TEST 1 (Familiarization) TEST 2 (Formal Test) P-value for paired-sample t-test Intra-Class Correlation Coefficient POpeak(W) 67.8 (30.4) 76.8 (34.0) p=0.005 * 0.968 Absolute peak (l.min-1) 1.083 (0.373) 1.134 (0.440) p=0.388 0.897 HRpeak(beats.min-1) 134.2 (18.6) 132.3 (25.1) p=0.705 0.727 GET (l.min-1)† 0.629 (0.122) 0.665 (0.222) p=0.538 0.626 RER at peak 1.136 (0.183) 1.167 (0.185) p=0.449 0.755

Table 3: Test-retest analysis results (RER: respiratory exchange ratio; * : value from TEST 2 statistically significantly different from value from TEST 1, at the 5% level; †: only 8 of 11 subjects’ datasets available for GET analysis).