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 ...

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.

The adapted intrinsic and extrinsic injury related risk factors were tested for significance difference and correlations. Results Significant results were found in intrinsic factors: age (10 body-part ...