The purpose of this study was to compare the prevalence of severe sarcopenia detected by total skeletal muscle mass (SM) index and of site-specific thigh sarcopenia for differing age groups in men and women. Japanese nonobese men and women aged 20 to 85 (n=1,994, 55% women) had muscle thickness (MTH) measured by ultrasound at six sites on the anterior and posterior aspects of the body. SM was estimated from ultrasound-derived prediction equations. Site-specific thigh sarcopenia was calculated using ultrasound-measured MTH at the anterior and posterior aspects of the thigh (MTH ratio, anterior 50%/posterior 50% thigh MTH (A50/P50 MTH)). Sarcopenia was defined as a SM index (SM divided by height2) of >2 standard deviations (SD) below the mean for young adults. Site-specific thigh sarcopenia was defined as a ratio of A50/P50 MTH of >2 SD below the mean for young adults. Age was inversely correlated to SM index and A50/P50 MTH in men (r = -0.480 and r = -0.522) and women (r = -0.243 and r = -0.516). The prevalence rate of sarcopenia was less than 3% for women under the age of 60, 7%for ages 60-69, and 24%for ages 70-80. In men, the prevalence rate of sarcopenia was less than 7% under the age of 50, 18% for ages 50-59, 33% for ages 60-69, and 47% for ages 70-85. Compared to the sarcopenia estimated by SM index, there was a higher prevalence of site-specific thigh sarcopenia observed in both sexes. These results suggest that site-specific thigh sarcopenia appears before it is able to be detected at the whole body level. © American Aging Association 2013.
CITATION STYLE
Abe, T., Thiebaud, R. S., Loenneke, J. P., Loftin, M., & Fukunaga, T. (2014). Prevalence of site-specific thigh sarcopenia in Japanese men and women. Age, 36(1), 417–426. https://doi.org/10.1007/s11357-013-9539-6
Mendeley helps you to discover research relevant for your work.