BACKGROUND:Although trunk muscles are involved in many important functions, evaluating trunk muscle strength is not an easy task. If trunk muscle mass and thickness could be used as indicators of trunk muscle strength, the burden of measurement would be reduced, but the relationship between trunk muscle strength and trunk muscle mass and thickness has not been clarified. OBJECTIVE:The purpose of this study was to clarify the relationship between trunk muscle strength and trunk muscle mass by bioelectrical impedance analysis and trunk muscle thickness by ultrasound imaging in healthy adults. METHODS:One hundred and twenty-one healthy university students were included in this study. Trunk flexion/extension muscle strength and trunk muscle mass by bioelectrical impedance analysis, and trunk muscle thickness by ultrasound imaging were measured. RESULTS:Both trunk flexion strength and trunk extension strength were significantly correlated with trunk muscle mass and oblique and rectus abdominis muscle thickness. Multiple regression analysis showed that trunk extension muscle strength had an independent relationship with trunk muscle mass. CONCLUSIONS:This study demonstrated that trunk muscle mass or trunk muscle thickness can be used as an alternative means for evaluating trunk muscle strength, making the evaluation of trunk muscles less burdensome.

中文翻译：

---

使用生物电阻抗分析和超声成像的躯干肌肉力量与躯干肌肉质量和厚度之间的关系

背景：虽然躯干肌肉参与了许多重要的功能，但评估躯干肌肉力量并不是一件容易的事。如果可以将躯干肌肉质量和厚度作为躯干肌肉力量的指标，可以减轻测量负担，但躯干肌肉力量与躯干肌肉质量和厚度之间的关系尚未明确。目的：本研究旨在通过生物电阻抗分析阐明躯干肌肉力量与躯干肌肉质量之间的关系，并通过超声成像阐明躯干肌肉厚度之间的关系。方法：本研究纳入121名健康大学生。通过生物电阻抗分析测量躯干屈伸肌力和躯干肌肉质量，通过超声成像测量躯干肌肉厚度。结果：躯干屈曲力量和躯干伸展力量均与躯干肌肉质量和腹斜肌和腹直肌厚度显着相关。多元回归分析表明，躯干伸展肌力与躯干肌肉质量呈独立关系。结论：本研究表明，躯干肌肉质量或躯干肌肉厚度可以作为评估躯干肌肉力量的替代手段，从而减轻躯干肌肉的评估负担。