Physical Therapy Korea (한국전문물리치료학회지)

Korean Research Society of Physical Therapy (한국전문물리치료학회)
권호 표지

A Comparison of Vital Capacity Values with Healthy Subjects in Standing and Head-Down Positions

자세에 따른 폐활량의 변화

  • Song, Jee-Young (Department of Rehabilitation, College of Health Science, Yonsei University) ;
  • Sim, Hyun-Vo (Department of Rehabilitation, College of Health Science, Yonsei University) ;
  • Current, Marion E. (Department of Rehabilitation, College of Health Science, Yonsei University) ;
  • Lee, Yu-Ra (Dept. of Physical Therapy, Yonsei Rehabilitation Hospital, Yonsei University Medical Center)
  • 송지영 (연세대학교 보건과학대학 재활학과) ;
  • 심현보 (연세대학교 보건과학대학 재활학과) ;
  • 구애련 (연세대학교 보건과학대학 재활학과) ;
  • 이유라 (연세의료원 재활병원 물리치료실)
  • Published : 1996.05.18
Download PDF
⟨ Previous Next ⟩

Abstract

Body position is known to have an effect on vital capacity(VC). The purpose of this study was to examine effect on VC of posture, sex and smoking, and the difference between predicted and measured values of VC. VC was measured in the standing and the $30^{\circ}$ head-down position in 40 healthy subjects (20 men and 20 women) in a random order of testing. When subjects changed from standing to head-down position, this VC decreased by 19.9%. In both positions, VC changes in men were significantly larger than in women. No statistically significant difference was found in men who smoked. There was no difference between the predicted and measured values in men. But measured values were larger than predicted values in women. Because VC can decrease by 19.9% in the head-down position due to the effect of gravity, attention should be paid especially to patients who are placed in the head-down position for postural drainage since they already have a decreased VC.

Keywords