腰椎下部椎间盘变形在物体举起过程中测量在体内使用内置的骨针
Stefan Schmid1, Inès Kramers-de Quervain2, Walter Baumgartner3
1Bern University of Applied Sciences, School of Health Professions, Division of Physiotherapy, Spinal Movement Biomechanics Group, Bern, Switzerland; University of Basel, Faculty of Medicine, Basel, Switzerland.
Journal of biomechanics
|October 2, 2024
概括
举起物体的技巧,如腰和腰,会导致腰椎显著变形. 目前推广中性脊柱的指导方针可能无法充分保护腰部疼痛,因为这两种方法都会诱导盘和压缩.
科学领域:
- 生物力学 生物力学
- 人体工程学就是人体工程学.
- 脊柱健康 脊柱健康
背景情况:
- 传统的举重建议将腰和腰技术分为类别,将腰举重与中性脊柱联系起来,而腰举重与脊柱屈曲和损伤联系在一起.
- 然而,科学证据将脊柱曲与腰部疼痛联系在一起是不确定的,质疑这些不同的分类的有效性.
研究的目的:
- 为了调查和比较腰椎下部椎间盘变形在腰和腰举重技术.
- 挑战传统的信念,说式举重通过保持中立的脊柱来保护背部.
主要方法:
- 在五名健康的男性中,利用内置骨钉 (Kirschner线) 插入L3,L4和L5脊椎过程.
- 采用磁性和光学跟踪系统,在各种运动过程中收集生物机械数据,包括腰和俯卧.
- 测量了椎间盘入,前环纤维体压缩,后环纤维体扩张和杆臂长度.
主要成果:
- 与式提升相比,式提升通常会导致多达90%的磁盘结,在L4/L5 (p=0.042) 观察到显著差异.
- 在俯卧式提升过程中,前侧纤维环经历了10-40%的更多压缩;在后侧纤维环扩张方面没有发现显著差异.
- 杆手臂在俯卧式提升过程中大约长出35%的时间,而不是坐式提升.
结论:
- 式和俯卧式举重技术都会诱导显著的腰椎间盘变形,挑战了式举重始终保持中性脊柱的观念.
- 在参与者中观察到的变异性表明,普遍的,适合所有人的举重指南可能不会在预防腰部疼痛方面普遍有效.
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