Table 2. Metabolic data from the four field trials. Data are expressed as means (±SD).

RF (b·min-1)	VT (L·b-1)	VE (L·min-1)	VO2 (ml·min-1)	VCO2 (ml·min-1)	VO2 (ml·kg-1 ·min-1)	%VO2 max
WS100	41.6±2.9	2.1±0.4	86.0±14	2548±511	2309±470	34.0±6.8	51.0±10.2
Track	41.5±1.1	2.7±0.2	111.0±6.8	3562±270	3640±249	47.5±3.6	71.2±5.4
MHC1	37.8±3.9	2.8±0.2	106.0±7.2	3374±174	NA	44.4±2.3	66.6±3.4
MHC2	41.3±2.6	2.5±0.3	102.1±14	2909±379	2799±378	38.2±5.0	57.4±7.5

Abbreviations: WS100 = Western States 100, MHC1 = Moses H. Cone run 1, MHC2 = Moses H. Cone run 2