Ludwig Oliver, Berger Joshua, Becker Stephan, Kemmler Wolfgang, Fröhlich Michael
Department of Sports Science, Faculty of Social Sciences, University of Kaiserslautern, Kaiserslautern, Germany.
Institute of Medical Physics, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany.
Front Physiol. 2019 Aug 20;10:1020. doi: 10.3389/fphys.2019.01020. eCollection 2019.
Muscular imbalances of the trunk muscles are held responsible for changes in body posture. At the same time, whole-body electromyostimulation (WB-EMS) has been established as a new training method that enables simultaneous stimulation of many muscle groups. This study was aiming to analyze if a 10 weeks WB-EMS training changes posture-relevant parameters and/or improves isometric strength of the trunk extensors and flexors, and if there are differences based on stimulation at 20 Hz and 85 Hz. Fifty eight untrained adult test persons were divided into three groups (control, CON; training with 20 Hz stimulation, TR20; training with 85 Hz, TR85). Anthropometric parameters, trunk extension and flexion forces and torques, and posture parameters were determined before ( = 58) and after ( = 53: CON: = 15, TR20: = 19, TR85: = 19) a 10 weeks WB-EMS training program (15 applications, 9 exercises). Differences between the groups were calculated for pre- and post-tests using univariate ANOVA and between the test times using repeated (2 × 3) ANOVA. Comparisons of pairs were calculated based on Fisher (LSD). No differences between the groups were found for the posture parameters. The analysis of both trunk flexion and trunk extension forces and torques showed a significant difference between the groups TR85 and CON but no difference between the other group pairs. A 10 weeks whole-body electrostimulation training with a stimulation frequency of 85 Hz in contrast to training with a stimulation frequency of 20 Hz improves the trunk muscle strength of an untrained group but does not significantly change posture parameters.
躯干肌肉的肌肉失衡被认为是身体姿势变化的原因。与此同时，全身肌电刺激（WB - EMS）已成为一种新的训练方法，能够同时刺激多个肌肉群。本研究旨在分析为期10周的WB - EMS训练是否会改变与姿势相关的参数和/或提高躯干伸肌和屈肌的等长力量，以及基于20Hz和85Hz刺激是否存在差异。58名未经训练的成年测试者被分为三组（对照组，CON；20Hz刺激训练组，TR20；85Hz刺激训练组，TR85）。在为期10周的WB - EMS训练计划（15次应用，9项练习）之前（n = 58）和之后（n = 53：CON：n = 15，TR20：n = 19，TR85：n = 19）测定人体测量参数、躯干伸展和屈曲力及扭矩以及姿势参数。使用单因素方差分析计算组间前后测试的差异，使用重复（2×3）方差分析计算测试时间之间的差异。基于Fisher（LSD）计算成对比较。姿势参数在组间未发现差异。对躯干屈曲和伸展力及扭矩的分析显示，TR85组和CON组之间存在显著差异，但其他组对之间没有差异。与20Hz刺激频率的训练相比，85Hz刺激频率的为期10周的全身电刺激训练可提高未经训练组的躯干肌肉力量，但不会显著改变姿势参数。
