Murphy Kasey M, Riemann Bryan L
Health Sciences and Kinesiology Georgia Southern University.
Int J Sports Phys Ther. 2025 Jan 1;20(1):30-39. doi: 10.26603/001c.127464. eCollection 2025.
Kettlebell (KB) swing exercises, whether performed using shoulder height (SHS) or overhead (OHS) swing variations in therapeutic or strength and conditioning settings, are posterior chain dominant exercises that require hip extension contributions when performed correctly.
PURPOSE/ HYPOTHESIS: The primary purpose of this study was to evaluate the effect of swing style (SHS, OHS) and KB mass on hip extension kinematics and kinetics in young adult females. A secondary purpose was to determine the effects of swing style and KB mass on the forces applied to the total body center of mass and KB. It was hypothesized that velocity, power, and work would be greater for the OHS compared to the SHS, as well as for the heavier compared to the lighter KB's.
Crossover study design.
Fifteen physically active females performed 15 swings under four conditions, SHS/12kg, SHS/16kg, OHS/12kg, and OHS/16kg, while three-dimensional dominant limb foot, shank, thigh, pelvis, and KB kinematic and ground reaction force (GRF) data were collected.
KB distance (95%CIDiff: 17.5-25.1 %BH), time (95%CIDiff: 0.067-0.023 s), and peak velocity (95%CIDiff: 0.56-0.74 m‧s-1) were significantly greater during the OHS (p<0.05). During OHS, significantly greater hip joint peak power (95%CIDiff: 1.6-4.1 W‧kg-1), work (95%CIDiff: 0.104-0.527), peak velocity (95%CIDiff: 7.6-40.5 °‧s-1) occurred compared to SHS, although the time and hip angular position of peak velocity and peak power were not statistically different between styles.
These results may influence choices of KB progressions, suggesting that one may first consider changes in KB mass prior to changing from the SHS style to the OHS style.
Level 3.
壶铃摆动练习，无论是在治疗环境还是力量与体能训练环境中，采用肩高摆动（SHS）还是过头摆动（OHS）变体进行，都是以身体后侧链为主导的练习，正确执行时需要髋关节伸展发力。
目的/假设：本研究的主要目的是评估摆动方式（SHS、OHS）和壶铃重量对年轻成年女性髋关节伸展运动学和动力学的影响。次要目的是确定摆动方式和壶铃重量对施加于全身质心和壶铃的力的影响。研究假设是，与SHS相比，OHS的速度、功率和功会更大，与较轻的壶铃相比，较重的壶铃也是如此。
交叉研究设计。
15名身体活跃的女性在四种条件下进行15次摆动，即SHS/12千克、SHS/16千克、OHS/12千克和OHS/16千克，同时收集三维主导肢体的足部、小腿、大腿、骨盆和壶铃的运动学数据以及地面反作用力（GRF）数据。
在OHS期间，壶铃移动距离（95%置信区间差异：17.5 - 25.1%身高）、时间（95%置信区间差异：0.067 - 0.023秒）和峰值速度（95%置信区间差异：0.56 - 0.74米·秒-1）显著更大（p<0.05）。在OHS期间，与SHS相比，髋关节峰值功率（95%置信区间差异：1.6 - 4.1瓦·千克-1）、功（95%置信区间差异：0.104 - 0.527）、峰值速度（95%置信区间差异：7.6 - 40.5°·秒-1）显著更大，尽管不同方式下峰值速度和峰值功率的时间以及髋关节角度位置在统计学上没有差异。
这些结果可能会影响壶铃训练进阶的选择，表明在从SHS方式转变为OHS方式之前，人们可能首先要考虑壶铃重量的变化。
3级。
