title: Seasonal variations of ventilatory response to hypercapnia at rest.
abstract: In order to examine the seasonal variation of CO2 sensitivity, the slope (S) of the ventilatory response to CO2 was determined in 10 healthy males throughout a year. It was found that the average value of logarithm S was significantly (p less than 0.05) higher in the September than in the annual average, though average magnitude of S was not significantly different. In addition, the average value of ventilation (VE(60] corresponding of PACO2 60 mmHg was significantly (p less than 0.05) lower in January than in September. These results indicate that the timing of the start and/or finish of training is an important factor in the effect of physical training on the S and VE(60).
authors.affiliation: Research Center of Health, Physical Fitness and Sports, Nagoya University, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Hiruta
authors.forename: K
authors.initials: K
authors.lastname: Ishida
authors.forename: M
authors.initials: M
authors.lastname: Miyamura
mesh_terms: D000293:Adolescent; D000328:Adult; D006801:Humans; D006935:Hypercapnia / Q000503:physiopathology*; D008297:Male; D010507:Periodicity; D010806:Physical Education and Training; D012119:Respiration / Q000502:physiology*; D012621:Seasons