Which of the following is a physiological marker of anaerobic overtraining?

Which of the following is a physiological marker of anaerobic overtraining?

• A. Acute epinephrine and norepinephrine induced levels
• B. Increased appetite
• C. Decreased bone density
• D. Improved sprint performance

Answer: (A)

When athletes push into overtraining, especially with high-intensity, anaerobic work, the body’s stress response often stays activated. A clear physiological sign of this is an exaggerated release of catecholamines—epinephrine and norepinephrine—during or after exercise. These hormones drive rapid energy mobilization for bursts of effort, and their levels tend to rise more than normal when recovery lags, signaling the body is under persistent stress from training. That heightened acute catecholamine response is the best indicator among the options. Increased appetite isn’t a typical marker of anaerobic overtraining; stress and energy imbalance can actually blunt appetite in many cases. Decreased bone density can be a long-term risk with chronic imbalances or hormonal changes but isn’t a direct, immediate marker of overtraining. Improved sprint performance would contradict the expected outcome of overtraining, which is usually diminished performance.

When athletes push into overtraining, especially with high-intensity, anaerobic work, the body’s stress response often stays activated. A clear physiological sign of this is an exaggerated release of catecholamines—epinephrine and norepinephrine—during or after exercise. These hormones drive rapid energy mobilization for bursts of effort, and their levels tend to rise more than normal when recovery lags, signaling the body is under persistent stress from training. That heightened acute catecholamine response is the best indicator among the options.

Increased appetite isn’t a typical marker of anaerobic overtraining; stress and energy imbalance can actually blunt appetite in many cases. Decreased bone density can be a long-term risk with chronic imbalances or hormonal changes but isn’t a direct, immediate marker of overtraining. Improved sprint performance would contradict the expected outcome of overtraining, which is usually diminished performance.