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Flashcards in Test Four Deck (185)
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1

how much heat production is increased during shivering

5%

2

WET relates to

temp as a result of humidity

3

acclimatization

adaptation over a long time period

4

heat loss must match

heat gain

5

what is the equation for body heat gain during exercise

heat produced- heat loss

6

what are the four principles of training

PROS, progression, overload, specificity and reversiblity

7

what are the differences in gender for heat tolerance

very small

8

Dry relates to

ambient temp

9

how much heat required to raise body temp

.83 kcal/kg

10

what are the adaptations during heat acclimation

increased plasma volume, earlier onset of sweating and higher sweat rate, reduced sodium chloride loss in sweat, reduced skin blood flow, increased cellular heat shock proteins

11

acclimation

rapid adaptation to environmental change and tends to be artificial

12

what are the two forms of involuntary heat production

shivering and action of hormones

13

during radiation, how much heat is loss at rest

60%

14

what specificity mean

specific muscles involved, specific energy systems utilized, the way muscles move

15

what is the most important means of heat loss during exercise with evaporation

heat loss at rest

16

which system is more genetically determined

anaerobic

17

can you reach steady state in hot environment

no

18

what is conduction

heat loss due to contact with another surface

19

increase in body temp is directly related to

exercise intensity

20

training can only improve anaerobic how much

to a certain degree based on fast 2x fibers

21

what are the guidelines for dehydration

hydrate before performance, consume 150 -300 ml fluid every 15 to 20 min, ensure adequate rehydration, monitor urine color

22

higher humidity makes it harder to

offload heat

23

normal core temp is

37 degrees celsius

24

VO2 max increases how much with trained atheletes

3 to 5% but it is still an important difference

25

what else in body helps increase heat

muscle mass

26

what is the bodys thermostat

hypothalamus

27

what is required for evaporation

vapor pressure gradient between skin and air

28

what does SAID stand for

specific adaptations to imposed demands

29

what is voluntary heat production

exercise

30

what is the action of hormones during heat production

thyroxine(metabolism stimulating), catecholamines, "nonshivering" hormones