Yoo Byungho, Park Hankyu, Heo Kwangjin, Lee Joongsook, Lee Jaeseok, Oh Taeyoung, Han Dongwook
Department of Physical Therapy, Graduate School of College of Medical and Life Science, Silla University, Republic of Korea.
J Phys Ther Sci. 2013 Oct;25(10):1335-8. doi: 10.1589/jpts.25.1335. Epub 2013 Nov 20.
[Purpose] The purpose of this study was to determine the effects of abdominal hollowing during lower-limb proprioceptive neuromuscular facilitation (PNF) training on the activation of contralateral muscles. [Subjects] Twenty male college students without symptoms or signs of muscular or nervous disease participated in this experiment after signing a consent form. [Methods] All the subjects were measured with electromyography (EMG) in a muscle activation test before and after abdominal hollowing. In the PNF program, the lower-limb pattern of PNF training, was maintained for 5 seconds, followed by a 2-minute break. This was repeated three times. The resting time between sets was 30 minutes. Surface EMG (Keypoint, Medtronic Inc., USA) was used for the measurements, and the highest value of three measurements was used in the analysis. [Result] The results revealed a significant change in the muscular activation of the opposite-side lower limbs. The muscular activations of the vastus lateralis, tibialis anterior, semitendinosus and gastrocnemius were increased significantly after the abdominal hollowing. [Conclusion] The findings suggest that abdominal hollowing in PNF pattern training can be effective at promoting muscular activation of the contralateral muscles. To promote muscular activation of the opposite side in lower-limb PNF pattern training, abdominal hollowing should be considered to improve the effect of PNF pattern training.
[目的]本研究旨在确定下肢本体感觉神经肌肉促进法（PNF）训练过程中收腹对侧方肌肉激活的影响。[受试者]20名无肌肉或神经疾病症状及体征的男性大学生在签署知情同意书后参与了本实验。[方法]所有受试者在收腹前后的肌肉激活测试中均进行了肌电图（EMG）测量。在PNF训练方案中，PNF训练的下肢模式保持5秒，随后休息2分钟。此过程重复3次。组间休息时间为30分钟。使用表面肌电图（美国美敦力公司的Keypoint）进行测量，并采用3次测量中的最高值进行分析。[结果]结果显示对侧下肢的肌肉激活有显著变化。收腹后，股外侧肌、胫骨前肌、半腱肌和腓肠肌的肌肉激活显著增加。[结论]研究结果表明，PNF模式训练中的收腹可有效促进对侧肌肉的激活。为在下肢PNF模式训练中促进对侧肌肉激活，应考虑采用收腹来提高PNF模式训练的效果。
