Lim Hyoungwon
Department of Physical Therapy, Dankook University, Cheonan 31116, Korea.
Healthcare (Basel). 2021 Nov 26;9(12):1636. doi: 10.3390/healthcare9121636.
Selective serratus anterior (SA) strengthening without compensatory movement of the shoulder stabilizers is essential for shoulder stability and functional movement without causing shoulder injury and dysfunction. The purpose of this study was to compare electromyographic (EMG) activity between the SA, upper trapezius (UT), lower trapezius (LT), and pectoralis major (PM) during the knee push-up plus (KPUP) and modified Vojta's 3-point support (MV3PS) exercises. Scapular stabilizer muscle activity (UT, LT, SA, and PM) was investigated during the KPUP and MV3PS exercises in 40 healthy adults (19 males, 21 females) using surface EMG. Muscle activity of the SA was significantly higher during the MV3PS exercise than during the KPUP ( < 0.05). However, muscle activity in the PM was significantly lower during the MV3PS exercise ( < 0.05). In addition, the LT and UT showed less muscle activity during the MV3PS exercise, although the difference was not statistically significant ( > 0.05). These findings suggest that the MV3PS exercise better activates the SA than KPUP.
在不引起肩部损伤和功能障碍的情况下，选择性加强前锯肌（SA）且不伴有肩部稳定肌的代偿性运动，对于肩部稳定性和功能性运动至关重要。本研究的目的是比较在跪姿俯卧撑加（KPUP）和改良伏伊塔三点支撑（MV3PS）练习期间，前锯肌、上斜方肌（UT）、下斜方肌（LT）和胸大肌（PM）的肌电图（EMG）活动。使用表面肌电图对40名健康成年人（19名男性，21名女性）在KPUP和MV3PS练习期间的肩胛稳定肌活动（UT、LT、SA和PM）进行了研究。在MV3PS练习期间，SA的肌肉活动显著高于KPUP期间（<0.05）。然而，在MV3PS练习期间，PM的肌肉活动显著较低（<0.05）。此外，在MV3PS练习期间，LT和UT的肌肉活动较少，尽管差异无统计学意义（>0.05）。这些发现表明，与KPUP相比，MV3PS练习能更好地激活SA。
