| Abstract |
Purpose : The purpose of this study was to investigate the relationship between the muscular endurance of respiratory
muscles and slow vital capacity. Methods : The subjects of this study were 20 students of S university in B city. Slow
vital capacity w as m easured u sing d igital s pirometry (pony F X, C OMED, I taly). S pecifically, w e measured t idal v olume,
inspiratory reserve volume, inspiratory capacity, expiratory reserve volume, and vital capacity. To identify the strength of
the transverse abdominis muscle, holding time of posture was measured with a pressure biofeedback unit (Stabilizer,
Chattanooga Group Inc, USA). To identify the strength of the pelvic floor muscle, the retention time of contraction was
measured with a pressure biofeedback unit (Stabilizer, Chattanooga Group Inc, USA). The posture holding time was
measured with a curl up test to confirm the strength of the rectus abdominis muscle. An inspiratory muscle trainer
(Coach 2, DHD Healthcare, USA) was used to identify muscle strength of the diaphragm. Results : Inspiratory capacity
showed a positive correlation with muscle strength of the diaphragm (ɤ = 0.536, p < 0.05), and expiratory reserve volume
showed a positive correlation with muscle strength of the pelvic floor muscle (ɤ = 0.528, p < 0.05). Vital capacity showed
a positive correlation with muscle strength of the rectus abdominis muscle (ɤ = 0.516, p < 0.05). Conclusion : The
results of this study show that strengthening exercises for the rectus abdominis muscle are needed to improve vital
capacity, strengthening exercises for the pelvic floor muscle are needed to increase expiratory reserve volume, and
strengthening exercises for the diaphragm are needed to enhance inspiratory capacity. |