@article{oai:hirosaki.repo.nii.ac.jp:00003743,
 author = {Sumigawa, Koshi and Takahashi, Ippei and Matsuzaka, Masashi and Danjo, Kazuma and Koeda, Shuhei and Hirakawa, Yuichi and Kogawa, Terumi and Kamitani, Hidefumi and Umeda, Takashi and Nakaji, Shigeyuki},
 issue = {1},
 journal = {弘前医学},
 month = {May},
 note = {To clarify how osteoporosis is influenced by the period after menopause. Methods: Our participants comprised 756 females. We used a questionnaire to ask participants about their lifestyle, number of deliveries, and age at which menopause occurred. We measured bone density, body mass index （BMI）, body fat percentage（ BFP）, total body muscle index（ TBMI）, and lower limb muscle index（ LLMI） during each of the following periods: before menopause, up to 15 years after menopause, and more than 16 years after menopause. Results: TBMI, BMI and BFP were significantly higher in premenopausal participants with higher bone density. Furthermore, higher bone density was observed in participants who had  given birth fewer times had a and higher frequency of exercise. TBMI, LLMI, BMI and BFP were significantly higher in participants up to 15 years after menopause with higher bone density, and a trend wherein they were higher in participants who had progressed significantly fewer years after menopause was observed. TBMI, LLMI and BMI were significantly higher in participants more than 16 years after menopause with higher bone density. Conclusion: Risk factors for osteoporosis differed according to the number of years after menopause. Especially for postmenopausal women, it is important to maintain/increase lower limb muscle mass., 弘前医学. 63, 2012, p.38-47},
 pages = {38--47},
 title = {Risk Factors of Osteoporosis according to the Number of Years after Menopause},
 volume = {63},
 year = {2012}
}