Physical Therapy Rehabilitation Science

  • 제5권1호
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  • Pages.15-21
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  • 2016
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  • 2287-7576(pISSN)
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  • 2287-7584(eISSN)
물리치료재활과학회 (korean Academy of Physical Therapy Rehabilitation Science)
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The comparison of muscle activity according to various conditions during smartphone use in healthy adults

  • 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)
  • 투고 : 2016.02.01
  • 심사 : 2016.03.17
  • 발행 : 2016.03.30
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초록

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.

키워드

참고문헌

  1. Korea Communications Commission (KCC), Ministry of Science ICT and Future Planning. Cellphone members statistics. Gwacheon: KCC; 2015.
  2. Yun SH, Min GM, Park DG, Choi YL, Yun SP, Hong SG. Study on the Evaluation of the age of the character input method. J Ergon Soc Korea 2006;10:406-9.
  3. Kim YM, Yoo HS, Joo YJ Choi SH, Wang JW. A study on the use pattern of Korean mobile phone. National Radio Research Agency (RRA), Ministry of Science ICT and Future Planning. Gwacheon: KCC; 2006.
  4. Ryu TB. Performance analysis of text entry with preferred one hand using smart phone touch-keyboard. J Ergon Soc Korea 2011;30:259-64. https://doi.org/10.5143/JESK.2011.30.1.259
  5. Kim CM, Park JH, Kim KH, Oh TO, Son K. Evaluation repetitive strain risk for the thumb joint according to texting types of mobile phones. Korean Soc Precis Eng 2011;11:1477-8.
  6. Park JS. The variables in influencing on smart phone addiction in adolescents and college students [MS thesis]. Yongin: Dankook University; 2011.
  7. Zhang YF, Bang MY. Analysis of variables influencing on the addiction tendencies of chinese high school students at-risk for smartphone addiction. J Spec Child Edu 2014;16:209-26. https://doi.org/10.21075/kacsn.2014.16.3.209
  8. Lee MS. Smartphone addiction and related social concerns [MS thesis]. Seoul: Yonsei University; 2011.
  9. Eom SH, Choi SY, Park DH. An empirical study on relationship between symptoms of musculoskeletal disorders and amount of smartphone usage. J Korean Saf Manage Sci 2013;15:113-20.
  10. Xie Y, Szeto GP, Dai J, Madeleine P. A comparison of muscle activity in using touchscreen smartphone among young people with and without chronic neck-shoulder pain. Ergonomics 2016;59:61-72. https://doi.org/10.1080/00140139.2015.1056237
  11. Lee HK. The comparison of posture in the use of smartphone on muscle fatigue of cervical erector spinae and upper trapezius in healthy adults [MS thesis]. Seongnam: Gachon University; 2014.
  12. Ong FR. Thumb motion and typing forces during text messaging on a mobile phone. Paper presented at: 13th International Conference on Biomedical Engineering; 2008 Dec 3-6; Singapore. p. 2095-8.
  13. Kim GH, Park JH, Son G. Dynamic modeling of thumb acting on smartphone. J Korean Soc Precis Eng 2012;5 Suppl:1207-8.
  14. Karlson AK. Interface design for sing-handed use of small device. Paper presented at: UIST Adjunct Proceedings Doctoral Symposium; 2006 Oct 15-18; Montreux, Switzerland. p. 27-30.
  15. Berolo S, Wells RP, Amick BC 3rd. Musculoskeletal symptoms among mobile hand-held device users and their relationship to device use: a preliminary study in a Canadian university population. Appl Ergon 2011;42:371-8. https://doi.org/10.1016/j.apergo.2010.08.010
  16. Lee M, Hong Y, Lee S, Won J, Yang J, Park S, et al. The effects of smartphone use on upper extremity muscle activity and pain threshold. J Phys Ther Sci 2015;27:1743-5. https://doi.org/10.1589/jpts.27.1743
  17. Kim KS, Lee SW, Choi Y, Jin MR. Carpal tunnel syndrome among service and manufacturing workers with repetitive motion tasks. Korean J Occup Environ Med 1998;10:505-23.
  18. Keun YC. A study on the reliability of EMG examination using EM2. Taehan Chikkwa Uisa Hyophoe Chi 1989;27:149-54.
  19. Kamei K. The reliability and validity of surface electromyography to study the functional status of the lumbar paraspinal muscles [MS thesis]. Melbourne: RMIT University; 2008.
  20. Geisser ME, Ranavaya M, Haig AJ, Roth RS, Zucker R, Ambroz C, et al. A meta-analytic review of surface electromyography among persons with low back pain and normal, healthy controls. J Pain 2005;6:711-26. https://doi.org/10.1016/j.jpain.2005.06.008
  21. Kim CM, Park JH, Kim GH, Son K. A comparative evaluation about force and fatigue on thumb according to input type for repetitive use of mobile phone. J Biomed Eng Res 2011;32:312-8. https://doi.org/10.9718/JBER.2011.32.4.312
  22. Kasman G, Wolf S. Surface EMG made easy: a beginner's guide for rehabilitation clinicians. Scottsdale (AZ): Noraxon USA, Inc.; 2002.
  23. von Tscharner V, Barandun M, Stirling LM. Fatigue-related decrease in Piper rhythm frequency of the abductor pollicis brevis muscle during isometric contractions. J Electromyogr Kinesiol 2011;21:190-5. https://doi.org/10.1016/j.jelekin.2010.10.005
  24. Kim DS. Biomechanical analysis of a smart phone task with different posture [MS thesis]. Daegu: Kyungbuk National University; 2011.
  25. Koo SJ. Effect of the duration of use of smart phones on forward head posture and muscle fatigue and pain [MS thesis]. Changwon: Kyungnam University; 2015.

피인용 문헌

  1. Text neck vol.67, pp.4, 2017, https://doi.org/10.1007/s40664-017-0190-4
  2. Changes in upper limb muscle activity during smartphone usage while in stable and unstable positions and during gait vol.7, pp.3, 2018, https://doi.org/10.14474/ptrs.2018.7.3.119
  3. Electromyography (EMG) and Hand Gripping Force During Standing and Sitting vol.1096, pp.1, 2016, https://doi.org/10.1088/1757-899x/1096/1/012077
  4. Influence of neck flexion angle on gravitational moment and neck muscle activity when using a smartphone while standing vol.64, pp.7, 2016, https://doi.org/10.1080/00140139.2021.1873423