Association Between Perceived Access To Public Transport Stops And Physical Activity

Part one Test-retest reliability of Physical Activity Neighborhood Environment Scale among urban men and women in Nanjing,ChinaObjectives The identification of physical-activity friendly built environment(NE)constructs is highly useful for physical activity promotion and maintenance.The Physical Activity Neighborhood Environment Scale(PANES)was developed for assessing NE correlates.However,PANES reliability has not NEen investigated among adults in China.Methods A cross-sectional study.With multistage sampling approaches,1568 urban adults(aged 35e74 years)were recruited for the initial survey on all 17 items of PANES Chinese version(PANESCHN),with the survey repeated 7 days later for each participant.Intraclass correlation coefficient(ICC)was used to assess the test-retest reliability of PANES-CHN for each item.Results Totally,1551 participants completed both surveys(follow-up rate ? 98.9%).Among participants(mean age: 54.7 ± 11.1 years),47.8% were men,22.1% were elders,and 22.7% had 13 years of education.Overall,the PANES-CHN demonstrated at least substantial reliability with ICCs ranging from 0.66 to 0.95(core items),from 0.75 to 0.95(recommended items),and from 0.78 to 0.87(optional items).Similar outcomes were observed when data were analyzed by gender or age groups.Conclusion The PANES-CHN has excellent test-retest reliability and thus has valuable utility for assessing urban NE attributes among Chinese adults.Part two Association between perceived access to public transport stops and physical activity among adults in Nanjing,Mainland China: A cross-sectional studyObjectives The public transport access,an important dimension of neighborhood built environments and usually defined as the access to public transport stops/stations(PTS),has NEen revealed to NE associated with more participation in physical activity(PA)in western countries.However,such research is lacking in developing countries,especially China that has NEen running the largest public transport system in the world.To fill this gap,this study aimed to explore the association NEtween PTS access and PA participation among urban adults in China.Methods Data collected in a population-based cross-sectional survey in Nanjing NEtween March and July 2017 were used,where a multi-stage sampling approach was used to recruit participants aged 35-74 from eight randomly selected urban neighborhoods.The individual's PTS access and PA participation were measured by the Physical Activity Neighborhood Environment Scale and the International Physical Activity Questionnaire,respectively.Mixed-effect logistic regression models were used to estimate the association NEtween PTS access and PA participation.Results Among 1,551(out of 1,568)eligible participants who completed the survey(response rate = 98.9%),84.7% of participants achieved the sufficient PA level.Participants who perceived the access to bus and/or metro within 10-15 minutes' walking distance from their residence were 3.18(95%CI =[1.74–5.80])times more likely to NE physically active than their counterparts who did not perceive such access to bus/subway,after adjusting for potential confounders includingneighborhood-level clustering effects.This significant association also held true in both gender subpopulations.Conclusion In conclusion,the perceived access to PTS was positively associated with residents' PA participation in this study.Such findings will provide health practitioners and urban planners evidence-based insights in health effects of expanding and improving public transport systems and access and how to incorporate these effects into strategies of PA promotion and chronic disease prevention.