Final answer:
A sports physiologist can help a professional athlete improve their performance by assessing physical capabilities, designing a training program, providing guidance on nutrition and recovery, and helping with stress and mental techniques.
Step-by-step explanation:
A sports physiologist can help a professional athlete improve their performance in several ways. First, they can assess the athlete's physical capabilities, such as strength, endurance, and balance, and design a customized training program to target areas of improvement. They can also provide guidance on nutrition and hydration, as well as recovery strategies to optimize performance. Additionally, a sports physiologist can help the athlete manage stress and develop mental techniques to enhance focus and confidence.