This is a secondary analysis of data collected fromparticipants in the
GameBike trial [1] where the participants were screened through the
Endocrinology Clinic at the Children's Hospital of Eastern Ontario
(CHEO; Ottawa, Ontario, Canada) to determine eligibility. Of the 30
overweight/obese 12–17 year old participants that were selected
(body mass index (BMI) above the 95th percentile for age and gender
according to the Center for Disease Control and Prevention's growth
chart data/available from http://www.cdc.gov/growthcharts), 4
dropped out prematurely due to a lack of interest and then 26 adolescents
completed the study (14 females and 12 males; 14.5 ± 1.8 years
old). The inclusion and exclusion criteria have been previously detailed
[1]. The screening and recruitment were done between May 2007 and
January 2009 and the last assessments were completed in March
2009. The protocol was approved by the Children's Hospital of Eastern
Ontario (CHEO) research ethics board. All the participants and their
legal guardians received information sheets and completed consent
forms.