Table 1. Subject characteristics and peak values determined during incremental cycling to exhaustion in naturally-menstruating women (WomenNM) and women using oral contraceptives (WomenOC). Values are mean (┬▒standard deviation).
WomenNM(n = 8) WomenOC(n = 8)
Age (yr) 22(3) 22(4)
Body mass (kg) 63.1 (5.6) 59.5 (6.4)
Height (m) 1.68 (.07) 1.64 (.06)
Body mass index (kg/m2) 22.3 (1.8) 22.2 (1.9)
Oxygen uptake (L/min) 2.89 (.54) 2.66 (.45)
Oxygen uptake (mL/kg/min) 44.8 (5.2) 44.5 (4.2)
Power output (W) 241(54) 227(37)
Blood lactate (mmol/L) 11.2 (1.3) 10.5 (.9)
Heart rate (b/min) 193(8) 195(6)