在娱乐性进行阻力训练的老年女性的短期去训练中,交叉教育是否能最大限度地减少肌肉力量和sEMG振幅的损失?

IF 2 4区 医学 Q3 NEUROSCIENCES
Daniel de Souza Teixeira , Marcelo A.S. Carneiro , Augusto Corrêa de Queiroz Freitas , Anderson Diogo de Souza Lino , Danyelle Cristina Silva Pelet , Cláudio O. Assumpção , Markus Vinicius Campos Souza , Fábio Lera Orsatti
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引用次数: 0

摘要

本研究旨在研究与对照组(CTL)相比,4周的单侧阻力训练(RT)是否可以减轻娱乐性参与RT的老年女性对侧肢体肌肉功能的下降。24名参与者在交叉教育(CR Edu)阶段和随后的退训之前完成了为期10周的RT。之后,参与者被随机分为两组:CTL(n=8名女性,n=16条腿)和CR Edu(n=16名女性,n=16条腿),她们在没有任何训练的情况下进行了4周的单侧RT。在4周前后单侧测量肌肉力量、力量和表面肌电图,使用在1RM的40%和60%下进行的五次重复。结果显示,在1RM的40%和60%时,肌肉力量都减少了,在1RM的60%时,力量也减少了(P时间0.05
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Does cross-education minimize the loss of muscle force and power and sEMG amplitude during short-term detraining in older women who are recreationally engaged in resistance training?

This study aimed to investigate whether 4 weeks of unilateral resistance training (RT) could attenuate the decline in muscle function in the contralateral limb of older women recreationally engaged in RT compared to control group (CTL). Twenty-four participants completed a 10-week RT before the cross-education (CR-Edu) phase and subsequent detraining. Afterward, participants were randomized into two groups: CTL (n = 8 women, n = 16 legs) who underwent 4 weeks of detraining without any training, and CR-Edu (n = 16 women, n = 16 legs) who performed 4 weeks of unilateral RT. Muscle force, power, and surface electromyography were measured unilaterally before and after the 4-week period, using five repetitions conducted at 40% and 60% of the 1RM. The results showed a reduction in muscle force at both 40% and 60% of 1RM, as well as a decrease in power at 60% of 1RM (P-time < 0.05) without significant differences between the two groups (P interaction > 0.05). There was a decline in power at 60% of 1RM (P-time < 0.05) but no significant change at 40% of 1RM (P-time > 0.05), and again, no significant differences were observed between the groups (P-interaction > 0.05). The surface electromyography of vastus lateralis decreased only in the CTL group (P-interaction < 0.05). Older women recreationally engaged in RT who perform in unilateral leg extension compared to a brief period of detraining seem not to retain muscle force and power, and sEMG amplitude of their homologous and contralateral limb.

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来源期刊
CiteScore
4.70
自引率
8.00%
发文量
70
审稿时长
74 days
期刊介绍: Journal of Electromyography & Kinesiology is the primary source for outstanding original articles on the study of human movement from muscle contraction via its motor units and sensory system to integrated motion through mechanical and electrical detection techniques. As the official publication of the International Society of Electrophysiology and Kinesiology, the journal is dedicated to publishing the best work in all areas of electromyography and kinesiology, including: control of movement, muscle fatigue, muscle and nerve properties, joint biomechanics and electrical stimulation. Applications in rehabilitation, sports & exercise, motion analysis, ergonomics, alternative & complimentary medicine, measures of human performance and technical articles on electromyographic signal processing are welcome.
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