Figure 1

The steady state aerobic power${\overline{Q}}_a$and the virtual steady state$\overline{\tilde{Q}}$in J/s as functions of work rate P in J/s when running with poles at the angle of inclination of 0.105 radians for 5-min steady state work rates. The lower horizontal line is the lactate threshold = 1654 J/s, and the upper horizontal line the maximal aerobic power $Q_{\mathit{max}}=1886J/s$. ■: Experimental data, $v_1=2.08\text{m}/\text{s},{\overline{Q}}_{\mathit{vir}}=0.59Q_{\mathit{max}}$, $v_2=2.33\text{m}/\text{s},{\overline{Q}}_{\mathit{vir}}=0.66Q_{\mathit{max}}$, $v_3=2.64\text{m}/\text{s},{\overline{Q}}_{\mathit{vir}}=0.74Q_{\mathit{max}}$, $v_4=2.83\text{m}/\text{s},{\overline{Q}}_{\mathit{vir}}=0.80Q_{\mathit{max}}$, $v_5=3.08\text{m}/\text{s},{\overline{Q}}_{\mathit{vir}}=0.87Q_{\mathit{max}}$, $v_6=3.19\text{m}/\text{s},{\overline{Q}}_{\mathit{vir}}=0.90Q_{\mathit{max.}}$