Table 2: Ammonia threshold (AmT) and lactate threshold (LT) at the three CO₂ levels

	Air (n=8)	3% CO2 (n=8)	6% CO2 (n=8)
AmT (%${\dot{V}}_{O_{2\max }}$ )	63.0 ± 8.6	61.3 ± 9.8	62.3 ± 5.2
LT (%${\dot{V}}_{O_{2\max }}$ )	42.0 ± 8.1	43.8 ± 8.9	44.3 ± 7.1

Values are means ± SD.