Why the study?
Does occupational chronic lead exposure reduce heart rate variability recovery in male workers?
Population
109 male lead-exposed workers and 27 controls
Comparison
Occupational chronic lead exposure vs Unexposed controls
Design
Cross-sectional
Follow-up
4 years (for follow-up subgroup)
Authors
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Occupational lead exposure may delay HRV recovery in workers; leaves open effects on cardiovascular outcomes or exposure limits.
Does occupational chronic lead exposure reduce heart rate variability recovery in male workers?
Long-term occupational lead exposure within current threshold limits causes vagal depression, evidenced by delayed heart rate variability recovery after strain.
ckelmann et al. (2002) studied this question.
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