The aerobic power Q(W, α) as a function of work rate (W) for inclines of α = 0.05 (upper line) and α = 0.12 (lower line) during treadmill roller skiing using the skating technique. The curve fittings are based on least square fit to the data. Maximal metabolic rate (Q
= 1886 J/s) is represented by a straight horizontal line. The lactate threshold (QLT = 1755 J/s) is represented by the straight dotted horizontal line. ■: Experimental values for α = 0.05, ▲: Experimental values for α = 0.12.