the effect of forward shoulder correction on pulmonary function of elementary female students

background: human body posture influences on his/her physiological functions. the purpose of this study was to investigate the effect of forward shoulder correction on pulmonary function of elementary female students. methods: subjects of this quasi-experimental research were two groups (n=20) of students with normal posture (np) and forward shoulder posture(fsp)  which is divided randomly into two control (n=10) and experimental (n=10) groups. experimental work included stretch-strength training for 6 weeks. the amount of shoulder deviation and slow vital capacity (svc) and forced vital capacity (fvc) were evaluated at pretest and post test by double square device and spirometre respectively.  results: the results of paired t-test indicated a significant reduction of shoulder deviation and significant increase of svc and fvc due to experimental work in the fsp group (p≤0.05) but in the np group no significant changes were observed. conclusion: based on these findings, corrective exercises causes fvc and svc improvement through correction of elementary female students’ forward shoulder posture.