Spinal kinetics at athletes includes intrinsic and extrinsic forces that can affect the spine. The sources of low back pain include the intervertebral ... contraction for abdominal and extensors ...

They may need more intrinsic feedback to refine and master those skills. However, experienced performers will also need extrinsic feedback to overcome persistent problems and to develop more ...

Motivation can take two forms - intrinsic and extrinsic. Intrinsic motivation is the inner drive to succeed, engaging in the task or adhering to the activity for fun, enjoyment and satisfaction.