Effectiveness of physical activity promotion based in primary care: systematic review and meta-analysis of randomised controlled trials

Dear Editor,
Orrow et al [Ref. 1] found that exercise referral may improve the self-reported levels of physical activity of sedentary adults, however it is possible that additional beneficial effects may also occur. Referred individuals may be encouraged to adopt other aspects of a healthy lifestyle.

I surveyed [Ref. 2] the effect on tobacco consumption of cigarette smokers who participated in supervised exercise classes, where the sole aim of the classes was weight loss.

Method Thirty-five smokers (n=35) who attended exercise classes were consulted by telephone interview and by a written questionnaire. They were asked how many cigarettes they smoked per day (i) immediately prior to attending exercise classes and (ii) immediately after attending the last exercise class. Only minor statistical analysis was performed as the data did not fit a normal distribution curve.

Results Forty percent (40%) of all smokers who attended exercise classes reduced their tobacco consumption. The average reduction in the number of cigarettes smoked amongst all the smokers who undertook weight reduction exercise classes was 3.28 cigarettes per day.

Conclusions This study concludes that there is a potential benefit to smokers who take exercise classes in that they reduce the number of cigarettes smoked per day.

Ref. 1 Orrow et al, BMJ 2012;344:e1389

Ref. 2 'The Effect Upon Smoking Habits Of Weight Reduction Exercise Classes', C. Nash, 14/02/11.