Clinical Trials Logo

Clinical Trial Summary

Sleep disturbances are common in pregnancy, and the incidence increases during the third trimester. Light and specially the blue wavelengths of light, is affecting sleep and the circadian rhythm. The main aim of this randomized controlled study is to investigate the effect of Blue-blocking glasses (BB-glasses) used in the evening and night on sleep and mood in pregnant women in the third trimester. The outcome measures assess sleep variables, alertness, melatonin level, sleepiness (subjectively), mood and symptoms of anxiety and depression. In addition we want to measure the pregnancy related sleep problems, alcohol intake, physical activity and perceives stress in the study population, and the association with daily/nightly light exposure.


Clinical Trial Description

Several hormonal and mechanical influences can cause insomnia in pregnancy, and insomnia has been reported by 62% of pregnant women, a number that is significantly higher than found in the general population (10-15%). Disrupted sleep among pregnant women also includes nocturia (a frequent need to get up and urinate at night), dyspnea (shortness of breath), nasal congestion, muscular aches and pelvic pains, fetal activity, leg cramps as well as reflux. Artificial light in the evening and during the night increases alertness, disturbs sleep, shifts the timing of the circadian clock and impairs the brains' restorative slow waves during deep sleep. Recent studies have however shown that use of BB-glasses in the evening improves sleep quality (subjectively reported) among persons with insomnia, and prevent alertness caused by blue-light emitting screens which are part of devices such as smart-phones and tablets. This project will contribute with new knowledge on how filtering nightly light exposure in pregnant women in their third trimester affects their sleep and mood. Importantly, the project initiates new research on a potential non-pharmacological treatment of sleep disturbances by blocking blue wavelengths of light in the evening and during nocturnal awakenings. Blue light is known to increase alertness through a recently described retinal receptor; the intrinsically photoresponsive retinal ganglion cell (IpRGC), specialized for detecting daytime light signal. This project is highly innovative and may have significant practical implications Due to the variety of aims and outcome measures, we plan to present the outcomes in separate articles. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT03114072
Study type Interventional
Source University of Bergen
Contact
Status Active, not recruiting
Phase N/A
Start date June 6, 2017
Completion date July 2026

See also
  Status Clinical Trial Phase
Completed NCT04959214 - The Effect Of Progressıve Relaxatıon Exercıses N/A
Recruiting NCT05820919 - Enhancing Sleep Quality for Nursing Home Residents With Dementia - R33 Phase N/A
Completed NCT05555186 - The Effects of Bright Light Therapy on Adolescent's Sleep Quality and Well-being N/A
Completed NCT05093465 - A Comparison of Two Behavioral Sleep Interventions Among College Students (ProjectTECH) N/A
Completed NCT03673397 - The Acute Effect of Aerobic Exercise on Sleep in Patients With Depression N/A
Recruiting NCT04368416 - Anxiety/Depression, Sleep and Alcohol in Elderly Anxiety/Depression, Sleep Disturbances and Alcohol Use Disorder in Elderly With Cognitive Complaints
Completed NCT04566822 - Calm Sleep Coaching N/A
Not yet recruiting NCT06406309 - Settling Down for Sleep in ADHD: The Impact of Sensory and Arousal Systems on Sleep in ADHD N/A
Recruiting NCT00860756 - Sleep Disturbance in Deployed Soldiers Phase 0
Recruiting NCT05699837 - Alpha Entrainment for Pain and Sleep (Extension) N/A
Completed NCT06108115 - Smartphone-Based Intervention for Sleep Disturbance in Individuals Recovering From Alcohol Use Disorder N/A
Completed NCT05511818 - Radicle Rest: A Study of Cannabinoids on Sleep and Health Outcomes N/A
Completed NCT04560595 - Remote Guided Caffeine Reduction N/A
Not yet recruiting NCT06104280 - Medications for Opioid Use Disorder Photosensitive Retinal Ganglion Cell Function, Sleep, and Circadian Rhythms: Implications for Treatment N/A
Enrolling by invitation NCT04290650 - Sleep Disturbances in Patients With Psychotic Symptoms (AkuSleep) N/A
Recruiting NCT04207502 - Integrating Systematic Data of Geriatric Medicine to Explore the Solution for Health Aging
Suspended NCT03908905 - Sleep Disturbances and Chronic Widespread Pain
Completed NCT03269760 - Multimodal Sleep Pathway for Shoulder Arthroplasty Phase 1
Completed NCT04990206 - Improving Sleep Health in Adults With Overweight or Obesity N/A
Completed NCT03112824 - Functional Assessment of Ashwagandaha Root Extract During Weight Loss N/A