difficulties falling asleep sleep onset insomnia
Conditions
Interventions
group 1: morning bright light therapy (30 min, 10.000 lux)
group 2: physical activity for 30 minutes (70% VO2max)
group 3: the placebo group, morning red dim light without physical activity (30
min).
Sponsors
Slotervaartziekenhuis
Eligibility
Age
18 Years to 99 Years
Inclusion criteria
Inclusion criteria: Diagnosed with DSPD Caucasian descent Age between 18 and 55 years; Body Mass Index between 18 and 30 kg/m2 Able to perform moderate intensity cycle exercises (assessed by PAR-Q) Is able to read and understand Patient Information
Exclusion criteria
Exclusion criteria: Presence of other sleep disturbances Use of sleep medication Use of melatonin / melatonin agonists Use of anti-depressants Use of anti-psychotic medication Shift work or transmeridian flights within 1 month prior to the study Substance abuse Use of medication inducing retinal photosensitivity Retinopathy or other eye pathologies
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| the main endpoints are outcomes related to sleep quality and phase of the circadian rhythms of melatonin and body temperature. These outcomes will be compared intra-individually to pre-treatment values and at group level between intervention groups. | — |
Secondary
| Measure | Time frame |
|---|---|
| secundary study parameters are outcomes related to mood and attention. | — |
Countries
Netherlands
Outcome results
None listed