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J Phys Act Health. 2008;5 Suppl 1:S140-52.

Pedometer-determined physical activity levels of adolescents: differences by age, sex, time of week, and transportation mode to school.

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  • 1Centre for Physical Activity and Nutrition Research, Auckland University of Technology, Auckland, New Zealand.



Few studies have examined high school students' physical activity habits using objective measures. The purpose of this study was to describe pedometer-determined habitual physical activity levels of youth.


236 high school students (age 12-18 years) wore sealed pedometers for 5 consecutive days. Data were analyzed using generalizing estimating equations.


Mean steps/d (+/- SE) differed significantly by sex (males, 10,849 (+/- 381; females, 9652 (+/- 289), age (junior students [years 9-11], 11,079 (+/- 330; senior students [years 12 and 13], 9422 (+/- 334), time of week (weekday, 12,259 (+/- 287; weekend day, 8241 (+/- 329), and mode of transportation to and from school (walkers, 13,308 (+/- 483; car transit users, 10,986 (+/- 435). Only 14.5% of students achieved at least 10,000 steps on every day during the monitoring period.


Daily step counts differed substantially by age, sex, time of week, and transportation mode to school.

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