抄録
This study investigated to clarify physiological responses during level nordic walking (NW) and downhill nordic walking (DNW) and downhill walking (DW). Seven healthy subjects (4 females and 3 males), aged 20 - 43, were participated in this study as a subject. They performed four treadmill walking tests, i.e. one incremental exhaustion test measuring maximal oxygen uptake (V02max), and three 10 min walking tests. The 10 min walking tests were performed at 60m/min in NW DNW and DW, respectively. Downhill grade was 16% during DNW and DW. Oxygen and DNW were significantly higher than those of DW (p<0.001). But there were no significant differences in NW and DNW. OMNI scale of the upper body of DNW and NW were significantly higher than that of DW (p<0.001). Additionally, OMNI scale of the upper and whole body during DNW were significantly higher than NW (p<0.01). On the contrary, OMNI scale of DNW was significantly lower than DW (p<0.05). Our results demonstrate that DNW on the treadmill induce to increase the intensity up to a similar level of NW. Additionally, it was suggested that metabolic rate of the upper body in DNW might be higher than in NW.
