Table 1 Lactate, respiratory exchange ratio, and heart rate responses during continuous exercise and high-intensity interval exercise of low, moderate, and high intensities

 CE, mmol L⁻¹

0.59 ± 0.11

1.32 ± 0.19

4.52 ± 0.70

 HIIE, mmol L⁻¹

1.44 ± 0.45

2.57 ± 0.55

5.11 ± 1.37

 CE

0.81 ± 0.03

0.88 ± 0.03

0.91 ± 0.03

 HIIE

0.93 ± 0.08

0.94 ± 0.07

0.95 ± 0.04

 CE, beats minute⁻¹

99 ± 3

111 ± 5

164 ± 8

 HIIE, beats minute⁻¹

93 ± 16

118 ± 12

165 ± 11