title: Smokers' physical activity and weight gain one year after a successful versus unsuccessful quit attempt.
abstract: OBJECTIVE
  To examine whether smokers' physical activity is related to weight change following a quit attempt.
  
  
  METHODS
  Data were analyzed for participants (n=683) of a randomized controlled trial comparing the efficacy of different smoking cessation pharmacotherapies (Wisconsin, 2005-2008). Activity (assessed via pedometry) and body weight were measured in the days surrounding the quit day and again one year later, at which time 7-day point-prevalence abstinence from smoking was assessed. We examined the effects of quitting, physical activity, and their interaction, on a one-year weight change with relevant covariate adjustment.
  
  
  RESULTS
  Participants were predominantly female (57%), 46 ± 11 years of age (mean ± SD), and took 7544 ± 3606 steps/day at baseline. Of those who quit, 87% gained weight. A main effect was found for quitting (p<0.001), but not physical activity (p=0.06). When pattern of activity was examined across the 1-year study period, quitters who decreased their physical activity had significantly greater weight gain than quitters who increased their physical activity (p<0.01) or maintained a high level of activity (p=0.02).
  
  
  CONCLUSIONS
  Physical activity is associated with an attenuation of the weight gain that often occurs after quitting smoking.
authors.affiliation: Department of Population Health Sciences, University of Wisconsin-Madison, 507A Warf Office Building, 610 Walnut St, Madison, WI 53726, USA. Electronic address: gennuso@wisc.edu.
authors.forename: Keith P
authors.initials: KP
authors.lastname: Gennuso
authors.affiliation: Department of Kinesiology, University of Wisconsin-Madison, 2057 Gymnasium-Natatorium, 2000 Observatory Dr, Madison, WI 53706, USA.
authors.forename: Keith M
authors.initials: KM
authors.lastname: Thraen-Borowski
authors.affiliation: Center for Tobacco Research and Intervention, Department of Medicine, University of Wisconsin-Madison, 1930 Monroe St, Suite 200, Madison, WI 53711, USA; Department of Family Medicine, University of Wisconsin-Madison, 1930 Monroe St, Suite 200, Madison, WI 53711, USA.
authors.forename: Tanya R
authors.initials: TR
authors.lastname: Schlam
authors.affiliation: Department of Family Medicine, University of Wisconsin-Madison, 1100 Delaplaine Ct, Madison, WI 53714, USA.
authors.forename: Tara L
authors.initials: TL
authors.lastname: LaRowe
authors.affiliation: Center for Tobacco Research and Intervention, Department of Medicine, University of Wisconsin-Madison, 1930 Monroe St, Suite 200, Madison, WI 53711, USA; Department of Family Medicine, University of Wisconsin-Madison, 1930 Monroe St, Suite 200, Madison, WI 53711, USA.
authors.forename: Michael C
authors.initials: MC
authors.lastname: Fiore
authors.affiliation: Center for Tobacco Research and Intervention, Department of Medicine, University of Wisconsin-Madison, 1930 Monroe St, Suite 200, Madison, WI 53711, USA; Department of Family Medicine, University of Wisconsin-Madison, 1930 Monroe St, Suite 200, Madison, WI 53711, USA.
authors.forename: Timothy B
authors.initials: TB
authors.lastname: Baker
authors.affiliation: Department of Kinesiology, University of Wisconsin-Madison, 2057 Gymnasium-Natatorium, 2000 Observatory Dr, Madison, WI 53706, USA.
authors.forename: Lisa H
authors.initials: LH
authors.lastname: Colbert
mesh_terms: D000328:Adult; D015444:Exercise; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012907:Smoking / Q000188:drug therapy / Q000503:physiopathology*; D016540:Smoking Cessation / Q000379:methods*; D013997:Time Factors; D015430:Weight Gain / Q000502:physiology*
keywords: Obesity; Physical activity; Smoking cessation; Walking; Weight gain
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