Merom Dafna, Bauman Adrian, Vita Philip, Close Glenn
Epidemiology Unit, NSW Centre for Physical Activity and Health, University of New South Wales, Liverpool NSW 2170, Australia.
Prev Med. 2003 Feb;36(2):235-42. doi: 10.1016/s0091-7435(02)00025-7.
Few studies have evaluated environmental changes to promote physical activity. The impact of a local promotional campaign around a newly constructed Rail Trail in western Sydney, Australia, was assessed.
Pre and post-campaign telephone surveys were used. Adults 18-55 years of age were randomly sampled from an "inner" area, residents within < or =1.5 km of the Trail, and an "outer" area, bike-owners only, 1.5-5 km from the Trail. Objective concurrent monitoring of daily bike counts was carried out.
A cohort of 450 completed both interviews. A significant increase (+2.9%, McNemar P < 0.05) in unprompted Trail awareness was detected but post-campaign awareness was low (34%). Inner cyclists, males, and those recalling any baseline bike promotion messages were more likely to be aware of the Trail. Trail usage was higher among bike-owners than pedestrians (8.9 vs 3.3%, P = 0.014) and was moderated by proximity to the Trail. Inner cyclists increased mean cycling time by 0.19 h (SD = 1.5) while outer cyclists decreased cycling time (-0.24 h, SD = 1.6). Mean daily bike counts in the monitored areas increased significantly after the Trail launch (OR = 1.35, P = 0.0001, and OR = 1.23, P = 0.0004).
The campaign reached and influenced cyclists in the inner area. For further increase in Trail usage promotional and educational programs focusing on walking for inner residents are needed.
很少有研究评估促进身体活动的环境变化。本研究评估了澳大利亚悉尼西部一条新建铁路步道周边开展的地方宣传活动的影响。
采用活动前后的电话调查。从“内”区域（距离步道≤1.5公里的居民）和“外”区域（仅自行车所有者，距离步道1.5 - 5公里）随机抽取18 - 55岁的成年人。同时对每日自行车通行量进行客观监测。
450名参与者完成了两次访谈。发现自发的步道知晓率有显著提高（+2.9%，McNemar检验P < 0.05），但活动后的知晓率较低（34%）。在内区域的骑行者、男性以及那些回忆起任何基线自行车推广信息的人更有可能知晓这条步道。自行车所有者的步道使用率高于行人（8.9%对3.3%，P = 0.014），且受与步道距离的影响。内区域的骑行者平均骑行时间增加了0.19小时（标准差 = 1.5），而外区域的骑行者骑行时间减少了（-0.24小时，标准差 = 1.6）。步道开放后，监测区域的每日自行车通行量显著增加（比值比 = 1.35，P = 0.0001，以及比值比 = 1.23，P = 0.0004）。
该活动覆盖并影响了内区域的骑行者。为进一步提高步道使用率，需要针对内区域居民开展侧重于步行的推广和教育项目。
