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

University of Basel

Status: Completed

Conditions: Overweight, Obesity Grade I

Treatments: Device: Phillips Energy Light HF3319

Study type: Interventional

Funder types: Other

Identifiers

NCT02636335

LEXI-MO

Details and patient eligibility

About

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.

Enrollment: 26 patients

Sex: All

Ages: 18 to 40 years old

Volunteers: Accepts Healthy Volunteers

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

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Single Blind

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26 participants in 2 patient groups

Bright Light

Experimental group

Description:

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.

Treatment:

Device: Phillips Energy Light HF3319

Control

Experimental group

Description:

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.

Treatment:

Device: Phillips Energy Light HF3319