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Gender-based health and weight loss beliefs in knee osteoarthritis patients
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Osteoarthritis: A chronic joint condition
Affects 12.5% of the Australian population > 45 yrs
Cost approximately $1.2 billion in 2001
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Knee OA, Obesity & Women Effects women > men Obesity main modifiable risk factor Weight loss →improved symptoms BMI → ↑symptom severity, particularly in
women Despite this, those with OA still gain weight !
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Study aims Thus this study aims to investigate
gender-based health and weight loss beliefs of those with knee osteoarthritis in order to develop a more effective weight loss intervention strategy for female sufferers
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MethodsParticipants: 100 patients attending a rheumatology or orthopedic
clinic with symptomatic knee OA Aged 50 – 70 yearsData collection: Two part questionnaire:
1. Health and weight loss beliefs2. Knee symptoms (pain, stiffness and function)
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Data Analysis
Data examined separately for men and women
Analysed using SPSS Statistically significance: p<0.05
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Characteristics of Study Population
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Body Weight Satisfaction*
Not satisfied Quite Satisfied Satisfied0
10
20
30
40
50
60
70
Men Women
Leve
l of
body
wei
ght
satis
fact
ion
(%)
* Not significantly different
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Body Shape Satisfaction*
Not Satisfied Quite satisfied Satisfied 0
10
20
30
40
50
60
70
80
Men Women
Leve
l of
body
sha
pe s
atis
fact
ion
(%)
*P=0.008 for trend
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Weight Change in the Last 6 Months*
Gained weight Lost weight Stayed at the same weight
Don’t know0
10
20
30
40
50
60
70
MenWomen%
*P=0.008 for trend
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Desired Weight*
Happy as I am 1 – 5 kg more Over 5kg more 1-5 kg less 6-10kg less Over 10 kg less
0
5
10
15
20
25
30
35
40
Men Women%
* Not significantly different
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Dieting Frequency*
Never More than 10 times
1-4 times I am always on a diet to lose weight
5-10 times0
10
20
30
40
50
60
70
Men Women %
*P=0.013 for trend
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Factors Causing Weight Gain
Geneti
cs & m
etabo
lism
Amou
nt of
physic
al act
ivity/e
xerci
se
Alcoh
ol int
ake
Total a
mount o
f food
eaten
Smoki
ng
Fat in
take
Sugar
intake
I don’t
tend
to put
weight
onOthe
rNon
e
Don’t k
now0
10
20
30
40
50
60
MenWomen%
*
**
*P=0.013; **P=0.031
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Reasons to Exercise
To rel
ease
tensio
n/rela
x
To be
out o
f doo
rs
To main
tain g
ood h
ealth
To soc
ialise
with ot
her pe
ople
To los
e or co
ntrol
weight
To ha
ve fu
n, adve
nture
or ex
citemen
t
To fee
l or ge
t fit
To ga
in a s
ense o
f achi
evement
To en
joy th
e com
petiti
on
To work
harde
r/ conc
entra
te bet
ter
I don’t
partic
ipate
in an
y
None o
f the a
bove
0
10
20
30
40
50
60
MenWomen %
*
*P=0.0004
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Level of agreement with the statement:
A campaign in my locality aimed at
increasing participation in physical
activity/exercise would be effective in
encouraging me to do more.
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Level of Agreement*
Disagree Neutral Agree0
10
20
30
40
50
60
70
MenWomen%
*P=0.009 across trend
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Limitations
Cross-sectional designed study Use of questionnaire English participants only
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ConclusionsWomen: Diet more yet frequently gain weight Believe in exercise to control weight Would be receptive to targeted
intervention
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Therefore…
A targeted intervention campaign focused on dietary education and exercise participation may be effective in preventing weight gain and promoting weight loss among women with knee OA