earticle

영어

The present study was performed to investigate the effect of chronic incline walking on trunk muscle cross sectional area (CSA) in female seniors. Healthy thirty females aged 62-68 years old were recruited from the general community and divided into three groups, control(n=10), level walking(n=10), and incline walking(n=10) group, as their regular exercise pattern. A visual analogue scale (VAS) and a medical history questionnaire were used as survey of health status. Magnetic resonance images of psoas, multifidus and elector spinae muscle was obtained between the fourth (L4) and fifth (L5) lumbar. We hypothesized that the demand of mechanical change with incline walking would produce greater resistant-like stimulation than level walking. The psoas major CSA of incline walking group was 9.0% higher than control and 4.9% higher than level walking group with a 5.1% difference between control and level walking group(p<.01). In the CSA of multifidus, 11.5% and 11.9% difference was observed in incline and level walking group, respectively. The CSA of elector spinae was not significantly different among groups. The total trunk muscle CSA was significantly correlated with age(-3.33, p<.01), weight(0.29, p<.05), exercise frequency(0.32, p<.05), and exercise experience(0.33, p<.01). These results suggest that the chronic incline walking positively effect on the CSA of trunk muscle in senior women.