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Effects of 1-year weight loss intervention on abdominal skeletal muscle mass in Japanese overweight men and women.
- Source :
-
Asia Pacific journal of clinical nutrition [Asia Pac J Clin Nutr] 2019; Vol. 28 (1), pp. 72-78. - Publication Year :
- 2019
-
Abstract
- Background and Objectives: Limited information is available on how weight loss intervention programs affect skeletal muscle mass especially in trunk.<br />Methods and Study Design: A total of 235 overweight Japanese men and women aged 40-64 years with a body mass index of 28.0 to 44.8 kg/m2 participated in this randomized controlled intervention study. They were randomly divided into a lifestyle intervention group and control group. Before and after the one-year lifestyle intervention for weight loss an abdominal transverse image was acquired by computed tomography. The cross-sectional areas (CSAs) of visceral fat, subcutaneous fat, and skeletal muscle of rectus abdominis, abdominal oblique, iliopsoas, and erector spinae muscle were calculated.<br />Results: The body weight changed by approximately -5% in the intervention groups. The corresponding values for subcutaneous fat and visceral fat CSAs were -10.8 to -17.5% in both sexes. The reductions observed in skeletal muscle CSAs were significantly less (-6.0% and -7.2% in the men and women intervention groups respectively) than those in fat tissue CSAs. The CSA of each of the four skeletal muscle groups also significantly decreased; however, after adjustments for body weight at each time point, only reductions in the iliopsoas muscle in both sex and abdominal oblique muscles in men remained significant.<br />Conclusions: The lifestyle weight loss intervention might reduce the relative amount of the abdominal skeletal muscles especially in iliopsoas muscle.
Details
- Language :
- English
- ISSN :
- 1440-6047
- Volume :
- 28
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Asia Pacific journal of clinical nutrition
- Publication Type :
- Academic Journal
- Accession number :
- 30896417
- Full Text :
- https://doi.org/10.6133/apjcn.201903_28(1).0011