super-athlete       
noun [ C ] (also superathlete) uk/ˈsuː.pərˌæθ.liːt/ us/ˈsuː.pɚˌæθ.liːt/
 (尤指在竞赛中极为成功)超级运动员
a person who is extremely successful at sports or physical exercise, especially one who competes in organized events
  I'd like to reach the same level of health as a super-athlete.
 Developments in sports science are helping to create new superathletes. 运动科学的发展正在帮助创造新的超级运动员。 
 - More examples
- The classes won't turn you into a super-athlete.
- She was portrayed in the media as a super-athlete.
- She was on her way to becoming a superathlete by the time she started high school.
- We should not expect all children to become super-athletes.