Changes in the activity of the muscles surrounding the neck according to the angles of movement of the neck in adults in their 20s.
[Purpose] The aim of this study was to examine changes in the muscle activity around the neck according to the neck movement angle during neck flexion and extension. [Subjects and Methods] Activities of the sternocleidomastoid muscle (SCM), splenius capitis and splenius cervicis muscles, upper trapezius muscle, and middle trapezius muscle during flexion and extension were assessed in 24 college students. [Results] SCM muscle activation significantly increased at every angle during flexion and extension. The activities of the splenius capitis and splenius cervicis muscles increased significantly during flexion. The activity of the upper trapezius muscle also increased significantly. [Conclusion] The results highlight the need for individuals not to adopt a neck flexion posture for extended periods.
Department of Physical Therapy, Youngsan University, Republic of Korea.
Tae-Ho
TH
Lee
Department of Physical Therapy, Youngsan University, Republic of Korea.
Joon-Hyuk
JH
Lee
Department of Physical Therapy, Youngsan University, Republic of Korea.
Yun-Seob
YS
Lee
Department of Physical Therapy, College of Rehabilitation Science, Daegu University, Republic of Korea.
Myoung-Kwon
MK
Kim
Department of Physical Therapy, Uiduk University: 261 Donghaedaero, Gangdong Gyeongju, Gyeongbuk 780-713, Republic of Korea.
Seong-Gil
SG
Kim
Electromyography; Muscle activation; Neck muscles