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The Miriam Hospital, Providence, Rhode Island, USA.
281 healthy, sedentary women aged 18–65 years (mean age 40 y) who had regularly smoked ≥10 cigarettes a day for ≥3 years and who had exercised <2 times a week for ≥6 months. Exclusion criteria were current or planned use of nicotine replacement therapy, medical problems, current psychiatric illness, alcohol abuse, or another substance abuse problem.
134 women were allocated to a 12 session cognitive behavioural smoking cessation programme with 12 weeks of vigorous exercise and 147 were allocated to the same smoking cessation programme but with equal staff contact time in the form of health education lectures rather than vigorous exercise.
Main outcome measure
Abstinence from smoking based on self report verified by saliva cotinine level.
Analysis was by intention to treat. Compared with the control group, women in the exercise group achieved higher levels of continuous abstinence at the end of treatment (p=0.03) and at 3 months of follow up (p=0.03) (table). This outcome was of borderline statistical significance at 12 months of follow up (p=0.052) (table)⇓.
In healthy, sedentary female smokers, a cognitive behavioural smoking cessation programme with vigorous exercise led to higher levels of continuous smoking cessation than did the same programme without vigorous exercise.
One of the holy grails in smoking cessation is an intervention that eliminates the weight gain associated with stopping. Weight gain and life stress are common reasons for relapse to smoking.1 Because exercise has been a useful tool for weight management and stress reduction, Marcus et al conducted a randomised controlled trial to assess the usefulness of exercise for smoking cessation.
This study reports the results of an “efficacy” study that asks the question of whether a supervised exercise programme can assist smoking cessation in a “best case scenario,” not whether an exercise programme assists smoking cessation in a clinical practice setting (an “effectiveness” study). In this well designed controlled trial, motivated smokers were randomised to either an exercise programme or a health education programme which met 3 times each week for 12 weeks. All patients received a 12 session group cognitive behavioural smoking cessation programme with a stop date designed especially for women. The exercise group had greater success in stopping smoking than the control group, and the magnitude of effect was comparable to what would be expected with a 21 mg/24 hour nicotine patch combined with minimal behavioural counselling. The group of exercisers who remained abstinent had a statistically significant lower weight gain at 3 months than control patients, but this reduction in weight gain was no longer present 3 months after the intervention was stopped.
Considering our other options for smoking cessation, should we counsel our clients to start an exercise programme to assist in stopping smoking? Yes, if the client is likely to adopt such a programme. The weight and stress management benefits, however, will probably not be sustained unless exercising becomes a long term lifestyle change.2 Recommending that smokers join a fitness club or community health group may be helpful. If the likelihood of maintaining an exercise programme is low, then we would consider other effective treatments for smoking cessation.
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