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

[スマートフォンが放射するRF電磁界による心臓-呼吸パラメータへの影響:予備的な誘発研究] med./bio.

Effects of RF fields emitted from smart phones on cardio-respiratory parameters: a preliminary provocation study.

掲載誌: IEEE 33th Annual International Conference of the Engineering in Medicine and Biology Society (EMBC), 2011. IEEE, 2011, ISBN 9781457715891: 1961-1964

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研究目的(著者による)

This study describes an experimental setup for evaluating the physiological effects of radiofrequency fields emitted from WCDMA in humans.

詳細情報

Two groups of ten volunteers with self-reported electromagnetic hypersensitivity (five males/five females) and ten non-electromagnetic hypersensitivity subjects (five males/five females) participated and were sham exposed and exposed on two different days.
Physiological data were recorded for five minutes at four different stages: pre-exposure rest, after 11 minutes of exposure, after 27 minutes of exposure, and 11 minutes after exposure termination.

影響評価項目

ばく露

ばく露 パラメータ
ばく露1: 1,950 MHz
ばく露時間: continuous for 32 min
  • 電界強度: 6.9 V/m
  • SAR: 1.57 W/kg spatial average (partial body) (with the module's antenna positioned 67.5 mm from the ear reference point)
  • 電力: 251 mW (24 dBm)

ばく露1

主たる特性
周波数 1,950 MHz
タイプ
  • electromagnetic field
ばく露時間 continuous for 32 min
ばく露装置
ばく露の発生源/構造
  • WCDMA modules
Distance between exposed object and exposure source 3 mm
ばく露装置の詳細 modules inserted into a dummy phone constructed without metal; dummy phone placed in a headset with earplugs and kept in speaking position next to the test person's left cheek; a piece of wood placed between the phone and the person's cheek for thermal insulation
Sham exposure A sham exposure was conducted.
パラメータ
測定量 種別 Method Mass 備考
電界強度 6.9 V/m - - - -
SAR 1.57 W/kg spatial average 測定値 partial body with the module's antenna positioned 67.5 mm from the ear reference point
電力 251 mW - - - 24 dBm

Reference articles

  • Croft RJ et al. (2010): [ヒトのアルファ波リズムに対する第二、第三世代携帯電話の影響:思春期層、若年者、高齢者の安静時脳電図]
  • Nam KC et al. (2009): [CDMA携帯電話が発するRF界に対する過敏症: ひとつの誘発研究]
  • Unterlechner M et al. (2008): [UMTS携帯電話のような1.97 GHz電磁場は、人間の注意力と反応時間への影響はない]
  • Haarala C et al. (2007): [左または右脳半球への携帯電話のパルス波および連続波のばく露:人の認知機能への影響]
  • Beard BB et al. (2006): [SAMファントムと解剖学的に正確な人体頭部モデルとにおける携帯電話によるSAR計算値の比較]

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:
  • ばく露前
  • ばく露中
  • ばく露後

研究の主なアウトカム(著者による)

The data showed that WCDMA radiofrequency exposure of 30 minutes did not have any physiological effects in either group.

研究の種別:

研究助成

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