Chapter 11: Hydration Flashcards
What is the primary cause of exertional rhabdomyolysis?
An intense exercise session
Which individual would be most likely to be at risk for exercise associated hyponatremia?
A runner completing a 4.5 hour marathon in cool weather.
Exercise associated hyponatremia is primarily caused by which of the following?
Excessive fluid intake
At what rate should individuals engaged in exercise in hot environments consume fluids?
There is no single fluid intake rate for all individuals.
Which item most accurately describes the role of fluid intake in regards to assisting body-temperature regulation during exercise in the heat?
Fluid intake can blunt increases in temperature during severe dehydration, but it cannot prevent all cases of heat illness.
What role does pickle juice play in regards to client hydration status?
Pickle juice contains a high concentration of sodium which can increase thirst drive and aid in consumed fluid retention.
What signaling mechanism triggers thirst due to a significant loss in total body water from sweating?
Baroreceptor
A client’s pre-exercise weight is 80.0 kg. Their post-exercise weight is 78.0 kg. They consumed 1.0 liters of fluid during training. What was the volume of their sweat loss?
3.0 liters
Which item most appropriately describes the use of urine-specific gravity?
It should be assessed multiple times before exercise to determine if clients with heavy sweat losses routinely fail to consume adequate fluid during recovery.
Which of the following has research shown is true regarding most individuals engaged in training that produces significant sweat losses?
They significantly underestimate their sweat losses.
A client who trains for triathlons has asked how much fluid he should consume between his morning runs and afternoon bike rides. He has determined his sweat losses from his early morning runs average around 2 liters. Which range of fluid intake would be most appropriate?
2.5-3.0 liters
A client weighs 50 kg and is training to complete a cool weather half-marathon in a time of about 2 h. The client’s sweat losses are expected to equal 2 liters (about 4% of body mass). Which fluid intake goal would be most appropriate?
Begin the race euhydrated and simply drink to thirst.
Where is approximately 2/3 of body water found?
Intracellular fluid
A client weighs 70 kg and is training to complete a marathon in a time of about 4 h. The client’s sweat losses are expected to equal around 4 liters (about 6% of body mass). Which fluid intake goal would be most appropriate?
Drink 2 liters of fluid during the race.
What is the minimum percentage of beverage fluid replacement range that should be suggested for clients who lose more than 3% of their body mass during training and train more than once over a 24-hour period?
110-120%
