Effects of exercise intensity and nutrition advice on myocardial function in obese children and adolescents: A multicentre randomised controlled trial study protocol

Dias, Katrin A., Coombes, Jeff S., Green, Daniel J., Gomersall, Sjaan R., Keating, Shelley E., Tjonna, Arnt Erik, Hollekim-Strand, Siri Marte, Hosseini, Mansoureh Sadat, Ro, Torstein Baade, Haram, Margrete, Huuse, Else Marie, Davies, Peter S. W., Cain, Peter A., Leong, Gary M. and Ingul, Charlotte B. (2016) Effects of exercise intensity and nutrition advice on myocardial function in obese children and adolescents: A multicentre randomised controlled trial study protocol. BMJ Open, 6 4: . doi:10.1136/bmjopen-2015-010929


Author Dias, Katrin A.
Coombes, Jeff S.
Green, Daniel J.
Gomersall, Sjaan R.
Keating, Shelley E.
Tjonna, Arnt Erik
Hollekim-Strand, Siri Marte
Hosseini, Mansoureh Sadat
Ro, Torstein Baade
Haram, Margrete
Huuse, Else Marie
Davies, Peter S. W.
Cain, Peter A.
Leong, Gary M.
Ingul, Charlotte B.
Title Effects of exercise intensity and nutrition advice on myocardial function in obese children and adolescents: A multicentre randomised controlled trial study protocol
Journal name BMJ Open   Check publisher's open access policy
ISSN 2044-6055
Publication date 2016-03-10
Sub-type Article (original research)
DOI 10.1136/bmjopen-2015-010929
Open Access Status DOI
Volume 6
Issue 4
Total pages 13
Place of publication London, United Kingdom
Publisher B M J Group
Collection year 2017
Language eng
Formatted abstract
Introduction The prevalence of paediatric obesity is increasing, and with it, lifestyle-related diseases in children and adolescents. High-intensity interval training (HIIT) has recently been explored as an alternate to traditional moderate-intensity continuous training (MICT) in adults with chronic disease and has been shown to induce a rapid reversal of subclinical disease markers in obese children and adolescents. The primary aim of this study is to compare the effects of HIIT with MICT on myocardial function in obese children and adolescents.

Methods and analysis Multicentre randomised controlled trial of 100 obese children and adolescents in the cities of Trondheim (Norway) and Brisbane (Australia). The trial will examine the efficacy of HIIT to improve cardiometabolic outcomes in obese children and adolescents. Participants will be randomised to (1) HIIT and nutrition advice, (2) MICT and nutrition advice or (3) nutrition advice. Participants will partake in supervised exercise training and/or nutrition sessions for 3 months. Measurements for study end points will occur at baseline, 3 months (postintervention) and 12 months (follow-up). The primary end point is myocardial function (peak systolic tissue velocity). Secondary end points include vascular function (flow-mediated dilation assessment), quantity of visceral and subcutaneous adipose tissue, myocardial structure and function, body composition, cardiorespiratory fitness, autonomic function, blood biochemistry, physical activity and nutrition. Lean, healthy children and adolescents will complete measurements for all study end points at one time point for comparative cross-sectional analyses.

Ethics and dissemination This randomised controlled trial will generate substantial information regarding the effects of exercise intensity on paediatric obesity, specifically the cardiometabolic health of this at-risk population. It is expected that communication of results will allow for the development of more effective evidence-based exercise prescription guidelines in this population while investigating the benefits of HIIT on subclinical markers of disease.

Trial registration number NCT01991106.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

 
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Created: Wed, 01 Jun 2016, 14:14:30 EST by Sandrine Ducrot on behalf of School of Human Movement and Nutrition Sciences