50 male rats were used, randomly assigned to four groups: a cage control (n=5), a sham exposed control (n=20), a combined radiofrequency-exposed (n=20) or a gamma ray-exposed group (as positive control, 5 Gy, n= 5).
Exposure duration: continuous 45 min/day, 5 days/week for 12 weeks
|Exposure room||2295 mm x 2293 mm x 1470 mm reverberation chamber with 2.3 mm thick stainless steel walls as exposure chamber|
|Setup||five 420 mm x 260 mm x 180 mm polycarbonate cages with two rats each placed inside the reverberation chamber; rats exposed simultaneously to WCDMA and CDMA|
|Sham exposure||A sham exposure was conducted.|
No significant differences in testicular function, including sperm counts in the cauda epididymis, MDA concentration in testes and epididymis, frequency of spermatogenesis stages, or number of apoptotic cells in each testis, were found during spermatogenesis in rats simultaneously exposed to CDMA and WCDMA radiofrequency electromagnetic fields at a SAR of 2 W/kg each (4 W/kg total) for 12 weeks.
The authors conclude, that the findings suggest that simultaneous exposure to 848.5 MHz and 1950 MHz radiofrequency electromagnetic fields had no adverse effects on the male reproductive system, as seen in this rat spermatogenesis model.