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首页> 外文期刊>Journal of strength and conditioning research >Kettlebell swing, snatch, and bottoms-up carry: back and hip muscle activation, motion, and low back loads.
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Kettlebell swing, snatch, and bottoms-up carry: back and hip muscle activation, motion, and low back loads.

机译：壶铃摆动，抓举和自下而上的运动：背部和臀部肌肉的激活，运动和下背部负荷。

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The intent of this study was to quantify spine loading during different kettlebell swings and carries. No previously published studies of tissue loads during kettlebell exercises could be found. Given the popularity of kettlebells, this study was designed to provide an insight into the resulting joint loads. Seven male subjects participated in this investigation. In addition, a single case study of the kettlebell swing was performed on an accomplished kettlebell master. Electromyography, ground reaction forces (GRFs), and 3D kinematic data were recorded during exercises using a 16-kg kettlebell. These variables were input into an anatomically detailed biomechanical model that used normalized muscle activation; GRF; and spine, hip, and knee motion to calculate spine compression and shear loads. It was found that kettlebell swings create a hip-hinge squat pattern characterized by rapid muscle activation-relaxation cycles of substantial magnitudes (～50% of a maximal voluntary contraction [MVC] for the low back extensors and 80% MVC for the gluteal muscles with a 16-kg kettlebell) resulting in about 3,200 N of low back compression. Abdominal muscular pulses together with the muscle bracing associated with carries create kettlebell-specific training opportunities. Some unique loading patterns discovered during the kettlebell swing included the posterior shear of the L4 vertebra on L5, which is opposite in polarity to a traditional lift. Thus, quantitative analysis provides an insight into why many individuals credit kettlebell swings with restoring and enhancing back health and function, although a few find that they irritate tissues.
机译：这项研究的目的是量化不同壶铃摆动和携带过程中的脊柱负荷。以前没有发现壶铃运动期间组织负荷的研究。考虑到壶铃的流行，本研究旨在提供对由此产生的关节负荷的见解。七名男性受试者参加了这项调查。此外，还对一个成熟的壶铃大师进行了壶铃摆动的单个案例研究。在锻炼过程中使用16公斤的壶铃记录了肌电图，地面反作用力（GRF）和3D运动数据。这些变量被输入到解剖学上详细的生物力学模型，该模型使用归一化的肌肉激活。 GRF;以及脊柱，臀部和膝盖的运动来计算脊柱的压缩和剪切负荷。发现壶铃摆动会产生臀部铰接式下蹲模式，其特征是快速的肌肉激活-放松循环，幅度很大（腰背伸肌最大自愿收缩[MVC]的50％，臀肌的80％MVC）。 16公斤的壶铃）导致约3200 N的低背压缩。腹部肌肉搏动以及随身携带的肌肉支撑装置可提供壶铃特定的训练机会。壶铃摆动过程中发现的一些独特载荷模式包括L5上L4椎骨的后切变，其与传统举升的极性相反。因此，定量分析可以洞悉为什么许多人相信壶铃摆动会恢复并增强背部健康和功能，尽管有些人发现他们会刺激组织。

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