Sports performers seeking a competitive edge know that sport psychology plays an important role in maximising performance.  To understand the importance of psychological preparation and control in both individual and team sports a number of factors must be explored.  While sports performance is reliant on the correct training and nutritional strategy, it is also important that the athlete is appropriately motivated, has control of their arousal levels, is confident of success, has the appropriate focus and is mentally prepared for competition. It is the role of the sports psychologist to develop these skills with the performer and teach them when to apply them so that they can apply them to personal performance and to the performance of other sports performers.  Psychological skills can be applied to training and competition and can be used with all levels of performer.

This is from the BTEC spec for unit 17 and shows a very Mental Skills Training perspective of sport psychology.