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J Am Geriatr Soc. 2008 Sep;56(9):1710-5. doi: 10.1111/j.1532-5415.2008.01854.x. Epub 2008 Aug 6.

Prevalence of sarcopenia estimated using a bioelectrical impedance analysis prediction equation in community-dwelling elderly people in Taiwan.

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School and Graduate Institute of Physical Therapy, College of Medicine, National Taiwan University, Zhongzheng District, Taipei, Taiwan.



To compare a bioelectrical impedance analysis (BIA) prediction equation for estimating skeletal muscle mass (SM) with magnetic resonance imaging (MRI)-measured SM and to investigate the prevalence of sarcopenia in community-dwelling elderly people in Taiwan.


Cross-sectional survey.


Communities in the district of Zhongzheng, Taipei.


Forty-one volunteers (aged 22-90) for BIA equation validation; 302 individuals aged 65 and older and 200 adults aged 18 to 40 for the investigation of the prevalence of sarcopenia.


Skeletal muscle mass was estimated using a BIA prediction equation and measured using MRI.


No statistical difference between MRI-measured and BIA-derived SM was observed (difference of -0.44 +/- 1.55 kg, P=.08). The prevalence of sarcopenia in was 18.6% in elderly women and 23.6% in elderly men.


Estimation of SM using a BIA equation was validated in Taiwanese volunteers. It was confirmed that sarcopenia is an emerging health problem in the aging population in Taiwan.

[Indexed for MEDLINE]

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