Compared to many land-based power athletes (like sprinters), the ideal body composition of a competitive swimmer generally features:

Which of the following descriptions of drug side effects in athletes are correct? (i) hGH can lead to acromegaly and cardiomyopathy; (ii) Androstenedione use is associated with a higher risk of testicular cancer; (iii) Caffeine can cause dehydration and palpitations; (iv) Narcotics use for masking pain leads to addiction.

Evaluate these statements regarding cardiovascular training effects: (i) Aerobic training significantly increases resting stroke volume; (ii) Resting heart rate decreases due to increased stroke volume; (iii) Capillarisation increases the efficiency of nutrient and oxygen delivery; (iv) Cardiac hypertrophy involves thickening of the myocardium.