Which effect can overtraining have on an athlete?

Overtraining is a condition that occurs when an athlete trains beyond their body's ability to recover, leading to various negative physiological and psychological effects. The correct response highlights that overtraining can result in decreased performance and mood changes.

When an athlete is overtrained, they may experience fatigue that is not alleviated by rest, leading to a decline in overall performance, such as slower times, reduced strength, and lack of coordination. This decrease in performance is often accompanied by mood disturbances, which may include irritability, anxiety, or even depression. These emotional changes can further impact the athlete's motivation, creating a cycle that exacerbates the problem.

In contrast, other options present unrealistic outcomes of overtraining. For example, increased motivation and morale, improved performance in all aspects, and enhanced recovery are typically associated with proper training regimens and sufficient recovery periods. Overtraining clearly disrupts these positive aspects of athletic development, making them unlikely outcomes under these circumstances. Understanding the signs of overtraining and its consequences is crucial for sustaining long-term athletic performance and maintaining overall well-being.