Localized bioelectric impedance parameters can predict quadriceps muscle strength, but not independently from lean soft tissue in young adults

IF 2.6 Q3 NUTRITION & DIETETICS

Clinical nutrition ESPEN Pub Date : 2025-08-06 DOI:10.1016/j.clnesp.2025.07.022

Brenda Carla Sene Vaz , Pâmela Teodoro Oliveira , Maria Eduarda Fernandes Leite , Natália Viana Isoldino , Jeniffer Kelly Christiano , Nubia Maria Oliveira , Catarina Nunes Matias , Gil Guerra-Júnior , Ezequiel Moreira Gonçalves

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引用次数: 0

Abstract

Objective

To verify the relationship between muscular strength, determined by an isokinetic dynamometer, and the parameters of whole-body and localized bioelectrical impedance analysis (WB-BIA and L-BIA) in young adults of both sexes.

Methods

This is a cross-sectional study involving 66 university students (ages 18 to 30, 41 women). Dual-energy X-ray absorptiometry (DXA) was used to determine lean soft tissue (LST in kg). Resistance (R), reactance (Xc), and phase angle (PhA) were assessed both for whole-body and localized (thigh) measurements using a 50 kHz tetrapolar unifrequency BIA device. Isometric and isokinetic peak torque (PT) and mean peak torque (PTM) during knee extension were measured using an isokinetic dynamometer.

Results

LST was the variable that best explained muscular strength in both sexes (adjusted R²: ≥0.60; p < 0.001). In males, the variables WB-R, WB-Xc, and thigh Xc showed the strongest relationships with muscular strength indicators (adjusted R²: 0.25 to 0.45; p < 0.05). In females, WB-R and thigh R were the BIA parameters that showed the strongest relationships with muscular strength indicators (adjusted R²: 0.25 to 0.46; p < 0.05). Thigh R was the only parameter that independently and significantly explained the isometric PTM (β: −0.292; p = 0.029), whereas all other BIA parameters, whether whole-body or thigh-related, demonstrated dependent relationships with LST. When comparing the tertiles of LST, it was observed in both sexes that the amount of LST influenced muscular strength and the whole-body and thigh BIA parameters (p < 0.05).

Conclusion

In our sample, although both whole-body and localized BIA parameters showed significant relationships with muscular strength in both sexes, only thigh R in the female group was an independent predictor of LST in isometric PTM.

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局部生物电阻抗参数可以预测四头肌力量，但不能独立于年轻人的瘦软组织。

目的：验证等动测力仪测定的肌肉力量与男女青年全身和局部生物电阻抗分析（WB-BIA和L-BIA）参数之间的关系。方法：这是一项横断面研究，涉及66名大学生（18至30岁，41名女性）。采用双能x线吸收仪（DXA）测定瘦软组织（LST (kg)）。电阻(R)、电抗（Xc）和相位角（PhA）使用50 kHz四极低频BIA装置进行全身和局部（大腿）测量。使用等速测力仪测量膝关节伸展时的等速和等速峰值扭矩（PT）和平均峰值扭矩（PTM）。结果：LST是最能解释两性肌肉力量的变量(校正R2:≥0.60；P2: 0.25 ~ 0.45；P2: 0.25 ~ 0.46；结论：在我们的样本中，尽管男女的全身和局部BIA参数都与肌肉力量有显著关系，但只有女性组的大腿R是等长PTM中LST的独立预测因子。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Clinical nutrition ESPEN NUTRITION & DIETETICS-

CiteScore

4.90

自引率

3.30%

发文量

512

期刊介绍： Clinical Nutrition ESPEN is an electronic-only journal and is an official publication of the European Society for Clinical Nutrition and Metabolism (ESPEN). Nutrition and nutritional care have gained wide clinical and scientific interest during the past decades. The increasing knowledge of metabolic disturbances and nutritional assessment in chronic and acute diseases has stimulated rapid advances in design, development and clinical application of nutritional support. The aims of ESPEN are to encourage the rapid diffusion of knowledge and its application in the field of clinical nutrition and metabolism. Published bimonthly, Clinical Nutrition ESPEN focuses on publishing articles on the relationship between nutrition and disease in the setting of basic science and clinical practice. Clinical Nutrition ESPEN is available to all members of ESPEN and to all subscribers of Clinical Nutrition.