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PE - physiological factors > Heat > Flashcards

Heat Flashcards

1
Q

what is the human body temperature

A

37°C

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2
Q

what is the human body temperatures daily rise and fall no more than

A

1°C

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3
Q

what is thermoregulation

A

process of maintaining your internal core temperature at 37°C

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4
Q

what do thermoreceptors do

A

detect changes in body temperature

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5
Q

what type of control is thermoreceptors

A

intrinsic

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6
Q

what is dehydration

A

loss of water due to sweat

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7
Q

what is hyperthermia

A

significantly raised body temperature (39°C)

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8
Q

what is cardiovascular drift + caused by

A

increased heart rate due to decreased stroke volume, caused by decreased blood plasma from being dehydrated when exercising in heat

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9
Q

side effects of exercising in hot environment & cause (CVS) (6)

A
  • causes dehydrated
  • decreased blood plasma
  • decreased blood volume
  • decreased stroke volume
  • increased heart rate to compensate
  • to maintain same cardiac output
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10
Q

side effects of exercising in hot environment & cause (respiratory system) (5)

A
  • increased breathing rate
  • caused by airways becoming constricted
  • due to being full of mucus
  • due to dehydration
  • caused by dry conditions
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11
Q

which two types of strength does hyperthermia affect

A
  • maximal
  • explosive
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12
Q

which energy system does hyperthermia affect

A

aerobic

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13
Q

which energy system does hyperthermia not affect

A

anaerobic

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14
Q

why are aerobic events affected by hyperthermia

A

cardiovascular drift

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15
Q

how might a football event limit the effects of hyperthermia (3)

A
  • water breaks
  • late night kick off
  • air conditioning
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16
Q

how may the effects of hyperthermia be limited pre-competition (2)

A
  • hydration (small amounts regularly)
  • cooling aids (ice bath, cooling vests, freeze fans)
17
Q

what do cooling aids do to the body (3)

A
  • reduce core body temperature
  • increase blood plasma levels
  • reduce dehydration
18
Q

how may the effects of hyperthermia be limited during competition (2)

A
  • hydration during event
  • wear correct clothing
19
Q

how may the effects of hyperthermia be limited post competition (3)

A
  • rehydrate (fluids)
  • refuel
  • cooling aids (ice bath, freeze fan, freeze vest)
20
Q

how to prevent heat related illnesses (3)

A
  • wear correct/cool clothing
  • cooling aids
  • drink water/hydrate
21
Q

heat exhaustion symptoms (7)

A
  • tiredness
  • weakness
  • dizziness
  • headache
  • fainting
  • muscle cramps
  • nausea or vomiting
22
Q

what can heat exhaustion lead to

A

heat stroke

23
Q

heat stroke symptoms (8)

A
  • extremely high temperature
  • red, hot, dry skin
  • rapid strong pulse
  • headache
  • dizziness
  • nausea
  • confusion
  • unconsciousness
24
Q

how serious is head stroke

A

potentially life threatening

PE - physiological factors (31 decks)

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