Clinical trial NCT02619461: The Acute Effect of Exercise on Appetite Appetite-regulating Hormones and Inflammation in Children
Official title: The Acute Effect of High Intensity Exercise on Appetite, Appetite-regulating Hormones, and Bio-markers of Inflammation and Stress in Lean and Obese Boys
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Obesity
Lead sponsor: University of Toronto
Sponsor class: OTHER
First posted: 2015-12-02
Enrollment: 22
Sex: MALE
Minimum age (years): 10
Maximum age (years): 18
Standard ages: CHILD
ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: CROSSOVER
Primary purpose: TREATMENT

Brief summary: This study describes the effect of acute high intensity exercise at 70% VO2peak on inflammation, stress, appetite hormones and appetite in lean and obese children and adolescents.

Detailed description: In summary, exercise does induce a variety of metabolic mechanisms on a central and peripheral level, related to appetite other than solely gut peptides. The literature points towards a rather loose coupling when it comes to high intensity exercise and the suppression of food intake, without a clear explanation of the cause of exercise induced anorexia. This study is aimed to investigate high-intensity exercise and its effects on appetite and satiety hormones, inflammation, stress and eating behaviors on appetite and food intake.

The objective of the current study is to investigate the factors contributing to exercise-induced anorexia in lean and obese children, and maximize its translation into post-exercise suppression of food intake and promotion of negative energy balance particularly in obese children. It is hypothesized that high-intensity exercise would promote a greater suppression of food intake through suppression of appetite ratings via physiological mechanisms depending on stress and inflammation rather than gut peptides.

Eligibility criteria: Inclusion Criteria:

* 11 normal weight and 11 obese boys will be recruited for the study. Lean and obese boys aged 10-18 years, born full-term and with a normal body weight at birth, will be included in the study

Exclusion Criteria:

* Dieters and individuals with lactose intolerance, allergies to milk and dairy products and gastrointestinal problems will be excluded from the study.

Primary outcomes:
measure: Appetite as assessed via visual analog scales
timeFrame: Timeperiod of 2 hours during each study intervention.
measure: Biomarkers of appetite
timeFrame: 4 timpoints during 2 hours during each study intervention.
measure: Biomarkers of Inflammation
timeFrame: 4 timpoints during 2 hours during each study intervention.
Secondary outcomes:
measure: Biomarkers of Stress
timeFrame: 4 timpoints during 2 hours during each study intervention.
Other outcomes:
Locations:
city: Toronto
country: Canada
facility: Department of Nutritional Sciences
state: Ontario
Study officials:
affiliation: University of Toronto
name: Harvey Anderson
role: PRINCIPAL_INVESTIGATOR
References:
citation: Hunschede S, El Khoury D, Antoine-Jonville S, Smith C, Thomas S, Anderson GH. Acute changes in substrate oxidation do not affect short-term food intake in healthy boys and men. Appl Physiol Nutr Metab. 2015 Feb;40(2):168-77. doi: 10.1139/apnm-2014-0188. Epub 2014 Oct 22.
citation: Tamam S, Bellissimo N, Patel BP, Thomas SG, Anderson GH. Overweight and obese boys reduce food intake in response to a glucose drink but fail to increase intake in response to exercise of short duration. Appl Physiol Nutr Metab. 2012 Jun;37(3):520-9. doi: 10.1139/h2012-038. Epub 2012 Apr 25.
citation: Bozinovski NC, Bellissimo N, Thomas SG, Pencharz PB, Goode RC, Anderson GH. The effect of duration of exercise at the ventilation threshold on subjective appetite and short-term food intake in 9 to 14 year old boys and girls. Int J Behav Nutr Phys Act. 2009 Oct 9;6:66. doi: 10.1186/1479-5868-6-66.
citation: Hunschede S, Kubant R, Akilen R, Thomas S, Anderson GH. Decreased Appetite after High-Intensity Exercise Correlates with Increased Plasma Interleukin-6 in Normal-Weight and Overweight/Obese Boys. Curr Dev Nutr. 2017 Feb 28;1(3):e000398. doi: 10.3945/cdn.116.000398. eCollection 2017 Mar.