Flashcards in Environmental Concerns: Exam 2 Deck (81)
What are the 4 areas of concern for environmental stress?
-condition where body temp is elevated
-caused a number of deaths over the years
What must an ATC be able to do concerning heat?
-understand heat/ humidity factors to manage and plan accordingly with coaching staff
-be able to recognize clinical signs/ symptoms of heat illness
Is heat stress preventable?
How can heat stress be avoided?
Use extreme caution when training in heat
What can increase risk of heat stress?
Underlying medical condition such as sickle cell trait
What other than hot weather can cause heat stress?
Dehydration and equipment
What 5 factors affect body temp?
-metabolic heat production
-conductive heat exchange
-convective heat exchange
-evaporative heat loss
-radiant heat exchange
Metabolic heat production
"Running" temp of the body
Conductive heat exchange
Physical contact with objects
Convective heat exchange
Circulation of medium (air/ water)
Evaporative heat loss
Sweat must evaporate to dissipate heat
Radiant heat exchange
Sun v shade
Evaporative heat loss key (3)
-evaporation of water takes heat with it
-when radiant heat> body temp, evaporation is key
-air must be relatively water free for evaporation to occur (65% impairs, 75% stops)
When should hydration begin?
24 hours prior
How can you monitor hydration?
2% of body weight lost in fluid. This can cause problems
Is small amounts or large amounts of fluid better?
Small amounts at regular intervals prior to activity rather than large amount immediately before
Dehydration and concussions
Dehydration symptoms can mimic concussion symptoms so athlete should be removed from heat and monitored if in doubt
How can you monitor fluid loss?
How much fluid does the body require?
2.5 L when engaged in minimal activity
How much water does an adult lose per hour?
What will trigger a thirst response?
2% drop in body weight
What is essential to replace fluid and electrolytes?
Unlimited access to fluids
Why are sports drinks more effective than water?
-flavoring increases desire to consume
-replaces fluids and electrolytes
-small amounts of sodium help in water retention
What is the optimal CHO level?
14g per 8 ounces of water
What is the most effective method of avoiding heat stress?
Graded intensity changes are recommended with progressive exposure over a 7-10 day period
How long does it take to get 80% acclimated?