Possible gender differences in the effect of exercise on XXXX ventilatory response.

@entity1 @entity519 @entity101
Gender differences in resting ventilation and @entity519 ventilatory response (HVR) have been reported. Ventilation and HVR are closely related to changes in metabolic rate in @entity1 . However, it is unclear whether there is a comparable relationship between metabolic rate and ventilation or HVR in @entity1 . We studied 13 @entity1 and 12 @entity1 to determine whether exercise-induced increases in metabolic rate influenced ventilation, HVR, and hypercapnic ventilatory response (HCVR) differently in @entity1 and @entity1 . Minute ventilation per unit metabolic rate was higher (lower end-tidal PCO2) in @entity1 than @entity1 during rest and mild exercise. Resting HVR values were similar in @entity1 and @entity1 . With mild, exercise-induced @entity101 (24 +/- 4% in @entity1 and 27 +/- 2% in @entity1 , p = NS), HVR increased in @entity1 (p less than 0.05) but not in @entity1 . Moderate exercise-induced @entity101 (313 +/- 13% in @entity1 and 330 +/- 13% in @entity1 , p = NS), raised @entity519 responses in both sexes. HCVR values were similar in @entity1 and @entity1 at rest and during mild exercise. Moderate exercise increased HCVR equally in the sexes. Thus the higher resting ventilation and lesser change in HVR during mild exercise suggested that @entity1 were less sensitive to mild metabolic rate stimulation than @entity1 .
