CSSD Hydration Strategies 5

Question 1

A young female gymnast weighing 48 kg trains 4 hours daily indoors. Her sweat rate is 0.8 L/hr. Which hydration recommendation is most appropriate?

Accepted Answer

Pre-exercise hydration check, ~600–800 mL/hr during exercise, 150% post-exercise deficit replacement

Answer

A structured approach including pre-exercise status check, individualized in-exercise intake, and post-exercise recovery hydration is best practice regardless of body size or sweat rate.

Question 2

Which finding on a pre-participation hydration assessment would prompt a CSSD to recommend immediate medical evaluation?

Accepted Answer

Urine specific gravity of 1.031 combined with dizziness and orthostatic hypotension

Answer

Severe dehydration (USG >1.030) combined with dizziness and orthostatic hypotension indicates clinically significant hypovolemia requiring physician evaluation.

Question 3

Caffeine's effect on hydration during exercise at moderate doses (3–6 mg/kg) is best described as:

Accepted Answer

Minimally diuretic at exercise doses; does not meaningfully impair hydration

Answer

Moderate caffeine doses used for ergogenic effect produce negligible diuresis during exercise, and current evidence does not support the need for extra fluid to compensate.

Question 4

Which sport most commonly requires individualized sweat sodium testing due to exceptionally high sodium losses in some athletes?

Accepted Answer

American football with padded equipment in summer two-a-days

Answer

Football players in full pads during summer two-a-days face extreme heat stress and prolonged sweat exposure, with some athletes losing >2 g sodium/L of sweat ('salty sweaters').

Question 5

A CSSD notes that a triathlete's sweat sodium concentration is 70 mmol/L. During a 5-hour Ironman, they sweat 1.5 L/hr. Approximately how much sodium do they lose per hour?

Accepted Answer

1,610 mg/hr

Answer

70 mmol/L × 23 mg/mmol × 1.5 L/hr ≈ 2,415 mg/hr; however 70 mmol × 1.5 L = 105 mmol × 23 = 2,415 mg, so the closest accurate answer is 2,415 mg/hr.

(CSSD) Board Certified Specialist in Sports Dietetics Practice Test

(CSSD) Board Certified Specialist in Sports Dietetics Practice Test

CSSD Hydration Strategies 5