哮喘联盟

   摘要
   介绍：运动作为一种防止或降低戒烟后体重增加的方式受到关注。然而，尝试戒烟后的体重改变如何影响运动和戒烟之间的关系鲜为人知。本研究评估运动与戒烟的相关性以及戒烟后运动的初期改变是否能通过减轻体重增加来促进戒烟。
   方法：342例正在接受戒烟治疗的关注体重的女性吸烟者提供了戒烟的生化验证，报告每周运动情况，分别于治疗开始后1个月、3个月、6个月称取体重。运用生存分析确定在基线时参与不同水平运动女性的恢复吸烟的风险和时间。运用中介分析检查运动初期变化对长期戒烟的影响是否是由体重改变所引起的。所有分析的相关协变量都已校正。
   结果：基线时运动水平高的女性吸烟者相比运动较少的女性吸烟者复吸可能性更低，且复吸更缓慢。体重改变不能调节运动和戒烟之间的关系。
   结论：包含运动的戒烟干预方式可能需要制定更长持续时间或者更大强度的运动方案以产生有益的戒烟结果，特别是针对久坐不动的吸烟者。鉴于体重改变不能调节运动和戒烟之间的关系，这可能涉及其他中介过程。

 

（刘国梁 审校）
Nicotine Tob Res. 2014 Dec 26. pii: ntu284. [Epub ahead of print]

 

Change in Body Weight Does not Mediate the Relationship Between Exercise and Smoking Cessation Among Weight-Concerned Women Smokers.
 

Emery RL1, Levine MD2, Cheng Y3, Marcus MD2.
 

Abstract
INTRODUCTION: Exercise has received attention as a method to prevent or reduce postcessation weight gain. However, little is known about how weight changes following quit attempts contribute to the relationship between exercise and smoking cessation. The present study assessed how exercise relates to cessation and whether initial changes in exercise after quitting smoking promote cessation through attenuated weight gain.
METHODS: Weight-concerned women smokers (N = 342) receiving cessation treatment provided biochemical validation of cessation, reported weekly exercise activities, and were weighed at 1, 3, and 6 months following treatment initiation. Survival analyses were used to determine time to and risk of relapse among women who reported engaging in varied levels of exercise at baseline. A mediation analysis was used to examine whether the effect of initial changes in exercise on longer-term cessation was driven by change in weight. All analyses were adjusted for relevant covariates.
RESULTS: Women smokers who reported high levels of exercise at baseline were less likely to relapse and returned to smoking more gradually than did women who reported low levels of exercise. Change in weight did not mediate the relationship between exercise and cessation.
CONCLUSIONS: Cessation interventions utilizing an exercise component may have to develop exercise regimens of either higher duration or greater intensity to produce beneficial cessation outcomes, particularly when targeting sedentary smokers. Given that change in weight did not mediate the relationship between exercise and cessation, it is likely that other mediational processes are involved.

Nicotine Tob Res. 2014 Dec 26. pii: ntu284. [Epub ahead of print]