生物电阻抗分析得出的相位角能否预测与健康相关的肌肉骨骼适应性？一项针对年轻人的横断面研究。
Could BIA-derived phase angle predict health-related musculoskeletal fitness? A cross-sectional study in young adults.
作者信息
Ballarin Giada, Valerio Giuliana, Alicante Paola, Di Vincenzo Olivia, Monfrecola Fabiana, Scalfi Luca
机构信息
Department of Medical, Movement and Wellbeing Sciences, University of Naples "Parthenope", Naples, Italy.
Department of Public Health, Federico II University of Naples, Naples, Italy.
出版信息
Nutrition. 2024 Jun;122:112388. doi: 10.1016/j.nut.2024.112388. Epub 2024 Feb 7.
OBJECTIVES
To our knowledge, little evidence exists on the relationships between body composition and health-related physical fitness; in particular, musculoskeletal fitness. Bioimpedance index phase angle (bioelectrical impedance analysis raw variables) is a candidate predictor of health-related fitness, a marker of fat-free and body cell mass, respectively. The aim of this study was to evaluate body composition, raw bioelectrical impedance analysis variables, and health-related fitness in young adults and investigate their mutual relationships to identify predictors of muscle strength.
METHODS
The study included 229 young adults (115 men and 114 women; 24.2 ± 3 y; body mass index 19-30 kg/m²). Anthropometry was measured with standardized procedures. Whole-body BIA (50 kHz) was performed for impedance and phase angle. Predictive equations estimated fat-free mass and percentage body fat. The bioimpedance index was calculated as stature²/impedance. Musculoskeletal fitness was assessed by handgrip strength, standing broad jump, squat jump, and countermovement jump.
RESULTS
In both sexes, health-related fitness had stronger associations with body composition than stature or weight. Handgrip strength was related to fat-free mass and bioimpedance index, while an inverse association with percent body fat emerged for standing broad jump, squat jump and countermovement jump. Phase angle is directly correlated with handgrip strength, standing broad jump, squat jump, and countermovement jump. In multiple regression analysis phase angle was an independent predictor of all health-related fitness tests, along with fat-free mass (or bioimpedance index) for handgrip strength, and with sex and percent body fat for the three jump tests.
CONCLUSIONS
The present study provided consistent information on the relationships between body composition and health-related fitness in young adults. Phase angle emerged as a significant predictor of all health-related fitness measures and might be useful for a more consistent assessment of musculoskeletal fitness.
目的
据我们所知，关于身体成分与健康相关身体素质之间的关系，尤其是肌肉骨骼健康方面的证据很少。生物电阻抗指数相位角（生物电阻抗分析原始变量）是健康相关身体素质的候选预测指标，分别是无脂肪和身体细胞质量的标志物。本研究的目的是评估年轻成年人的身体成分、生物电阻抗分析原始变量和健康相关身体素质，并研究它们之间的相互关系，以确定肌肉力量的预测指标。
方法
该研究纳入了229名年轻成年人（115名男性和114名女性；24.2±3岁；体重指数19 - 30kg/m²）。采用标准化程序进行人体测量。进行全身生物电阻抗分析（50kHz）以测量阻抗和相位角。通过预测方程估算无脂肪质量和体脂百分比。生物电阻抗指数计算为身高²/阻抗。通过握力、立定跳远、深蹲跳和反向纵跳评估肌肉骨骼健康状况。
结果
在男女两性中，与身体成分相比，健康相关身体素质与身高或体重的关联更强。握力与无脂肪质量和生物电阻抗指数相关，而立定跳远、深蹲跳和反向纵跳与体脂百分比呈负相关。相位角与握力、立定跳远、深蹲跳和反向纵跳直接相关。在多元回归分析中，相位角是所有健康相关身体素质测试的独立预测指标，握力测试中与无脂肪质量（或生物电阻抗指数）一起，三项跳跃测试中与性别和体脂百分比一起。
结论
本研究提供了关于年轻成年人身体成分与健康相关身体素质之间关系的一致信息。相位角成为所有健康相关身体素质指标的重要预测指标，可能有助于更一致地评估肌肉骨骼健康状况。
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