Relationship between objective measures of physical activity and weather: a longitudinal study
2006

Impact of Weather on Physical Activity

Sample size: 203 publication 10 minutes Evidence: moderate

Author Information

Author(s): Chan Catherine B, Ryan Daniel AJ, Tudor-Locke Catrine

Primary Institution: University of Prince Edward Island

Hypothesis

Does weather affect the daily physical activity of adults?

Conclusion

Weather had modest effects on the physical activity of participants in an intervention to increase their activity.

Supporting Evidence

  • Weather-related variables significantly impacted daily steps taken by participants.
  • An increase in temperature of 10°C resulted in a 2.9% increase in steps/day.
  • Rainfall of 14 mm decreased daily steps by approximately 830 steps for an average individual.

Takeaway

Weather can change how much people walk each day, but the effect is not very big.

Methodology

Participants' steps were measured using pedometers, and weather data were collected from Environment Canada for analysis.

Potential Biases

Participants were self-selected and may have been more motivated than the general population.

Limitations

Participants were from two different intervention arms, which may have introduced seasonal confounding.

Participant Demographics

203 adults (25 males, 178 females) with an average age of 44.1 years and an average BMI of 29.1 kg/m2.

Statistical Information

P-Value

0.0029

Confidence Interval

95% CI: 21.0%, 30.4%

Statistical Significance

p<0.05

Digital Object Identifier (DOI)

10.1186/1479-5868-3-21

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