按摩对腰腿痛患者的肌时值影响     

余其刚  李子煊  陈永清 《四川体育科学》2003,(3):12-12,19

本文随机测试了32例腰腿痛患者按摩前后的肌时值变化，发现受试患者患侧较健侧的时值均有不同程度的延长，但经按摩后患侧时值缩短。因此作者认为时值测量法也可作为衡量按摩作用的客观生理指标。  相似文献   

Effects of plyometric training on maximal-intensity exercise and endurance in male and female soccer players     

Rodrigo Ramírez-Campillo  Marcelo Vergara-Pedreros  Carlos Henríquez-Olguín  Cristian Martínez-Salazar  Cristian Alvarez  Fábio Yuzo Nakamura 《Journal of sports sciences》2016,34(8):687-693

In a randomised controlled trial design, effects of 6 weeks of plyometric training on maximal-intensity exercise and endurance performance were compared in male and female soccer players. Young (age 21.1 ± 2.7 years) players with similar training load and competitive background were assigned to training (women, n = 19; men, n = 21) and control (women, n = 19; men, n = 21) groups. Players were evaluated for lower- and upper-body maximal-intensity exercise, 30 m sprint, change of direction speed and endurance performance before and after 6 weeks of training. After intervention, the control groups did not change, whereas both training groups improved jumps (effect size (ES) = 0.35–1.76), throwing (ES = 0.62–0.78), sprint (ES = 0.86–1.44), change of direction speed (ES = 0.46–0.85) and endurance performance (ES = 0.42–0.62). There were no differences in performance improvements between the plyometric training groups. Both plyometric groups improved more in all performance tests than the controls. The results suggest that adaptations to plyometric training do not differ between men and women.  相似文献   

Ankle muscle strength influence on muscle activation during dynamic and static ankle training modalities     

Angel Gabriel Lucas-Cuevas  Jennifer Baltich  Hendrik Enders  Sandro Nigg  Benno Nigg 《Journal of sports sciences》2016,34(9):803-810

Muscle weakness is considered a risk factor for ankle injury. Balance training and barefoot running have been used in an attempt to strengthen the muscles crossing the ankle. It is expected that training tasks that successfully strengthen the ankle would elicit increased muscular activity. However, it is unknown how an individual's ankle strength will influence the muscle activity used during a given task. Twenty-six participants performed dynamic (shod, barefoot running) and static tasks (squat on ground, squat on ®Bosu Ball) believed to strengthen the muscles surrounding the ankle. Electromyographic signals of the tibialis anterior, peroneus longus, gastrocnemius lateralis (GL) and gastrocnemius medialis (GM) were recorded and analysed using a non-linearly scaled wavelet analysis. Participants were divided into a strong group and a weak group according to their isometric plantar-flexion torque. The weak group required more relative GL and GM muscle activity during each training task compared to the strong group. No difference was observed between shod and barefoot running. There was a significant effect of training task on muscle activation level for the weak group. Differences in ankle strength had a significant impact on muscle activation.  相似文献   

温度对蛙腓肠肌收缩的影响     

王艳 《四川职业技术学院学报》2006,16(4):116-117

研究不同的温度下蛙的肌肉收缩情况。结果表明,蛙腓肠肌肌肉收缩的最适温度是25℃,温度小于25℃时,肌肉收缩能力随温度升高而增强,温度大于25℃时,肌肉收缩能力随温度升高而减弱。  相似文献   

几种先天畸形胎儿的骨骼肌组织学观察与比较     

梅盛平  景玉萍  陈军芳  张明军  康照昌 《孝感职业技术学院学报》2007,10(3):96-98

目的:探讨先天畸形胎儿与正常胎儿骨骼肌的光镜结构差异,为畸形胎儿的骨骼肌发育研究提供形态学方面的资料。方法:用苏木精-伊红(HE)染色,通过光学显微镜观察畸形胎儿及正常胎儿的骨骼肌。结果:并(缺)指、胸腹联胎和兔唇畸形胎儿的骨骼肌光镜结构与正常胎儿的相比无明显差异;而无脑儿的骨骼肌光镜结构与正常胎儿的相比有明显差异。结论:无脑儿神经系统发育异常影响了其骨骼肌纤维的正常发育。  相似文献   

THE APPLICATION OF BIODEX TO FUNCTIONAL DIAGNOSIS AND REHABILITATION OF THIGH AND KNEE INJURIES     

Yang Jingyi  Lai Liuming 《北京体育大学学报》1996,(Z2)

Forty-two (male 28, female 14) athletes with quadriceps / hamstring strain, or knee injury were the subjects. The strength of knee extensor and nexor were measured on Bodex system before,during, and after rehabilitation. Peak Torque of 60°/sec concentric, 240°/sec concentric, and 60°/sec eccentric contrsction were taken and evaluated using the"Evaluation Scales", and Torque Curves were analysed. The results indicated: except Hamstring /Quadriceps Torque Ratio of 60°/sec concentric contraction of involved side much higher, and Involved/ Uninvolved Torque Ratio lower, the abnormal Torque Curve of quadriceps (60°/sec concentric) may be a good indicator of quadriceps strain, knee sprain, and chronic knee injury. Abnormal Torque Curve might also be used in selecting athletes. When the subjects took part in the rehabilitation program according to the Biodex reports, the results were satisfying.  相似文献   

踝关节跖屈、背屈肌群的生物力学研究进展与不足   总被引：1，自引：0，他引：1  

郭新明  王向东 《北京体育大学学报》2005,28(3):364-366

查阅了大量的资料基础上,从踝关节的解剖学特征、生物力学特征、肌肉工作形式和肌力测试手段,及对踝关节跖屈、背屈肌肉力量的研究等方面进行了论述,同时指出以往研究的不足.指出对于普通青年的踝关节的研究的重要性.  相似文献   

肌肉放松能力在青少年速度滑冰训练中的作用及提高途径探讨     

赵欣  邹金龙 《哈尔滨体育学院学报》2008,26(4)

速度滑冰技术是高度协调的周期性运动项目,需要运动员在滑跑过程动作高度自动化、肌肉协调放松以达到高度节能效果。因此,肌肉的协调放松能力对于提高青少年运动员的滑跑成绩具有重要作用。试图从肌肉放松的生理机制;运动员滑跑肌肉放松能力训练的主要途径等,运用人体科学理论及速度滑冰专项训练等理论,来探讨肌肉放松能力对提高青少年速度滑冰运动员成绩的影响,以期为速度滑冰青少年训练提供理论与实践的参考。  相似文献   

The relationship between mechanical stiffness and athletic performance markers in sub-elite footballers     

Judd T. Kalkhoven  Mark L. Watsford 《Journal of sports sciences》2018,36(9):1022-1029

This study investigated the relationship between several measures of lower-body stiffness and physical performance variables in 22 sub-elite male football players (mean ± SD; 21.9 ± 1.5 yr; 1.79 ± 0.06 m; 72.2 ± 7.2 kg). The participants were assessed for individual muscle stiffness of the Rectus Femoris (RF), Biceps Femoris (BF) and Medial Gastrocnemius (MG) muscles and vertical stiffness (Kvert) was also assessed assessed running acceleration, maximal sprint speed, agility, vertical jumping and muscular strength. Pearson’s correlations quantified the relationships and participants were also separated into relatively stiff (SG) and compliant groups (CG) for each variable. When ranked by Kvert the SG exhibited superior performance during sprinting, agility, jumping and strength (p ≤ 0.05) and when ranked by RF stiffness, SG exhibited superior sprint, agility and drop jump performance (p ≤ 0.05), while MG and BF stiffness were not related to performance. Higher stiffness appears to be beneficial to athletic performance for football players and therefore it may be beneficial for practitioners working with athletes that are required to perform dynamic activities to consider the contribution of stiffness to athletic performance.  相似文献   

振荡调整手法对青少年运动员腰椎小关节紊乱的疗效观察          下载免费PDF全文

吕强  焦毅超  张超  周楠  张树锋  杨慧平  梁文玉  田家乐 《体育科研》2018,(3):71-75，80

目的：观察振荡调整手法对青少年运动员腰椎小关节紊乱的影响。方法：96例诊断为“腰椎小关节紊乱”的青少年运动员随机分为手法组49例、对照组47例。手法组以松解手法配合振荡调整手法治疗,对照组以超短波电疗治疗,手法组每次10 min,对照组每次30 min,两组均每周治疗5次,测定全部受试者在治疗前、治疗2次、治疗3次、治疗5次,4个时间点的视觉模拟量表（VAS评分）、腰腹部肌张力值变化。结果：手法组治疗3次后VAS评分优于对照组,手法组治疗5次后,双侧竖脊肌及患侧腋中线/髂嵴与肋弓连线中点的肌张力值改善程度优于对照组;对侧腋中线/髂嵴与肋弓连线中点肌张力的改善程度无显著差异。结论：振荡调整手法能有效缓解青少年运动员腰椎小关节紊乱症状。  相似文献