Applied Kinesiology and Ergonomic Technology Laboratory, Department of Physical Therapy, The Graduate School, Yonsei University, Wonju-si, Republic of Korea.
Department of Physical Therapy, Baekseok University, Cheonan, Republic of Korea.
J Athl Train. 2021 Sep 1;56(9):945-951. doi: 10.4085/306-20.
Weakness of the gluteus medius and gluteus maximus is associated with a variety of musculoskeletal disorders. However, activation of synergistic muscles that are not targeted should be considered when prescribing side-lying hip-abduction (SHA) exercises. Log-rolling positions may affect hip-abductor activity during SHA.
To determine the effects of log-rolling positions on gluteus medius, gluteus maximus, and tensor fasciae latae activity during SHA in participants with gluteus medius weakness.
Controlled laboratory study.
University research laboratory.
Twenty-one participants with gluteus medius weakness.
INTERVENTION(S): Three types of SHA were performed: frontal-plane SHA in neutral position (SHA-neutral), frontal-plane SHA in anterior log-rolling position (SHA-anterior rolling), and frontal-plane SHA in posterior log-rolling position (SHA-posterior rolling).
MAIN OUTCOME MEASURE(S): Surface electromyography was used to measure hip-abductor activity. One-way repeated-measures analysis of variance was calculated to assess the statistical significance of the muscle activity.
The SHA-anterior rolling showed greater gluteus medius and gluteus maximus activation than the SHA-neutral (P = .003 and P < .001, respectively) and SHA-posterior rolling (P < .001 and P < .001, respectively). The SHA-neutral demonstrated greater gluteus medius and gluteus maximus activation than the SHA-posterior rolling (P < .001 and P = .001, respectively). The SHA-anterior rolling produced less tensor fasciae latae activation than the SHA-neutral (P < .001) and SHA-posterior rolling (P < .001). The SHA-neutral showed less tensor fasciae latae activation than the SHA-posterior rolling (P < .001).
The SHA-anterior rolling may be an effective exercise for increasing activation of the gluteus medius and gluteus maximus while decreasing activation of the tensor fasciae latae in participants with gluteus medius weakness.
臀中肌和臀大肌无力与多种肌肉骨骼疾病有关。然而，在开侧卧位髋关节外展（SHA）运动处方时，应考虑到协同肌的激活，这些协同肌并非是目标肌肉。滚木体位可能会影响 SHA 时的髋外展肌活动。
确定滚木体位对臀中肌薄弱患者 SHA 时臀中肌、臀大肌和阔筋膜张肌活动的影响。
对照实验室研究。
大学研究实验室。
21 名臀中肌无力患者。
进行了三种类型的 SHA：中立位额状面 SHA（SHA-中立）、前滚木位额状面 SHA（SHA-前滚）和后滚木位额状面 SHA（SHA-后滚）。
表面肌电图用于测量髋外展肌活动。采用单向重复测量方差分析评估肌肉活动的统计学意义。
与 SHA-中立（P =.003 和 P <.001）和 SHA-后滚（P <.001 和 P <.001）相比，SHA-前滚显示出更大的臀中肌和臀大肌激活。与 SHA-后滚（P <.001 和 P =.001）相比，SHA-中立显示出更大的臀中肌和臀大肌激活。与 SHA-中立（P <.001）和 SHA-后滚（P <.001）相比，SHA-前滚产生的阔筋膜张肌激活较少。与 SHA-后滚（P <.001）相比，SHA-中立显示出较少的阔筋膜张肌激活。
对于臀中肌薄弱的患者，SHA-前滚可能是一种有效的运动，可以增加臀中肌和臀大肌的激活，同时减少阔筋膜张肌的激活。
