CSN Study Guide 2026
Everything you need to pass the CSN exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📚 CSN Topics to Study (21)
✍️ Sample CSN Questions & Answers
1. During prolonged endurance exercise lasting more than 60 minutes, what is the general fluid intake guideline to prevent significant dehydration?
The ACSM recommends consuming 400–800 mL per hour during prolonged exercise to replace sweat losses without risking overhydration or hyponatremia.
2. What is the main benefit of using electrolyte drinks during prolonged exercise?
Electrolyte drinks are highly beneficial during prolonged exercise to prevent dehydration and muscle cramps. Through sweat, the body loses significant amounts of fluids and essential electrolytes like sodium, potassium, and chloride. Replenishing these minerals helps maintain fluid balance, supports nerve function, and ensures proper muscle contractions, which are vital for sustained performance and preventing adverse effects.
3. What does the 'S' in SMART goals stand for?
In the SMART goal-setting framework, the 'S' stands for Specific. This principle emphasizes that a goal should be clearly defined, unambiguous, and focused, answering questions like 'What exactly do I want to achieve?' and 'Who is involved?'. A specific goal provides a clear target and direction, making it easier to plan and track progress.
4. At what level of body weight loss from sweat does aerobic exercise performance begin to measurably decline?
Research consistently shows that a body weight loss of approximately 2% from sweat leads to measurable decreases in aerobic performance, thermoregulation, and cognitive function.
5. What is the minimum recommended energy availability (EA) threshold to maintain normal physiological function in athletes?
An energy availability of ≥45 kcal/kg FFM/day is considered optimal, while below 30 kcal/kg FFM/day is associated with physiological impairment.
6. What is the standard of care for infection prevention in clinical practice?
The standard of care for infection prevention requires evidence-based practice aligned with current clinical guidelines and best practices.