Table 2.

Cardiopulmonary data of the subjects at anaerobic threshold, respiratory compensation point, and peak exercise (n = 22).

	AT	RC	Peak exercise
Speed (km · h−1)	9.7 ± 1.4	12.4 ± 1.4	14.9 ± 1.2
${\dot{\text{V}}\text{O}}_{\text{2}}$ (ml · kg−1 · min−1)	34 ± 5	43 ± 5	50 ± 6
%${\dot{\text{V}}\text{O}}_{\text{2}}\text{R}$	65 ± 7	84 ± 6	–
${\dot{\text{V}}}_{\text{E}}$ (L/min)	64.7 ± 10.8	92.6 ± 14.1	137.5 ± 17.6
HR (bpm)	148 ± 12	173 ± 6	190 ± 7
RER	0.94 ± 0.04	1.01 ± 0.04	1.09 ± 0.04
PETCO2 (mmHg)	45.2 ± 3.2	42.8 ± 3.1	37.2 ± 4.9
SpO2%	–	–	93 ± 3

Values are means ± SD. AT, anaerobic threshold; RC, respiratory compensation point; ${\dot{\text{V}}\text{O}}_{\text{2}}$, pulmonary oxygen uptake; %${\dot{\text{V}}\text{O}}_{\text{2}}\text{R}$, percentage value of ${\dot{\text{V}}\text{O}}_{\text{2}}$ reserve; ${\dot{\text{V}}}_{\text{E}}$, ventilation; HR, heart rate; RER, respiratory exchange ratio; PETCO₂, end-tidal carbon dioxide partial pressure; SpO₂%, arterial oxygen saturation.