The pressure and stress exerted upon the feet and lower extremities can be substantial. A common class of sports-related injury is stress fractures.

About 90 per cent of adults will experience acute back strain and pain in their lifetime. It is a leading cause of work absenteeism and reduced productivity in Canada and the United States. Interestingly, most back pain resolves regardless of the type of therapy used. Indeed, most will return to work within three months of the injury. The problem is some will continue to experience recurrent back strain and movement limitations.