NCSF Sport Nutrition Specialist Certification Practice Test – Complete Exam Prep

Question: 1 / 400

At what percentage loss of body fluid does performance begin to be negatively affected?

1%

2%

The correct answer is the percentage at which significant physiological changes start to impact athletic performance. When the body experiences about a 2% loss of body fluids, it can lead to dehydration, which affects blood volume, cardiovascular function, and thermoregulation. At this level of fluid loss, athletes may experience a decline in endurance, increased perception of effort, and a decrease in cognitive function, which together can impair overall performance.

Maintaining proper hydration is crucial for athletes, as even mild dehydration can lead not only to physical fatigue but also to reduced concentration and decision-making ability. This is especially critical in sports requiring high levels of precision and focus. Understanding the threshold for negative impact highlights the importance of hydration strategies as part of athletic preparation and performance.

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3%

5%

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