NCT03568773

Influence of Genetic and Physiological in Weight Loss

Influence of Polymorphysms in the Fto and Ppar Gen Genes, Systemic Inflammation and Oxidative Stress in the Magnitude of Weight Loss Induced by Intermittent or Moderate Continuous High Intensity Training Programs

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 57 (estimated)
• Sponsor: Federal University of Paraíba · Academic / Other
• Sex: All
• Age: 20 Years – 45 Years
• Healthy volunteers: Accepted

Summary

The study focuses on the influence of polymorphism in the FTO genes rs9939609 and PPARᵧ Pro12Ala, oxidative stress and systemic inflammation on changes in body composition and rest metabolism induced by HIIT and continuous aerobic programs in obese or overweight individuals.

Detailed description

Although the positive effects of continuous aerobic training are already well documented in the literature on health aspects. The weight loss induced by physical training is still very discrete when compared to other antiobesity means. Studies demonstrate an important variability in responses to physical exercise, indicating that individuals respond more or less to weight loss. Among these aspects, the factors that may influence exercise-induced weight loss have not yet been elucidated. Thus, the objective of the study is to analyze the influence of polymorphism in the genes FTO rs9939609 and PPARᵧ Pro12Ala, oxidative stress and systemic inflammation on changes in body composition and rest metabolism induced by continuous and continuous aerobic programs. Healthy individuals with overweight and / or obesity, aged 20-45 years, were randomly assigned to three groups: Continuous Aerobic (AC), Intermittent High Intensity Training (HIIT) and Control Group (CG). Groups (AC) and (HIIT) engaged in a 12-week program. Before the start of the program, at the sixth week and 48 hours after the intervention, they performed blood collections, ergospirometry, dual X-ray densitometry (DEXA), nutritional assessments. In addition, collection of buccal mucosa was performed for genotyping of polymorphisms studied. Initial differences between the groups, as well as between the dependent variables studied will be assessed using the two-way ANOVA test or its non-parametric equivalent. Correlation and regression tests will be performed to verify the influence of the independent variables and the magnitude of the exercise-induced weight loss, according to the normality of the data or differences between the standard deviations. The hypothesis tested is that genetic and physiological factors influence the weight loss independent of the training modality.

Conditions

• Overweight and Obesity
• Chronic Disease

Interventions

Type	Name	Description
OTHER	High-intensity interval training	HIIT training is being conducted on a three-day weekly frequency on a stationary bike. The protocol consisted of two weeks of adaptation with 12 weeks of training that alternated between sprints ranging from 30 s to 60 s (\> 95% VO2max), and active recovery ranging from 180 s to 120 s (30 W on the bicycle).
OTHER	Aerobic exercise moderate intensity	The aerobic training is performed in a walking or running mode, with three weeks of adaptation (2x / wk - 20 to 30 minutes / session, \<threshold 1) and 12 weeks of training (3 to 5x / wk - 40 to 60 minutes / session, with prescribed intensities between the anaerobic threshold - L1 and the respiratory compensation point - L2).
OTHER	Control Group	The control group is participating in lengthening classes to increase the adherence and control of the influencing variables. Classes are being held once a week for 60 minutes.

Timeline

• Start date: 2016-03-10
• Primary completion: 2018-10-12
• Completion: 2018-11-15
• First posted: 2018-06-26
• Last updated: 2020-07-31