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背景:肩上举是一种常用练习,两种技术(头前式和头后式)可能会影响关节结构,因此需做客观分析。本研究旨在通过横向比较研究两种肩上举技术对肩部活动度和脊柱姿态的影响。方法:运用角度测量和三维生物力学测试方法研究33名受试者进行坐姿肩上举练习时肩关节的被动和主动活动幅度。结果:头前举在脊柱前凸的姿势下开始,头后举在脊柱后凸的姿势下开始。与头前举相比,头后举开始时的胸部伸展幅度更小。无论何种性别、何种肩上举技术,胸推均呈伸展状,且动作过程中的角度为12°-15°。两种肩上举技术在性别上表现出显著性差异。男性能保持正常的腰椎前凸,而女性则表现为腰椎后凸。结论:除头后式技术时男性肩关节产生外旋外,其余的肩关节动作幅度都在被动动作幅度之内。为避免可能出现的损伤,在头后式肩上举练习前应增加被动动作幅度。女性显现出更大的脊柱活动度,表明加强躯干力量有助于肩上举动作的完成。对具有正常躯干稳定性和理想肩关节动作幅度的受试者来说,无论头前式还是头后式,推举对于肩部和脊柱都最一种较为安全的练习。
Background: Shoulder lifting is a common practice. Both techniques (head and head) may affect the structure of the joint and require objective analysis. The aim of this study was to compare the effects of two shoulder-lift techniques on shoulder mobility and spine posture through a horizontal comparison. Methods: The angles and three-dimensional biomechanical test methods were used to study the passive and active range of the shoulder joint of 33 subjects during shoulder shoulder lift exercises. Results: The first lift in front of the lordosis position, the first lift in the kyphosis position began. Compared with the first lift, the chest lift at the beginning of the first lift is smaller. No matter what kind of sex, what kind of shoulder lift technique, chest push are stretched, and the action of the angle of 12 ° -15 °. Both techniques of shoulder lift show significant differences in gender. Male can maintain normal lumbar lordosis, while women showed lumbar kyphosis. Conclusion: In addition to head-headed technique when male shoulder rotator produce external rotation, the rest of the shoulder joint range of motion within the range of passive action. In order to avoid possible damage, increase the passive range of motion before lifting the head back shoulder. Women showed greater spine activity, indicating that strengthening the strength of the trunk helps to complete the shoulder movements. For subjects with normal body stability and ideal shoulder motion amplitude, the most safer exercise on the shoulders and spine, both front and back, is recommended.