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1.
女跆拳道运动员膝关节运动损伤情况调查与剖析   总被引:5,自引:0,他引:5  
对集大体育学院35名跆拳道女运动员膝关节运动损伤进行调查,膝关节运动损伤发生率很高,人均1.31次,多数发生在对抗性训练和比赛中,局部负荷过重和训练水平低是致伤的主要因素。据女子膝关节的解剖生理特点,合理安排训练;正确掌握技术动作;加强膝关节周围肌肉、韧带特别是腘绳肌力量和伸展性锻炼;增强运动员自我保护意识。是避免损伤的有效手段。  相似文献
2.
前交叉韧带重建术后的康复训练   总被引:1,自引:0,他引:1  
对前交叉韧带重建术后康复训练的文献进行分析研究,了解该领域的发展趋势。应用计算机检索Medline和Cnki1989—2006年间关于前交叉韧带相关文献。研究表明:股四头肌和胭绳肌肌力训练对膝关节功能恢复具有重要的作用,闭合运动链训练适合于康复训练早期,开放运动链训练适合于康复训练晚期;前交叉韧带损伤后,其本体感觉也受到破坏,而术后本体感觉促进训练对膝关节功能的完善至关重要;康复训练方案变得越来越激进,但激进的康复训练也有不利的一面,采用胭绳肌腱和异体肌腱重建前交叉韧带的术后康复训练应更趋于保守。  相似文献
3.
评价膝关节前交叉韧带损伤后屈伸肌肉力量变化和腘绳肌生理状态变化的特征,以指导前交叉韧带重建术前和术后的康复治疗与训练.结果表明,前交叉韧带损伤后膝关节肌肉功能状态水平下降,在一定程度上影响运动中膝关节的稳定性,韧带重建术前和术后应注重加强膝关节肌肉力量和屈膝肌反应速度的康复训练,以减少术后康复训练中对重建韧带的负荷.  相似文献
4.
目的:确定大学生男、女足球运动员在急停起跳和侧切动作中下肢动作的运动学和动力学特点和性别差异,确定有无足球训练对急停起跳和侧切动作中的下肢运动学和动力学的影响.研究方法:对定期参加足球训练的大学生和无训练背景的普通大学生完成急停起跳和侧切动作时的下肢运动学和动力学特征进行采集与分析.结果与结论:多个与AC负荷有关的生物力学指标在性别间、动作间和群体间存在差异.女子足球运动员完成侧切和急停起跳动作时的膝关节屈角较小,足底压力中心更靠近脚尖.足球运动员在完成侧切跑时受到了更大的地面反作用力和膝关节力矩影响.结果说明,不良的落地技术是使女性运动员ACL损伤高发的原因,而足球运动员所受外力较大可能是其ACL损伤率高于非运动员群体的主要原因.  相似文献
5.
膝关节前交叉韧带是膝关节内重要的韧带组织,对维持膝关节的稳定有重要的作用。膝关节前交叉韧带的损伤是运动中常见而严重的运动损伤,如果处理不当,将极大的影响患者以后的运动能力,并对患者的日常生活和工作产生影响。各国对于前交叉韧带损伤都很重视,随着现代技术在前交叉韧带损伤的诊断、治疗和康复中的应用,诊断率和治愈率已经大大提高。本文就近年来的国内外有关文献资料作一归纳综述。  相似文献
6.
运用文献资料法、观察法、逻辑分析法,对江苏省女子手球运动员前十字韧带的损伤情况进行分析和研究,结果发现:前十字韧带的损伤与运动员在比赛中的速度、起跳高度、运动方向及关节承担身体重量有关。建议在训练中尽可能地增加膝关节活动范围和承受重量,在比赛中应避免膝关节侧向移动范围过大和急速旋转膝关节。  相似文献
7.
We investigated the effects of high intensity, intermittent exercise (HIIP) and anticipation on trunk, pelvic and lower limb biomechanics during a crossover cutting manoeuvre. Twenty-eight male, varsity athletes performed crossover cutting manoeuvres in anticipated and unanticipated conditions pre- and post-HIIP. Kinematic and kinetic variables were captured using a motion analysis system. Statistical parametric mapping (repeated-measures ANOVA) was used to identify differences in biomechanical patterns. Results demonstrated that both unanticipation and fatigue (HIIP) altered the biomechanics of the crossover cutting manoeuvre, whereas no interactions effects were observed. Unanticipation resulted in less trunk and pelvic side flexion in the direction of cut (d = 0.70 – 0.79). This led to increased hip abductor and external rotator moments and increased knee extensor and valgus moments with small effects (d = 0.24–0.42), potentially increasing ACL strain. The HIIP resulted in trivial to small effects only with a decrease in internal knee rotator and extensor moment and decreased knee power absorption (d = 0.35), reducing potential ACL strain. The effect of trunk and hip control exercises in unanticipated conditions on the crossover cutting manoeuvre should be investigated with a view to refining ACL injury prevention programmes.  相似文献
8.
The effectiveness of vertical drop jumps (VDJs) to screen for non-contact ACL injuries is unclear. This may be contributed to by discrete point analysis, which does not evaluate patterns of movement. Also, limited research exists on the second landing of VDJs, potential lower limb performance asymmetries and the effect of fatigue. Statistical parametric mapping investigated the main effects of landing, limb dominance and a high intensity, intermittent exercise protocol (HIIP) on VDJ biomechanics. Twenty-two male athletes (21.9 ± 1.1 years, 180.5 ± 5.5 cm, 79.4 ± 7.8 kg) performed VDJs pre- and post-HIIP. Repeated measures ANOVA identified pattern differences during the eccentric phases of the first and second landings bilaterally. The first landing displayed greater (internal) knee flexor (η2 = 0.165), external rotator (η2 = 0.113) and valgus (η2 = 0.126) moments and greater hip (η2 = 0.062) and knee (η2 = 0.080) flexion. The dominant limb generated greater knee flexor (η2 = 0.062), external rotator (η2 = 0.110) and valgus (η2 = 0.065) moments. The HIIP only had one effect, increased thoracic flexion relative to the pelvis (η2 = 0.088). Finally, the dominant limb demonstrated greater knee extensor moments during the second landing (η2 = 0.100). ACL injury risk factors were present in both landings of VDJs with the dominant limb at potentially greater injury risk. Therefore, VDJ screenings should analyse both landings bilaterally.  相似文献
9.
Limb dominance theory suggests that females tend to be more one-leg dominant and exhibit greater kinematic and kinetic leg asymmetries than their male counterparts, contributing to the increased risk of anterior cruciate ligament injury among female athletes. Thus, the purpose of this study was to examine the influences of sex and limb dominance on lower extremity joint mechanics during unilateral land-and-cut manoeuvres. Twenty-one women and 21 men completed land-and-cut manoeuvres on their dominant limb as well as their nondominant limb. Three-dimensional kinematics and kinetics were calculated bilaterally for the entire stance phase of the manoeuvre. Women performed land-and-cut manoeuvres with altered hip motions and loads as well as greater knee abduction at touchdown compared to men. Dominant limb land-and-cut manoeuvres where characterised by decreased hip flexion at touchdown as well as decreased hip flexion and adduction range of motion compared to nondominant land-and-cuts regardless of sex. The observed sex differences are consistent with previous research regarding mechanisms underlying the sex disparity in anterior cruciate ligament injury rates. However, observed differences regarding limb dominances appear somewhat arbitrary and did not suggest that the dominant or nondominant limb would be at increased risk of anterior cruciate ligament injury.  相似文献
10.
It is commonly believed that a torn ACL or a damaged meniscus may be associated with altered knee joint movements. The purpose of this study was to measure the tibiofemoral kinematics of ACL deficiency with concomitant meniscus deficiency. Unilateral knees of 28 ACL deficient participants were studied while ascending stairs. Among these patients, 6 had isolated ACL injuries (group I), 8 had combined ACL and medial meniscus injuries (group II), 8 had combined ACL and lateral meniscus injuries (group III) and 6 had combined ACL and medial-lateral meniscus injuries (group IV). Both knees were then scanned during a stair climb activity using single fluoroscopic image system. Knee kinematics were measured at 0°, 5°, 10°, 15°, 30° and 60° of flexion during ascending stairs. At 0°, 15° and 30° flexion of the knee, the tibia rotated externally by 13.9 ± 6.1°,13.8 ± 9.5° and 15.9 ± 9.8° in Group I. Group II and III exhibited decreased external rotation from 60° to full extension. Statistical differences were found in 0°, 15°and 30° of flexion for the 2 groups compared with Group I. In general, the tibia showed anterior translation with respect to the femur during ascending stairs. It was further determined that Group III had larger anterior translation compared with Group IV at 0° and 5° of flexion (−6.9 ± 1.7 mm vs. 6.2 ± 11.3 mm, P = 0.041; −9.0 ± 1.8 mm vs. 8.1 ± 13.4 mm, P = 0.044). During ascending stairs the ACL deficient knee with different deficiencies in the meniscus will show significantly different kinematics compared with that of uninjured contralateral knee. Considering the varying effect of meniscus injuries on knee joint kinematics, future studies should concentrate on specific treatment of patients with combined ACL and meniscus injuries to protect the joint from abnormal kinematics and subsequent postoperative degeneration.  相似文献
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