Personal power-frequency magnetic field exposure in women recruited at an infertility clinic: association with physical activity and temporal variability.
Radiat Prot Dosimetry
; 168(4): 478-88, 2016 Mar.
Article
em En
| MEDLINE
| ID: mdl-26152565
ABSTRACT
Current epidemiologic approaches for studying exposure to power-frequency magnetic fields and the risk of miscarriage are potentially biased due to lack of attention to the relationship of exposure with physical activity and within-individual variability in exposures over time. This analysis examines these two issues using data from a longitudinal pilot study of 40 women recruited from an infertility clinic that contributed data for up to three 24-h periods separated by a median of 3.6 weeks. Physical activity was positively associated with peak exposure metrics. Higher physical activity within environments did not necessarily lead to higher peak exposures, suggesting that movement between and not within environments increases one's probability of encountering a high field source. Peak compared with central tendency metrics were more variable over time. Future epidemiology studies associated with peak exposure metrics should adjust for physical activity and collect more than 1 d of exposure measurement to reduce bias.
Texto completo:
1
Coleções:
01-internacional
Contexto em Saúde:
2_ODS3
Base de dados:
MEDLINE
Assunto principal:
Campos Eletromagnéticos
/
Exposição Ambiental
/
Infertilidade
/
Atividade Motora
Tipo de estudo:
Etiology_studies
/
Incidence_studies
/
Prognostic_studies
/
Risk_factors_studies
Limite:
Adult
/
Female
/
Humans
País/Região como assunto:
America do norte
Idioma:
En
Revista:
Radiat Prot Dosimetry
Ano de publicação:
2016
Tipo de documento:
Article