Investigation of Fat Oxidation During Moderate Versus Vigorous Intensity Exercise (FATOX)

March 5, 2019 updated by: Latvian Institute of Organic Synthesis

Investigation of Fat and Carbohydrate Oxidation During Moderate Versus Vigorous Intensity Exercise in Healthy Volunteers With Sedentary Lifestyle

Exercise is widely suggested as an important lifestyle change for weight loss, however, the optimal level of intensity moderate versus vigorous remains unclear. It is known that in athletes, during very high-intensity exercise, fat oxidation is decreased and energy is gained mainly from carbohydrate utilization. The aim of this study is to find an optimal workload based on fat oxidation rate during exercise in volunteers with a sedentary lifestyle.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

It is planned to recruit 12 healthy volunteers with a sedentary lifestyle in the study group. Since different regimens (fed, fasted and moderate versus vigorous) will be compared in the same subjects, no control group is necessary. Subjects will perform a cycling test with 5 min incremental intensity exercise and 1 h cycling test exercising at a moderate-intensity (load will be selected after the incremental intensity exercise). The expiration of carbon dioxide (CO2) and consumption of oxygen (O2) will be measured, to determine the total fatty acid and carbohydrate oxidation during cycling. Concomitantly, it is planned to measure blood lactate and glucose concentrations during exercise experiments as well as a wide range of blood biochemistry parameters before and after exercise.

The investigators expect to find optimal conditions for the sedentary population for burning of fat, which is the major source of energy during moderate-intensity exercise. Measurements of the fat and carbohydrate oxidation in healthy volunteers with a sedentary lifestyle will contribute to the understanding of exercise regimens for the most effective fat oxidation.

Study Type

Interventional

Enrollment (Actual)

12

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

  • Latvia
      • Riga, Latvia, LV-1004
        • Latvian University

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

20 years to 55 years (Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Healthy
  • Sedentary lifestyle
  • BMI 20 - 30 kg/m2
  • Be able to attend the laboratory and willing to participate in necessary protocols
  • Be willing to undertake the duration of the exercise protocol (3 x 1 hour)
  • Have the capacity and willingness to provide informed consent (oral and written)

Exclusion Criteria:

  • athletes
  • Individuals with chronic cardiovascular disease such as hypertension, valve disease, coronary artery disease, cardiac conduction abnormalities, etc.
  • History of pneumothorax or chronic lung disease such as asthma, COPD, bronchiectasis
  • Active Smokers
  • Pregnant women

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
Subjects will perform a cycling tests
Other: Exercise
Subjects will perform a cycling test with 5 min incremental intensity exercise and 1 h cycling test exercising at a moderate-intensity (load will be selected in incremental intensity exercise).

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Optimal workload
Time Frame: 30 min accelerated load cycling exercise
The exercise workload (W) for optimal fat burning during exercise
30 min accelerated load cycling exercise
Heart rate change
Time Frame: 30 min accelerated load cycling exercise and 60 min optimal intensity cycling exercise
Change in heart rate (BPM) from rest to the optimal workload
30 min accelerated load cycling exercise and 60 min optimal intensity cycling exercise

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Influence of fed and fasted state
Time Frame: 30 min accelerated load cycling exercise
The influence of fed and fasted state on maximal whole body fat oxidation rate during exercise
30 min accelerated load cycling exercise

Collaborators and Investigators

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

Sponsor

Latvian Institute of Organic Synthesis

Collaborators

Riga East University Hospital
University of Latvia
Riga Stradins University

Investigators

  • Principal Investigator: Ilze Konrade, Riga East University Hospital

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 (Actual)

June 18, 2018

Primary Completion (Actual)

August 15, 2018

Study Completion (Actual)

August 30, 2018

Study Registration Dates

First Submitted

June 22, 2018

First Submitted That Met QC Criteria

March 5, 2019

First Posted (Actual)

March 6, 2019

Study Record Updates

Last Update Posted (Actual)

March 6, 2019

Last Update Submitted That Met QC Criteria

March 5, 2019

Last Verified

March 1, 2019

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • Exercise 2018-1

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

No

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

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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