Interaction Effect Of Smoking And Physical Activity On Cardiopulmonary Endurance In Male Adults

Abstract

Cardiopulmonary endurance was a crucial part of health in people. The physical activity benefited the cardiopulmonary endurance, while both active smoking and passive smoking made it decrease. PURPOSE: To determine whether there existed the interaction effects between cigarettes smoking and physical activity on cardiopulmonary endurance. METHODS: 420 male adults were recruited in Beijing and Hezhou,Guangxi. The investigation on cigarette smoking and physical activity were carried out by the international PA questionnaire and the health P.E. questionnaire, according to the smoke, all the subjects were divided into two main groups(CS group and nCS group), and then each main group were further divided into three sub-groups(CSL,CSM,CSH group and nCSL,nCSM,nCSH group ) depending on their individual daily light, moderate or heavy physical activity. The subjects numbers of each group(CSL,CSM,CSH group and nCSL,nCSM,nCSH group) in turn were 45, 69, 74 and 38, 92, 102 respectively. The peak Vo2max were measured by GXT protocol on cycle ergometer. RESULTS: (1)Cardiopulmonary endurance of the smokers were lower than that of the nonsmokers significantly(25.94±6.11ml/kg/min VS 27.87±7.17ml/kg/min,P=0.003),and smoke index(Number of daily smoking multiply years of smoking) had negative relation with cardiopulmonary endurance(r=-0.395,p<0.01).The study found that the higher smoke index led to the lower cardiopulmonary endurance in men. (3)Cardiopulmonary endurance of the nCSH group showed significantly different with nCSM or nCSL group(P<0.05,p<0.01),but statistical difference were not found between nCSM group and nCSL group(p>0.05).(4)Smoking and physical activity showed no interaction effect on cardiopulmonary endurance(p>0.05). CONCLUSIONS: (1)The cardiopulmonary endurance of the male adults who smoke cigarettes were lower than that of nonsmokers. (2)The high level of physical activity displayed greater effect on cardiopulmonary endurance.(3)The interaction effects were not found between smoke cigarettes and physical activity on the cardiopulmonary endurance in this study.Acknowledgements:National Key Research and Development Program (2016YFC1300202).