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/m
2
)
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)