Figure 8

Estimation of the relationship between various parameters. The relationship between (A) oxygen uptake ($\stackrel{·}{V}{O}_2$) and speed, (B) total integrated electromyography (iEMG) of lower extremity muscles and speed during Nordic walking (NW) and level walking (LW), and (C)$\stackrel{·}{V}{O}_2$ and total iEMG of leg muscles during LW of the subject. The$\stackrel{·}{V}{O}_2$ of the lower extremity muscles during NW can be estimated from the numerical linear formulas (C) for$\stackrel{·}{V}{O}_2$ and iEMG during LW.