Abstract:
:There is growing public concern that radio frequency electromagnetic fields may have adverse biological effects. In the present study eight healthy male students were tested to see whether or not radio frequency electromagnetic fields as used in modern digital wireless telecommunication (GSM standard) have noticeable effects on salivary melatonin, cortisol, neopterin, and immunoglobulin A (sIgA) levels during and several hours after exposure. In a specifically designed, shielded experimental chamber, the circularly polarized electromagnetic field applied was transmitted by an antenna positioned 10 cm behind the head of upright sitting test persons. The carrier frequency of 900 MHz was pulsed with 217 Hz (average power flux density 1 W/m2). In double blind trials, each test person underwent a total of 20 randomly allotted 4 hour periods of exposure and sham exposure, equally distributed at day and night. The results obtained show that the salivary concentrations of melatonin, cortisol, neopterin and sIgA did not differ significantly between exposure and sham exposure.
journal_name
Bioelectromagneticsjournal_title
Bioelectromagneticsauthors
Radon K,Parera D,Rose DM,Jung D,Vollrath Ldoi
10.1002/bem.51subject
Has Abstractpub_date
2001-05-01 00:00:00pages
280-7issue
4eissn
0197-8462issn
1521-186Xpii
10.1002/bem.51journal_volume
22pub_type
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