Effect of gender on trunk and pelvis control during lateral movements with perturbed landing     

Elmar Weltin  Albert Gollhofer  Guillaume Mornieux 《European Journal of Sport Science》2016,16(2):182-189

In lateral reactive movements, core stability may influence knee and hip joint kinematics and kinetics. Insufficient core stabilisation is discussed as a major risk factor for anterior cruciate ligament (ACL) injuries. Due to the higher probability of ACL injuries in women, this study concentrates on how gender influences trunk, pelvis and leg kinematics during lateral reactive jumps (LRJs). Perturbations were investigated in 12 men and 12 women performing LRJs under three different landing conditions: a movable landing platform was programmed to slide, resist or counteract upon landing. Potential group effects on three-dimensional trunk, pelvic, hip and knee kinematics were analysed for initial contact (IC) and the time of peak pelvic medial tilt (PPT). Regardless of landing conditions, the joint excursions in the entire lower limb joints were gender-specific. Women exhibited higher trunk left axial rotation at PPT (women: 4.0 ± 7.5°, men: ?3.1 ± 8.2°; p = 0.011) and higher hip external rotation at both IC and PPT (p < 0.01). But women demonstrated higher knee abduction compared to men. Men demonstrated more medial pelvic tilt at IC and especially PPT (men: –5.8 ± 4.9°, women: 0.3 ± 6.3°; p = 0.015). Strategies for maintaining trunk, pelvis and lower limb alignment during lateral reactive movements were gender-specific; the trunk and hip rotations displayed by the women were associated with the higher knee abduction amplitudes and therefore might reflect a movement strategy which is associated with higher injury risk. However, training interventions are needed to fully understand how gender-specific core stability strategies are related to performance and knee injury.  相似文献   

The Dutch language anterior cruciate ligament return to sport after injury scale (ACL-RSI) – validity and reliability     

Anton J. Slagers  Inge H. F. Reininga  Inge van den Akker-Scheek 《Journal of sports sciences》2017,35(4):393-401

The ACL-Return to Sport after Injury scale (ACL-RSI) measures athletes’ emotions, confidence in performance, and risk appraisal in relation to return to sport after ACL reconstruction. Aim of this study was to study the validity and reliability of the Dutch version of the ACL-RSI (ACL-RSI (NL)).

Total 150 patients, who were 3–16 months postoperative, completed the ACL-RSI(NL) and 5 other questionnaires regarding psychological readiness to return to sports, knee-specific physical functioning, kinesiophobia, and health-specific locus of control. Construct validity of the ACL-RSI(NL) was determined with factor analysis and by exploring 10 hypotheses regarding correlations between ACL-RSI(NL) and the other questionnaires. For test–retest reliability, 107 patients (5–16 months postoperative) completed the ACL-RSI(NL) again 2 weeks after the first administration. Cronbach’s alpha, Intraclass Correlation Coefficient (ICC), SEM, and SDC, were calculated. Bland–Altman analysis was conducted to assess bias between test and retest.

Nine hypotheses (90%) were confirmed, indicating good construct validity. The ACL-RSI(NL) showed good internal consistency (Cronbach’s alpha 0.94) and test–retest reliability (ICC 0.93). SEM was 5.5 and SDC was 15. A significant bias of 3.2 points between test and retest was found.

Therefore, the ACL-RSI(NL) can be used to investigate psychological factors relevant to returning to sport after ACL reconstruction.  相似文献   

Effects of changing speed on knee and ankle joint load during walking and running     

Ana Cristina de David  Felipe Pivetta Carpes  Darren Stefanyshyn 《Journal of sports sciences》2015,33(4):391-397

Joint moments can be used as an indicator of joint loading and have potential application for sports performance and injury prevention. The effects of changing walking and running speeds on joint moments for the different planes of motion still are debatable. Here, we compared knee and ankle moments during walking and running at different speeds. Data were collected from 11 recreational male runners to determine knee and ankle joint moments during different conditions. Conditions include walking at a comfortable speed (self-selected pacing), fast walking (fastest speed possible), slow running (speed corresponding to 30% slower than running) and running (at 4 m · s^?1 ± 10%). A different joint moment pattern was observed between walking and running. We observed a general increase in joint load for sagittal and frontal planes as speed increased, while the effects of speed were not clear in the transverse plane moments. Although differences tend to be more pronounced when gait changed from walking to running, the peak moments, in general, increased when speed increased from comfortable walking to fast walking and from slow running to running mainly in the sagittal and frontal planes. Knee flexion moment was higher in walking than in running due to larger knee extension. Results suggest caution when recommending walking over running in an attempt to reduce knee joint loading. The different effects of speed increments during walking and running should be considered with regard to the prevention of injuries and for rehabilitation purposes.  相似文献   

高校羽毛球运动员膝关节损伤的调查分析     

周芸佩 《体育科技文献通报》2014,(11):128-130

通过文献资料法,问卷调查法,数理统计法等对江苏省18届运动会高校组羽毛球运动员膝关节损伤现状及原因进行深入调查分析,为同类研究提供理论依据。  相似文献   

Anticipatory postural adjustments during cutting manoeuvres in football and their consequences for knee injury risk     

Guillaume Mornieux  Dominic Gehring  Patrick Fürst  Albert Gollhofer 《Journal of sports sciences》2014,32(13):1255-1262

Abstract

Anticipatory postural adjustments (APAs), i.e. preparatory positioning of the head, the trunk and the foot, are essential to initiate cutting manoeuvres during football games. The aim of the present study was to determine how APA strategies during cutting manoeuvres are influenced by a reduction of the time available to prepare the movement.

Thirteen football players performed different cutting tasks, with directions of cutting either known prior to the task or indicated by a light signal occurring 850, 600 or 500 ms before ground contact.

With less time available to prepare the cutting manoeuvre, the head was less orientated towards the cutting direction (P = 0.033) and the trunk was even more rotated in the opposite direction (P = 0.002), while the foot placement was not significantly influenced. Moreover, the induced higher lateral trunk flexion correlated with the increased knee abduction moment (r = 0.41; P = 0.009).

Increasing lateral trunk flexion is the main strategy used to successfully perform a cutting manoeuvre when less time is available to prepare the movement. However, higher lateral trunk flexion was associated with an increased knee abduction moment and therefore an increased knee injury risk. Reducing lateral trunk flexion during cutting manoeuvres should be part of training programs seeking the optimisation of APAs.  相似文献   

运动性膝关节损伤的临床康复   总被引：3，自引：0，他引：3  

李静 《武汉体育学院学报》2004,38(5):67-68

针对膝关节不稳定性损伤的不同状态,对不同运动强度,不同运动开始时间在损伤康复研究中的价值进行比较研究,为运动性膝关节损伤的临床康复提供参考。  相似文献   

散打运动员膝关节损伤研究     

吴金荣  罗畅伟 《搏击·武术科学》2008,5(10)

文章采用文献资料法、问卷调查法、专家访谈法等方法,以广州体育学院散打队队员为研究对象,对武术散打运动中膝关节损伤及其防治的情况进行了研究,发现了导致膝关节损伤产生的原因、损伤的性质、训练年限与损伤的关系和诊断治疗以及预防措施等,并在此基础上提出合理、科学的防治膝关节损伤的方法和建议。以引起教练员和运动员对膝关节损伤及其防治情况的重视,从而减少其发病率,保证我国散打运动健康稳步发展。  相似文献   

壮瑶药酒涂擦合药包熨烫配合中医护理治疗膝骨关节炎的临床疗效评价研究     

王粤湘  农秀明  廖桂华  刘展秀  曾平 《大众科技》2016,(8):84-86

目的:观察壮瑶药酒涂擦合药包熨烫配合中医护理治疗膝骨关节炎的临床疗效。方法:将符合纳入标准的81例膝骨关节炎患者随机分为对照组40例和治疗组41例,治疗组在对照组治疗的基础上加用壮瑶药酒涂擦合药包熨烫治疗并予相应护理。15次为一疗程,治疗1疗程后评定疗效。以视觉模拟评分法观察治疗前后肿痛情况,评价止痛效果,采用国家疗效标准评价近期疗效,结果:治疗组症状改善和临床疗效较对照组显著,差异有显著性(P0.05)。结论:壮瑶药酒涂擦合药包熨烫配合中医护理治疗膝骨关节炎较单纯西药疗效显著。  相似文献   

从第65届美国运动医学年会看全身震动对健康促进研究的影响     

王明伟  吴香芝  李立 《北京体育大学学报》2018,41(8):77-83

摘要：依据2018年第65届美国运动学会（ACSM）学术年会、第9届“Exercise is Medicine（EIM）”世界大会内容,查阅相关文献资料,以EIM为基础,重点阐述2018年ACSM年会中5篇全身震动（WBV）交流论文及与其相关的WBV干预的研究现状。这些研究前沿和研究现状对进一步开展WBV健身效果的研究带来新启示和思路。研究认为,WBV能改善老年人姿势平衡、降低跌倒风险、增加身体功能和体成分、增进心血管系统和骨关节炎的神经肌肉表现等。WBV对健康促进效果显著。同时,也应该注意到,长期WBV干预对心血管系统健康和神经肌肉系统改善的影响仍不清楚,WBV干预与膝关节屈膝不同角度干预的积极效果间的相关性应进一步综合评定。需要深入开展涵盖下肢肌力、身体功能和体成分、姿势平衡和膝关节屈膝不同程度在内的系统的WBV评估体系构建,藉此使WBV健身手段获得正确评估,为WBV广泛开展提供更多科学依据。  相似文献   

对巩立姣伦敦奥运会最好成绩的 推铅球滑步技术的运动学分析          下载免费PDF全文

崔冬雪 《河北体育学院学报》2018,32(3):80-86

采用Dartfish解析法,选取角度、高度、距离等指标,对巩立姣在2012年伦敦奥运会上最好成绩2022 m的推铅球滑步技术进行运动学分析,并与新西兰选手ADAMS Valerie进行比较,指出：巩立姣在团身动作阶段,右腿屈膝程度小,呈现躯干下潜、臀高肩低的姿态;在背向滑步右脚离地瞬间,左腿摆动过高,重心向投掷方向移动不充分、躯干起伏较大;在右脚着地瞬间,滑步距离较短、左侧肢体的回扣松散,超越器械幅度小;在左脚着地瞬间,左脚落于投掷中线上,两脚间左右距离过小、前后距离过大,超越器械不充分。针对以上问题,提出改善建议,为其今后技术训练和水平提升提供参考。  相似文献