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An investigation into the effects of physical activity and smoking on lung function

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Ayad, Bashir (2009) An investigation into the effects of physical activity and smoking on lung function. Masters thesis, University of Gloucestershire.

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Official URL: https://eprints.glos.ac.uk/id/eprint/10559

Abstract

There is evidence of attenuated age-related decline in lung function among physically active non-smokers, but available data for the effect of physical activity on lung function in smokers is limited and contradictory. The purpose of this study is to examine the effects of physical activity and cigarette smoking in a range of lung function parameters. This study used a cross-sectional design to investigate the main effects and interaction of physical activity and cigarette smoking in a range of lung function parameters in a total of 68 smoking and non-smoking Caucasians of both sexes between the ages of 30 and 63 ( 42.9 ± 8.26) years recruited from the general population in Gloucester and Cheltenham in the United Kingdom. The participants were asked to fill in a selfadministrated physical activity questionnaire, modified from the past year total physical activity questionnaire (PYTP AQ) which assessed duration, intensity, frequency and type of physical activity. Active participants were defined as those who were currently active, or had a long history of regular physical activity such as swimming, running, jogging, cycling or any other activity at an intensity of at least 60% of maximum oxygen uptake, or a minimum of 60% of maximum heart rate, in an average of at least three occasions per week for a minimum of 20 minutes per occasion during the previous twelve months. Inactive participants were those who had not been engaged in regular vigorous physical activity over the previous year. Smokers were defined as those who were currently smoking and had a long history of smoking with a minimum of 20 years, while non-smokers were individuals who had never regularly smoked or did not smoke at all over the past five years. On the basis of this information, the cohort was split into four groups: Active smokers, inactive smokers, active non-smokers and inactive non-smokers and each group had 17 members. Lung function was assessed using closed circuit electronic spirometer (Microloop, Micro Medical Ltd, Rochester, Kent, UK), which is connected to a PC running Spida 5 software (Microloop, Micro Medical Ltd, Rochester, Kent, UK). The following lung parameters were assessed, forced vital capacity (FVC), forced expiratory volume in the first second (FEV 1), FEV 1/FVC ratio, peak expiratory flow (PEF), and forced expiratory flow rate between 25 percent and 75 percent of FVC FEF25_75. Both absolute lung function parameters and percent predicted values were used for subsequent analysis. Data were analysed using a 2x2 (smoking status x activity status) factorial analysis of variance (ANOVA) performed with the Statistical Package for the Social Science (SPSS) software version 14.0 for data analysis. All data were reported as mean ± standard deviation (SD). Statistical significance was accepted at the p

Item Type:

Thesis (Masters)

Thesis Advisors:

Thesis Advisor	Email	URL
Potter, Christopher	cpotter@glos.ac.uk	UNSPECIFIED
Draper, Steve	sdraper@glos.ac.uk	UNSPECIFIED
How, Stephen	show@glos.ac.uk	https://www.glos.ac.uk/staff/profile/stephen-how/