Table 2. Collinearity Results of Variable Indicators. Parameters X Parameters M Tolerance VIF TRIMP·min-1 (Index) Peak VO2 (mL·kg-1·min-1) 0.283 3.540 TRIMP·min-1 (Index) Average VO2 (mL·kg-1·min-1) 0.139 7.174 TRIMP·min-1 (Index) Average RespR (breaths·min-1) 0.383 2.612 TRIMP·min-1 (Index) Average VE (L·min-1) 0.234 4.269 Average HR (bpm) Peak VO2 (mL·kg-1·min-1) 0.351 2.849 Average HR (bpm) Average VO2 (mL·kg-1·min-1) 0.109 9.150 Average HR (bpm) Average RespR (breaths·min-1) 0.334 2.992 Average HR (bpm) Average VE (L·min-1) 0.227 4.398 Peak HR (bpm) Peak VO2 (mL·kg-1·min-1) 0.181 5.514 Peak HR (bpm) Average VO2 (mL·kg-1·min-1) 0.404 2.478 Peak HR (bpm) Average RespR (breaths·min-1) 0.549 1.822 Peak HR (bpm) Average VE (L·min-1) 0.429 2.330 EE Total (kcal) Peak VO2 (mL·kg-1·min-1) 0.774 1.292 EE Total (kcal) Average VO2 (mL·kg-1·min-1) 0.824 1.214 EE Total (kcal) Average RespR (breaths·min-1) 0.828 1.208 EE Total (kcal) Average VE (L·min-1) 0.553 1.807 TRIMP·min-1, training impulse per minute; VO2 oxygen uptake; RespR, respiratory rate; VE, minute ventilation; HR, heart rate; EE_total, total energy expenditure; bpm, beats·min-1; mL·kg-1·min-1, milliliters per kilogram per minute; L·min-1, liters per minute; VIF, variance inflation factor; bpm = beats·min-1; VO2 in mL·kg-1·min-1; RespR in breaths·min-1; VE in L·min-1; EE_total in kcal. Notes: Parameters X = predictor; Parameters M = mediator.