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施亚萍 《武汉体育学院学报》1997,(4)
本文对体操运动员膝关节滑膜损伤的机理作了理论上的分析，并提出了避损伤的预防和修复损伤的诊治方法，实践证明，诊治方法效果良好。 相似文献
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Kahlee Adams Adam Kiefer Derek Panchuk Adam Hunter Ryan MacPherson Wayne Spratford 《Journal of sports sciences》2020,38(5):486-493
ABSTRACTBiomechanical analysis has typically been confined to a laboratory setting. While attempts have been made to take laboratory testing into the field, this study was designed to assess whether augmented reality (AR) could be used to bring the field into the laboratory. This study aimed to measure knee load in volleyball players through a jump task incorporating AR while maintaining the perception-action couplings by replicating the visual features of a volleyball court. Twelve male volleyball athletes completed four tasks: drop landing, hop jump, spike jump, and spike jump while wearing AR smart glasses. Biomechanical variables included patellar tendon force, knee moment and kinematics of the ankle, knee, hip, pelvis and thorax. The drop landing showed differences in patellar tendon force and knee moment when compared to the other conditions. The hop jump did not present differences in kinetics when compared to the spike conditions, instead of displaying the greatest kinematic differences. As a measure of patellar tendon loading the AR condition showed a close approximation to the spike jump, with no differences present when comparing landing forces and mechanics. Thus, AR may be used in a clinical assessment to better replicate information from the competitive environment. 相似文献
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目的:通过膝关节功能康复保健操功能锻炼对膝部骨性关节炎患者的临床评价,探讨膝关节功能康复保健操的疗效和作用,旨在建立膝骨关节炎功能锻炼方法。方法:采用随机对照的设计方法,将符合纳入标准的60例膝骨关节炎患者随机分成两组。锻炼组30例,对经基础治疗的患者予以康复保健操锻炼治疗;对照组30例,只给予基础治疗。连续两周后,观察比较两组患者康复前、后膝关节症状改善以及功能恢复的情况,并对两组患者进行计分评定比较。结果:两组在改善膝关节活动度、减轻关节疼痛、缓解晨僵、局部压痛等方面进行了比较,差异具有显著性(P<0.05),锻炼组效果明显优于对照组。结论:膝关节功能康复保健操对改善膝部骨性关节炎生活质量有显著的疗效。 相似文献
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旨在观察半月板损伤后治疗中，实施什么措施可提高康复速度。设置针对性的康复运动处方，与对照组比较。结果发现实验组各功能指标都优于对照组。实施针对性运动处方，能加速半月板损伤后的恢复速度。 相似文献
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目的 探讨运动性膝关节损伤的MRI表现特点.方法 对30例体育运动后出现膝关节损伤症状的患者进行1.5T磁共振扫描,部分患者行膝关节镜检查,并对所得的MR图像与关节镜结果进行回顾性分析.结果 30例运动性膝关节损伤患者中,骨挫伤者18例,MRI表现为股骨髁、胫骨髁、髌骨于T2W1序列上见斑片样高信号影;半月板损伤者25例,其中Ⅰ-Ⅱ度损伤18例,Ⅲ度损伤7例;膝关节韧带损伤者20例;关节软骨面毛糙、变薄者5例;膝关节腔及周围滑膜囊内见积液征象者20例.结论 高场磁共振成像能准确地对运动性膝关节损伤做出诊断. 相似文献
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MICHAEL E. FELTNER DANIEL J. FRASCHETTI ROBERT J. CRISP 《Journal of sports sciences》2013,31(6):449-466
Twenty-five volleyball players (14 males, 11 females) were videotaped (60Hz) performing countermovement vertical jumps with and without an arm swing. Ground reaction force and video-based coordinate data were collected simultaneously. The resultant joint force and torque at the hip, knee, ankle and shoulder for two trials per subject per condition were computed and normalized. Average kinematic, resultant joint force and torque data were compared using repeated-measures analysis of variance. Larger values were recorded for the vertical velocity of the centre of mass at take-off in the jumps with (mean 2.75, s=0.3m.s-1) versus without (mean 2.44, s= 0.23m.s-1) an arm swing. The jumps with no arm swing produced larger torques at the hip during the first third of the propulsive phase (from zero to maximum vertical velocity of the centre of mass). During the final two-thirds of the propulsive phase, the arm swing augmented hip extensor torques by slowing the rate of trunk extension and placing the hip extensor muscles in slower concentric conditions that favoured the generation of larger forces and resultant joint torques. During the first two-thirds ofthe propulsive phase, knee extensor torque increased by 28% in the jumps with an arm swing, but maintained a relatively constant magnitude in the jumps with no arm swing. 相似文献
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Nili Steinberg Shay Tenenbaum Gordon Waddington Roger Adams Gal Zakin Aviva Zeev 《Journal of sports sciences》2020,38(7):719-730
ABSTRACTAiming to evaluate the prevalence of unilateral/bilateral patellofemoral pain (PFP) among young dancers, and to investigate whether different factors are associated with PFP in young dancers, 132 dancers aged 12–14 years were assessed for PFP. Anthropometric parameters, proprioception ability, dynamic postural balance (DPB), and muscle strength were measured. PFP was found in 64.1% of the dancers. No significant differences in the prevalence of dancers with no, unilateral, or bilateral PFP at different ages were found. Significant age effects were found for anthropometric and developmental measurements, and for intensity of training. PFP effect was found for DPB asymmetry, ankle proprioception, and leg-length %height. A higher hip abductor/adductor ratio was associated with PFP in 14-year-old dancers. Binomial logistic regression showed that increased number of hours per day (h/day) and decreased number of hours per week (h/week), low proprioception scores, greater leg length as %height, and more anterior DPB asymmetry were significant predictors of PFP. In conclusion: unilateral/bilateral PFP is common among young dancers. Body morphology, reduced ankle proprioception ability, DPB asymmetry, and increased h/day of practice are associated with PFP. Dance teachers should start monitoring the impact of training and implement injury modification/prevention strategies when their students are at a young age. 相似文献
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用模糊相关的运算方法 ,对单杠后倒挂膝上技术动作的运动生物力学因素进行分析 ,为优化单杠后倒挂膝上的技术教学提供了理论依据。 相似文献