Novice lifters exhibit a more kyphotic lifting posture than experienced lifters in straight-leg lifting.
Novice lifters exhibit a more kyphotic lifting posture than experienced lifters in straight-leg lifting.
复制标题
在直腿举重中，新手举重者比经验丰富的举重者表现出更后凸的举重姿势。
DOI：
10.1016/j.jbiomech.2015.05.022
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发表时间：
2015
影响因子：
2.4
通讯作者：
Wilson,SE
中科院分区：
文献类型：
--
作者：
Riley,AE;Craig,TD;Sharma,NK;Billinger,SA;Wilson,SE
由于躯干屈曲和重复举重是腰痛和损伤的已知风险因素，因此研究可能减少重复举重过程中损伤的举重技术非常重要。通过将腰椎姿势标准化为受试者的运动范围（ROM），作为躯干屈曲的函数，本研究检查了受试者在动态提升任务期间何时接近其运动范围极限。对于这项研究，假设经验丰富的举重运动员将保持一个更中立的腰椎角度相对于他们的活动范围，而新手举重运动员将接近他们的腰椎ROM在伸展阶段的直腿升降机的限制。结果显示，这两组的举重模式在统计学上有显著差异，支持这一假设。新手组在上举循环的屈曲（腰椎角度ROM的74%）和伸展（腰椎角度ROM的86%）阶段都保持了更明显的后凸腰椎角度，而经验丰富的组在整个上举循环中保持了更中性的曲率（屈曲时腰椎角度ROM的37%，伸展时腰椎角度ROM的48%）。通过接近他们的运动范围的极限，新手举重运动员可能会有更大的受伤风险，因为他们会在脊柱的软组织上施加更大的负荷。未来的研究应该检查是否训练受试者在举重过程中采取更中立的姿势确实可以降低受伤的风险。
As torso flexion and repetitive lifting are known risk factors for low back pain and injury, it is important to investigate lifting techniques that might reduce injury during repetitive lifting. By normalizing lumbar posture to a subject's range of motion (ROM), as a function of torso flexion, this research examined when subjects approached their range of motion limits during dynamic lifting tasks. For this study, it was hypothesized that experienced lifters would maintain a more neutral lumbar angle relative to their range of motion, while novice lifters would approach the limits of their lumbar ROM during the extension phase of a straight-leg lift. The results show a statistically significant difference in lifting patterns for these two groups supporting this hypothesis. The novice group maintained a much more kyphotic lumbar angle for both the flexion (74% of the lumbar angle ROM) and extension phases (86% of the lumbar angle ROM) of the lifting cycle, while the experienced group retained a more neutral curvature throughout the entire lifting cycle (37% of lumbar angle ROM in flexion and 48% of lumbar angle ROM in extension). By approaching the limits of their range of motion, the novice lifters could be at greater risk of injury by placing greater loads on the supporting soft tissues of the spine. Future research should examine whether training subjects to assume more neutral postures during lifting could indeed lower injury risks.