Which is NOT part of caffeine's role in improving athletic performance?

Which is NOT part of caffeine's role in improving athletic performance?

• A. Increased power production
• B. Decreased glycogen depletion
• C. Increased fat oxidation
• D. Decreased urine production

Answer: (D)

Caffeine helps performance by increasing power output in some activities, promoting greater fat oxidation during endurance efforts (which can spare glycogen), and lowering perceived exertion during exercise. It does not decrease urine production; in fact, caffeine acts as a mild diuretic and tends to increase urine output, especially in those not regularly consuming caffeine. That diuretic effect is not a mechanism by which caffeine enhances performance, so the statement about decreased urine production isn’t aligned with caffeine’s ergogenic actions.

Caffeine helps performance by increasing power output in some activities, promoting greater fat oxidation during endurance efforts (which can spare glycogen), and lowering perceived exertion during exercise. It does not decrease urine production; in fact, caffeine acts as a mild diuretic and tends to increase urine output, especially in those not regularly consuming caffeine. That diuretic effect is not a mechanism by which caffeine enhances performance, so the statement about decreased urine production isn’t aligned with caffeine’s ergogenic actions.