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

[作業者の低周波磁界への職業ばく露と尿中メラトニンの間には関係がない] med./bio.

No association between occupational exposure to ELF magnetic field and urinary 6-sulfatoximelatonin in workers.

掲載誌: Bioelectromagnetics 2006; 27 (8): 667-673

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研究目的(著者による)

To study the effect of occupational extremely low frequency magnetic field exposure on urinary 6-sulphatoxy melatonin (6-OHMS) content in different workers (from clothing production, local utilities company, primary school, engineering industry and other companies).

詳細情報

Urinary 6-OHMS in morning samples is an indicator of night-time melatonin production. Urine was collected twice on friday and the following monday (interruption of occupational exposure).
Exposure was monitored for three complete work shifts in 59 workers using personal exposure meters. Workers were classified as "low exposed" (< or = 0.2 µT) or "higher exposed" (> 0.2 µT).

影響評価項目

ばく露

ばく露 パラメータ
ばく露1:
ばく露時間: continuous for 3 complete work shifts
  • 磁束密度: 0.54 µT mean (occupational exposure group)
  • 磁束密度: 0.04 µT mean (non-occupational exposure group)

ばく露1

主たる特性
周波数
タイプ
  • magnetic field
波形
  • unspecified
ばく露時間 continuous for 3 complete work shifts
Additional information Occupational exposure
ばく露装置
ばく露装置の詳細 The meters were worn on the hip in a belted pouch. During the sleep, subjects were instructed to leave the meter beside the bed, close to the body, but not near electrical and electronic devices.
Additional information 59 workers, 26 men and 33 women, engaged in different occupations were included in the study: 26 in clothing production, 14 in local utility company, 6 primary school teachers, 5 in engineering industry and a further 8 in other occupations. Morning urine samples were collected twice: 1) on Friday after 4 days of occupational exposure or 2) on Monday after 2 days of no occupational exposure.
パラメータ
測定量 種別 Method Mass 備考
磁束密度 0.54 µT mean 測定値 - occupational exposure group
磁束密度 0.04 µT mean 測定値 - non-occupational exposure group

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 data do not support the hypothesis that occupational exposure to extremely low frequency magnetic field may affect melatonin secretion.

研究の種別:

研究助成

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