Department of Pediatrics and Child Health, Max Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB R3E 3P4, Canada.
Diabetes Research Envisioned and Accomplished in Manitoba (DREAM) Research Theme at the Children's Hospital Research Institute of Manitoba, Winnipeg, MB R3E 3P4, Canada.
Int J Environ Res Public Health. 2019 Sep 27;16(19):3627. doi: 10.3390/ijerph16193627.
: Very few experimental studies exist describing the effect of changes to the built environment and opportunities for physical activity (PA). We examined the impact of an urban trail created on a frozen waterway on visitor counts and PA levels. : We studied a natural experiment in Winnipeg, Manitoba, Canada that included 374,204 and 237,362 trail users during the 2017/2018 and 2018/2019 winter seasons. The intervention was a 10 km frozen waterway trail lasting 8-10 weeks. The comparator conditions were the time periods immediately before and after the intervention when ~10 kms of land-based trails were accessible to the public. A convenience sample of 466 participants provided directly measured PA while on the frozen waterway. : Most trail users were 35 years or older (73%), Caucasian (77%), and had an annual household income >$50,000 (61%). Mean daily trail network visits increased ~four-fold when the frozen waterway was open (median and interquartile range (IQR) = 710 (239-1839) vs. 2897 (1360-5583) visits/day, < 0.001), compared with when it was closed. Users achieved medians of 3852 steps (IQR: 2574-5496 steps) and 23 min (IQR: 13-37 min) of moderate to vigorous intensity PA (MVPA) per visit, while 37% of users achieved ≥30 min of MVPA. : A winter-specific urban trail network on a frozen waterway substantially increased visits to an existing urban trail network and was associated with a meaningful dose of MVPA. Walking on water could nudge populations living in cold climates towards more activity during winter months.
: 很少有实验研究描述了建筑环境的变化和体育活动（PA）机会对健康的影响。我们研究了在加拿大马尼托巴省温尼伯市创建的一条城市小径对游客数量和 PA 水平的影响。: 我们在温尼伯市进行了一项自然实验研究，该研究包括 2017/2018 年和 2018/2019 年冬季的 374204 名和 237362 名小径使用者。干预措施是一条长达 10 公里的冰冻水道小径，持续 8-10 周。对照组条件是干预前后的时间段，当时公众可以使用约 10 公里的陆基小径。466 名参与者的便利样本在冰冻水道上提供了直接测量的 PA。: 大多数小径使用者年龄在 35 岁或以上（73%），白种人（77%），家庭年收入> 50,000 美元（61%）。当冰冻水道开放时，每日平均小径网络访问量增加了约四倍（中位数和四分位距（IQR）= 710（239-1839）与 2897（1360-5583）访问/天，<0.001），与关闭时相比。使用者每次访问时平均达到 3852 步（IQR：2574-5496 步）和 23 分钟（IQR：13-37 分钟）的中等到剧烈强度的 PA（MVPA），而 37%的使用者达到了≥30 分钟的 MVPA。: 在冰冻的水道上创建一个特定于冬季的城市小径网络大大增加了对现有城市小径网络的访问量，并与有意义的中等到剧烈强度 PA（MVPA）剂量相关。在寒冷的月份，在水上行走可以促使生活在寒冷气候中的人们更加活跃。
