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Effect of Skeletal Muscle and Fat Mass on Muscle Strength in the Elderly

1
Faculty of Physical Therapy, Department of Health Sciences, Kyoto Tachibana University, Kyoto 607-8175, Japan
2
Faculty of Physical Therapy, Department of Rehabilitation, Kobe International University, Kobe 658-0032, Japan
3
Department of Physical Therapy, Hakuho College, Oji 636-0011, Japan
*
Author to whom correspondence should be addressed.
Healthcare 2018, 6(3), 72; https://doi.org/10.3390/healthcare6030072
Received: 25 May 2018 / Revised: 21 June 2018 / Accepted: 22 June 2018 / Published: 26 June 2018
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Abstract

It is important for elderly people to maintain or improve muscle strength and for clinicians to know the factors that affect muscle strength. Therefore, the purpose of this study was to compare the effects of fat mass (FM) and skeletal muscle mass (SMM) on muscle strength. The participants included 192 community-dwelling elderly women. The SMM and FM, grip strength, and knee extension strength were measured. Data were evaluated using stepwise multiple linear regression analysis, which was performed with grip or knee extension strength as a dependent variable and the SMM and FM of the upper and lower limbs as the independent variables. The SMM and FM of the upper limbs were associated with grip strength, whereas the SMM but not the FM of the lower limbs was associated with knee extension strength. These findings suggest that there may be thresholds for the SMM/FM ratio to affect muscle strength. View Full-Text
Keywords: muscle strength; skeletal muscle mass; fat mass; grip strength; knee extension strength muscle strength; skeletal muscle mass; fat mass; grip strength; knee extension strength
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Nonaka, K.; Murata, S.; Shiraiwa, K.; Abiko, T.; Nakano, H.; Iwase, H.; Naito, K.; Horie, J. Effect of Skeletal Muscle and Fat Mass on Muscle Strength in the Elderly. Healthcare 2018, 6, 72.

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