The present study compared metabolic risk factors, physical performances, and musculoskeletal impairment among categories determined by visceral adipose tissue (VAT) and trunk skeletal muscle (SM) mass in middle-aged Japanese men. In total, 1026 healthy Japanese males aged between 35 and 59 years were categorized into 4 groups according to the amount of VAT and SM in the trunk measured using low-dose computed tomography (LowVAT-HighSM, LowVAT-LowSM, HighVAT-HighSM, and HighVAT-LowSM). Height, body mass waist circumference, body fat, intramuscular adipose tissue (IntraMAT), subcutaneous adipose tissue, biochemical blood profiles (triglycerides, high-density lipoprotein cholesterol, fasting blood glucose, aspartate transaminase, alanine transaminase and γ-glutamyl trans peptidase), physical performances (trunk flexibility, the chair-stand test, two-step length and hand-grip strength), the prevalence of low back pain, and lifestyle habits for exercise, alcohol intake and smoking, were compared among the groups. The results showed that LowVAT-HighSM had significantly superior biochemical blood profiles and physical performances to the other groups. HighVAT-LowSM had significantly higher %IntraMAT and the prevalence of low back pain. The two-step length, which is an index of walking ability, significantly differed according to the four subject categories. These results indicate that metabolic risk factors, physical performances, and prevalence of low back pain in middle-aged Japanese men may differ among four categories determined by VAT and trunk SM.

本研究比较了日本中年男性内脏脂肪组织 (VAT) 和躯干骨骼肌 (SM) 质量确定的类别中的代谢危险因素、身体机能和肌肉骨骼损伤。根据使用低剂量计算机断层扫描（LowVAT-HighSM、LowVAT-LowSM、HighVAT-HighSM 和高增值税-低 SM）。身高、体重腰围、体脂、肌内脂肪组织（IntraMAT）、皮下脂肪组织、生化血型（甘油三酯、高密度脂蛋白胆固醇、空腹血糖、天冬氨酸转氨酶、丙氨酸转氨酶和γ-谷氨酰转肽酶），身体表现（躯干柔韧性、椅架试验、两步长度和握力），腰痛的患病率，以及运动、饮酒和吸烟的生活习惯，在各组之间进行了比较。结果表明，LowVAT-HighSM 的生化血型和身体机能明显优于其他组。HighVAT-LowSM 具有显着更高的 IntraMAT 百分比和腰痛患病率。作为步行能力指标的两步长度根据四个科目类别有显着差异。这些结果表明，在由 VAT 和躯干 SM 确定的四个类别中，日本中年男性的代谢危险因素、身体表现和腰痛患病率可能不同。进行了组间比较。结果表明，LowVAT-HighSM 的生化血型和身体机能明显优于其他组。HighVAT-LowSM 具有显着更高的 IntraMAT 百分比和腰痛患病率。作为步行能力指标的两步长度根据四个科目类别有显着差异。这些结果表明，在由 VAT 和躯干 SM 确定的四个类别中，日本中年男性的代谢危险因素、身体表现和腰痛患病率可能不同。进行了组间比较。结果表明，LowVAT-HighSM 的生化血型和身体机能明显优于其他组。HighVAT-LowSM 具有显着更高的 IntraMAT 百分比和腰痛患病率。作为步行能力指标的两步长度根据四个科目类别有显着差异。这些结果表明，在由 VAT 和躯干 SM 确定的四个类别中，日本中年男性的代谢危险因素、身体表现和腰痛患病率可能不同。这是步行能力的指标，根据四个学科类别有显着差异。这些结果表明，在由 VAT 和躯干 SM 确定的四个类别中，日本中年男性的代谢危险因素、身体表现和腰痛患病率可能不同。这是步行能力的指标，根据四个学科类别有显着差异。这些结果表明，在由 VAT 和躯干 SM 确定的四个类别中，日本中年男性的代谢危险因素、身体表现和腰痛患病率可能不同。