Overweight, Obesity Grade I
Conditions
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.
Interventions
DEVICEPhillips Energy Light HF3319
Exposure to Light administered with Phillips Energy Light HF3319.
Sponsors
University of Basel
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Subject)
Eligibility
Sex/Gender
ALL
Age
18 Years to 40 Years
Healthy volunteers
Yes
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
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Mean power output in watts | Power output during the first 30 minute time-trial on a bicycle ergometer. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| 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) |
| 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. | — |
Countries
Switzerland
Outcome results
None listed