Acute and chronic effects of foam rolling vs eccentric exercise on ROM and force output of the plantar flexors     

Anne A. G. Aune  Chris Bishop  Anthony N. Turner  Kostas Papadopoulos  Sarah Budd  Mark Richardson 《Journal of sports sciences》2019,37(2):138-145

Foam rolling and eccentric exercise interventions have been demonstrated to improve range of motion (ROM). However, these two modalities have not been directly compared. Twenty-three academy soccer players (age: 18 ± 1; height: 1.74 ± 0.08 m; body mass: 69.3 ± 7.5 kg) were randomly allocated to either a foam rolling (FR) or eccentric exercise intervention designed to improve dorsiflexion ROM. Participants performed the intervention daily for a duration of four weeks. Measurements of dorsiflexion ROM, isometric plantar flexion torque and drop jump reactive strength index were taken at baseline (pre-intervention) and at three subsequent time-points (30-min post, 24-hours post and 4-weeks post). A significant time x group interaction effect was observed for dorsiflexion (P = 0.036), but not for torque or reactive strength index. For dorsiflexion, there was a significant increase in both acute (30-min; P < 0.001) and chronic (4-week; P < 0.001) ROM for the eccentric group, whilst FR exhibited only an acute improvement (P < 0.001). Eccentric training would appear a more efficacious modality than foam rolling for improving dorsiflexion ROM in elite academy soccer players.  相似文献   

半刚性非对称结构踝护具的内翻防护效果研究     

李宇豪 《河北体育学院学报》2020,34(5):71-77

目的：通过人体实验，对半刚性踝护具内翻防护效果进行研究，对该护具的内翻防护性能进行评价。方法：对14名男性志愿者进行平面与斜面着陆测试。平面着陆实验在不同高度（40 cm、50 cm、60 cm）及不同状态（裸足、弹性护具、半刚性护具）下进行，斜面着陆实验设置高度为40 cm，比较不同状态（裸足、弹性护具、半刚性护具）下的各项数据。利用Vicon三维动态捕捉系统收集运动学和地面反力数据。结果：平面着陆实验中，弹性护具组的最大内翻角度和最大外翻力矩最小（P＜005）。斜面着陆中，半刚性护具组的最大外翻力矩最大（P＜005），且最大内翻角度显著小于裸足（P＜005）。两种着陆中最大内翻角速度均没有显著差异（P＞005）。相较于平面着陆，斜面着陆下最大内翻角度、最大内翻角速度和最大外翻力矩均较大。结论：斜面着陆中，半刚性护具的最大内翻角度显著减小，表明其内翻防护性能较好；最大内翻角速度和最大外翻力矩能否作为护具内翻防护效果的评价参数有待进一步探讨。  相似文献   

论普通高校排球项目踝关节力量训练的重要性     

杨枝创 《体育科技》2012,33(3):47-49

通过分析排球运动的技术特征,踝关节的生理结构和运动特征以及踝关节运动损伤的机制及原因,阐述踝关节力量训练的重要性。  相似文献   

Control method for exoskeleton ankle with surface electromyography signals     

张震  王震  蒋佳芯  钱晋武 《上海大学学报(英文版)》2009,13(4):270-273

This paper is concerned with a control method for an exoskeleton ankle with electromyography (EMG) signals. The EMG signals of human ankle and the exoskeleton ankle are introduced. Then a control method is proposed to control the exoskeleton ankle using the EMG signals. The feed-forward neural network model applied here is composed of four layers and uses the back-propagation training algorithm. The output signals from neural network are processed by the wavelet transform. Finally the control orders generated from the output signals are passed to the motor controller and drive the exoskeleton to move. Through experiments, the equality of neural network prediction of ankle movement is evaluated by giving the correlation coefficient. It is shown from the experimental results that the proposed method can accurately control the movement of ankle joint. Project supported by the National High-Tech R&D Program (Grant No.2006AA04Z224), the Innovation Program of Shanghai Municipal Education Commission (Grant No.08ZZ48), and the Shanghai Leading Academic Discipline Project (Grant No.Y0102)  相似文献   

论大学生参加体育运动时踝关节损伤的原因及分析——以华东师范大学为调查个案     

陶志超  董卫亚 《和田师范专科学校学报》2008,28(3):177-178

科学全面的锻炼有助于身心的健康发展,大学生充满活力、渴望运动。因此体育课的课堂教学和课余体育活动不可避免的会造成踝关节运动损伤。针对这种情况,在对我校学生进行随机闯卷调查后,对调查结果进行整理、分析,发现我校很多同学在运动前都存在着准备活动不充分,运动中不注意自我保护的问题,导致在同学中越来越多的出现踝关节扭伤的情况。在了解这一情况后,笔者就踝关节损伤成因进行了探讨,并提出了相关的防范措施。  相似文献   

烯烃装置乙烯/丙烯压缩机GB501/601润滑油泵控制方式优化     

王群峰  王挺  张伟星  孙建海 《兰州石化职业技术学院学报》2015,(2):16-18

石油化工行业供电多来自外部电网供电,在外电网发生波动时易造成电压降低,导致生产装置非正常停车,给企业的安全生产和经济效益带来危害。为了防止外电网波动时装置机组停车,兰州石化公司电仪事业部对石化厂烯烃装置GB501丙烯制冷压缩机、GB601乙烯制冷压缩机润滑油泵控制方式采取了优化措施。此控制方式改造以来,运行稳定,在外电网多次发生波动时,该装置均未停车。  相似文献   

Test–retest reliability of a new device for assessing ankle joint threshold to detect passive movement in healthy adults     

Wei Sun  Qipeng Song  Bing Yu  Cui Zhang 《Journal of sports sciences》2015,33(16):1667-1674

This study aimed to evaluate the test–retest reliability of a new device for assessing ankle joint kinesthesia. This device could measure the passive motion threshold of four ankle joint movements, namely plantarflexion, dorsiflexion, inversion and eversion. A total of 21 healthy adults, including 13 males and 8 females, participated in the study. Each participant completed two sessions on two separate days with 1-week interval. The sessions were administered by the same experimenter in the same laboratory. At least 12 trials (three successful trials in each of the four directions) were performed in each session. The mean values in each direction were calculated and analysed. The ICC values of test–retest reliability ranged from 0.737 (dorsiflexion) to 0.935 (eversion), whereas the SEM values ranged from 0.21° (plantarflexion) to 0.52° (inversion). The Bland–Altman plots showed that the reliability of plantarflexion–dorsiflexion was better than that of inversion–eversion. The results evaluated the reliability of the new device as fair to excellent. The new device for assessing kinesthesia could be used to examine the ankle joint kinesthesia.  相似文献   

体育教学训练中踝关节韧带损伤及防治   总被引：2，自引：0，他引：2  

林仁鸿 《宁德师专学报(自然科学版)》2003,15(1):33-35

踝关节是运动的重要而又薄弱的部位,它的负荷量最大,跑跳是所有运动中不可缺少的动作.踝关节韧带损伤的突发性,难以预防,易使人在极短时间以内突然降低或失去运动能力.它在体育教学、训练时尤为多见.通过对踝关节韧带损伤机制的探讨,提出防治方法,以减少运动损伤的发生,保证教学训练正常进行,提高体育教学训练的质量.  相似文献   

运动性踝关节损伤的预防与治疗对策     

王玮 《考试周刊》2007,(9):107-109

运动性踝关节损伤作为学校体育中的常见伤病,越来越受到广大体育工作者的重视。从踝关节运动损伤的解剖结构及发生原因的角度上,分析研究治疗踝关节运动损伤的方法及其预防措施,以便更好地为体育教学、运动训练、运动卫生提供科学依据。  相似文献   

体育教学训练中下胫腓联合损伤的研究及防治     

刘彦林  张仲子  李宏伟 《吉林体育学院学报》2008,24(2):79-80

下胫腓联合是维持踝关节稳定的重要结构,其损伤是一种比较常见的运动损伤,容易造成踝关节慢性不稳定、长期疼痛和创伤性关节炎等后遗症。通过对其解剖结构、功能特点及损伤机制的探讨,总结诊治方法,提出预防措施,以减少运动损伤的发生,提高体育教学训练的质量。  相似文献