Impact of meteorological variables on physical activity in a sub-tropical city: evidence from mobile app data
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AbstractBackground/Aim: Physical activity (PA) maintains health and well-being. Patterns and associations between meteorological variables and PA, however, have rarely been examined in subtropical climate contexts. The study objective was to assess the relationship between meteorological variables and objectively-assessed PA levels in the humid sub-tropical city of Hong Kong. Methods: Daily step counts from anonymised Hong Kong users of mobile app WeChat’s in-app function WeRun were collected from December 6, 2017 to November 30, 2018 and aggregated to produce daily mean step counts for the city. Daily meteorological and air pollutant data were obtained from the Hong Kong Observatory and Environmental Protection Department. Generalised additive models were used to examine the association of meteorological variables with daily mean step count, adjusting for air pollutants, months, day of- week, public holidays and typhoons. Results: The final study sample included a daily average of 419,849 persons and reported an average of 9,034 steps per day. Temperature and relative humidity demonstrated a highly significant inverse U-shaped relationship with daily mean step count, peaking at approximately 22-23°C and 60% relative humidity. Highly significant decreasing trends were also found for rainfall and wind speed. Conclusions: Weather variables were found associated with objectively-assessed PA levels in the humid subtropical city of Hong Kong. These findings suggest that higher temperatures and increased rainfall due to climate change may lead to a net decrease in PA levels.
All Author(s) ListJanice Y Ho, Emily YY Chan, William B Goggins, Phoenix KH Mo
Name of Conference31st Annual Conference of the International Society for Environmental Epidemiology
Start Date of Conference25/08/2019
End Date of Conference28/08/2019
Place of ConferenceUtrecht
Country/Region of ConferenceNetherlands
LanguagesEnglish-United States

Last updated on 2020-16-09 at 09:30