Practice A.2—Hydration and nutrition with authentic IB Sports, exercise and health science (SEHS) exam questions for both SL and HL students. This question bank mirrors Paper 1A, 1B, 2 structure, covering key topics like core principles, advanced applications, and practical problem-solving. Get instant solutions, detailed explanations, and build exam confidence with questions in the style of IB examiners.
Which athlete is most likely limited in aerobic performance due to inadequate oxygen transport?
| Athlete | Iron (µg/dL) | VO₂max (mL/kg/min) |
|---|---|---|
| A | 72 | 61 |
| B | 33 | 45 |
| C | 55 | 57 |
| D | 67 | 60 |
Identify a source of indispensable amino acids.
Outline the roles of protein.
Describe indispensable amino acids.
What is the main effect of low sodium levels (hyponatremia) during endurance events?
Which is the most common electrolyte lost in sweat during exercise?
Why is the lactate inflection point important for endurance athletes?
Why is VO₂max considered a good predictor of endurance performance?
During rest, which macronutrient provides the majority of energy for body functions?
Which mechanism causes water to follow sodium during rehydration?
Why is potassium important for recovery after intense training?
Why is sodium essential in maintaining fluid balance during exercise?