jim clover, med, atc, pta coordinator sport author “sports medicine essentials” hi i’m dr....
TRANSCRIPT
Jim Clover, MED, ATC, PTACoordinator SPORT
Author “Sports Medicine Essentials”
Heat the Certified Athletic Trainer’s
Perspective
Hi I’m Dr. Feder
www.ropsports.com
www.sportclinic.md
Not to Kill anyoneTo provide a healthy Environment for the
AthletesTo get the best performance out of the
athlete
SecondaryReasonable costWith in the limitations of the staff (Coach’s,
Athletic Trainer, students , etc.)With the resources available
The Quest
Changes in blood flow
0
2
4
6
8
10
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14
cool hot
blo
od fl
ow
(L/m
in)
skincoremusclesorgans
Temperature Regulation
The hypothalamus is a small organelle within the brain which adjusts bodily functions through hormones which:-Increase heart rate-Begin the sweating mechanism-Increase blood flow to the skin surface
Personal Safeguards, cont’d% weight
lossfluid loss
time* effect & symptoms (* timing may vary based on intensity of work
and heat/humidity)
1% 0.75 L 1 hr unnoticed (at 1.5% weight loss you are considered dehydrated)
2% 1.5 L 2-3 hrs loss of endurance, start to feel thirsty, feel hot, uncomfortable
3% 2.25 L 3-4 hrs loss of strength, loss of energy, moderate discomfort
4% 3 L 4-5 hrs cramps, headaches, extreme discomfort
5-6% 3.5-4 L 5-6 hrs heat exhaustion, nausea, faint
7+% 5+ L 7+ hrs heat stroke, collapse, unconsciousness
This allow athletes to recognize water deficits which require consumption of fluid -2 to -3% of body weight, reduction of
training duration/intensity -4 to -6%, or consultation with an
experienced physician in excess of -7% out till cleared
Consistent daily monitoring of body weight
How Much Water to BringCalculate Sweat Loss
via Weight ChartsWeigh in before
practice and out after in the same dress “shorts”
ProblemsTwo a Day – Three
a day (needs to stop)
Both Male and Female (playing same sports)
What do they do in-between Practice
Not having a ATC on staff
Not knowing the sweat rate of each of your athletes
Turf vs Grass
All Athletes are not built the same
How much is enough?More than you want just to satisfy your
thirst
Sources of water are:1. Fluids - 1 cup or 8 oz = 240 mL every 20
min2. Foods - fruit & veggies are 90% water
Add up the number of athletes, number of cooler (size of cooler) and figure about how much should be taken out and consumed
Bring their own
What to drink & EatElectrolyte drinks (e.g. Gatorade) are
usually not needed for typical North American diet (can be used for first aid).
Stay away from caffeinated, carbonated, diet drinks, and alcohol as they take water out of your body.
Water is the best; juices and/or no caffeine sport drinks are also good (juices contain energy restoring glucose).
Eat 4 meals a day
Things to check
Look for typical heat strain symptoms; feeling over-heated, fatigue, headache, nausea, weakness, dark concentrated urine, etc.
Sweat that drips off your body no longer allows for cooling by evaporation; thus, unless there’s another medical reason for it, this is a sign that your body is heating up
Let the athlete change t-shirts.
Providing the H2O
How & What To Provide
Water Access
Different Ideas
Control methods
-Drinking adequate amounts of fluids
-Protective clothing (light colors reflect heat)
-Protective equipment (vests, fans)
-More?
TMS Temperatur Management System
What else are they doing?The commissioner
banned players with minor-league contracts from taking ephedra in the wake of Bechler‘s death
Administration Wants a numberTemperature
100 -106 degrees (Based on what?)
Heat Index (does it work everywhere?)
There is a number
www.hqinc.net
The Core Temp Ingestible Core Body Temperature Sensor was developed in the late 1980s by HQ Inc., of Palmetto, Florida
Costs around $30 each The pill relies on a temperature-sensitive quartz crystal temperatures ranging from 60 °C to 150 °C.
The History of THE PILL
Is This A Special Sports Pill?NO!
Sports physiologyFirefightingResearch &
medicineAgriculture
Occupational safety
Food Production & Safety
MilitaryIndustry
Upon swallowing, the vitamin-size pill acts as an internal thermometer, providing continuous readings of a player's body temperature, which can be picked up by a sensor placed against the low back.
Pills are ingested a couple of hours before the start of practice, allowing the capsules time to reach the small intestine, where core body temperature readings accurate to within 0.1 °C can be taken.
The capsule remains in the body for only 24 to 36 hours before it is eliminated.
The Process
The ScienceTemperature readings
are transmitted wirelessly to a handheld data recorder.
The receiver is held to the low back, and the handheld device's antenna retrieves the original temperature data.
98
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100
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0:00 0:00 0:15 0:23 0:31 0:39 0:45 0:53 1:00 1:10 1:21 1:32 1:42 1:58 2:19
Time Elapsed
Tem
pera
ture
PM
AM
Core Temp Over Timea.m. vs. p.m.
Heat MonitoringAllows for real-
time on-site monitoring
Provides absolute vs. relative data immediately
Temperature patch reflects internal (core) body temperature
SportsTemp Thermostrip
www.sportstemp.com$1.50 each
Heat acclimatization is specific to the stress imposed on the human body. For example, passive exposure to heat induces some responses, notably an improved ability to dissipate heat.
Complete heat acclimatization requires up to 14 days, but the systems of the body adapt to heat exposure at varying rates.
Acclimatization
The early adaptations (initial 1-5 days) involve an improved control of cardiovascular function, including expanded plasma volume, reduced heart rate, and autonomic nervous system which redirects cardiac output to skin capillary beds and active muscle
Excess dietary water and electrolytes do not speed the process of heat acclimatization.
Acclimatization
We do it for the kids