Inter Individual Variation in Weight Loss Response to Exercise

February 5, 2015 updated by: Norwegian University of Science and Technology

Identification and Characterization of Individual Variability in Exercise-induced Weight Loss: Biological and Behavioral Markers of Success.

The identification and characterization of individuals who vary in their response to exercise-induced weight loss is important. Weight loss in response to exercise is variable and it remains unknown who will succeed, why, and more importantly how to improve weight loss efficacy.

This study will examine changes in behavioural, metabolic, physiological and biochemical variables in response to a 12 week supervised exercise programme and evaluate their association with weight loss in overweight and obese sedentary individuals.

Our hypothesis is that changes in the plasma levels of appetite related hormones undermine the inter individual variation in weight loss in response to exercise.

This study will improve the understanding of variability to exercise-induced weight loss and allow more individually tailored and appropriate strategies for weight management programmes.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Purpose - To identify predictors of weight loss in overweigh/obese volunteers following a 12 week supervised exercise programme, and to characterise the variability in weight loss response.

Method - Longitudinal study aiming to identify predictors of weight loss in response to a 12-week exercise programme in healthy overweight/obese volunteers.

Subjective and objective measures of appetite, cardiovascular fitness, anthropometry, body composition, resting metabolic rate (RMR), fat and carbohydrate oxidation in the fasting state will be measured at baseline, before participants enroll for the study and after the exercise intervention.

The preload/test-meal paradigm (using a high and low-energy preload: HEP vs LEP) will be used to assess short-term appetite control before and after the exercise intervention following a randomized single-blinded crossover design. Moreover, the long-term effects of exercise on cytokine plasma levels and fasting and postprandial levels of appetite related hormones/metabolites will also be assessed at baseline and end of the study. Participants will act as their own controls throughout the study.

Study Type

Interventional

Enrollment (Actual)

22

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Norway
      • Trondheim, Norway, 7030
        • Norwegian University of Science and Technology

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 60 years (Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • 25<BMI<35 Kg/m2
  • weight stable on the last three months (<2kg)
  • not currently dieting to lose weight
  • with an inactive lifestyle (not engaged in strenuous work or in regular brisk leisure time exercise more than once a week or in light exercise for more than 20 minutes/day in more than 3 times/week)

Exclusion Criteria:

  • History of endocrine/cardiovascular/pulmonary/kidney disease, anaemia, gout, depression or other psychological disorders
  • Eating disorders
  • Drug or alcohol abuse within the last two years
  • Current medication known to affect appetite or induce weight loss.
  • Those with a planned surgery during the study period or participating in another research study will also not be accepted to take part in this study

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Basic Science
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: exercise
Behavioral: Exercise
12-week supervised exercise programme (5 times /week at 75% maximal Heart Rate)

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Changes in fasting and postprandial plasma levels of appetite related hormones
Time Frame: Baseline and after a 12 week exercise intervention
Baseline and after a 12 week exercise intervention

Secondary Outcome Measures

Outcome Measure
Time Frame
Changes in body weight and body composition
Time Frame: Baseline and after a 12-week exercise intervention
Baseline and after a 12-week exercise intervention

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Norwegian University of Science and Technology

Collaborators

Fundação para a Ciência e a Tecnologia

Investigators

  • Principal Investigator: Catia Martins, BSc, MSc, PhD, Norwegian University of Science and Technology

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

April 1, 2008

Primary Completion (Actual)

February 1, 2009

Study Completion (Actual)

December 1, 2009

Study Registration Dates

First Submitted

October 15, 2008

First Submitted That Met QC Criteria

October 15, 2008

First Posted (Estimate)

October 16, 2008

Study Record Updates

Last Update Posted (Estimate)

February 6, 2015

Last Update Submitted That Met QC Criteria

February 5, 2015

Last Verified

February 1, 2015

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 18926

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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