Table 4 Comparison of parameters at ventilatory threshold among subjects with and without cigarette smoking and exercise habits
From: Relation between cigarette smoking and ventilatory threshold in the Japanese
A Cigarette smoking (+) Exercise habits (+) | B Cigarette smoking (−) Exercise habits (+) | C Cigarette smoking (+) Exercise habits (−) | D Cigarette smoking (−) Exercise habits (−) | |
|---|---|---|---|---|
Men | ||||
Number of subjects | 52 | 112 | 114 | 129 |
Oxygen uptake at ventilatory threshold (ml/kg/min) | 15.6 ± 3.7 | 16.9 ± 5.4 | 13.8 ± 2.6ab | 13.8 ± 2.5ab |
Work rate at ventilatory threshold (W) | 84.8 ± 25.2 | 92.5 ± 31.8 | 77.5 ± 18.0b | 78.6 ± 18.8b |
Heart rate at ventilatory threshold (beats/min) | 103.8 ± 12.2 | 104.7 ± 13.3 | 106.2 ± 10.3 | 107.7 ± 11.6 |
Women | ||||
Number of subjects | 8 | 97 | 38 | 275 |
Oxygen uptake at ventilatory threshold (ml/kg/min) | 14.4 ± 5.0 | 13.2 ± 3.3 | 11.5 ± 1.8ab | 12.4 ± 2.1 |
Work rate at ventilatory threshold (W) | 70.0 ± 27.0 | 53.2 ± 17.3a | 49.3±13.5a | 50.3 ± 12.8a |
Heart rate at ventilatory threshold (beats/min) | 105.6 ± 13.3 | 104.1 ± 12.0 | 106.3±11.2 | 108.2 ± 11.7b |