Final answer:
Emotional disorders impacting sport performance, such as eating disorders and drug abuse, are typically treated by a clinical sport psychologist who is trained to address such psychological issues and develop comprehensive treatment plans.
Step-by-step explanation:
Emotional disorders such as eating disorders and drug abuse affecting sport performance would best be treated by a clinical sport psychologist.
Clinical sport psychologists specialize in diagnosing and treating psychological disorders and problematic behaviors that can impact sports performance.
They are equipped to provide mental health counseling, which may include approaches like cognitive behavioral therapy.
Moreover, they are also qualified to work in conjunction with other health professionals to create a comprehensive treatment plan which could include medications, nutritional counseling, and possibly hospitalization for severe cases.
The interdisciplinary nature of sport and exercise psychology involves understanding the interactions between mental and emotional wellbeing and physical performance. It encompasses the assessment and development of strategies to enhance performance and personal growth within the sporting context.
In more serious cases, issues such as eating disorders - commonly seen in athletes who may feel pressured to maintain a certain weight - are addressed within the framework of clinical psychology, involving often complex treatment regimens.