title: [Economical efficacy of physical exercises for osteoporosis].
abstract: From mean 12.5% increase of lumbar bone mineral density by one year's physical training, it is calculated to reduce the frequency of femoral neck fracture by 80% and the rate of falls by 50%. And 60% reduction of femoral neck fracture by physical exercise gains about 200 billion yen of medical and care costs annually, because a patient with femoral neck fracture consumes mean 1,320,000 yen for medical treatments and about 19% of the patients become bed-ridden state after the treatments for mean 5 years.
authors.affiliation: Tokyo Metropolitan Tama Geriatric Hospital.
authors.forename: Yasufumi
authors.initials: Y
authors.lastname: Hayashi