Bellettiere John, Liles Sandy, BenPorat Yael, Bliss Natasha, Hughes Suzanne C, Bishop Brent, Robusto Kristi, Hovell Melbourne F
Center for Behavioral Epidemiology and Community Health, Graduate School of Public Health, San Diego State University, 9245 Sky Park Court, Suite 230, San Diego, CA, 92123, USA.
J Prim Prev. 2017 Dec;38(6):597-611. doi: 10.1007/s10935-017-0491-6.
Several studies have demonstrated that point-of-choice prompts modestly increase stair use (i.e., incidental physical activity) in many public places, but evidence of effectiveness in airport settings is weak. Furthermore, evaluating the effects of past physical activity on stair use and on point-of-choice prompts to increase stair use is lacking. The purpose of this study was to evaluate the influence of sign prompts and participant factors including past physical activity on stair ascent in an airport setting. We used a quasi-experimental design, systematically introducing and removing sign prompts daily across 22 days at the San Diego International Airport. Intercept interviewers recruited stair and escalator ascenders (N = 1091; 33.0% interview refusal rate) of the only stairs/escalators providing access to Terminal 1 from the parking lot. A 13-item questionnaire about demographics, physical activity, health behavior, and contextual factors provided data not available in nearly all other stair use studies. We examined the effects of signs and self-reported covariates using multivariable logistic regression analyses, and tested whether physical activity and other covariates modified the intervention effect. Adjusting for all significant covariates, prompts increased the odds of stair use (odds ratio 3.67; p < .001). Past participation in vigorous physical activity increased the odds of stair use by 1.62 (p = 0.001). None of the covariates moderated the intervention effect. In conclusion, vigorous physical activity and correlates of physical activity were related to stair use in expected directions, but did not modify the effect of the intervention. This indicates that the effects of point-of-choice prompts are independent of past physical activity, making them effective interventions for active adults and the higher risk population of inactive adults. Signs can prompt stair use in an airport setting and might be employed at most public stairs to increase rates of incidental physical activity and contribute to overall improvements in population health.
多项研究表明，选择点提示在许多公共场所能适度增加楼梯使用率（即偶然的身体活动），但在机场环境中的有效性证据不足。此外，关于过去的身体活动对楼梯使用以及对增加楼梯使用的选择点提示的影响的评估也很缺乏。本研究的目的是评估在机场环境中，标志提示和包括过去身体活动在内的参与者因素对楼梯上行的影响。我们采用了准实验设计，在圣地亚哥国际机场的22天内每天系统地引入和移除标志提示。拦截式访谈员招募了从停车场进入1号航站楼的唯一楼梯/自动扶梯的楼梯和自动扶梯上行者（N = 1091；访谈拒绝率为33.0%）。一份关于人口统计学、身体活动、健康行为和背景因素的13项问卷提供了几乎所有其他楼梯使用研究中未有的数据。我们使用多变量逻辑回归分析来检验标志和自我报告的协变量的影响，并测试身体活动和其他协变量是否改变了干预效果。在对所有显著协变量进行调整后，提示增加了使用楼梯的几率（优势比3.67；p <.001）。过去参与剧烈身体活动使使用楼梯的几率增加了1.62（p = 0.001）。没有一个协变量调节干预效果。总之，剧烈身体活动和身体活动的相关因素在预期方向上与楼梯使用有关，但没有改变干预效果。这表明选择点提示的效果独立于过去的身体活动，使其成为活跃成年人和不活跃成年人这一高风险人群有效的干预措施。标志可以在机场环境中促使人们使用楼梯，并且可能应用于大多数公共楼梯，以提高偶然身体活动的比率，并有助于总体改善人群健康。
