Table 1 Overview of study variables from current data collection cycles, 2014–2015
Season | Measured variablesa | Collection modesb |
|---|---|---|
Autumn October and November 2014 | Time-stamped physical activity: moderate to vigorous (MVPA), light physical activity (LPA) | Accelerometry |
Time-stamped sedentary behaviour (SB) | Accelerometry | |
Weekday and weekend MVPA, LPA, and SB | Accelerometry | |
Sleep duration (in minutes) | Accelerometry | |
Time-stamped location and velocity | GPS data loggers | |
Self-reported location of activity | Log sheet | |
Weather (spatial synoptic classification system) | Environment Canada database | |
Body mass index (BMI) | Directly measured height and weight | |
Individual and family characteristics (e.g., socio-demographics, activities) | Questionnaire | |
School characteristics (general, physical activity facilitators) | Questionnaire | |
Winter January and February 2015 | Â | Â |
Spring April and May 2015 | Â | Â |
Summer July and August 2015 | Â | Â |