This study aimed to investigate determinants of adolescent exercise behavior in a sample of healthy twins and their siblings. Body composition was measured, as well as physical fitness (standing jump, hand grip, sit-and reach flexibility, balance tests). Impulsiveness of the subjects was assessed by the delay discounting questionnaire. Regular voluntary exercise behavior was measured by a short lifestyle interview. While being equipped with a VU-AMS and Cosmed device, the subjects performed two submaximal exercise tests and one maximal exercise test. The VU University Ambulatory Monitoring System (VU-AMS) device records electrocardiogram (ECG) data and impedance cardiogram (ICG) data. The Cosmed device measures oxygen consumption (VO2) and carbon dioxide production (VCO2). VO2max (endurance capacity) was derived during the maximal exercise test. Before, during and after the exercise tests, subjects filled out the Activation-Deactivation Adjective Checklist (AD ACL), Feeling Scale (FS) and the Borg’s Rating of Perceived Exertion (RPE) at multiple time points. These questionnaires determined the subjects’ affective response to exercise. To determine zygosity, DNA was collected through buccal swabs.

Subject age
  • 16.0 - 18.0 years
Time span From 2012-01-01 to 2014-01-01
Geographic location NL
Eco J. C. de Geus
Vrije Universiteit Amsterdam
Meike Bartels
Vrije Universiteit Amsterdam
Nienke M. Schutte
Vrije Universiteit Amsterdam
Ineke Nederend
Vrije Universiteit Amsterdam
Funding information
National Institute of Diabetes and Digestive and Kidney Diseases
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