Table 2 Comparison of parameters at ventilatory threshold between subjects with and without cigarette smoking
From: Relation between cigarette smoking and ventilatory threshold in the Japanese
Mean ± SD | p | p (after adjusting for age) | p (after adjusting for age and exercise habits) | ||
|---|---|---|---|---|---|
Cigarette smoking (+) | Cigarette smoking (−) | ||||
Men | |||||
Number of subjects | 166 | 241 | |||
Age (years) | 41.8 ± 11.0 | 42.4 ± 11.7 | 0.5803 | ||
Oxygen uptake at ventilatory threshold (ml/kg/min) | 14.3 ± 3.1 | 15.3 ± 4.4 | 0.0193 | 0.0595 | 0.1156 |
Work rate at ventilatory threshold (W) | 79.8 ± 20.7 | 85.0 ± 26.5 | 0.0333 | 0.0377 | 0.0764 |
Heart rate at ventilatory threshold (beats/min) | 105.5 ± 11.0 | 106.3 ± 12.5 | 0.4683 | 0.9970 | 0.1839 |
Women | |||||
Number of subjects | 46 | 372 | |||
Age (years) | 39.6 ± 12.9 | 45.4 ± 11.8 | 0.0019 | ||
Oxygen uptake at ventilatory threshold (ml/kg/min) | 12.0 ± 2.8 | 12.7 ± 2.4 | 0.1011 | 0.0120 | 0.0514 |
Work rate at ventilatory threshold (W) | 52.9 ± 18.1 | 51.1 ± 14.1 | 0.4092 | 0.6883 | 0.6414 |
Heart rate at ventilatory threshold (beats/min) | 106.2 ± 11.4 | 107.1 ± 11.9 | 0.6136 | 0.2680 | 0.0881 |