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논문 기본 정보

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학술저널
저자정보
Kim, You Lim (Department of Physical Therapy, The Graduate School, Sahmyook University) Yoo, Jaehyun (Department of Physical Therapy, College of Health and Welfare, Sahmyook University) Kang, Sinwoo (Department of Physical Therapy, College of Health and Welfare, Sahmyook University) Kim, Taerim (Department of Physical Therapy, College of Health and Welfare, Sahmyook University) Kim, Namyeol (Department of Physical Therapy, College of Health and Welfare, Sahmyook University) Hong, Sojeong (Department of Physical Therapy, College of Health and Welfare, Sahmyook University) Hwang, Wonjeong (Department of Physical Therapy, The Graduate School, Sahmyook University) Lee, Suk Min (Department of Physical Therapy, College of Health and Welfare, Sahmyook University)
저널정보
물리치료재활과학회 Physical therapy rehabilitation science Physical therapy rehabilitation science 제5권 제1호
발행연도
2016.1
수록면
15 - 21 (7page)

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Objective: The purpose of this study was to see the changes in muscle activity of the upper limb in persons using a smartphone. Design: Cross-sectional study. Methods: An experiment was conducted to target 15 right-handed university students. Experiments were carried out for students using cell phones for more than a year. In this study, experiments were carried out with one-handed and both handed operation of smartphone use in a sitting position, the same parameters with smartphone use in a standing position. The experiments were carried out by having the subjects write a text message in Korean on the smartphone for 3 minutes repeated 3 times with a rest period of 10 seconds given between each 3 minute period. Electromyography (EMG) was used to record the muscle activity of the upper trapezius (UT), extensor carpi radialis (ECR), and abductor pollicis (AP) during phone operation. Results: The muscle activity of the AP and ECR were significantly higher during single handed compared to double handed in both sitting and standing position (p<0.05). The muscle activity of the ECR was significantly higher in standing position compared to sitting position with double handed use of the smartphone (p<0.05). UT muscle activity of the right has been activated more than twice compared to the left UT in a sitting position (p<0.05). And UT muscle activity on the right has been activated more than five times compared to the left in a standing position (p<0.05). Conclusions: Using smartphone with double hand is useful for the prevention of musculoskeletal disorders.

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