No association of 6-sulfatoxymelatonin with in-bed 60-Hz magnetic field exposure or illumination level among older adults

Shawn Youngstedt, Daniel F. Kripke, Jeffrey A. Elliott, Joseph D. Assmus

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

We examined the association of 6-sulfatoxymelatonin (aMT6s) excretion with in-bed 60-Hz magnetic field (MF) exposure and other potential regulators. Adults aged 50-81 years (n = 242 years, mean 67.6 ± 5.7 years) were monitored for 1 week in their home environments. Mean and maximum MF exposure were assessed with EMDEX Lite instruments. Illumination mesor, amplitude, and acrophase (peak time) were determined from 24-h Actillume wrist monitors. Other regulators of aMT6s assessed were age, usage of melatonin-altering medications, and day length. During two 24-h intervals, all urine voidings were collected. The mesor, amplitude, and acrophase of aMT6s excretion were determined. Multiple regression analyses revealed no association between MF and aMT6s. Medication usage was associated with significantly lower aMT6s mesor and amplitude. Illumination acrophase and amplitude were significantly associated with aMT6s acrophase. These data suggest no influence of nocturnal environmental MF exposure on aMT6s excretion in older adults.

Original languageEnglish (US)
Pages (from-to)201-209
Number of pages9
JournalEnvironmental Research
Volume89
Issue number3
DOIs
StatePublished - 2002
Externally publishedYes

Fingerprint

Magnetic Fields
Lighting
excretion
Magnetic fields
magnetic field
day length
Melatonin
Wrist
urine
multiple regression
Regression Analysis
Urine
6-sulfatoxymelatonin
exposure

Keywords

  • Aging
  • Drugs
  • EMF
  • Light
  • Melatonin
  • Photoperiod

ASJC Scopus subject areas

  • Environmental Science(all)

Cite this

No association of 6-sulfatoxymelatonin with in-bed 60-Hz magnetic field exposure or illumination level among older adults. / Youngstedt, Shawn; Kripke, Daniel F.; Elliott, Jeffrey A.; Assmus, Joseph D.

In: Environmental Research, Vol. 89, No. 3, 2002, p. 201-209.

Research output: Contribution to journalArticle

Youngstedt, Shawn ; Kripke, Daniel F. ; Elliott, Jeffrey A. ; Assmus, Joseph D. / No association of 6-sulfatoxymelatonin with in-bed 60-Hz magnetic field exposure or illumination level among older adults. In: Environmental Research. 2002 ; Vol. 89, No. 3. pp. 201-209.
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