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The focus on strength programme: an innovative strength-based physical activity intervention to improve body composition and to stimulate physical activity in adolescents (12-18yaers) with overweight or obesity


- candidate number23931
- NTR NumberNTR5676
- ISRCTNISRCTN no longer applicable
- Date ISRCTN created
- date ISRCTN requested
- Date Registered NTR8-feb-2016
- Secondary IDsZonMw525001004 
- Public TitleThe focus on strength programme: an innovative strength-based physical activity intervention to improve body composition and to stimulate physical activity in adolescents (12-18yaers) with overweight or obesity
- Scientific TitleThe focus on strength programme: an innovative strength-based physical activity intervention to improve body composition and to stimulate physical activity in adolescents (12-18yaers) with overweight or obesity
- ACRONYM
- hypothesisa one year combined strength- and motivational program for high schools improve body composition and motivation in overweight and obese youngsters.
- Healt Condition(s) or Problem(s) studiedAdolescents, Overweight, Obesity
- Inclusion criteria11-13 year old youngsters (1st grade high school students) in Dutch high schools
- Exclusion criteriastudents who are not able to engage in physical activity
- mec approval receivedyes
- multicenter trialyes
- randomisedyes
- masking/blindingNone
- controlActive
- groupParallel
- Type2 or more arms, randomized
- Studytypeintervention
- planned startdate 1-jan-2015
- planned closingdate1-jan-2017
- Target number of participants1000
- Interventions30% increase in absolute strength exercises in physical education classes, once per month a motivational lesson given by a mentor, and for the first five months an additional online motivational lesson (1x/month)
- Primary outcomebody composition (fat- and fat free mass, measured by deuterium dilution and skinfold measurements)
- Secondary outcomedaily physical activity, social cognitive determinants (including motivations), BMIz-scores, strength
- TimepointsT0-measures before March 2015, T1-measures after March 2016.
- Trial web sitehttp://www.krachtvankracht.nl
- statusopen: patient inclusion
- CONTACT FOR PUBLIC QUERIES Gill ten Hoor
- CONTACT for SCIENTIFIC QUERIES Gill ten Hoor
- Sponsor/Initiator Maastricht University Medical Center (MUMC+)
- Funding
(Source(s) of Monetary or Material Support)
ZON-MW, The Netherlands Organization for Health Research and Development
- PublicationsTen Hoor, G.A., Plasqui, G., Schols, A. M., & Kok, G. (2014). Combating adolescent obesity: An integrated physiological and psychological perspective. Current Opinion in Clinical Nutrition & Metabolic Care, 17(6), 521-524.

Ten Hoor , G.A., Sleddens, E. F., Kremers, S. P., Schols, A. M., Kok, G., & Plasqui, G. (2015). Aerobic and strength exercises for youngsters aged 12 to 15: what do parents think?. BMC public health, 15(1), 1.

Ten Hoor, G. A., Plasqui, G., Ruiter, R. A., Kremers, S. P., Rutten, G. M., Schols, A. M., & Kok, G. (2016). A new direction in Psychology and Health: Resistance exercise training for obese children and adolescents. Psychology & health, 31(1), 1-8.

Ten Hoor, G.A., Musch K, Meijer K, Plasqui G (in press) Test-retest reproducibility of the back-leg-chest strength measurements. Isokinetics and Exercise Science.
- Brief summaryThis intervention will focus on first year students in 12 preparatory secondary vocational education (11-13 years of age) as target population, and their teachers as implementers. The overall programme objective of this intervention is to improve body composition of 11-13 year old students. Secondary outcomes are: improved strength, and (increased motivation to be more physically active after school.
In this intervention, students increase the amount of strength exercises during their physical education lessons with 30%. To help the students through a process of self-awareness related to many aspects of physical activity, also a motivational intervention is added to the programme. The control group continues with their usual curriculum, without extra emphasis on strength exercises in their PE classes or on physical activity motivation. No motivational lessons are given in the control group. After 12 months, students will be measured again in the post measures.
- Main changes (audit trail)
- RECORD8-feb-2016 - 31-mrt-2016


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