Influence of Muscle Strength on the Energy Cost of Walking in Obese Subjects

Summary

The purpose of this study is to evaluate the efficacy of 2 physical exercise training programs, with a supplementation in fruits and vegetables, on energy cost of walking. 60 subjects will be randomized into 2 groups. The first program will be consist of an interval strength training for 30 min on bicycle ergometer (which include strengthening exercises in an high intensity interval training). The second program will be conducted at a relatively low intensity of effort, corresponding to 50% of oxygen uptake (VO2) peak measured by indirect calorimetry. All subjects will receive a free supplement of 5 fruits and vegetables per day during all the intervention. The intervention will last 9 months in total : 5 month at the hospital fallow by 4 month at home.

Conditions

• Obesity

Interventions

BEHAVIORAL

30 minutes of high intensity training

This group will carry out a 5-min warm-up period on bicycle ergometer at an intensity corresponding to 50% of Vo2max before performed eight times the intermittent training exercise as follows: * 30 sec at 120% of Vo2max, * 1 min at 50% of Vo2max, * 15 sec at 30-40 revolutions per minute of strength training at 100% of the maximal anaerobic power, which will be first determined by means of a force-velocity test on a Monark ergometer, * 1 min at 50% of Vo2max. The training session will be terminated by a 3-min cool-down period at 40% of Vo2max. Training three times per week for 5 months under supervision of an exercise physiologist. Initial nutritional education session at the beginning of the study Questionnaires on training experience during the 5 months training period (Exercise difficulties, pain...). Dietary Supplement: supplementation in fruits and vegetables (5 per day) during all the study.

BEHAVIORAL

40 of an endurance training

The moderate-intensity continuous exercise group will carry out a 40-min session of continuous cycling at a moderate intensity (50 % of Vo2max). Training three times per week for 5 months under supervision of an exercise physiologist. Initial nutritional education session at the beginning of the study Questionnaires on training experience during the 5 months training period (Exercise difficulties, pain...). Dietary Supplement: supplementation in fruits and vegetables (5 per day) during all the study.

Sponsors & Collaborators

• Universite de La Reunion

  collaborator OTHER

• Centre Hospitalier Universitaire de la Réunion

  lead OTHER

Principal Investigators

• Stephane Schneebeli, PI · CHU de La Réunion

Study Design

Allocation

RANDOMIZED

Purpose

PREVENTION

Masking

NONE

Model

PARALLEL

Eligibility

Min Age

18 Years

Max Age

40 Years

Sex

ALL

Healthy Volunteers

No

Timeline & Regulatory

Start

2013-02-28

Primary Completion

2013-12-31

Completion

2013-12-31

Countries

• France

Study Locations