The differences between electrosensitive and healthy subjects regarding sleep quality and the melatonin level in saliva and urine should be investigated.
30 electrosensitive and 25 healthy subjects participated in the study. Subjects collected their two first saliva samples at home. The first sample was collected before bedtime on the day prior to the experiment. The second sample was taken 5 min after they woke up in the morning of the experiment day before coming to laboratory. Participants arrived at the laboratory around 09:00 and spent their waking time there. Saliva was then collected every 30 min from 10:00 to 11:30 and from 14:00 to 16:30. Total urine was collected overnight from 20:00 on the previous day to wake-up time as the night fraction, and from wake-up time to 16:30 as the daytime fraction.
| Exposure | Parameters |
|---|---|
Exposure 1:
|
- |
no exposure; during the time in the laboratory, participants were located inside a dimly lit, electrically shielded room serving as a Faraday cage allowing electrosensitive participants to be in an environment without EMFs
| Frequency |
|
|---|
No parameters are specified for this exposure.
The subjective sleep quality was significantly lower in electrosensitive subjects than in healthy subjects, while there were no differences observed in sleepiness.
However, no statistical difference was found between the two groups for saliva melatonin and urine hydroxymelatoninsulfate levels.
The authors conclude that the present results show no association between the melatonin level in saliva and urine and a reduced subjective sleep quality in electrosensitive persons.
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