Journal of the Korean Society of Physical Medicine (대한물리의학회지)

The Korean Society of Physical Medicine (대한물리의학회)
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Comparison of Forced Vital Capacity and Maximal Voluntary Ventilation Between Normal and Forward Head Posture

정상자세와 머리전방자세 사이의 강제폐활량과 최대 수의적 환기량 비교

  • Han, Jin-Tae (Department of Physical Therapy, Kyungsung University) ;
  • Go, Min-Ji (Department of Physical Therapy, Graduate School of Clinical Pharmacy and Health, Kyungsung University) ;
  • Kim, Yeong-Ju (Department of Physical Therapy, Graduate School of Clinical Pharmacy and Health, Kyungsung University)
  • 한진태 (경성대학교 물리치료학과) ;
  • 고민지 (경성대학교 임상약학보건대학원 물리치료학과) ;
  • 김영주 (경성대학교 임상약학보건대학원 물리치료학과)
  • Received : 2014.12.11
  • Accepted : 2015.01.20
  • Published : 2015.02.28
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Abstract

PURPOSE: The purpose of this study was to investigate the vital capacity and maximal voluntary ventilationin subjects with forward head posture (FHP). METHODS: Twenty-eight subjects participated in this study (normal 14, FHP 14) and were resident in B city. The mean age, height and weight of subjects was 22.80yrs, 169.36cm and 62.79kg. Subjects were asked to breath maximally for FVC and repeatedly for MVV during 12 seconds. The variables of data were collected as follows: Forced Vital Capacity(FVC), Forced Expiratory Volume in One Second($FEV_1$), $FEV_1$/FVC, Maximal Voluntary Ventilation(MVV). Each trial was performed by 3 times and we used the means to analyze the data. The mann-whitney U test and independent t-test were used to compare the vital capacity between normal and FHP subjects. All statistical analyses were performed using SPSS 21.0 for window versionand p-values less than 0.05 were used to identify significant differences. RESULTS: The FVC, $FEV_1$, $FEV_1$/FVC and MVV of FHP subjects were decreased more than that of normal subjects and the difference was statistically significant between two groups. CONCLUSION: The vital capacity of subjects with FHP was generally lower than normal subjects. This study shows that the vital capacityof subjectswith FHP could be decreased due to the bad neck posture that weakens the respiratory accessory muscles of neck.

Keywords

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