원문정보
초록
한국어
Increased use of smartphones can cause abnormal alignment of head and neck, resulting in forward head posture (FHP). This can lead to change in the structures and function of the cervical vertebrae. The purpose of this study was to determine the impact on deep neck flexor muscles, proprioception, vestibular function, and balance of subjects with induced FHP by using smartphone. Twenty-two healthy persons were randomly divided into two groups. The FHP group maintained a craniovertebral angle (CVA) of <49° and a normal head posture group maintained a CVA of >50° watching the smartphone for 40 min. We measured the area of the longus colli and longus capitis muscles, cervi-cal joint position sense, Romberg test, subjective visual vertical test, and subjective visual horizontal test. There was no significant differ-ence in the deep neck flexor muscles, vestibular function, and static balance between the groups. However, there was a significant differ-ence in the cervical proprioception (P<0.05). Proprioception may be considered to be the most influential factor in induced FHP by smart-phone viewing.
목차
INTRODUCTION
MATERIALS AND METHODS
Participants
Craniovertebral angle
Ultrasonography
Cervical joint position sense
Subjective visual vertical test and subjective visual horizontal test
Romberg test with Wii balance board
Statistical analysis
RESULTS
Changes in deep neck flexor muscles area
Changes in proprioception
Changes in vestibular function
Changes in static balance
DISCUSSION
CONFLICT OF INTEREST
REFERENCES