Laboratoire Etudes Sociales et Humaines et Analyse des Activités Physiques et Sportives, Département EPS, Université Badji Mokhtar Annaba, BP 12, 23000, Annaba, Algeria.
Laboratoire Mouvement, Equilibre, Performance et Santé (EA 4445), Département STAPS, ZA Bastillac Sud, Université de Pau et des Pays de l'Adour, 11 rue Morane Saulnier, 65000, Tarbes, France.
Eur J Appl Physiol. 2017 Sep;117(9):1799-1806. doi: 10.1007/s00421-017-3676-z. Epub 2017 Jul 3.
To compare the effects of unilateral strength training by stimulated and voluntary contractions on muscle strength and monopedal postural control of the contralateral limb.
36 non-active healthy male subjects were recruited and split randomly into three groups. Two groups of 12 subjects took part in a strength-training program (3 sessions a week over 8 weeks) comprising 43 contractions of the quadriceps femoris of the ipsilateral limb (at 20% of the MVC). One group carried out voluntary contractions exclusively (VOL group), while the other group benefited exclusively from electro-induced contractions (NMES group). The other 12 subjects formed the control (CON) group. Assessments of MVC and monopedal postural control in static and dynamic postural tasks were performed with the ipsilateral (ISPI) and contralateral (CONTRA) limbs before (PRE) and after (POST) completion of the training program.
After the training program, the MVC of the IPSI and CONTRA limbs increased similarly for both experimental groups (VOL and NMES). There were no significant improvements of monopedal postural control for the IPSI or CONTRA limbs in either the VOL or NMES experimental group. No change was observed for the CON group over the protocol period.
The purposed training program with NMES vs VOL contractions induced strength gains but did not permit any improvement of contralateral monopedal postural control in healthy young subjects. This has potential for therapeutic application and allows clinicians to focus their training programs on dynamic and poly-articular exercises to improve the postural control in young subjects.
比较单侧力量训练通过刺激和自主收缩对肌肉力量和对侧肢体单足姿势控制的影响。
招募了 36 名非活跃的健康男性受试者，并随机分为三组。两组共 12 名受试者参加了一项力量训练计划（每周 3 次，共 8 周），包括 43 次同侧股四头肌收缩（占 MVC 的 20%）。一组仅进行自主收缩（VOL 组），而另一组仅受益于电诱导收缩（NMES 组）。其余 12 名受试者组成对照组（CON 组）。在完成训练计划前后（PRE 和 POST），使用同侧（ISPI）和对侧（CONTRA）肢体评估 MVC 和单足姿势控制在静态和动态姿势任务中的表现。
在训练计划后，两个实验组（VOL 和 NMES）的 ISPI 和 CONTRA 肢体的 MVC 均有相似的增加。在 VOL 或 NMES 实验组中，对侧单足姿势控制均未出现显著改善。CON 组在整个方案期间没有变化。
与 VOL 收缩相比，NMES 引起的训练计划可导致力量增加，但不能改善健康年轻受试者的对侧单足姿势控制。这对于治疗应用具有潜力，并允许临床医生将他们的训练计划集中在动态和多关节练习上，以提高年轻受试者的姿势控制。
