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Promotion of a physically active lifestyle among inactive adolescents and young adults by means of an activity monitor and individually tailored advice using internet technology
DOI 10.1186/ISRCTN93896459
ClinicalTrials.gov identifier
EudraCT number
Public title Promotion of a physically active lifestyle among inactive adolescents and young adults by means of an activity monitor and individually tailored advice using internet technology
Scientific title
Acronym The PAM study
Serial number at source 2100.0093
Study hypothesis It is hypothesised that the intervention will result in a difference between the intervention and the control group of 20% in the proportion of subjects that are defined as physically active.
Lay summary Not provided at time of registration
Ethics approval Not provided at time of registration
Study design Randomised controlled trial
Countries of recruitment Netherlands
Disease/condition/study domain Physical inactivity
Participants - inclusion criteria Inactive adolescent boys and girls aged 12-18 years recruited through high schools and inactive young adults aged 25-35 years recruited through companies.
Participants - exclusion criteria Does not match inclusion criteria
Anticipated start date 01/01/2003
Anticipated end date 30/06/2006
Status of trial Completed
Patient information material
Target number of participants 85 adolescents and 101 young adults
Interventions Participants in the intervention group receive an activity monitor (PAM) and access to the personal COACH website on the Internet for three months. The PAM is an accelerometer worn on the waist continuously displaying the amount of physical activity accumulated per day and per week. Its memory can be downloaded to an expert system on the Internet 'the personal COACH'. The COACH shows the accumulated activity data and interactively formulates activity goals and advice based on the actual activity level and personal characteristics and preferences.

Control intervention: General written physical activity advice.
Primary outcome measure(s) All physical activity at work, school, during leisure, sports, and active transportation as assessed by a questionnaire.
Secondary outcome measure(s) Body weight and height, waist, and hip circumference, four skinfolds, aerobic fitness, measured by the 20 m shuttle-run test (adolescents); and the Chester step-test (adults); determinants of physical activity, ie attitude, social influences and self efficacy and barriers according to the ASE-model; Empowerment; Quality of life.
Sources of funding Netherlands Organisation for Health Research and Development (ZonMw) (Netherlands), 2100.0093
Trial website
Publications 1. 2005 protocol in http://www.ncbi.nlm.nih.gov/pubmed/16356182
2. 2009 results in http://www.ncbi.nlm.nih.gov/pubmed/19674956
3. 2010 results in http://www.ncbi.nlm.nih.gov/pubmed/20380847
Contact name Dr  Marijke Jeanette Maidy  Chin A Paw
  Address van der Boechorststraat 7
  City/town Amsterdam
  Zip/Postcode 1081 BT
  Country Netherlands
  Tel +31 (0)20 4448203
  Fax +31 (0)20 4448387
  Email m.chinapaw@vumc.nl
Sponsor Netherlands Organisation for Health Research and Development (ZonMw) (Netherlands)
  Address Laan van Nieuw Oost Indie 334
PO Box 93245
  City/town The Hague
  Zip/Postcode 2509 AE
  Country Netherlands
  Tel +31 (0)70 3495111
  Fax +31 (0)70 3495100
  Email info@zonmw.nl
Date applied 25/05/2005
Last edited 12/04/2012
Date ISRCTN assigned 04/07/2005
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