最大作業能力と肺機能に及ぼす習慣的喫煙の影響

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To evaluate the effects of cigarette smoking on some of the cardiorespiratory responses to maximal work as well as on pulmonary functions, a group of male adult subjects, 5 smokers and 5 nonsmokers, was studied. Work consisted of a bicycle ergometer test. For the determination of lung functions, Forced Vital Capacity (FVC) and Forced Expiratory Volume in one second (FEV_<1.0>) were tested. FEV_<1.0>%, the ratio of FEV_<1.0> to FVC was also calculated. A resting carboxyhemoglobin (HbCO) level in the smoking group was significantly (P<0.001) higher than that in the nonsmoking group. No significant differences were seen in resting HR, systolic and diastolic blood pressures between smokers and nonsmokers. The percentage of body fat (%fat) in the smoking group was larger than that in the nonsmoking group. In the maximal values through the bicycle ergometer test, oxygen uptake, and ventilation in the nonsmoking group were significantly (P<0.05) higher but HR and systolic blood pressure were not significantly different as compared to those in the smoking group. During recovery after the maximal work, there were no significant differences in HR changes between the groups whereas oxygen uptakes were significantly lower in the non-smoking group than those in the smoking group. Pulmonary function tests performed on the two groups revealed normal results for each group. No significant difference was observed in FVC. However, the higher values of FEV_<1.0> and FE V_<1.0>% in nonsmokers than those in smokers were significant. These findings suggest that habitual cigarette smoking lowers maximal work performance as well as pulmonary function.
中京大学の論文
2002-05-20

最大作業能力と肺機能に及ぼす習慣的喫煙の影響

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