ABSTRACT
The incidences of osteoporotic hip fracture were increased in both men and women, when data were analysed and compared with that from 30 years ago (Hagino et al., 2005). The crude incidence of osteoporotic hip fracture was 244.8 per 100,000 persons years from 2004 to 2006 in a Japanese population aged 35 years or older. Predominantly due to falls, 30 per cent of individuals after a hip fracture become functionally dependent and require long-term nursing care. To protect against osteoporosis and concomitant fractures, studies of weight-bearing exercise may be of substantial clinical importance. They may be able to provide distributional information related to the vertical ground reaction force and exercise intensity. In particular, force-generating activities have been shown to produce significant effects on attaining optimal bone mass and bone strength (Burr et al., 1983).
