Light, Exercise Intensity and Mood in Overweight

Not Applicable

Completed

• Conditions: Overweight, Obesity Grade I
• Interventions: Device: Phillips Energy Light HF3319

• Registration Number: NCT02636335
• Lead Sponsor: University of Basel

Brief Summary

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.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2015-12-14
• Study First Submitted QC: 2015-12-16
• Study First Posted: 2015-12-21
• Study Start: 2016-01
• Status Verified: 2017-06
• Primary Completion: 2017-06
• Study Completion: 2017-06
• Last Update Submitted: 2017-06-28
• Last Update Posted: 2017-06-29

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 26

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 & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Bright Light	Phillips Energy Light HF3319	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.
Control	Phillips Energy Light HF3319	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.

Primary Outcome Measures

Name	Time	Method
Mean power output in watts	Power output during the first 30 minute time-trial on a bicycle ergometer.

Secondary Outcome Measures

Name	Time	Method
Mean power output in watts during the first, second and third time-trial on a bicycle ergometer.	Mean of the 30 minutes of the exercise from the first, second and third time-trial.
Subjective sleepiness	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")
Subjective Mood	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")

Trial Locations

Locations (1)

Departement of Sport, Exercise and Health; 🇨🇭 Basel, Switzerland