• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of athletic training >Quadriceps and hamstrings coactivation during common therapeutic exercises
【24h】

Quadriceps and hamstrings coactivation during common therapeutic exercises

机译：常见的治疗运动中股四头肌和腿筋共激活

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Context: Anterior tibial shear force and knee valgus moment increase anterior cruciate ligament (ACL) loading. Muscle coactivation of the quadriceps and hamstrings influences anterior tibial shear force and knee valgus moment, thus potentially influencing ACL loading and injury risk. Therefore, identifying exercises that facilitate balanced activation of the quadriceps and hamstrings might be beneficial in ACL injury rehabilitation and prevention. Objective: To quantify and compare quadriceps with hamstrings coactivation electromyographic (EMG) ratios during commonly used closed kinetic chain exercises. Design: Cross-sectional study. Setting: Research laboratory. Patients or Other Participants: Twenty-seven healthy, physically active volunteers (12 men, 15 women; age = 22.1 ± 3.1 years, height = 171.4 ± 10 cm, mass = 72.4 ± 16.7 kg). Intervention(s): Participants completed 9 separate closed chain therapeutic exercises in a randomized order. Main Outcome Measure(s): Surface electromyography quantified the activity level of the vastus medialis (VM), vastus lateralis (VL), medial hamstrings (MH), and biceps femoris (BF) muscles. The quadriceps-to-hamstrings (Q:H) coactivation ratio was computed as the sum of average quadriceps (VM, VL) EMG amplitude divided by the sum of average hamstrings (MH, BF) EMG amplitude for each trial. We used repeated-measures analyses of variance to compare Q:H ratios and individual muscle contributions across exercises (a = .05), then used post hoc Tukey analyses. Results: We observed a main effect for exercise (F3,79=22.6, P < .001). The post hoc Tukey analyses revealed smaller Q:H ratios during the single-limb dead lift (2.87 ± 1.77) than the single-limb squat (5.52 ± 2.89) exercise. The largest Q:H ratios were observed during the transverse-lunge (7.78 ± 5.51, P < .001), lateral-lunge (9.30 ± 5.53, P < .001), and forward-lunge (9.70 ± 5.90, P < .001) exercises. Conclusions: The most balanced (smallest) coactivation ratios were observed during the single-limb dead-lift, lateral-hop, transverse-hop, and lateral band-walk exercises. These exercises potentially could facilitate balanced activation in ACL rehabilitation and injury-prevention programs. They also could be used in postinjury rehabilitation programs in a safe and progressive manner.
机译：背景：胫骨前剪切力和膝外翻力矩增加前交叉韧带（ACL）的负荷。股四头肌和腿筋的肌肉共激活会影响胫骨前剪切力和膝外翻力矩，从而潜在地影响ACL负荷和受伤风险。因此，确定有助于平衡锻炼股四头肌和绳肌的运动可能对ACL损伤的康复和预防有益。目的：量化和比较股四头肌与腿筋共激活肌电图（EMG）比率在常用的闭合动力学链练习中。设计：横断面研究。地点：研究实验室。患者或其他参与者：27位健康，身体活跃的志愿者（12名男性，15名女性;年龄= 22.1±3.1岁，身高= 171.4±10 cm，体重= 72.4±16.7 kg）。干预措施：参与者按随机顺序完成9个单独的闭环治疗性练习。主要观察指标：表面肌电图定量分析了内侧股肌（VM），外侧股肌（VL），内侧绳肌（MH）和股二头肌（BF）的活动水平。股四头肌与腿筋（Q：H）共激活比率的计算方法是：平均四头肌（VM，VL）EMG幅度的总和除以每个试验的平均腿筋（MH，BF）EMG幅度的总和。我们使用方差的重复测量分析来比较运动中的Q：H比率和各个肌肉的贡献（a = .05），然后使用事后Tukey分析。结果：我们观察到锻炼的主要效果（F3,79 = 22.6，P <.001）。 Tukey事后分析显示，单肢深蹲运动（2.87±1.77）期间的Q：H比率比单肢深蹲（5.52±2.89）锻炼小。在横弯（7.78±5.51，P <.001），横弯（9.30±5.53，P <.001）和前弯（9.70±5.90，P <。 001）练习。结论：在单臂硬拉，侧跳，横跳和侧向带走运动中观察到最平衡（最小）的共激活率。这些练习可能会促进ACL康复和伤害预防计划中的平衡激活。它们也可以安全，逐步地用于伤后康复计划。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号