研究のタイプ: 医学／生物学の研究 (experimental study)

[高感受性者への携帯電話によるRFばく露の生理学的影響] med./bio.

Physiological effects of RF exposure on hypersensitive people by a cell phone

著者: Kim DW, Lee JH, Ji HC, Kim SC, Nam KC, Cha EJ
掲載誌: 2008 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Vancouver, BC, Canada. IEEE, 2008: 2322-2325; ISBN 978-1-4244-1814-5
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この研究は、電磁過敏症（EHS）症例群とその対照群を対象に、CDMA携帯電話からの無線周波（RF）放射を用いた誘発実験を行い、両群の生理学的パラメータを比較した。18人の自己申告EHS群と19人の対照群は、CDMA携帯電話からのRF放射へのばく露および擬似ばく露セッション（それぞれ30分間）に参加し、セッション中に心拍数、呼吸数、心拍数変動（HRV）を測定された。その結果、CDMA携帯電話によるRFばく露は、EHS群および対照群のどちらの生理学的パラメータにも影響を与えなかった、と報告している。

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研究目的（著者による）

To investigate the effects of radio frequency exposure with a CDMA cellular phone on autonomic changes (e.g. heart rate) in an electromagnetic hypersensitivity group and whether electromagnetic hypersensitivity resulted from autonomic changes.

詳細情報

18 electromagnetic hypersensitivity volunteers (8 males) and 19 normal volunteers (10 males) were exposed and sham-exposed during two days in randomized order. Physiological data were collected at four different times: during rest, after 15 min continuous exposure, after 31 min continuous exposure, 10 min after exposure termination.

影響評価項目

ばく露

ばく露 パラメータ
ばく露1: 824.64–848.37 MHz
ばく露時間: continuous for 31 min

ばく露1

主たる特性
周波数 824.64–848.37 MHz
タイプ
  • electromagnetic field
ばく露時間 continuous for 31 min
ばく露装置
ばく露の発生源／構造
  • セルラ－電話
ばく露装置の詳細 folder-type CDMA phone attached to the left side of a headphone, lower part of the phone wrapped with 5 mm thick insulating material, phone set to test mode
Sham exposure A sham exposure was conducted.
パラメータ
測定量 値 種別 Method Mass 備考
電力 300 mW - - - -
SAR 1.6 W/kg - - - -

ばく露を受けた生物:

方法 影響評価項目／測定パラメータ／方法

研究対象とした生物試料:
研究対象とした臓器系:
調査の時期:
  • ばく露中

研究の主なアウトカム（著者による）

The radio frequency exposure by a CDMA cellular phone did not have any effects on the physiological parameters for both groups. Regarding the subjective symptoms, both groups did not significantly differ between real and sham exposure. The perception accuracy of the exposure and sham exposure for the electromagnetic hypersensitivity group was 42.2 % and 73.9% and for the control group 3.0% and 95.1%.
The results on perception accuracy could be attributable to the fact that many subjects in the electromagnetic hypersensitivity group answered "Yes" to the question "Do you feel the electromagnetic field?" because they thought as if they could feel the electromagnetic field.In contrast, the control group revealed higher accuracy in perception to the non-exposure because they considered themselves that they could not feel electromagentic fields.

研究の種別:

研究助成

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