|
KMID : 0608320130200010010
|
|
Physical Therapy Korea
2013 Volume.20 No. 1 p.10 ~ p.17
|
|
|
Influence of the Duration of Smartphone Usage on Flexion Angles of the Cervical and Lumbar Spine and on Reposition Error in the Cervical Spine
|
|
Kim Yang-Gon
Kang Min-Hyeok
Kim Ji-Won
Jang Jun-Hyeok
Oh Jae-Seop
|
|
|
Abstract
|
|
|
|
The purpose of this study was to assess the influence of the duration of smartphone usage on cervical and lumbar spine flexion angles and reposition error in the cervical spine. The study included 18 healthy smartphone users (7 males and 11 females). We measured the kinematics of the upper and lower cervical and lumbar spine flexion angles and the reposition error of the upper and lower cervical spine after 3 s and 300 s smartphone use in sitting. A paired t-test was used to compare the effects of the duration of smartphone usage on the kinematics of cervical and lumbar spine flexion angles and reposition error. The flexion angles of the lower cervical and lumbar spine and the reposition error in the upper and lower cervical spine were significantly increased after 300 s smartphone of use (p<.05). However, the flexion angle of the upper cervical spine was not significantly different between the 3 s and 300 s smartphone of use (p>.05). These findings suggest that prolonged use of smartphones can induce changes in cervical and lumbar spine posture and proprioception in the cervical spine.
|
|
|
KEYWORD
|
|
|
Cervical spine, Kinematics, Lumbar spine, Reposition error, Smartphone
|
|
|
FullTexts / Linksout information
|
|
|
|
|
Listed journal information
|
|
|