TABLE 4.
Baseline correlations between performance and physiological variables (n = 29).
| Variable | TTDP | VO2max (mL–⋅1 kg–0.67⋅min–1) | MAS |
| Age | −0.09(0.23) | 0.15 (0.25) | 0.07(−0.28) |
| BW | −0.41*(−0.01) | 0.43*(−0.02) | 0.40*(−0.03) |
| TTDP | |||
| seconds | − | −0.73**(−0.39) | −0.79**(−0.58**) |
| RUN-VO2max | |||
| mL⋅kg–1⋅min–1 | −0.68**(−0.33) | 0.96**(0.92**) | 0.69**(0.34) |
| L⋅min–1 | −0.71**(−0.35) | 0.92**(0.77**) | 0.72**(0.27) |
| mL⋅kg–0.67⋅min–1 | −0.73**(−0.39) | − | 0.75**(0.37) |
| HR | −0.07(−0.07) | −0.02(−0.003) | −0.03(−0.01) |
| RER | −0.14(−0.001) | −0.01(−0.34) | 0.08(−0.15) |
| [La–b] | 0.26 (0.24) | 0.08 (0.27) | −0.22(−0.23) |
| RPE | −0.36(−0.45*) | 0.06 (0.03) | 0.16 (0.21) |
| DP-VO2peak | |||
| mL⋅kg–1⋅min–1 | −0.79**(−0.63**) | 0.75**(0.44*) | 0.81**(0.65**) |
| L⋅min–1 | −0.78**(−0.57**) | 0.77**(0.34) | 0.79**(0.48*) |
| mL⋅kg–0.67⋅min–1 | −0.83**(−0.69**) | 0.80**(0.46*) | 0.85**(0.68**) |
| %RUN-VO2max | −0.24(−0.32) | −0.20(−0.46*) | 0.24 (0.32) |
| HR | −0.06(0.08) | −0.001(−0.12) | 0.09 (0.03) |
| RER | 0.18(0.49*) | 0.11(−0.09) | −0.03(−0.29) |
| [La–b] | 0.08 (0.21) | 0.09(−0.10) | 0.11(−0.04) |
| RPE | −0.01(−0.16) | −0.03(0.14) | −0.04(0.13) |
| TTE (s) | −0.84**(−0.72**) | 0.78**(0.43*) | 0.93**(0.85**) |
| CDP at LT | |||
| mL⋅kg–1⋅m–1 | 0.41*(0.17) | −0.40*(−0.07) | −0.69**(−0.63**) |
| mL⋅kg–0.67⋅m–1 | 0.27 (0.17) | −0.23(−0.08) | −0.56**(−0.62**) |
| MAS | |||
| m⋅min–1 | −0.79**(−0.58**) | 0.75**(0.37) | − |
| km⋅h–1 | −0.79**(−0.58**) | 0.75**(0.37) | − |
| LT | |||
| %DP-VO2peak | −0.05(−0.13) | −0.03(0.17) | −0.24(−0.19) |
| HR | 0.08 (0.01) | −0.25(−0.19) | −0.22(−0.11) |
| VO2 | −0.72**(−0.56**) | 0.66**(0.46*) | 0.59**(0.37) |
| [La–b] | 0.25(0.51**) | −0.06(−0.26) | −0.23(−0.51**) |
| Speed (km⋅h–1) | −0.82**(−0.64**) | 0.77**(0.48*) | 0.91**(0.84**) |
| Strength | |||
| 1RM half squat | −0.49**(−0.15) | 0.59**(0.33) | 0.55**(0.29) |
| 1RM pull-down | −0.64**(−0.27) | 0.61**(0.07) | 0.60**(0.13) |
| Power half squat | −0.48**(−0.12) | 0.54**(0.10) | 0.49**(0.05) |
| Power pull-down | −0.53**(−0.27) | 0.50**(−0.14) | 0.54**(0.07) |
Values are correlation coefficients r and partial correlation coefficients corrected for sex in parenthesis. BW, body-weight. Kg, kilograms. TTDP, double poling time trial. RUN-VO2max, maximal oxygen uptake in running. mL⋅ < kg ⋅min–1, milliliters per kilogram bodyweight per minute. L⋅min–1, liters per minute. mL⋅kg–0.67⋅min–1, milliliters per kilogram raised to the power of −0.67 per minute. HR, heart rate. RER, respiratory exchange ratio. [La–b], blood lactate concentration. RPE, rate of perceived exertion. %RUN-VO2max, fractional utilization of RUN-VO2max at DP-VO2peak. TTE, time to exhaustion. CDP, oxygen cost of double poling at lactate threshold. mL⋅kg–1⋅m–1, milliliters per kilogram per meter. mL⋅kg–0.67⋅m–1, milliliters per kilogram raised to the power of −0.67 per meter. MAS, maximal aerobic speed. LT, lactate threshold. VO2, oxygen uptake. Km, kilometers. H, hours. 1RM, one repetition maximum. * p < 0.05 significant correlation. ** p < 0.01 significant correlation.