Table 4. Bonferroni-Holm adjusted correlations (rxy) and partial correlations (rxy-z: maturity offset as confounder) between roller skiing test performance and PXC. BOYS (n = 33) GIRLS (n = 16) rxy rxy-z rxy Outdoor DP tests DP 350-m flat (m/s) .85*** .65*** .67 DP 225-m uphill (m/s) .80*** .56** .83** DP 575-m total (m/s) .83*** .62*** .81** Cycle rate 350-m flat (Hz) .41 .17 .19 Cycle rate 250-m uphill (Hz) .43 .34 .50 Cycle rate 575-m total (Hz) .44 .37 .39 Cycle length 350-m flat (m) .45 .28 .29 Cycle length 225-m uphill (m) .68** .32 .59 Cycle length 575-m total (m) .64** .32 .46 50 m Sprint tests DP 50-m (m/s) .88*** .71*** .82** V2 50-m (m/s) .84*** .63*** .83** Leg Skating 50-m (m/s) .67** .47* .75* Cycle rate DP 50-m (Hz) .00 .06 .25 Cycle rate V2 50-m (Hz) .05 .07 .60 Cycle rate Leg Skating 50-m (Hz) -.35 -.01 .66 Cycle length DP 50-m (m) .59* .28 .23 Cycle length V2 50-m (m) .54* .28 .17 Cycle length Leg Skating 50-m (m) .64** .27 -.25 DP, double poling; V2, V2 skating technique *p < 0.05 **p < 0.01 ***p < 0.001.