斜方肌特定区域在改良 Kendall 手法肌测试中的肌肉激活。

Muscle Activation in Specific Regions of the Trapezius During Modified Kendall Manual Muscle Tests.

机构信息

Applied Health Sciences, University of Manitoba, Winnipeg, MB, Canada.

Faculty of Kinesiology and Recreation Management, University of Manitoba, Winnipeg, MB, Canada.

出版信息

J Athl Train. 2021 Oct 1;56(10):1078-1085. doi: 10.4085/545-20.

DOI:10.4085/545-20

PMID:33626133

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8530421/

Abstract

CONTEXT

Manual muscle tests (MMTs) are often used when assessing shoulder injuries. For the trapezius, individual MMTs are used to selectively test the upper trapezius region (UTR), middle trapezius region (MTR), and lower trapezius region (LTR). The MMTs for each region are assumed to preferentially recruit the corresponding muscle fibers and produce a maximal contraction; however, whether this is true is unknown.

OBJECTIVE

To determine if maximal voluntary isometric contractions (MVICs) for the upper trapezius (UT-MVIC), middle trapezius (MT-MVIC), and lower trapezius (LT-MVIC), adapted from the Kendall MMTs, recruited the corresponding trapezius regions.

DESIGN

Crossover study.

SETTING

Laboratory.

PATIENTS OR OTHER PARTICIPANTS

A total of young, healthy individuals (10 men, 9 women, 1 not listed; age = 23.9 ± 1.7 years, height = 171.4 ± 9.6 cm, mass = 75.7 ± 11.6 kg).

INTERVENTION(S): Participants performed 3 repetitions of each MVIC. High-density surface electromyography measurements were collected from the UTR, MTR, and LTR.

MAIN OUTCOME MEASURE(S): Root mean square (excitation) of the UTR, MTR, and LTR.

RESULTS

We observed an increase in UTR excitation during the LT-MVIC compared with the UT-MVIC (P = .016) and MT-MVIC (P < .001). The MTR excitation increased during the MT-MVIC (P = .001) and the LT-MVIC (P < .001) compared with the UT-MVIC. We also noted an increase in MTR excitation during the LT-MVIC compared with the MT-MVIC (P < .001). The LTR excitation increased during the MT-MVIC and LT-MVIC (P values < .001) compared with the UT-MVIC.

CONCLUSIONS

The UT-MVIC and MT-MVIC did not necessarily recruit the corresponding trapezius regions more than the other MVICs did. Rather, the LT-MVIC appeared to produce the greatest excitation of all trapezius regions. Additional research is needed; however, clinicians should be aware that maximal contractions may not always recruit the desired muscle region.

摘要

背景

在评估肩部损伤时，常使用手动肌肉测试（MMTs）。对于斜方肌，可以使用单独的 MMT 选择性地测试上斜方肌区（UTR）、中斜方肌区（MTR）和下斜方肌区（LTR）。假设每个区域的 MMT 优先募集相应的肌纤维并产生最大收缩；然而，这是否属实尚不清楚。

目的

确定从 Kendall MMT 改编的上斜方肌（UT-MVIC）、中斜方肌（MT-MVIC）和下斜方肌（LT-MVIC）的最大自主等长收缩（MVIC）是否募集了相应的斜方肌区域。

设计

交叉研究。

设置

实验室。

患者或其他参与者

共纳入年轻健康个体（10 名男性，9 名女性，1 名未列出；年龄=23.9±1.7 岁，身高=171.4±9.6cm，体重=75.7±11.6kg）。

干预

参与者进行了 3 次 MVIC 重复。从 UTR、MTR 和 LTR 采集高密度表面肌电图测量值。

主要观察指标

UTR、MTR 和 LTR 的均方根（兴奋）。

结果

与 UT-MVIC 和 MT-MVIC 相比，LT-MVIC 期间 UTR 兴奋增加（P=0.016 和 P < 0.001）。与 UT-MVIC 相比，MTR 兴奋在 MT-MVIC（P=0.001）和 LT-MVIC（P < 0.001）期间增加。我们还注意到 LT-MVIC 期间 MTR 兴奋较 MT-MVIC 增加（P < 0.001）。与 UT-MVIC 相比，MT-MVIC 和 LT-MVIC 期间 LTR 兴奋增加（P 值<0.001）。