Table 1.
The mean peak values (±standard deviations) and effect sizes for the various parameters monitored during each test protocol.
| Peak values | INCS+I | INCI | INCs | GXP | INDXP | Cohen's d (Range) |
|---|---|---|---|---|---|---|
| Oxygen uptake [mL·min−1] | 4900(402) | 4930(356) | 4850(384) | 4670(469) a | 4830(426) | .06 - .61 |
| Oxygen uptake [mL·min1·kg−1] | 62.2 (5.2) | 63.1 (3.3) | 61.8 (4.3) | 59.5 (4.3) a | 61.5 (4.5) | .07 - .94 |
| Ventilation [L·min−1] | 158 (17 ) | 161(17) | 156(18) | 152(18) | 161(15) | .00 - .54 |
| Respiratory exchange ratio | 1.18 (.06) b | 1.24 (.10) | 1.19 (.06) b | 1.21 (.07) | 1.23 (.08) | .11 - .73 |
| Heart rate [bpm] | 189(11) | 189(9) | 190(9) | 190(10) | 189(10) | .00 - .11 |
| Blood lactate [mmol·L1] | 7.67 (2.55) | 8.44 (2.26) | 7.59 (2.74) | 7.17 (2.09) | 8.47 (2.65 | .01 - .54 |
| Ratings of perceived exertion | 18(1) | 19(1) | 18(1) | 18(1) | 19(1) | .00-1.00 |
| Time to exhaustion [min: sec] | 10:54 (1:30) c,d | 7:30 (1:12) c | 7:18 (1:06) c | 25:30 (3:00) c | 9:48 (:54) c,d | .09-8.05 |
S = increase in speed; I = increase in inclination; INC = incremental test; GXP = step test; INDXP = open individual protocol.
a p < 0.01 in comparison to the corresponding values for all of the ramp tests (INCs+I, INCS, INCI, INDXP).
b p < 0.05 for INCs versus INCI, INCS+I versus INDXP and INCS+I versus INCI.
c p < 0.01 for the GXP versus all ramp tests, INCS versus INDXP and INCS+I, and INCI versus INDXP and INCS+I.
d p < 0.05 for INDXP versus INCS+I. (RER = respiratory exchange ratio, RPE = rating of perceived exertion).