论文部分内容阅读
目的:文章对太极拳腾空飞脚向内转体180°接提膝独立动作腾空和落地阶段支撑腿肌肉进行肌电测试,分析在该阶段中相关肌肉的力量特点以及发力特征。方法:文章以沈阳体育学院武术与民族传统体育专业太极拳院队的学生(5名)作为测试对象。采用ME6000表面肌电仪测试系统对沈阳体育学院太极拳院队的学生在完成动作过程中支撑腿有关肌肉的表面肌电(s EMG)进行测验,经过数据分析可以得出相关肌肉的积分肌电值(i EMG)、肌电平均开始时间、平均持续时间、贡献率大小。研究结果:(1)腾空阶段中股直肌、股内侧肌、腓肠肌内侧头、股外侧肌以及股二头肌被同时激活放电;持续时间较长的有股直肌和腓肠肌内侧头,股直肌为0.52s,在腾空阶段总时间中占85.00%。腓肠肌内侧头为0.46s,占总时间的75.47%;积分肌电值较大的有股直肌278.40±45.94μVs、腓肠肌内侧头211.00±30.56μVs;贡献率分别为25.20%、21.30%。(2)落地阶段中支撑腿6块肌肉同时被激活;持续时间较长的有股外侧肌3.41s,在落地阶段总时间中占100%;股内侧肌时间为3.25s,占91.97%;胫骨前肌为3.12s,占93.25%;股直肌为2.87s,占82.09%。胫骨前肌的积分肌电值最大为1975.40±379.29μVs,贡献率为28.70%;其次是股外侧肌1250.10±152.74μVs,贡献率为20.40%;股内侧肌1182.10±257.83μVs,贡献率为18.70%;股直肌1044.50±214.34μVs,贡献率为16.10%。结论:在腾空阶段中,股直肌和腓肠肌内侧头为该阶段的主要用力肌。落地阶段中大腿前群肌肉(股内侧肌、股外侧肌、股直肌)以及胫骨前肌是完成该阶段的主要用力肌。
OBJECTIVE: This paper reports the myoelectricity test of the supporting leg muscles of the tai chi kang flying astern 180 ° inwards and the independent movements of the leg during the landing stage, and analyzes the strength characteristics and the force characteristics of the relevant muscles at this stage. Methods: The article takes the students (5) from the Taijiquan Team of Wushu and Traditional Traditional Sports in Shenyang Institute of Physical Education as test objects. ME6000 surface electromyography test system was used to test the muscle EMG of supporting legs in the legs of the Taijiquan team of Shenyang Physical Education Institute during the completion of the exercise. After data analysis, the muscle EMG of the relevant muscles can be obtained. Value (EMG), EMG mean start time, average duration, contribution rate. Results: (1) In recumbent stage, rectus femoris muscle, medial femur muscle, medial gastrocnemius muscle, lateral femoral muscle and biceps femoris were activated and discharged at the same time. Rectus femoris muscle and gastrocnemius medial head were longer in duration, The muscle was 0.52s, accounting for 85.00% of the total time in the vacated phase. The gastrocnemius medial head was 0.46s, accounting for 75.47% of the total time; the integral myoelectric value greater rectus femoris 278.40 ± 45.94μVs, medial gastrocnemius head 211.00 ± 30.56μVs; the contribution rates were 25.20% and 21.30% respectively. (2) Six muscles of the supporting leg were activated at the same time in the landing stage. 3.41 s of the lateral femoral muscle with longer duration, 100% of the total time of landing stage, 3.25 seconds of the medial femoris muscle, accounting for 91.97% Anterior muscle was 3.12s, accounting for 93.25%; rectus femoris was 2.87s, accounting for 82.09%. The maximum myoelectric value of tibialis anterior muscle was 1975.40 ± 379.29μVs, the contribution rate was 28.70%; followed by the lateral femoral muscle 1250.10 ± 152.74μVs, the contribution rate was 20.40%; the medial femoral muscle 1182.10 ± 257.83μVs, the contribution rate was 18.70% ; Rectus femoris 1044.50 ± 214.34μVs, the contribution rate was 16.10%. CONCLUSIONS: In the emptying phase, the medial rectus of the rectus femoris and gastrocnemius are the major exertion muscles at this stage. In the landing stage, the anterior thigh muscles (medialis, lateral femoral, rectus femoris) and tibialis anterior muscle are the main muscular muscles at this stage.