Daylight saving time as a potential public health intervention: an observational study of evening daylight and objectively-measured physical activity among 23,000 children from 9 countries

  title={Daylight saving time as a potential public health intervention: an observational study of evening daylight and objectively-measured physical activity among 23,000 children from 9 countries},
  author={Anna Goodman and Angie S Page and Ashley R Cooper},
  journal={The International Journal of Behavioral Nutrition and Physical Activity},
  • A. GoodmanA. PageA. Cooper
  • Published 23 October 2014
  • Medicine
  • The International Journal of Behavioral Nutrition and Physical Activity
BackgroundIt has been proposed that introducing daylight saving measures could increase children’s physical activity, but there exists little research on this issue. This study therefore examined associations between time of sunset and activity levels, including using the bi-annual ‘changing of the clocks’ as a natural experiment.Methods23,188 children aged 5–16 years from 15 studies in nine countries were brought together in the International Children’s Accelerometry Database. 439 of these… 

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The author will discuss 2 strategies that he believes may help ensure comparability between studies and maximize the potential for data harmonization, thereby helping to capitalize on the growing body of accelerometer data describing children's physical behaviors.

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comparison of the levels and potential correlates of objectively measured sedentary time and physical activity among three-to-four-year-old

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Duration of GPS recording is positively associated with objectively measured physical activity and is sensitive to seasonal differences, while minute by minute patterning of GPS and physical activity data is feasible and may be a useful tool to investigate environmental influences on children's physical activity.

International children's accelerometry database (ICAD): Design and methods

Pooling raw accelerometer data and accompanying phenotypic data from a number of studies has the potential to create a more heterogeneous and potentially more representative sample, standardize and optimize the analytical methods used in the generation of outcome variables, and provide a means to study the causes of inter-study variability in physical activity.

The effect of season and weather on physical activity: a systematic review.

Objective measurement of levels and patterns of physical activity

A large majority of children are insufficiently active, according to current recommended levels for health, after adjustment for age, sex, season, maternal age and social class.

Moderate to vigorous physical activity and sedentary time and cardiometabolic risk factors in children and adolescents.

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More daylight, better health: why we shouldn’t be putting the clocks back this weekend

  • M. Hillman
  • Medicine
    BMJ : British Medical Journal
  • 2010
The government now aims to get far more of the inactive population walking or gardening regularly or, preferably, taking up more vigorous physical activity, such as sports, aerobics, or cycling (especially as a means of travel).

Sources of variation in habitual physical activity of children and adolescents: the European youth heart study

Boys were more physically active compared with girls, and maturity state was unrelated to physical activity in the 8–10‐year‐olds, whereas an inverse association was observed in the 14–16‐year-olds.

Seasonal variation in accelerometer-determined sedentary behaviour and physical activity in children: a review

There is sufficient evidence to support public health interventions aimed at increasing PA during winter in UK children and no conclusions can be drawn regarding the effect of season on children’s SB reflecting few studies of small sample size, lack of repeat measures, incomparable definitions of season and inconsistent accelerometers.

Calibration of two objective measures of physical activity for children

It is suggested that the two accelerometers can be used to distinguish differing levels of physical activity intensity as well as inactivity among children 5 to 8 years of age.