A correlational research between sleep duration,timing and the risk of osteoporosis in postmenopausal women

Objective To investigate the correlation between sleep duration,sleep timing and the risk of osteoporosis in postmenopausal women,to identify contributing mechanisms and guide the prevention and treatment of osteoporosis.Methods A total of 5 449 postmenopausal women were included in this study.All participants completed questionnaires,medical examinations,blood test and the measurement of bone mineral density using calcaneal quantitative ultrasonography.