Associations between Low Bone Mass, Low Muscle Mass, and Physical Activity in Community-dwelling Older Adults

DOI Open Access
  • TANIGUCHI Yoshiaki
    Graduate School of Health Sciences, Kagoshima University Department of Physical Therapy, Kagoshima Medical Professional College
  • MAKIZAKO Hyuma
    School of Health Sciences, Faculty of Medicine, Kagoshima University
  • NAKAI Yuki
    Department of Mechanical Systems Engi neering, Faculty of Engineering, Daiichi Institute of Technology
  • TOMIOKA Kazutoshi
    Tarumizu Municipal Medical Center, Tarumizu Chuo Hospital
  • KUBOZONO Takuro
    Department of Cardiovascular Medicine and Hypertension, Graduate School of Medical and Dental Sciences, Kagoshima University
  • TAKENAKA Toshihiro
    Tarumizu Municipal Medical Center, Tarumizu Chuo Hospital
  • OHISHI Mitsuru
    Department of Cardiovascular Medicine and Hypertension, Graduate School of Medical and Dental Sciences, Kagoshima University

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Other Title
  • 地域在住高齢者における骨量および筋量の低下と身体活動との関連性

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<p>Objective: The purpose of this study was to examine the relationship between low bone mass, low muscle mass, and physical activity in community-dwelling older adults.</p><p>Methods: Data obtained from 173 older adults who participated in a community-based health-check survey (Tarumizu Study 2018) were analyzed. Bone mass was measured using the speed of sound (SOS) of the calcaneal bone and was considered low when the percentage of the %YAM of the SOS was ≤70%. Muscle mass was assessed based on the criteria for sarcopenia by the AWGS. Physical activity was measured using an accelerometer to determine whether there was an increase in sedentary activity time, a decrease in MVPA time, and a decrease in step count Classified. The groups were classified into healthy (normal bone and muscle masses), low bone mass (only bone mass decreased), low muscle mass (only muscle mass decreased), and low bone/muscle mass groups (both bone and muscle masses decreased).</p><p>Results: As a result of logistic regression analysis, MVPA time was significantly decreased in the bone loss and muscle loss groups compared with the normal group (odds ratio, 3.29; p<0.05; covariates: age [5 years], sex, depression tendency, and decreased walking speed).</p><p>Conclusion: This study indicated that MVPA levels were lower in the older adults who had lower bone and muscle masses.</p>

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