KHP 240 EXAM 3 QUESTIONS AND VERIFIED ANSWERS,
100% GUARANTEE
How do fluids cycle through the body - muscles produce heat, heat dissipated through
sweating, evaporation of sweat leads to cooling of the skin, cooling of blood, and cooling of
inner body
when a sweat drips off of skin, - it does not cool the athlete down (inefficient)
_____ tend to be more efficient sweaters than men - women
thirst - a conscious awareness of the desire for water and other fluids, which works to
control water intake
When you become dehydrated, - blood becomes more concentrated (i.e. salt) and signals
thirst mechanism
thirst can be blunted by - exercise and overriden by the mind
1% of water lost - heart beats an additional 3-5 bpm
2% of water lost - DEHYDRATION, mental edge lost, physical abilities decreased (in hot
weather)
3% of water lost - aerobic performance can be significantly impaired, doesnt seem to have
effect on muscle strength or anaerobic bursts
7% of water lost - intravenous fluid by doctor may be necessary
9-12% of water lost - death
,young children are at risk of dehydration because of - poorly developed thirst mechanism
senior citizens are at risk of dehydration because - less sensitive to thirst sensations than
younger adults
athletes practicing in heat are at risk for dehydration because - especially when lots of
clothing is necessary
Fluids are used for - - saliva and gastric secretions
- regulates body temp via sweating
- water in blood helps transports glucose, oxygen, and fats to muscles and carries away CO2 and
lactic acid
- in urine, it helps to eliminate waste
- lubricates joints and cushions organs and tissues
fluids needs vary - dramatically from person to person
sweat rates - commonly 1-4 lb/hour, but vary based on: sport, body size, intensite of
exercise, clothing, weather conditions, degree of heat acclimatization, training status
check color and quantity of urine to tell if dehydrated - - dark and scanty = dehydrated
- pale and plentiful = hydrated
- note: vitamin intake can alter this (especially B vitamins)
When dehydrated you may feel... - - chronic fatigue, headaches, and lethargy which are
signs of chronic dehydration
- muscle cramps could be related to dehydration or electrolyte deficits
, Electrolytes - electrically charged particles (or minerals) that help keep water in the right
balance inside and outside of the cells
Electrolytes of concern and their losses in sweat (based on an average of 2 lb lost through sweat)
- - sodium: 800 mg
- potassium: 200 mg
- Calcium: 20 mg
- Magnesium: 10 mg
Dehydration stresses the body by... - increasing body temperature, increasing heart rate,
increasing burning of glycogen, brain has a harder time concentrating, and exercise feels harder
daily rehydration is necessary because - failure to do so can lead to chronic dehydration
Goal for fluids before exercise - to start exercise session with your body in water balance
as opposed to a deficit from the previous exercise session
Fluid needs before exercise - approximately 2-3 mL/lb body weight at least 4 hours before
exercise
- no need to hyperhydrate
- body can only absorb so much fluid
- overhydration can lead to diluted blood sodium
- sodium intake can help stimulate thirst and can help retain some water
Goal for fluids during exercise - prevent excessive dehydration
dehydration - a loss of more than 2% of body weight due to water deficit
100% GUARANTEE
How do fluids cycle through the body - muscles produce heat, heat dissipated through
sweating, evaporation of sweat leads to cooling of the skin, cooling of blood, and cooling of
inner body
when a sweat drips off of skin, - it does not cool the athlete down (inefficient)
_____ tend to be more efficient sweaters than men - women
thirst - a conscious awareness of the desire for water and other fluids, which works to
control water intake
When you become dehydrated, - blood becomes more concentrated (i.e. salt) and signals
thirst mechanism
thirst can be blunted by - exercise and overriden by the mind
1% of water lost - heart beats an additional 3-5 bpm
2% of water lost - DEHYDRATION, mental edge lost, physical abilities decreased (in hot
weather)
3% of water lost - aerobic performance can be significantly impaired, doesnt seem to have
effect on muscle strength or anaerobic bursts
7% of water lost - intravenous fluid by doctor may be necessary
9-12% of water lost - death
,young children are at risk of dehydration because of - poorly developed thirst mechanism
senior citizens are at risk of dehydration because - less sensitive to thirst sensations than
younger adults
athletes practicing in heat are at risk for dehydration because - especially when lots of
clothing is necessary
Fluids are used for - - saliva and gastric secretions
- regulates body temp via sweating
- water in blood helps transports glucose, oxygen, and fats to muscles and carries away CO2 and
lactic acid
- in urine, it helps to eliminate waste
- lubricates joints and cushions organs and tissues
fluids needs vary - dramatically from person to person
sweat rates - commonly 1-4 lb/hour, but vary based on: sport, body size, intensite of
exercise, clothing, weather conditions, degree of heat acclimatization, training status
check color and quantity of urine to tell if dehydrated - - dark and scanty = dehydrated
- pale and plentiful = hydrated
- note: vitamin intake can alter this (especially B vitamins)
When dehydrated you may feel... - - chronic fatigue, headaches, and lethargy which are
signs of chronic dehydration
- muscle cramps could be related to dehydration or electrolyte deficits
, Electrolytes - electrically charged particles (or minerals) that help keep water in the right
balance inside and outside of the cells
Electrolytes of concern and their losses in sweat (based on an average of 2 lb lost through sweat)
- - sodium: 800 mg
- potassium: 200 mg
- Calcium: 20 mg
- Magnesium: 10 mg
Dehydration stresses the body by... - increasing body temperature, increasing heart rate,
increasing burning of glycogen, brain has a harder time concentrating, and exercise feels harder
daily rehydration is necessary because - failure to do so can lead to chronic dehydration
Goal for fluids before exercise - to start exercise session with your body in water balance
as opposed to a deficit from the previous exercise session
Fluid needs before exercise - approximately 2-3 mL/lb body weight at least 4 hours before
exercise
- no need to hyperhydrate
- body can only absorb so much fluid
- overhydration can lead to diluted blood sodium
- sodium intake can help stimulate thirst and can help retain some water
Goal for fluids during exercise - prevent excessive dehydration
dehydration - a loss of more than 2% of body weight due to water deficit
