkareavariedsignificantly.InmanyareasofMississaugaandcentralBrampton,residentshadrelativelylittleparkareapercapita(comparedwiththerestofPeel)andwerefarfromalargerparkspace.Thismaybedue,inpart,toashiftindesignfromsmallerneighbourhoodparkstofewer,larger“destination”parkfacilities.

• Publicrecreationfacilitiesweremuchlessevenlydistributed.Becausemanyfacilitieswereclusteredincertainlocations,localresidentshadverygoodaccesstoanumberofdifferentfacilities,whilemanymoreresidentsofotherareaswerefarfromanyrecreationfacility.

• Therewasnoclearspatialcorrespondencebetweenaccesstoparks,schoolsandrec-reationfacilities,andratesofdiabetesorphysicalactivity.

• AbouthalfofPeelresidentswereatleastmoderatelyphysicallyactiveduringtheirleisuretime.LevelsofphysicalactivitywerehighestinpartsofMississaugaandCaledon;

theywerelowestamongresidentsofeastCaledon,BramptonandcentralandnortheastMississauga.

• Levelsofphysicalactivitywererelatedtoratesofdiabetes.Areasoflowestphysicalactivitygenerallyhadthehighestratesofdiabetesandmanyareaswithhigherlevelsofphysicalactivityhadlowerratesofdiabetes.

implications • InPeel,levelsofphysicalactivityweregener-

allyunrelatedtohowcloseresidentslivedtophysicalactivityresources.Thisimpliesthatgoodspatialaccesstorecreationresourcesmaynotbeenoughtoencouragelocalresidentstobemorephysicallyactive.

• Creativeinitiativestoincreaselevelsofphysi-calactivitywillbeveryimportantgiventherelativelylowlevelsofactivityinthegeneralpopulationandahighproportionofresidentsathighriskofdiabetesduetotheirethnicbackground.Evensmallincreasesindailylevelsofactivitycanplayalargeroleinde-creasingtheriskoftype2diabetes,particularlyamonghigh-riskindividuals.

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• GiventherapidlygrowingpopulationinPeelandrisingratesofdiabetes,itisessentialthatvariouslevelsofgovernment,urbanplannersandhealthofficialsworktogethertocreateampleopportunitiestosupportandencouragehigherlevelsofdailyphysicalactivityamongPeelresidents.

• Thehealthneedsandtheethnoculturalpreferencesoflocalpopulationsubgroups,aswellastheexistingavailabilityofappropriateresources,shouldbeconsideredwhenpoliciesandprogramsthatsupporthealthylivingarecreated.

introductionPhysical activity and HealthPhysicalactivityplaysanessentialroleinpreventingmanychronicdiseases,particularlycardiovasculardisease,type2diabetesandsomecancers.1Asmanyasoneinfivediagnosesoftype2diabetesinCanadamaybeduetoinadequatelevelsofphysicalactivity.2

Mostpeopleknowthatphysicalactivityhelpstomaintainahealthybodyweight.Maintainingahealthybodyweight,inturn,helpstopreventthedevelopmentofchronicdiseases.Itisalsoimpor-tanttoknowthatbeingphysicallyactivehasanindependenteffectonhealth–fortwopeopleofthesamebodyweight,themorephysicallyactivepersonwillhavealowerriskofdiseasethanthepersonwhoislessphysicallyactive.3,4

Thetermphysicalactivityencompassesavarietyofactivitiesthatpeopleundertakeeitherforutilitarianpurposes(i.e.,physicalactivitythatoccursathome,atworkorduringtravel,suchaswalkingtogetsomewhere)orforrecreationorexercisepurposesduringleisuretime(e.g.,playingbasketballorjogging).Formostpeople,themajorityoftheirdailyactivitiesfallintothefirstcategory.

How physically active are canadians?NewinternationalandCanadianphysicalactivityguidelinesrecommendthatadultsshouldaccumulateatleast150minutesofmoderate-to

vigorous-intensityphysicalactivityaweek,inboutsof10minutesormore,inordertoachievehealthbenefits.5MostCanadiansdonotachievesufficientlevelsofactivitydespitedecades-longeffortstopromotephysicalactivityinthegeneralpopulationwithmasseducationalcampaignslikeParticipACTION.In2007–09,only15%ofadultsreachedtherecommendedlevelofactivity.6Menwereconsistentlymoreactivethanwomenandlevelsofphysicalactivitydeclinedwithadvancingageandincreasingbodyweight.Mostindica-torsoffitness,includingflexibilityandmusclestrength,declinedbetween1981and2007–09,particularlyamongyoungadultsaged20to39.7

Forchildrenandyouth,regularphysicalactivityisessentialforhealthygrowthanddevelopment–themoreactiveayoungperson,thegreaterthehealthbenefits.Canadianguidelinesrecommendthatchildrenandyouth(betweenfiveand17yearsofage)accumulateatleast60minutesofmoderate-tovigorous-intensityphysicalactivityeveryday.5In2007–09,only7%ofchildrenandyouthattainedtheserecommendedlevelsofphysicalactivity.8Boysweremoreactivethangirls,with9%ofboysandonly4%ofgirlsachiev-ingtherecommendedlevelsofactivity.

Physical activity and diabetes Inadequatelevelsofphysicalactivitycancausedecreasedsensitivitytoinsulinandglucoseintolerance–bothofwhichareimportantfactorsinthedevelopmentandcontrolofdiabetes.9,10Inindividualsathighriskfortype2diabetes(i.e.,thosewithimpairedglucosetoleranceorpredia-betes),evensmallincreasesinlevelsofphysicalactivityhavethepotentialtosignificantlyslowdownorpreventtheprogressiontotype2diabetes.9,11Participationinregularphysicalactivityandchangesindietplayessentialrolesinreducingtheoccurrenceoftype2diabetesinhigh-riskgroupsbyasmuchas60%.12

Forindividualslivingwithdiabetes,regularphysicalactivity,dietandmedicationplaykeyrolesinoptimallymanagingthisconditionandpreventingcomplications.Regularphysicalactivityhelpstoreducetheriskofcardiovasculardisease,othercomplicationsandprematuredeath

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amongthoselivingwithdiabetes.10,13Asaresult,ClinicalPracticeGuidelinespublishedbytheCanadianDiabetesAssociationrecommendthatadultswithdiabetesundertakeregularaerobicactivity(i.e.,atleast150minutesofmoderate-tovigorous-intensityactivity,suchasbriskwalkingorjogging,aweek),aswellasresistancetrainingexercisesthreetimesaweek.10

Theamountoftimedevotedtosedentarybe-haviourslikesittingforlongperiodsorwatchingtelevision–independentofaperson’slevelsofphysicalactivityanddiet–candirectlyincreasetheriskofobesity,type2diabetesandprematuredeath.4,14,15Thesefindingsareofgreatconcerngiventhatin2007–09,mostCanadianadultsandyoungpeoplespentthemajorityoftheirwakinghoursinsedentaryactivities.6,8Toaddressthesetroublingtrends,Canadianexpertsrecentlydevelopedaseparatesetofguidelinesspecifictosedentarybehaviourforchildrenandyouth.16Theseguidelinesrecommendthatchildrenandyouthlimitnotonlytheamountofleisuretimetheyspendinfrontofascreentonomorethantwohoursaday,butalsothetimetheyspendsittingincarsandindoorsthroughouttheday(sedentarybehaviourguidelinesforCanadianadultsarenotcurrentlyavailable).

Physical activity and the EnvironmentLevelsofphysicalactivitydependnotonlyonanindividual’spropensitytobeactive,butalsoonthesurroundingphysicalenvironment.Forexample,livinginsuburbancommunitieshasbeenassociatedwithagreaterrelianceoncars,lowerlevelsofwalkingandhigherlevelsofover-weight/obesitycomparedwithlivingincompactcities.17-19(foradetaileddiscussionaboutfeaturesofneighbourhooddesignrelatedtowalkingandbicyclingfortransportation,seeChapter5).Inadditiontourbandesignfeatureslikethepres-enceofsidewalksandnearbyshopsandservices,goodaccesstoparksandrecreationcentresclosetohomealsoplaysaroleindeterminingthedura-tionandfrequencyofphysicalactivity.20-22Forinstance,adultswholivednearmoreparkswithinonekilometreoftheirhomeinWaterloo,Ontarioweremorelikelytomeetphysicalactivityrecom-mendationsbywalking,bicyclingorengaginginothertypesofphysicalactivityinnearbyparksorelsewhereintheneighbourhood.23Eachad-ditionalhectareofparklandnearhomewasalsorelatedtohigherlevelsofmoderate-to-strenuousphysicalactivityundertakenwithinanearbypark.

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Betteraccesstoneighbourhoodopportunitiesforphysicalactivityisoftenrelatedtohigherlevelsofactivityamonglocalresidents,buttheseassociationsarenotalwaysconsistent.Rather,activitypatternsvarybytypeofneighbourhoodamenity,howresearchersmeasureaccessandbytypeofphysicalactivity.Outdoorspaces,includ-ingtrails,openspaces,golfcoursesandnaturalsettings(e.g.,beaches),aremorestronglyrelatedtolevelsofvarioustypesofphysicalactivity(i.e.,leisure-timeorutilitarian)amonglocalresidentsthanindoorsettingssuchasrecreationcentresandexerciseandsportsfacilities.21Proximityseemstoplayamoreconsistentrole;livingclosertoparksandvariousrecreationsettingswasassociatedwithincreasedlevelsofvarioustypesofphysicalactivity.Goodaccesstoparksandrecreationsettingsismorecommonlyrelatedtophysicalactivityforexerciseandutilitarianpurposes–mostcommonly,walking–ratherthanforrecreation.22

Neighbourhoodamenitiesmayalsoplayaroleinhowactivechildrenandyouthare.Childrenweremoreactiveifparentsfelttheyhadgoodaccesstorecreationfacilitiesandspaceswithintheirneighbourhood.24-26Forexample,childrenlivinginNovaScotianeighbourhoodswithbetteraccesstoplaygrounds,parksandrecreationfacilitiesweremoreengagedinstructuredsportsactivities,hadlesstelevisionandvideogametime,andhealthierbodyweights.25InLondon,Ontario,youthaged11to13livingnearmorepublicrecreationopportunitiessuchasswim-mingpools,parks,recreationcentresandbikepathsweremorephysicallyactivethanyouthwhoseneighbourhoodscontainedfewerofsuchamenities.26

diabetes and the Environment Investigationoflinksbetweenthephysicalenvi-ronmentanddiabetesisarelativelynewareaofstudy.InthreedifferentareasoftheUnitedStates(U.S.),adultswholivedinneighbourhoodswithbetteraccesstoopportunitiesforphysicalactivity–suchasparksandtrails–werelesslikelytohaveinsulinresistancethanresidentsofareaslessfriendlytophysicalactivity.27Thefactthatadults

wholivedinthemoreactivity-friendlyareasweremorephysicallyactiveaccountedforsomeofthisassociation.Adultswholivedinneighbourhoodswithbetterresourcesforphysicalactivityandhealthyeatingwerelesslikelytodeveloptype2diabetesduringafive-yearperiodcomparedwiththosewholivedinneighbourhoodswithworseaccesstosuchresources.28

Neighbourhoodsthatmakeiteasyforresidentstobephysicallyactiveonadailybasisarealsoimportantforpeoplelivingwithdiabetes.Adultslivingwithtype2diabetesinAlbertawhofeltthattheirneighbourhoodsweremore“walkable”(e.g.,withmanyshopsandlow-costrecreationfacilitieswithina10-to15-minutewalkfromhome)weremorelikelytoachievetherecom-mendedlevelsofphysicalactivitybywalkingmorefrequentlytogettoandfromplaces.29

Inthischapter,geographicaccesstoseveralopportunitiesforphysicalactivityacrossPeelisexamined.Easyaccesstophysicalactivity

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orresourcesisimportantbecauseitmayen-couragelocalresidentstousetheseresourcesmorefrequently,aswellasuseactivemeansoftransportation(i.e.,walkingorbicycling)toreachthesevenues.Ratesofphysicalactivityundertakenforleisure(i.e.,forrecreationorexercisepurposes,andnotrelatedtowork)andtheprevalenceofdiabetesareexamined.Inthischapter,ameasureofphysicalactivityderivedfromtheCanadianCommunityHealthSurvey,whichaskedrespondentsabouttheirparticipationinvariousleisure-timeactivitiessuchaswalkingforexercise,gardeningoryardwork,bicycling,playingbasketball,orjoggingorrunning,wasused.Becausethesurveyquestioninvolvedtherespondents’owninterpretationofwhatconsitututesleisuretime,somepeople’sresponsesmayhaveincludedsomeamountofactivetransportation,suchaswalkingorbicy-clingtogettoandfromplaces.Unfortunately,intheseanalyses,aseparatemeasureoflevelsofutilitarianphysicalactivity(includingactivetransportation)amongPeelresidentswasnotavailable(seeChapter5foraveragewalkingandbicyclingtripsinPeel,whichareproxymeasuresofactivetransportation).Finally,thespecificresourcesforphysicalactivityunderstudyinthischapterincludeschools,parksandpublicrecreationfacilitiessuchascommunityrecreationcentresandsportsarenas.Whilenoteveryresourceissuitableforalllocalresidents,togethertheyconstituteanimportantsourceofindoorandoutdooropportunitiesforphysicalactivityforcommunities.

list oF ExHiBitsExhibit 6.1Locationsofparks[2009]andschools[2009]inPeelregion

Exhibit 6.2Parkareainsquarekilometres(sqkm)[2009]per10,000population[2006],bycensustract[2006],inPeelregion

Exhibit 6.3Parks[2009]andschools[2009]per10,000population[2006],bycensustract[2006],inPeelregion

Exhibit 6.4Locationsofpublicrecreationfacili-ties[2010]inPeelregionandadjacentareas*

Exhibit 6.5Locationsofprivaterecreationfacilities[2010]inPeelregionandadjacentareas*

Exhibit 6.6Publicrecreationfacilities(includ-ingcommunitycentres,arenasandswimmingpools)[2010]per10,000population[2006],bycensustract[2006],inPeelregion

Exhibit 6.7Modelledtraveldistancealongtheroadnetwork[2009]tothenearestlocationofapark[2009]orschool[2009],inPeelregion

Exhibit 6.8Modelledtraveldistancealongtheroadnetwork[2009]tothenearestlocationofapublicrecreationfacility(includingcommunitycentres,arenasandswimmingpools)[2010],inPeelregion

Exhibit 6.9Spatialrelationshipbetweentheaverageroadnetworkdistancetothenearestpark[2009]orschool[2009]andage-andsex-standardizeddiabetesprevalenceratio-ratios*[2007],bycensustract[2006],inPeelregion

Exhibit 6.10Spatialrelationshipbetweentheaverageroadnetworkdistancetotherecreationfacility[2010]andage-andsex-standardizeddiabetesprevalenceratio-ratios*[2007],bycensustract[2006],inPeelregion

Exhibit 6.11.Age-andsex-standardizedrateofmoderate-to-highphysicalactivity*inleisuretimeper100peopleaged12+[2003–08]andage-andsex-standardizeddiabetesprevalenceratesper100personsaged20+[2007],byPeelHealthDataZone(PHDZ)[2006],inPeelregion

Exhibit 6.12.Age-andsex-standardizedrateofhighphysicalactivity*inleisuretimeper100peopleaged12+[2003–08]andage-andsex-standardizeddiabetesprevalenceratesper100personsaged20+[2007],byPeelHealthDataZone(PHDZ)[2006],inPeelregion

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ExHiBits and Findings

410

10

9

C A L E D O N

B R A M P T O N

Findings:

La k e O n t a r i o

Schools were generally well distributedacross residential areas. Only small pockets oflimited availability were found across the region,particularly in northeast Brampton and in southMississauga north of the QEW.

Larger park areas were located in north Caledon, north and east Brampton, and central and west Mississauga (along the Credit River).Many smaller parks were scattered throughout the region.

407

410

10

403

401

QEW

427

409

C A L E D O N

B R A M P T O N

M I S S I S S A U G A

Locations of parks and schools

Residential AreaOther Land Use

Park or Recreational Area

School (primary or secondary)

Census Tract Boundary

Municipal Boundary

Industrial Area

Freeway or Highway

International Airport

0 5 10 km

0 2.5 5 km

Exhibit 6.1. Locations of parks [2009] and schools [2009] in Peel region

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Findings:

• More park area per capita was concentrated in north Caledon, outlying areas of Brampton and along the Credit River in Mississauga.

La k e O n t a r i o

407

410

10

403

401

QEW

427

409

Park area in sq. km per 10,000 population

0.0 – 0.50.6 – 1.01.1 – 2.02.1 – 5.05.1 – 25.4

Census Tract Boundary

Municipal Boundary

Industrial Area

Freeway or Highway

International Airport

0 5 10 km

0 2.5 5 km

Exhibit 6.2. Park area in square kilometres (sq km) [2009] per 10,000 population [2006], by census tract [2006], in Peel region

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Findings:

The majority of census tracts throughout Peel had 10 or more parks and schools per 10,000 population.

A number of census tracts in east Caledon, central andsouthwest Brampton, and various parts of Mississauga had lower concentrations of parks and schools (compared with the rest of Peel).

La k e O n t a r i o

407

410

10

403

401

QEW

427

409

Parks and schools per10,000 population

0.0 – 5.05.1 – 10.010.1 – 20.020.1 – 40.040.1 – 80.1

Census Tract Boundary

Municipal Boundary

Industrial Area

Freeway or Highway

International Airport

0 5 10 km

0 2.5 5 km

Exhibit 6.3. Parks [2009] and schools [2009] per 10,000 population [2006], by census tract[2006], in Peel region

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Findings:

La k e

O n t a r i o

Public recreation facilities were fairly widely distributed across Peel’s residential areas. A larger number of facilities were concentrated in central Brampton compared with the rest of Peel.

A few pockets of residential areas in northeast Brampton and in parts of Mississauga lacked a nearby public recreation facility.

* Some facilities in areas adjacent to Peel are not shown on this map to improve readability. These adjacent locations were included in the analyses shown in Exhibits 6.8 and 6.10.

407

410

10

403

401

QEW

427

409

410

10

9

Public Recreation Facility,Community Centre orSports Centre

Recreation/CommunityCentre, Pool and Arena

Swimming Pool or AquaticCentre

Arena

Locations of public recreation facilities

Residential AreaOther Land Use

Census Tract Boundary

Municipal Boundary

Industrial Area

Freeway or Highway

International Airport

0 5 10 km

0 2.5 5 km

Exhibit 6.4. Locations of public recreation facilities [2010] in Peel region and adjacent areas*

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Findings:

La k e

O n t a r i o

Private recreation facilitieswere clustered in east Caledon(near Bolton), central Brampton andin several portions of Mississauga. Theywere generally located along major roads andoutnumbered public recreation facilities (Exhibit 6.4).

In Brampton and Mississauga, many private recreationfacilities were concentrated within or near industrial areas.

* Some facilities in areas adjacent to Peel are not shown on this map to improve readability.

407

410

10

403

401

QEW

427

409

410

10

9

Locations of private recreation facilities

Private Recreation Facility(e.g., gym, health club,martial arts, yoga studio)Golf or Country Club

Horseback Riding Facility

Sailing Club

Arena

Residential AreaOther Land Use

Census Tract Boundary

Municipal Boundary

Industrial Area

Freeway or Highway

International Airport

0 5 10 km

0 2.5 5 km

Exhibit 6.5. Locations of private recreation facilities [2010] in Peel region and adjacent areas*

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Findings:

La k e O n t a r i o

Certain neighbourhoods in northwest Caledon, west and central Brampton, and central and southeast Mississauga had the highest density of public recreation facilities per capita (compared with the rest of Peel).

A much larger number of census tracts throughout Peel had few or no facilities per capita. However, most of these areas had a relatively high density of parks and schools (Exhibit 6.3).

407

410

10

403

401

QEW

427

409

Public recreation facilities per10,000 population

0.01.0 – 2.02.1 – 4.04.1 – 6.06.1 – 10.3

Census Tract Boundary

Municipal Boundary

Industrial Area

Freeway or Highway

International Airport

0 5 10 km

0 2.5 5 km

Exhibit 6.6. Public recreation facilities (including community centres, arenas and swimmingpools) [2010] per 10,000 population [2006], by census tract [2006], in Peel region

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Findings:

La k e

O n t a r i o

In central Brampton and throughout Mississauga, most neighbourhoods had good access along the street network to a park or school (1,000 metres or less).

Distance to the nearest park or school appeared to be longer (2 km or more) in most areas of Caledon, outlying areas of Brampton and in some parts of Mississauga (particularly along the major highways). However, most of these areas were non-residential (e.g., rural, undeveloped or commercial areas).

407

410

10

403

401

QEW

427

409

Modelled distance (m) to nearest park or school

501 – 1,0001,001 – 2,000

0 – 500

2,001 – 5,0005,001 – 8,009

Census Tract Boundary

Municipal Boundary

Industrial Area

Freeway or Highway

International Airport

0 5 10 km

0 2.5 5 km

Exhibit 6.7. Modelled travel distance along the road network [2009] to the nearest location of a park [2009] or school [2009], in Peel region

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Findings:

La k e

O n t a r i o

Most residents of Peel did not live within walking distance of the nearest recreation facility. Residents of many portions of Mississauga, outlying areas of Brampton, and south and northeast Caledon were at least 2 km away from the nearest recreation facility.

However, a number of areas scattered throughout Peel had relatively good access to a public recreation facility (within 1,000 metres or less).

Access to recreation facilities was poorer than access to parks and schools, particularly in Mississauga and in southwest and northeast Caledon (Exhibit 6.7).

407

410

10

403

401

QEW

427

409

Modelled distance (m) to nearest public recreation facility

501 – 1,0001,001 – 2,000

0 – 500

2,001 – 5,0005,001 – 15,179

Census Tract Boundary

Municipal Boundary

Industrial Area

Freeway or Highway

International Airport

0 5 10 km

0 2.5 5 km

Exhibit 6.8. Modelled travel distance along the road network [2009] to the nearest location of a public recreation facility (including community centres, arenas and swimming pools) [2010], in Peel region

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Findings:

La k e

O n t a r i o

A small number of neighbourhoods innortheast Brampton and adjacent to thelarge industrial area in northeast Mississauga hadhigh rates of diabetes (at least 20% higher than the GTA)and were located relatively far from a park or school.However, most high-diabetes areas in these cities had verygood access to parks and schools.

In south Mississauga, several adjacent areas with lower rates of diabetes(at least 20% below the GTA) had very good access to the nearest park or school.

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10

403

401

QEW

427

409

Diabetes Rate-ratio*

66 3,8491,000500

≥ 1.20

≤ 0.80

0.81 – 1.19

Avg. distance (m) tonearest park or school

DIABETESHIGH

*Rate-ratio calculated as:

Overall Greater Toronto Area (GTA) diabetes rate: 9.0%

census tract rate for pop. aged 20+GTA rate for pop. aged 20+

Census Tract Boundary

Municipal Boundary

Industrial Area

Freeway or Highway

International Airport

0 5 10 km

0 2.5 5 km

Exhibit 6.9. Spatial relationship between the average road network distance to the nearestpark [2009] or school [2009] and age- and sex-standardized diabetes prevalence rate-ratios* [2007], by census tract [2006], in Peel region

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Findings:

La k e

O n t a r i o

A number of high-diabetes neighbourhoods (with rates at least 20% higher than in the GTA) in central and northeast portions of Brampton and Mississauga were located far (2 km or further) from a public recreation facility.

However, residents of many other high-diabetes areas in these cities lived within medium or close proximity of a public recreation facility.

Some areas in north and west Caledon and in south Mississauga had both lower rates of diabetes (at least 20% below the GTA) and long distances to the nearest recreation facility.

407

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10

403

401

QEW

427

409

Diabetes Rate-ratio*

627 9,7852,0001,000

≥ 1.20

≤ 0.80

0.81 – 1.19

Avg. distance (m) tonearest public rec. facility

DIABETESHIGH

*Rate-ratio calculated as:

Overall Greater Toronto Area (GTA) diabetes rate: 9.0%

census tract rate for pop. aged 20+GTA rate for pop. aged 20+

Census Tract Boundary

Municipal Boundary

Industrial Area

Freeway or Highway

International Airport

0 5 10 km

0 2.5 5 km

Exhibit 6.10. Spatial relationship between the average road network distance to the nearest public recreation facility [2010] and age- and sex-standardized diabetes prevalence ratio-ratios* [2007], by census tract [2006], in Peel region

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49.3

32.6

Findings:

La k e

On t a r i o

Self-reported levels of physical activity were lowest in east Caledon (near Bolton) and in northeast and southwest Brampton. Only about a third of residents in these areas reported being at least moderately active.

With the exception of east Caledon, PHDZs with lower levels of physical activitycorresponded to areas with high rates of diabetes.

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401

QEW

427

409

49.3

47.4

47.4

43.2

45.3

45.335.5

49.4

34.1

48.2

47.3

54.4

56.7

48.355.9

42.7

Moderate-to-high physical activity* rate per 100 aged 12+

32.6 – 40.040.1 – 45.045.1 – 50.050.1 – 56.7

*Levels of physical activity equivalent to walking 30 to 60 minutes a day or more.

Diabetes rate per 100 aged 20+

7.1 – 9.19.2 – 10.9

11.0 – 12.9

Peel Health DataZone (PHDZ) Boundary

Municipal Boundary

Industrial Area

Freeway or Highway

International Airport

0 5 10 km

0 2.5 5 km

Exhibit 6.11. Age- and sex-standardized rate of moderate-to-high physical activity* in leisure time per 100 people aged 12+ [2003–08] and age- and sex-standardized diabetes prevalence rates per 100 persons aged 20+ [2007], by Peel Health Data Zone (PHDZ) [2006], in Peel region

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410

10

9

27.320.1

Findings:

La k e

On t a r i o

Across Peel, the proportion of residents who reported high levels of physical activity during leisure time was generally low but varied considerably across PHDZs from about 15 to 30 per 100 people.

Levels of physical activity were highest in most parts of Mississauga and Caledon.

Especially low activity rates were reported in Brampton (particularly in the southwest and northeast portions), in east Caledon, and in central and northeast Mississauga. Except for east Caledon, these regions corresponded to areas with high rates of diabetes.

407

410

10

403

401

QEW

427

409

27.3

23.0

23.0

21.4

22.5

22.515.2

28.0

28.4

14.6

25.9

25.9

27.9

23.929.6

23.5

High physical activity* rate per 100 aged 12+

14.6 – 20.020.1 – 25.025.1 - 29.6

*Levels of physical activity equivalent to walking an hour a day or jogging for 20 minutes a day.

Diabetes rate per 100 aged 20+

7.1 – 9.19.2 – 10.9

11.0 – 12.9

Peel Health DataZone (PHDZ) Boundary

Municipal Boundary

Industrial Area

Freeway or Highway

International Airport

0 5 10 km

0 2.5 5 km

Exhibit 6.12. Age- and sex-standardized rate of high physical activity* in leisure time per 100 people aged 12+ [2003–08] and age- and sex-standardized diabetes prevalence rates per100 persons aged 20+ [2007], by Peel Health Data Zone (PHDZ) [2006], in Peel region

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discussion

Availability of Parks, Schools and Recreation SpacesParks and schools Parksystems(e.g.,schoolparks,cityparksandparkettes,conservationareas,provincialparks)arepopularrecreationdestinationsforPeelresidents.Theyservenotonlylocalresidents,butalsopeoplewholiveoutsidetheneighbourhood.Largeparksoftenserveadifferentpurposefromlocal,smallgreenspaceslocatedwithincommu-nities.30Largeparksarefrequentlythelocationforcommunity-basedfairs,picnics,walks,bicycleroutesandsportingevents.Smallergreenspacesaretypicallyusedaschildren’splaygroundsandfordog-walking.30

Sincemostschoolshaveyardsorplaygroundsthatarereadilyaccessibletothegeneralpublic,theycanalsoserveasimportantlocalsettingsforresidentstoengageinlightorvigorousphysicalactivity.30Peelschoolsweredistributedfairlyevenlythroughouttheregionwiththegreatma-jorityofschoolslocatedinsideresidentialzones.

ParksandschoolswerefairlyevenlydistributedthroughoutresidentialareasinPeel.However,parkareapercapitavariedsignificantly:anumberofareasalongtheCreditRiverandinsouthMississauga,infringeareasofBramptonandinnorthCaledonhadrelativelyampleparkareapercapita.However,inmanyotherareasofPeel,particularlyaroundMississaugaCityCentre,inwest,eastandnortheastMississauga,andthroughoutcentralBrampton,residentshadrelativelylittleparkareapercapitacomparedwithotherareasofPeel.Thismaybedue,inpart,toashiftinurbandesignfromsmallerneigh-bourhoodparkstofewer,larger“destination”parkfacilities.Nonetheless,therelativelylowdensityofparkspercapitainsomeareasofPeelisanimportantfindingsincepeoplelivinginmoredenselypopulatedneighbourhoodswithlittleornopersonalgreenspacesuchasbackyardsorgardens(particularlyresidentsofapartmentbuildings)maydependmoreonnearbyparksforexerciseandoutdooractivity.

Parksettingscanincludeavarietyoffeaturessuchaspavedtrails,bicyclepaths,opengreenspaceandplaystructures.InOntario,parksizeandthenumberofparkfeatureswereamongthestron-gestpredictorsofadultsusingaparkforphysicalactivity.23,31Sincesmallerparkstendtolackavarietyoffacilities(e.g.,trails,woodedareas),residentsofcentralBramptonandMississaugawholivefarfromlargerparkareasmaylackaccesstopublicoutdoorsettingsthatmoststronglysupportavarietyofphysicalactivities(e.g.,walking,runningorbicyclingalongparktrails).Unfortunately,nodataonparkfeaturesandamenitiesinPeelwereavailableforanalysis.

Public and private recreation facilities Publicrecreationfacilitiesplayanimportantanddistinctroleinsupportingphysicalactivityandprovideimportantsettingsforresidentstoparticipateinorganizedsports.30Privatefacilities(i.e.,thosenotoperatedbylocalmunicipalities)maynotbefinanciallyaccessibletoallmembersofthegeneralpublic;nonetheless,theyserveasimportantandpopularsettingsforindividualsandfamiliestotakepartinavarietyofphysi-calactivities.Bothprivateandpublicindoorfacilitiesareparticularlyimportantlocationsforpeopletoexerciseandplaysportscomfortablyduringthewintermonths.30

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Intheseanalyses,avarietyofpublicrecreationfacilities,includingcommunityorsportscentres,swimmingpoolsandarenas,wereexamined.ThesefacilitieswerewidelydistributedacrossPeel’sresidentialareaswithsomeclusteringoffacilitiesinseveralpocketsofcentralBramptonandinpartsofMississauga.Thisclusteringoffacilitieswasreflectedinthehighlyvarieddensityoffacilitiesper10,000population–whilemostcensustractsinPeelcontainednorecre-ationfacilities,afewcensustractsincentralandnorthwestCaledon,westandcentralBrampton,andsoutheastMississaugahadupto10differentfacilitiesper10,000residents.However,mostareaslackingpublicrecreationfacilitieshadrela-tivelygoodaccesstoparksandschools,whichforsomeresidentsmayatleastpartiallycompensateforthelackofnearbyindoorrecreationalspaces.

Thelocationsofprivaterecreationalfacilities,in-cludinggyms,healthclubs,martialartsandyogastudios,hockeyandsoccerclubs,golfcoursesandhorsebackridingfacilities,acrossPeelwerealsoexamined(foramorecomprehensivelistoffacilities,pleaseseeAppendix6.A).Manyprivatefacilitieswerelocatednearpublicrecreationfacilities(e.g.,intheBoltonarea,withindown-townBramptonandinsouthMississauga)andalongmajorroads.Anumberofprivatefacilities

wereconcentratedwithinornearnon-residentialareas(e.g.,industrialorcommercialareas).

geographic access to Parks, schools and Public recreation Facilities Publicaccesstothenearestparkorschool(measuredusingmodelledtraveldistancealongtheroadnetwork)wasgenerallyverygoodthroughoutPeel’sresidentialareas.Inmostresidentialareas,thenearestschoolorparkwaslessthan500metresaway.Thisrepresentsarangeofdistancesthatmostpeoplecanwalkinlessthansevenminutes.Thereareasmallnumberofareaswithsomewhatworseaccesstothenearestparkorschool(within1,000morfurther),particularlyalongHighway403andtheQEWinMississauga,andinoutlyingareasofBrampton.DespitethegenerallyshortdistancestoschoolsandparksacrossPeel,therewasnoinformationaboutwhichmodeoftransportationresidentscommonlyusetoaccessthesere-sources(e.g.,walkingordriving).Becauseofthelargelysuburban,car-orientedlayoutofmanyPeelneighbourhoods(e.g.,lackofsidewalksonbothsidesofthestreet;wideroadswithhighspeedlimitswhichcreateconcernsabouttrafficsafetyforpedestrians),itispossiblethatmanyresidentsrelyoncarsorschoolbusestoaccessnearbyamenities.

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Accesstopublicrecreationfacilitiesfollowedadifferentpatternfromaccesstoparksandschools.BecauseofthemuchsmallernumberofsuchfacilitiesinPeelcomparedwithparksorschools,aswellastheirclusteringincertainlocations,onlyafractionofresidentialareashadrelativelygoodaccesstopublicrecreationfacili-ties(within1,000morless,whichcorrespondstoabouta14-minutewalkorless).ThismeansthatthegreatmajorityofPeelresidentslivedtwokilometresorfurtherfromthenearestpublicrecreationfacility(whichrepresentsabouta30-minutewalkeachway).Thisisaconcerningfindingbecauseitrepresentsalackofpublicrecreationfacilitiesnearwheremostpeoplelive.Longdistancestorecreationfacilitiesmaydiscourageresidentsfromaccessingsuchfacilitiesbyactivetransportorfromaccessingthematall.

diabetes rates and geographic access to Parks, schools and Public recreation Facilities ManyareasofBramptonandnortheastandcentralMississaugahadhighratesofdiabetesamongtheirresidents(seeChapter2).Manyoftheseneighbourhoodshadahighproportionoflowereducation,lowerincomeandvisibleminorityresidents(seeChapters3and4).

Proximitytoparksandschoolsdidnotappeartohaveastrongassociationwithpatternsofdiabe-tesprevalence.Whileasmallnumberofcensustracts(innortheastBramptonandadjacenttotheairportinMississauga)hadworseaccesstoparksandschools(atleast1,000maway),themajorityofareaswithhighratesofdiabetesamongtheirresidentswerelocatedlessthan500mawayfromthenearestparkorschool.AnumberofareasinsouthMississaugawithlowerratesofdiabetesamongtheirresidentsalsohadverygoodaccesstoparksandschools.

Similartoparksandschools,therewasnoob-servedspatialconcordancebetweengeographicaccesstopublicrecreationfacilitiesandratesofdiabetes.ThismaybedueatleastinparttoalowlevelofvariationinaccesstothesefacilitiesacrossPeel(i.e.,mostareaswerelocatedrelativelyfarfromapublicrecreationfacility).Withthe

exceptionoffourcensustractsinBramptonandnortheastMississauga,themajorityofhigh-diabetesareaswerelocatedrelativelyfarfromthenearestpublicrecreationfacility.InBrampton,mostareaswithhighratesofdiabetesamongtheirresidentswerelocatedatleast1,000mawayfromapublicrecreationfacility(atleasta14-minutewalkeachway),whilemanyotherswereatleast2,000maway(atleasta30-minutewalkeachway).InMississauga,roughlyhalfofallhigh-diabetesareashadmoderatelylongtraveldistances(1,000to2,000m)andhalfhadevenlongerdistancestotheseresources.Similarly,themajorityoflowerdiabetesareasinCaledonandsouthMississaugaalsohadrelativelylongtraveldistancestothenearestpublicrecreationfacility.However,theselowerdiabetesareasaregenerallycomprisedofhigherincomepopulationsthatmaybelessdependentonlocalandlowercostpublicrecreationfacilities.

TherearefewpublicrecreationfacilitieswithinwalkingdistanceofwheremostresidentsofPeellive.ThismeansthatmostPeelresidentsprobablyneedtodriveacartoaccessapublicrecreationfacility.Havingsuchfacilitieswithinwalkingdistance(alongwithothercommondestinationssuchasshopsandservices)mayencourageroutinephysicalactivityforutilitar-ianpurposes(e.g.,walkingtogettoandfromplaces).22,29Thisisanimportantpointbecauseutilitarianactivityisthemostimportantsourceofphysicalactivityinthegeneralpopulation.Additionally,livingincloseproximityofa

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recreationfacilitymaybeespeciallyimportantforprovidingacomfortablespacetobephysicallyactiveinaclimatelikeCanada’swithlong,coldwinters–particularlyforfamilieswithyoungchildrenandolderpeople.

Physical activityAbouthalfofPeelresidentsreportedbeingmoderately-to-highlyphysicallyactiveduringleisuretime(equivalenttowalking30to60minutesadayormore),andaboutaquarterreportedhighlevelsofactivity(equivalenttojog-ging20minutesorwalkinganhouraday).Theselevelswereverysimilartobothprovincialandnationalaverages.32Despitetheoverallsimilarity,therewasalotofvariationinlevelsofactivityacrossPeelHealthDataZones.TheproportionofresidentswhowereatleastmoderatelyorhighlyactivewashighestinwestandsouthMississauga,andinCaledon(exceptineastCaledon).ResidentsofBramptonandeastCaledon(nearBolton)generallyreportedthelowestlevelsofphysicalactivityintheregion.ResidentsofnortheastandcentralMississaugaalsoreportedlowerlevelsofphysicalactivity.Withtheexcep-tionofeastCaledon,thesewerethesameareasthatalsohadhighratesofdiabetesprevalenceamongtheirresidents(9.6%orhigher).

Althoughmanyhealthorganizationsrecommendaccumulatingatleast150minutesofmoder-ate-tovigorous-intensityphysicalactivityperweekforoptimalhealthbenefits,thereisgrowingevidencethatevenlowerlevelsofactivityprovideimportanthealthbenefits.Just15minutesofmoderate-intensityactivityaday(e.g.,briskwalking)significantlyreducedtheriskofprema-turedeathinmenandwomenofvariousages,aswellasinpeopleathighriskforcardiovasculardisease.33Thisisimportantforindividualswhoarecurrentlyinactive–increasingactivitylevelsbyasmallamountismuchmorefeasiblethanimmediatelyachievinghighlevelsofphysicalactivity.Thishasimportantimplicationsfordevelopingprogramsandmessagestoincreaselevelsofroutinephysicalactivityinthegeneralpopulation(e.g.,tofacilitatehigherlevelsofdailywalkingorbicyclingfortransportation).

SeparateratesofphysicalactivityformenandwomeninPeelwerenotavailable.However,men(particularlyyoungerandoldermen)aremorelikelytoparticipateinleisure-timephysicalactivitiesthanwomenofsimilarage.32Otherindividual-levelfactorsrelatedtobeinglessphysicallyactiveincludeolderage,lowersocioeconomicstatus,beinganimmigrantandnon-Whiteethnicity.32,34Anadditionallimitationoftheseanalysesisthemeasurementofonlyonetypeofphysicalactivity(i.e.,physicalactivityduringleisuretime),whichrepresentsaportionofaperson’stotaldailyactivity.Whilesomepeoplewhoareinactiveduringtheirleisuretimemaybesufficientlyactiveduringnon-leisurehours(e.g.,duringworkhours)toderivehealthbenefits,mostpeoplewhoareinactiveintheirleisuretimearealsolessactiveinotheraspectsoftheirlives.32Finally,therewerenodataonlevelsofsedentaryactivities(e.g.,sittingforlongperiods).Sedentaryactivitiesincreasetheriskofchronicdiseaseandprematuredeathindepen-dentofaperson’slevelsofphysicalactivity.4,14,15

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Incontrasttothestrongspatialcorrespondencebetweenratesofphysicalactivityanddiabetes,therewasnoclearspatialrelationshipbetweenaccesstoparks,schoolsorpublicrecreationfacilities,andratesofphysicalactivity.Thatis,ratesofphysicalactivitywerenotconsistentlylowerinareasthathadworseaccesstosuchphysicalactivityresources,norwereactivityratesconsistentlyhigherinareaswithbetteraccesstotheseresources.Thissuggeststhatotherfactorsbesidesspatialproximitytoplacestobephysi-callyactivemaybemoreimportantinshapingindividuals’patternsofactivity.ComparedwithWhites,allimmigrantandethnicminoritygroups(exceptAboriginals)inCanadareportedlowerlevelsofoverallphysicalactivityandwerelesslikelytoparticipateincertaintypesofactivi-ties,includingwalking,enduranceactivities(e.g.,jogging,swimming)andsports(e.g.,basketball,icehockey).34However,thesamegroupsweremorelikelytoparticipateinmoreconventionalformsofexercisesuchashome-basedexerciseandaerobicsclasses.

Ethnoculturalcharacteristicsmayalsoinfluencewhetherapersonisawarethatlocalrecreationfacilitiesexistandknowsofthevariouspro-grams/amenitiestheyoffer.PatientsofSouthAsianbackgroundwithcoronaryheartdiseaseweremuchlessawareofanyfacilitiesforphysicalactivitynearwheretheylivedcomparedwithWhitepatients;theywerealsomorelikelytohavediabetes.35Suchresultshighlightthefactthatgeographicaccesstorecreationspacesdoesnotnecessarilyequalaccessasindividualsperceiveit.Thisisaninherentlimitationofmostmeasuresofgeographicaccessthatreadersmustkeepinmindwheninterpretingtheresultsoftheseandsimilaranalyses.

conclusions and iMPlications Beingphysicallyactiveiscriticalforbothpre-ventingandmanagingdiabetes.Limitedaccesstoplacestobephysicallyactivecanposearealobstacletoachievingadequatelevelsofactiv-ityrequiredtoachievehealthbenefits.Inthis

chapter,theavailabilityofandaccesstovariousrecreationresourcesacrossPeel,aswellasratesofdiabetesandleisure-timephysicalactivityamongPeelresidents,wereexamined.

ParksandschoolsweregenerallywelldistributedacrossPeel’sresidentialareas.Mostresidentslivedwithinlessthana10-minutewalkofthenearestparkorschool.Incontrast,accesstolargerparkspaces(whichmaysupportphysicalactivitymorestronglythansmallerparks)andpublicrecreationfacilitieswaslesseven,withthemajorityofresidentsnotlivingwithinwalkingdistanceofsucharesource(whichmayhinderuse).LandusepatternsinPeelthatseparateresidentialareasfromallothertypesoflandusesmayberesponsibleforsomeofthesetrends.Inareaswhereaccesstorecreationresourcesispoor,communityprogramsandotherinitiativestoencouragepeopletobemoreactivemaybeineffectiveandinsufficientifresidentscannoteasilyaccessappropriatespacesandfacilities.

Theanalysesintheatlasshownoclearcor-respondencebetweenaccesstopublicrecreationspacesandratesofdiabetesorphysicalactivity.Thismaybedue,atleastinpart,toalowlevelofvariationinaccesstothesefacilitiesacrossPeel(i.e.,mostareaswerelocatedrelativelyfarfromapublicrecreationfacility).Thesefindingsalsohighlightthefactthattheexistenceofrecreationresourcesinaneighbourhooddoesnotensurethatresidentswillactuallyusetheseresources.30Itiscertainlynotonlythespatialproximitytoaresource,butalsotheaesthetics,designandsafetyofrecreationspaces,andculturalandsocialfactors,thatinfluencewhetherpeoplewillusearesource.34-36Thus,inareaswherethereisgoodaccesstoparksandrecreationfacilities,healthpromotersshouldfocusonincreasingresidents’awarenessthattheseresourcesexistandonovercominganysocial,environmentalandculturalbarrierstotheiruse.AcrossPeel,population-wideeffortstoincreaseresidents’awarenessoftheimportanceofachievingoptimallevelsofphysicalactivityforhealthwillalsocontinuetobeveryimportant.

Overalllevelsofleisure-timephysicalactivityself-reportedbyPeelresidentswereverysimilar

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totheprovincialandnationalaverages.However,activitylevelsvariedconsiderablyacrosstheregion:residentsofeastCaledon,BramptonandportionsofcentralandnortheastMississaugareportedthelowestlevelsofactivity.Thisisofgreatconcernbecausethemajorityoftheseareasarealsohometoalargeproportionofresidentsbelongingtoethnicgroupsthathaveageneticpredispositiontodevelopingtype2diabetesatayoungerageandlowerbodyweight(seeChapter4foramoredetaileddiscussionofethnicityinrelationtodiabetes).

Healthpromotioninitiativesmustconsiderethnoculturalfactorswhendesigninginterven-tionstoincreaselevelsofphysicalactivityamongPeelresidents,particularlyforthoseathighriskofbeingphysicallyinactiveandofdevelopingchronicdisease.Forexample,programsdesignedtotargetspecificethnoculturalorimmigrantsubgroupsinPeelmayincludeconsultationwithlocalresidentstofindoutwhichtypesofphysicalactivitythesegroupsprefer.34

aPPEndix 6.a – rEsEarcH MEtHodologyData sources

Parks, schools and recreation facilities • Dataonparklocationsandparkareasin2009

wereobtainedfromtheRegionofPeel.Thefollowingcategoriesofparkswereincluded:schoolparks(includingprivateschools),conservationareas,forestmanagementareas,cityparksandparkettes,andprovincialparks.Inthesedata,someparkswererepre-sentedasmultipleadjacentpolygons.Theseadjacentpolygonswereaggregatedandparkboundariesweregeneralizedtoreducethecomputationalpowerrequiredforanalysis.Intotal,1,134parksranginginsizefrom89squaremetresto4.6squarekilometreswereincludedintheseanalyses.

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• TheRegionofPeelsupplieddataonallpublicandother(e.g.,Catholic)schoolsfor2009,whichtotaled425.Fourschoolsinthesedataweremarkedasclosedandwerethusremoved,leaving421schoolsthatwereincludedintheanalyses.

• TheRegionofPeelprovideddataonpublicrecreationfacilitiesintheregionin2010.Thesefacilitiesincludedcommunitycentres,recre-ationcentres,indoorandoutdoorswimmingpools,arenas,artificialicerinks,gymnasiumsandsportscentres,soccerfieldsandtenniscourts.Therewassomeoverlapbetweenspacesofrecreationandparks,sincemanysoccerfieldsarelocatedwithincityparks.

• Thelocationsof416privaterecreationfacilities(i.e.,facilitiesnotoperatedbylocalmunicipali-ties)in2010wereobtainedfromaproprietarycommercialdatabase(Dunn&Bradstreet,Inc).Thesefacilitiesincludedprivateathleticsclubsandgyms,healthclubs,martialartsandyogastudios,golforcountryclubs,curlingclubs,racquetballandsquashclubs,tennisclubs,ice-skatingandin-lineskatingrinks,swimmingclubs,gymnasticsclubs,soccerandhockeyclubs,horsebackridingfacilitiesandsailingclubs.Althoughthesefacilitiesarenotuniversallyaccessible,theirlocationswereincludedintheanalysesbecausetheymayservetofillingapsinpublicfacilities’services,especiallyinhigherincomeneighbourhoods.

• Fordensityofresourcesper10,000populationbycensustract,the2006CanadianCensuswasusedtoderivethetotalpopulationwithineachcensustract.

diabetes Prevalence • Age-andsex-standardizeddiabetesprevalence

ratesper100peoplewerecalculatedusingtheOntarioDiabetesDatabase(ODD)andotheradministrativedatasourcesheldattheInstituteforClinicalEvaluativeSciences(ICES)(seeAppendix2.Aforamoredetaileddescription).

• Inordertoremoveanyinfluenceduetodifferencesinthepopulation’sageandsex

distributionacrosscensustractsorPeelHealthDataZones(PHDZs),theratesofdiabetesprevalencewerestandardizedtothe1991CanadianCensuspopulation.

Physical activity • Dataonself-reportedphysicalactivityduring

leisuretimeamongPeelresidentsage12oroldercamefromStatisticsCanada’sCanadianCommunityHealthSurveys(CCHS).DuetothesizeandsamplingoftheCCHS,levelsofphysicalactivitycouldnotbereportedbycensustract;instead,thelargerPHDZswereused.Inordertoreachanadequatesamplesize,CCHScycles2003(Cycle2.1),2005(Cycle3.1)and2007/2008werecombinedusingstatisticalmethodsthattakeintoaccountthesurveydesignandweightingtechniques.

• Todeterminelevelsofphysicalactivity,thederivedvariable“LeisureTimePhysicalActivityIndex”intheCCHSwasused.Thisindexcategorizesrespondentsasbeing“active”,“moderatelyactive”or“inactive”basedonthetotalamountofenergy–inkilocaloriesperki-logramofbodyweight–thateachrespondentexpendsonanaverageday.Thistotalenergyexpenditurewasestimatedfromallactivitieslastingmorethan15minutesthatrespondentsreportedengaginginduringtheirleisuretimeoverthepreviousthreemonths.TodeterminepatternsofphysicalactivityamongPeelresi-dents,theproportionofallrespondentswhowereclassifiedaseitheratleastmoderatelyactiveoractivewascalculated.Individualsclassifiedasmoderatelyactiveusedbetween1.5and3kilocaloriesperkilogramofbodyweightperday(e.g.,walking30to60minutesadayorengaginginthree,hour-longexerciseclassesperweek).32Individualsclassifiedasactiveused3ormorekilocaloriesperkilogramofbodyweightperday(e.g.,walkinganhouradayorjogging20minutesaday).32

• Inordertoremoveanyinfluenceduetodifferencesinthepopulation’sageandsexdistributionacrosscensustractsorPHDZs,thephysicalactivityrateswerestandardizedtothe1991CanadianCensuspopulation.

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• StatisticsCanada’sspecificguidelinesforreportingestimatesbasedonCCHSdatawasfollowed(seeAppendix2.Aformoredetailsaboutthesereportingguidelines).SeparateratesofphysicalactivityinmenandwomenwerenotreportablebecauseofthelargecoefficientofvariationinmanyPHDZsforthesex-specificrates.

analysisTheavailabilityandaccessibilityofparks,schoolsandpublicrecreationfacilitiesacrossPeelregionwasexamined.Availabilitywasdepictedintwowaysonmapsincludedinthischapter:

• Thefirstmethodusedsymbolstoshowthelocationsofresources(e.g.,recreationfacilitiesacrosstheregion).Thismethodprovidedanopportunitytodeterminewhereserviceswerelocatedandwhethercertainresourcesexistedinspecificneighbourhoods.

• Thesecondmethodusedchoropleth(shaded)mapstoshowthedensityofresourcesineacharea,takingpopulationintoaccount(i.e.,thenumberofrecreationfacilitiesper10,000residents).Thismethodidentifiedwhereresoureswerelocatedinrelationtowherepeoplelivedandwhichneighbourhoodshadmoreresourcespercapitathanothers.

Access/accessibility,asshownontheaccessibilitymaps,wasmeasuredastheshortestdistance(alongthestreetnetwork)fromeachpointacrossPeelregionina150-metregridofstartingpointstothenearestresourcelocation(e.g.,thedistancealongthenetworkofstreetsandhighwayslead-ingtoarecreationcentre).

Thespatialrelationshipbetweentheaccessibil-itymeasuresandratesofdiabetesprevalencethatwereeithermuchhigher(20%ormore)ormuchlower(20%orless)thantheGTAaveragediabetesrate(9%)werealsoevaluated.ForeachPeelcensustract,thediabetesratewasdividedbytheoverallGTArateinordertocalculatearate-ratio.CensustractswithdiabetesratesthatweremeaningfullyhigherthanintheGTAasawhole(rate-ratioof≥1.2)weredepictedinshadesofred,whiletractswithratesmuchlowerthan

intheGTA(rate-ratioof≤0.80)weredepictedinshadesofblue.AllcensustractswhoseratesdidnotdiffersubstantiallyfromtheGTArate(rate-ratiobetween0.81and1.19)weredepictedusingasinglegreycolour.

Finally,theaveragerateofleisure-timephysi-calactivityineachPHDZwasdepictedusingshaded(choropleth)maps.Associatedratesofage-andsex-standardizeddiabetesprevalenceineachPHDZwereoverlaidonthismapus-ingproportionalsymbols(circles).Thethreecategoriesofdiabetesprevalencewerederivedfrompopulation-weightedtertilesofPHDZs(i.e.,allPHDZswereorderedfromlowesttohighestdiabetesprevalenceandthendividedintothreegroupswithequalpopulations).Thismethodwasusedtocreateareasonabledistributionofratesacrossthesmallnumberoftheserelativelylargespatialunits.

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