The Effects of Posture on Neck Flexion Angle While Using a Smartphone according to Duration

이상용; Lee,Dae-Hee (이대희); Han Seul-ki (한슬기)

The Effects of Posture on Neck Flexion Angle While Using a Smartphone according to Duration

Journal of the Korean Society of Physical Medicine
Abbr : J Korean Soc Phys Med
2016, 11(3), pp.35-39
Publisher : The Korean Society of Physical Medicine
Research Area : Medicine and Pharmacy > Physical Therapy > Other physical therapy

이상용 ¹, Lee,Dae-Hee ¹, Han Seul-ki ¹

¹유원(U1)대학교

Accredited

ABSTRACT

PURPOSE: The purpose of this study was to examine changes in the neck flexion angle according to posture while using a smartphone and the duration of smartphone usage. METHODS: The subjects in this study were 16 healthy young students in their 20s. The subjects wore a cervical range of motion instrument. They were instructed to use a smartphone while standing, sitting on a chair, and sitting on the floor. In all postures, they could use the smartphone and use their arms freely while keeping their back connected to the wall or the back of the chair. When sitting on the floor, they assumed a cross-legged position. The neck flexion angle was measured at zero, three, six, and nine minutes for each posture. RESULTS: Neck flexion is affected by the posture while using a smartphone (p<.05). Neck flexion in the standing position is larger than that in the sitting on the floor position. Neck flexion was affected by smartphone usage duration (p<.05). In general, as usage time increases, the neck flexion angle increases as well. CONCLUSION: This study suggests that using smartphone in the standing position and for a short period of time is a method to reduce the neck flexion angle.

KEYWORDS

CROM, Neck flexion angle, Posture, Smartphone

Citation status

* References for papers published after 2023 are currently being built.

[journal] Carney DR / 2010 / Power posing: brief nonverbal displays affect neuroendocrine levels and risk tolerance / Psychol Sci 21(10) : 1363~1368

[journal] Kim HJ / 2015 / The relationship between smartphone use and subjective musculoskeletal symptoms and university students / J Phys Ther Sci 27(3) : 575~579

[journal] Kim MS / 2015 / Influence of neck pain on cervical movement in the sagittal plane during smartphone use / J Phys Ther Sci 27(1) : 15~17

[journal] 고경 / 2013 / The Study of Muscle Fatigue and Risks of Musculoskeletal System Disorders from Text Inputting on a Smartphone / 대한인간공학회지 / 대한인간공학회 32(3) : 273~278

[journal] Lee H / 2006 / Development and psychometric testing of Korean language versions of 4 neck pain and disability questionnaires / Spine 31(6) : 1841~1845

[journal] Lee J / 2014 / The comparison of cervical repositioning errors according to smartphone addiction grades / J Phys Ther Sci 26(4) : 595~598

[journal] Lee M / 2015 / The effects of smartphone use on upper extremity muscle activity and pain threshold / J Phys Ther 27(6) : 1743~1745

[thesis] 이용숙 / 2013 / 휴대폰 사용중독이 청소년 건강에 미치는 영향 연구 : 경부통증을 중심으로 / 석사 / 광운대학교 환경대학원

[journal] 박선욱 / 2015 / The Reliability and Validity of Hip Range of Motion Measurement using a phone Operative Patient / 대한물리의학회지 / 대한물리의학회 10(2) : 1~7

[journal] Straker LM / 2008 / A comparison of posture and muscle activity during tablet computer, desktop computer and paper use by young children / Ergonomics 51(4) : 540~555

[thesis] Um SH / 2013 / An empirical study on relationship between physical symptoms and smartphone usage / Master / Inha University

[journal] Yoon JO / 2015 / The effects of gait with use of smartphone on repositioning error and curvature of the lumbar spine / J Phys Ther Sci 27(8) : 2507~2508

[journal] Young JG / 2012 / Touch-screen tablet user configurations and case-supported tilt affect head and neck flexion angles / Work 41(1) : 81~91

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Journal of the Korean Society of Physical Medicine 2023 KCI Impact Factor : 0.45