Graduate Program in Rehabilitation Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
Graduate Program in Rehabilitation Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil; Department of Physical Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
J Bodyw Mov Ther. 2024 Jul;39:79-86. doi: 10.1016/j.jbmt.2024.02.001. Epub 2024 Feb 23.
Strengthening the hip and trunk muscles may decrease foot pronation in upright standing due to expected increases in hip passive torque and lower-limb external rotation. However, considering the increased pronation caused by a more varus foot-ankle alignment, subjects with more varus may experience smaller or no postural changes after strengthening.
To investigate the effects of hip and trunk muscle strengthening on lower-limb posture during upright standing and hip passive torque of women with more and less varus alignment.
This nonrandomized controlled experimental study included 50 young, able-bodied women. The intervention group (n = 25) performed hip and trunk muscle strengthening exercises, and the control group (n = 25) maintained their usual activities. Each group was split into two subgroups: those with more and less varus alignment. Hip, shank, and rearfoot-ankle posture and hip passive external rotation torque were evaluated. Mixed analyses of variance and preplanned contrasts were used to assess prepost changes and between-group differences (α = 0.05).
The less-varus subgroup of the intervention group had a reduced rearfoot eversion posture (P = 0.02). No significant changes were observed in the less-varus subgroup of the control group (P = 0.31). There were no significant differences in posture between the control and intervention groups when varus was not considered (P ≥ 0.06). The intervention group had increased hip passive torque (P = 0.001) compared to the control group, independent of varus alignment.
Despite the increases in hip passive torque, the rearfoot eversion posture was reduced only in women with a less-varus alignment. Having more foot-ankle varus may prevent eversion reductions.
通过增加髋关节被动扭矩和下肢外旋，加强臀部和躯干肌肉可能会减少直立位时的足内翻。然而，考虑到更内翻的足踝对线会增加内翻，因此更多内翻的受试者在加强后可能会经历较小或没有姿势变化。
研究髋关节和躯干肌肉强化对不同内翻程度女性直立位时下肢姿势和髋关节被动扭矩的影响。
这是一项非随机对照的实验研究，纳入了 50 名年轻、健康的女性。干预组（n=25）进行了髋关节和躯干肌肉强化练习，对照组（n=25）保持了他们的日常活动。每个组分为两个亚组：内翻程度更大和更小的亚组。评估了髋关节、小腿和后足-踝关节姿势以及髋关节被动外旋扭矩。采用混合方差分析和预设对比来评估前后变化和组间差异（α=0.05）。
干预组内翻程度较小的亚组后足外翻姿势减小（P=0.02）。对照组内翻程度较小的亚组没有观察到明显变化（P=0.31）。当不考虑内翻时，对照组和干预组之间的姿势没有显著差异（P≥0.06）。与对照组相比，干预组髋关节被动扭矩增加（P=0.001），与内翻程度无关。
尽管髋关节被动扭矩增加，但只有内翻程度较小的女性后足外翻姿势才会减小。足部-踝关节内翻程度越大，可能会阻止外翻减少。
