exercising in heat

Question 1

describe acclimatization
how long?
what should you do to achieve it?

Answer 1

• occurs during first 7 days
• fully after 14 days
• 2-4 hours/day of heat exposure
• first few sessions include 15-20 min of low intensity

Question 2

what is happening physiologically during acclimatization

Answer 2

• increase fluid regulatory hormones (aldosterone/vasopressin)
• decrease rectal temp
• decrease HR
• increase sweat rate

Question 3

how is heat acclimatization affected by training status

Answer 3

• sweating begins at lower core temp
• produce increased volume of more dilute urine
• plasma volume increases
• increased skin and GI blood flow

Question 4

symptoms of heat exhaustion

Answer 4

• weak rapid pulse
• decrease CO
• dizzy/headache
• decrease BP

Question 5

symptoms of heat stroke

Answer 5

• absence of sweating/skin dry and hot
• core temp > 105
• hypothal shutdown

Question 6

treatment for heat cramps

Answer 6

• salt or electrolyte pill

- dilute electrolyte drinks

Question 7

reason for heat exhaustion

Answer 7

• H2O volume depletion
• reduced peripheral blood flow = decreased sweat output
• initiation of hypothlamic regulatory breakdown

Question 8

symptoms of heat exhaustion

Answer 8

• weak rapid pulse
• decrease CO
• dizzy/headache
• decrease BP

Question 9

symptoms of heat stroke

Answer 9

• absence of sweating/skin dry and hot
• core temp > 105
• hypothal shutdown