高、低帮篮球鞋对落地时踝关节稳定及肌肉功能影响的研究     

侯建甫  魏春生  傅维杰  魏书涛  何俊良  刘宇 《体育科学》2011,31(5)

目的:探讨高、低帮篮球鞋对落地时踝关节内翻的运动学、地面反作用力及下肢主要肌群活动的影响,尝试理解高、低帮篮球鞋与踝关节落地稳定之间的关系;方法:13名受试者分别穿着高、低帮篮球鞋,手抓杠悬于空中,从40 cm高度分别垂直下落至内翻15°、内翻30°、内翻25°伴随跖屈10°(25°+10°)、内翻25°伴随跖屈20°(25°+20°)的倾斜面上,分析其踝关节运动学、地面反作用力及小腿主要外翻和背屈肌群(胫骨前肌、腓骨长肌和腓骨短肌)的肌电活动;结果:高、低帮鞋对内翻角度的变化、最大内翻角速度和地面垂直及水平冲击力没有显著影响;在15°倾斜面时,穿着高帮鞋出现预激活时间比低帮鞋晚(P<0.05),同时,在15°和25°+20°下腓骨长肌和腓骨短肌落地前50 ms的平均振幅更小(P<0.05);结论:选取的高帮鞋对踝关节的运动学和冲击力的改变不显著,但却在一定程度上影响了周围肌肉的预激活,对限制踝关节活动起到了积极的作用.  相似文献   

我国速度滑冰优秀男子运动员膝、踝关节肌力特征的比较研究   总被引：6，自引：0，他引：6  

夏娇阳 《体育科学》2005,25(8):53-55,74

通过运用CYBEX NORM多关节等速测力及康复系统对我国男子500m国际级健将和国家级健将速度滑冰运动员下肢膝、踝关节肌力进行测试和分析。结果表明，两组运动员在部分膝、踝关节肌力特征上存在显著性差异，国际级健将运动员表现出较国家级健将运动员更合理的肌力特征。  相似文献   

投掷运动项目应注重踝关节力量训练     

刘素兰  李宝宅 《武汉体育学院学报》2003,37(4):80-81

以河北体院运动系投掷运动员的训练为样本，通过对运动员的踝关节力量的训练。对训练前后的技术和成绩进行比较。结果表明：由于运动员踝关节力量的提高，使之投掷技术和成绩都有了较大提高。  相似文献   

中国女子足球运动员踝关节损伤特征   总被引：1，自引：0，他引：1  

罗兴华  周同 《军事体育进修学院学报》2002,21(2):33-35,45

采用文献资料和调查访问法，对参加广西梧州冬训的七支女子足球队的145名运动员进行了踝关节损伤的调查与分析，结果显示：我国成年女足运动员的踝关节损伤率为33%。在踝关节损伤中，踝关节事韧带的损伤率为60.6%，且多发生在训练年限1～5年的运动员。损伤的原因主要是训练水平不足、局部负荷过重、技术动作不合理等。针对踝关节损伤的原因机理，提出康复和预防措施以供参考。  相似文献   

推拿加中国炙治踝关节扭伤疗效的探索     

张海芳 《浙江体育科学》2004,26(2):87-88

踝关节扭伤是临床常见病、多发病,一般多见于体育活动时的跌扑闪失,它影响患者工作(训练)、学习和日常生活.根据临床病例实况,采用针对性的推拿手法,以改善和调节患部;辅之通经活络,活血祛瘀,消肿止痛的中国炙(热敷)治疗,操作简便、见效快,经60例治疗实验,疗效显著.  相似文献   

重手法按压治疗急性腰扭伤     

吴长河 《湖北体育科技》1996,(1)

笔者５年内共收治急性腰扭伤患者５５例，均采用重手法按压治疗，效果良好。  相似文献   

在运动中踝关节损伤机制的分析     

黄玉宁 《大众科技》2014,(8):111-112

文章主要对踝关节损伤的原因,损伤机制进行分析,加强对踝关节损伤的预防,从而减少人们在运动中有效地避免踝关节的损伤,以达到预防作用。  相似文献   

体育运动中踝关节损伤的解剖学浅析     

卢向阳  续伟 《山西师大体育学院学报》1997,(1)

本文从解剖学角度分析引起踝关节损伤的原因及预防措施,以供应运动员、教练员和教师借鉴。  相似文献   

The effect of increasing external degrees of freedom on force production and neuromuscular stabilisation     

Kati Wuebbenhorst  Volker Zschorlich 《Journal of sports sciences》2013,31(14):1561-1569

Abstract

Evidence suggests that during interaction with different environmental dynamics the necessity to stabilise the involved joints leads to altered efficiency in force transmission to the surroundings and a specific orchestration of motor control strategies. However, little is known about the modalities of the changes associated with altered environmental dynamics. In 29 healthy participants, electromyographic (EMG) signals from four muscles of the right leg (M. peroneus longus, M. tibialis anterior, M. vastus medialis, M. gastrocnemius medialis) and three dimensions of force (Fx, Fy, Fz) were recorded. The participants were to exert force against an external object by performing a unilateral leg extension task with the task being influenced by either 0, 1 or 3 mechanical degrees of freedom. We hypothesised that the ankle stabilising muscles would increase their activities with increasing degrees of freedom (DoF), and that increasing external degrees of freedom results in decreased muscle force exerted during the movement task. The progressive change in the type of mechanical interaction from stable to unstable caused a loss of the ability to apply force in movement direction (Fz) which was accompanied by a reduction of Fy and Fx force dimensions. These reductions corresponded to maximum losses of 23% for Fz, 33% for Fx and 41% for Fy in the three degrees of freedom condition (all P < 0.001). Next, the individual muscles showed specific tuning effects, depending on the type of mechanical interaction. Our results suggest that the loss of the ability to exert force effectively against the external object is due to the neuromuscular stabilisation process of the involved joints. The change of the degrees of freedom conditions allowed for assessment of movement- or stabilisation-related adjustments of the motor system.  相似文献   

Kinematic and kinetic differences in the execution of vertical jumps between people with good and poor ankle joint dorsiflexion     

Georgios Papaiakovou 《Journal of sports sciences》2013,31(16):1789-1796

Abstract

The aim of the present study was to investigate the kinematic and kinetic differences in the execution of vertical jumps between individuals with good and poor ankle dorsiflexion. Fifteen physical education students were assigned to the flexible group (FG), while another 15 were assigned to the inflexible group (IFG). The two groups executed countermovement jumps (CMJ) and drop jumps from a 60 cm height (DJ60). For the CMJ, the FG jumped higher (32.0 ± 4.0 cm vs. 30.2 ± 4.9 cm, P = 0.27) and used a greater range of motion in all leg joints. The IFG jumpers raised their heels off the ground and had a greater horizontal distance between the centre of mass of the trunk and the centre of the hip joint (L_CMh 25.6 ± 3.4 cm vs. 30.9 ± 4.3 cm, P < 0.001). In the DJ60 the FG jumped higher (22.4 ± 5.9 cm vs. 19.5 ± 4.6 cm, P = 0.14) with a greater vertical shift of the body centre of mass (BCM) (S = 0.45 ± 0.11 cm vs. 0.36 ± 0.05 cm, P < 0.01) and better joint coordination. The IFG jumpers changed the position of their trunk and heels depending on the jump type. Trainers should reconsider the technical issues of vertical jumps according to the flexibility of the ankle joint.  相似文献