この研究は、靴製造工場におけるプラスチック溶接機の女性オペレータ180人を電磁界（EMFs）ばく露群、付近のスーパーマーケットの女性従業員349人を非ばく露群として、EMFsの健康影響を調査した。その結果、プラスチック溶接機周辺の平均電界強度は51.3-368.9V/mの範囲であった；自律神経系症状の有病率はEMFsの高ばく露群で有意に増加した；月経異常の有病率は、非ばく露群12.0%、低ばく露群26.8%、高ばく露群33.8%で有意差が見られた；血清プロゲステロンはばく露群で有意に低かった、と報告している。
The detailed summary of this article is not available in your language or incomplete. Would you like to see a complete translation of the summary? Then please contact us →
A cross-sectional study was conducted in China to investigate the health effects of electromagnetic fields among female operators of plastic welding machines in shoe factories.
Female workers were recruited from supermarkets near the factories as the unexposed control group.
| グループ | 説明 |
|---|---|
| 参照集団 1 | control group: not exposed |
| 集団 2 | factories with low exposure: < 150 V/m |
| 集団 3 | factories with high exposure: ≥ 150 V/m |
| 参照集団 4 | cumulative exposure level: 0 years-V/m |
| 集団 5 | cumulative exposure level: 0 - 499 years-V/m |
| 集団 6 | cumulative exposure level: 500 - 999 years-V/m |
| 集団 7 | cumulative exposure level: ≥ 1000 years-V/m |
| タイプ | 値 |
|---|---|
| 合計 | 529 |
180 female operators in shoe fabrics and 349 female workers in supermarkets
No electric fields were detectable in the supermarkets (≥ 1 V/m). The mean electric field strengths in the frequency range from 25 MHz to 30 MHz in the vicinity of the welding machines in the five factories ranged from 51.3 to 368.9 V/m and exceeded the national standard of 25 V/m. The levels of magnetic field strength ranged from 0.02 A/m to 0.06 A/m below the reference values.
The prevalence of neurovegetative symptoms increased with higher electric field exposures. The prevalence of menstrual disorder was 12.0% in the unexposed group, but was significantly increased in the low exposure group < 150 V/m (26.8%) and in the high exposure group ≥ 150 V/m (33.8%). In the groups with cumulative exposure, the prevalence of most neurovegetative symptoms and menstrual abnormalities increased with higher cumulative exposure. No significant associations between adverse reproductive outcomes and occupational exposure were observed among the female workers. Serum progesterone was significantly lower in the exposed groups compared to the control group.
The authors concluded that occupational exposure to electromagnetic fields of plastic welding machines in shoe factories was associated with adverse health effects, including subjective symptoms, menstrual disorder and low level of serum progesterone among female operators.
このウェブサイトはクッキー（Cookies）を使って、最善のブラウジングエクスペリエンスを提供しています。あなたがこのウェブサイトを継続して使用することで、私たちがクッキーを使用することを許可することになります。
