Physical Therapy Korea (한국전문물리치료학회지)

Korean Research Society of Physical Therapy (한국전문물리치료학회)
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Effect of Craniocervical Flexion on Muscle Activities of Scapula Upward Rotator Muscle During Push-Up Plus Exercise in Subject With Winging of Scapula

  • Song, Si-Jeong (Dept. of Physical Therapy, The Graduate School, Yonsei University) ;
  • Lim, One-Bin (Dept. of Physical Therapy, The Graduate School, Yonsei University) ;
  • Kim, Jeong-Ah (Dept. of Physical Therapy, The Graduate School, Yonsei University) ;
  • Yong, Joon-Hyoung (Dept. of Physical Therapy, Hallym Polytechnic University) ;
  • Cynn, Heon-Seock (Dept. of Physical Therapy, College of Health Science, Yonsei University) ;
  • Yi, Chung-Hwi (Dept. of Physical Therapy, College of Health Science, Yonsei University)
  • Received : 2014.02.05
  • Accepted : 2014.03.06
  • Published : 2014.05.21
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Abstract

The aim of this study to investigate the effects of craniocervical flexion on muscle activities of scapular upward rotators during push-up plus exercise in subjects with winging scapula. Eighteen males with scapular winging were recruited, and each subject performed knee push-up plus and other exercises, in two conditions (craniocervical flexion vs. natural head positions). A surface electromyography (EMG) was used to measure upper trapezius (UT), serratus anterior (SA), and lower trapezius (LT) muscle activity. A paired t-test was used to determine the statistical significance between the different condition with/without applying of craniocervical flexion. UT EMG activity significantly decreased and SA EMG activity significantly increased during knee push-up plus involving the craniocervical flexion compared to the natural head position. However, no significant differences (p>.05) were found in the activity of the LT muscle. The UT/SA ratios with and without craniocervical flexion showed a significant difference (p<.05). These results showed that the knee push-up plus other exercises performed with craniocervical flexion could strengthen the serratus anterior muscle and minimize the activity of the UT muscle.

Keywords

References

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