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Convergence Study of Wearing Head-Mounted Display on Cervical Range of Motion, Neck Muscles Thickness, and Pain

헤드 마운티드 디스플레이 착용이 목 관절가동범위와 목 근육 두께 및 통증에 미치는 융합연구

  • 오소현 (백석대학교 보건학부 물리치료학과) ;
  • 정성대 (백석대학교 보건학부 물리치료학과) ;
  • 심재훈 (백석대학교 보건학부 물리치료학과) ;
  • 양노열 (충남도립대학교 작업치료학과)
  • Received : 2020.06.25
  • Accepted : 2020.09.20
  • Published : 2020.09.28

Abstract

The purpose of this study was to evaluate the effects of wearing Head-Mounted Display (HMD) on the cervical range of motion (CROM), neck muscle thickness, and pain in healthy young adults. The HMD group(male=16, female=7) was asked to perform sitting comfortably in a backless chair with hands on their knees with the HMD was worn on their heads to watch the video for 30 minutes. The control group(male=15, female=8) was asked to sit in the same posture as the HMD group for 30 minutes. CROM, neck muscle thickness, and pressure pain threshold (PPT) of both the upper trapezius and levator scapulae were measured before and after intervention. CROM and PPT of the upper trapezius and levator scapulae in the HMD group were significantly decreased and the thickness of the muscles in the HMD group were significantly increased more than in the pre-test (p<.05). There was no significant difference in CROM, muscle thickness, and PPT in the control group. Wearing HMD for a long time can cause a decrease in CROM and PPT and an increase in muscle thickness, and there is a risk of developing musculoskeletal disorders in the neck and shoulder. Therefore, this study recommends maintaining the correct posture of the neck and shoulder and using HMD only for an appropriate time.

본 연구는 헤드 마운티드 디스플레이(Head-Mounted Display; HMD) 사용이 건강한 젊은 성인들의 목관절가동범위(CROM)와 목 근육 두께 및 통증에 미치는 영향을 분석하였다. HMD 군(남자 16명, 여자 7명)은 HMD를 착용하고 30분 동안 정해진 영상을 시청하도록 하였다. 대조군(남자 15명, 여자 8명)은 HMD군과 동일한 자세로 HMD 착용없이 30분 동안 앉아있게 하였다. 실험 전·후에 목관절가동범위, 위등세모근과 어깨올림근의 두께와 압력통증역치를 측정하고 대응표본 t검정과 독립 t검정으로 분석하였다. HMD 군의 목관절가동범위와 양쪽 위등세모근과 어깨올림근의 압력통증역치는 사전 검사 보다 유의하게 감소하였고(p<.05), 양쪽 위등세모근의 두께는 유의하게 증가하였고(p<.05). 반면에, 대조군은 목관절가동범위, 근육 두께 및 압력통증역치에서 유의한 차이가 없었다(p>.05). 분석 결과, 장시간 HMD 사용은 목관절가동범위와 압력통증역치를 감소시키고 근육을 비대하게 하여 목과 어깨의 근골격계 질환을 야기할 수 있으므로, 본 연구는 올바른 자세를 유지하며 적절한 시간 동안만 HMD를 사용할 것을 권장한다.

Keywords

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