Abstract
The purpose of this study was to determine the influence of posture on ventilatory muscle strength and on lung function.Maximum static inspiratory pressures (MIPS), maximum static expiratory pressures (MEPS) and lung function measurements (FVC, FEV1, PEFR) were obtained in three different body positions in 57 normal subjects and in 16 asthmatic patients.Statistical analysis of the data obtained showed that changes in position influence the ventilatory muscle function and lung function values.The sitting lean forward and the sitting erect positions were the better positions in the normal group. The findings revealed that the sitting lean forward position was the optimum position for the asthmatic group (p 0,001).
Highlights
Lung function measurements (FVC, FEV, PEFR) were obtained in three different body positions in 57 normal subjects and in 16 | asthmatic patients. | Statistical analysis of the data obtained j showed that changes in position influence the i ventilatory muscle function and lung function values
Five tests were conducted on each subject in b o th groups
Fifteen values were obtained from each subject
Summary
The purpose of this study was to determine the influence of posture on ventilatory muscle strength and on lung function. A lterations in lung function as affected by changes in p o s tu re h av ebeen in v e stig a te d p re v io u s ly .1’2'3,4'5 O niell and associates[6] found in their study th at the seated leaning forw ard position yielded optim um results in a group o f patien ts w ith chronic airflow lim itation in term s of inspiratory m uscle perform ance and relief of dyspnoea. The present study was undertaken to exam ine the effect of three postures, sitting erect (SE), sitting lean forw ard (S L F ) and supine lying (SL ) on ventilatory m uscle perform ance and on lung function. (iii) to d eterm in e the degree to w hich changes in position effected lung function and ventilatory m uscle strength in each group. The order of the positions in w hich the spirom etric m easurem ents was obtained was again varied in random sequence
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