Light, Exercise Intensity and Mood in Overweight (LEXI-MO)

June 28, 2017 updated by: Arno Schmidt-Trucksäss, University of Basel
The purpose of this study is to determine if an exposure to light in the morning has a positive influence on self-chosen exercise intensity on a bicycle ergometer in overweight and obese patients.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

26

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

  • Switzerland
      • Basel, Switzerland, 4052
        • Departement of Sport, Exercise and Health

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 40 years (Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Body Mass Index 25 - 35 kg/m2

Exclusion Criteria:

  • Women who are pregnant or breast feeding,
  • Other clinically significant concomitant disease states (e.g., renal failure, hepatic dysfunction, cardiovascular disease, etc.),
  • Inability to follow the procedures of the study, e.g. due to language problems, psychological disorders, dementia, etc. of the participant
  • Previous enrolment into the current study
  • Participation in other studies in the last four weeks
  • Systolic blood pressure > 170 mmHg, diastolic blood pressure > 100 mmHg
  • Shift work in the last two months
  • Travels across time zones in the last four weeks
  • Use of photosensitisation drugs
  • Clinical manifest depression
  • Cardiovascular diseases which reduce age-appropriate exercise capacity

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: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Bright Light

8 a.m. study participants will be exposed to Bright Light (4500 lx) Phillips Energy Light HF3319 for 30 minutes prior and during a 30 minute lasting exercise test with self-chosen exercise intensity on a bicycle ergometer.

The light exposure and time-trial will be performed in three repetitive exercise sessions 48h apart.
Device: Phillips Energy Light HF3319
Exposure to Light administered with Phillips Energy Light HF3319.
Experimental: Control

8 a.m. study participants will be exposed to a Control Light Condition (230 lx) Phillips Energy Light HF3319 for 30 minutes prior and during a 30 minute lasting exercise test with self-chosen exercise intensity on a bicycle ergometer.

The light exposure and time-trial will be performed in three repetitive exercise sessions 48h apart.
Device: Phillips Energy Light HF3319
Exposure to Light administered with Phillips Energy Light HF3319.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Mean power output in watts
Time Frame: Power output during the first 30 minute time-trial on a bicycle ergometer.
Power output during the first 30 minute time-trial on a bicycle ergometer.

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Subjective sleepiness
Time Frame: 1 minute after the light exposure vs. 1 minute before the light exposure in the first time trial
Subjective sleepiness will be measured with the Multidimensional Mood Questionnaire (Category "Wakefulness - Sleepiness")
1 minute after the light exposure vs. 1 minute before the light exposure in the first time trial
Subjective Mood
Time Frame: 1 minute after the light exposure vs. 1 minute before the light exposure in the first time trial
Subjective Mood measured with the Multidimensional Mood Questionnaire (Category "Good Mood - Bad Mood")
1 minute after the light exposure vs. 1 minute before the light exposure in the first time trial
Mean power output in watts during the first, second and third time-trial on a bicycle ergometer.
Time Frame: Mean of the 30 minutes of the exercise from the first, second and third time-trial.
Mean of the 30 minutes of the exercise from the first, second and third time-trial.

Collaborators and Investigators

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

Sponsor

University of Basel

Investigators

  • Principal Investigator: Arno Schmidt-Trucksäss, Prof., University of Basel

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

January 1, 2016

Primary Completion (Actual)

June 1, 2017

Study Completion (Actual)

June 1, 2017

Study Registration Dates

First Submitted

December 14, 2015

First Submitted That Met QC Criteria

December 16, 2015

First Posted (Estimate)

December 21, 2015

Study Record Updates

Last Update Posted (Actual)

June 29, 2017

Last Update Submitted That Met QC Criteria

June 28, 2017

Last Verified

June 1, 2017

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • LEXI-MO

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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