Gjesdal Beate Eltarvåg, Mæland S, Bogen B, Cumming K T, Nesse V C, Torberntsson S M R, Rygh C B
Department of Health and Function, Western Norway University of Applied Sciences, PO Box 7030, 5020, Bergen, Norway.
Department of Global Public Health and Primary Care, Faculty of Medicine, University of Bergen, Bergen, Norway.
BMC Sports Sci Med Rehabil. 2022 Jun 3;14(1):101. doi: 10.1186/s13102-022-00487-1.
Persons with cerebral palsy (CP) walk with reduced ankle plantar flexor power compared to typically developing. In this study, we investigated whether a ballistic strength-training programme targeting ankle plantar flexors could improve muscle strength, muscle architecture and walking function in adults with CP.
Eight adults (mildly affected CP) underwent eight weeks of ballistic strength training, with two sessions per week. Before and after the intervention preferred walking speed, ankle plantar flexion rate of force development (RFD), maximal voluntary contraction (MVC), muscle thickness, pennation angle and fascicle length were measured. Data are presented for individuals, as well as for groups. Group changes were analysed using the Wilcoxon signed-rank test.
Data were analysed for eight participants (five women, mean age 37.9 years; six GMFCS I and two GMFCS II). Two participants increased their walking speed, but there were no significant group changes. In terms of muscle strength, there were significant group changes for RFD at 100 ms and MVC. In the case of muscle architecture, there were no group changes.
In this study, we found that eight weeks of ballistic strength training improved ankle plantar flexor muscle strength but walking function and muscle architecture were unchanged. Larger studies will be needed to obtain conclusive evidence of the efficacy of this training method.
与正常发育的人相比，脑瘫（CP）患者行走时踝关节跖屈肌力量减弱。在本研究中，我们调查了针对踝关节跖屈肌的爆发性力量训练计划是否能改善成年CP患者的肌肉力量、肌肉结构和行走功能。
8名成年人（轻度脑瘫患者）接受了为期8周的爆发性力量训练，每周两次。在干预前后，测量了患者的首选步行速度、踝关节跖屈力发展速率（RFD）、最大自主收缩（MVC）、肌肉厚度、羽状角和肌束长度。数据以个体和组的形式呈现。使用Wilcoxon符号秩检验分析组间变化。
对8名参与者（5名女性，平均年龄37.9岁；6名GMFCS I级和2名GMFCS II级）的数据进行了分析。2名参与者提高了步行速度，但组间无显著变化。在肌肉力量方面，100毫秒时的RFD和MVC有显著的组间变化。在肌肉结构方面，组间无变化。
在本研究中，我们发现8周的爆发性力量训练改善了踝关节跖屈肌力量，但行走功能和肌肉结构未改变。需要更大规模的研究来获得这种训练方法有效性的确凿证据。
