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PURPOSE : The purpose of this study is figure out some change of respiratory function by respiratory accessory muscle stretching for 4Wks. METHOD : The all subjects are healthy and participated voluntary We had divided 2group (respiratory accessory muscle stretching group and control group)and the effects on respiratory function were measured with digital spirometry. Passive stretching was conducted in experimental group and these exercise was included the scalene mid. fiber, upper trapezius, and SCM. There were no intervention to the control group. RESULT : Experimental group was a significant difference in the IC and VT(p<0.05) between before and after generations. The control group, however, showed no change(p>0.05). CONCLUSION : This study demonstrated that passive stretching exercises of the scalene muscle middle fiber, upper trapezius, SCM could be helpful for inspiratory capacity and tidal volume improvement.