TY - JOUR
T1 - The association between lead and micronutrient status, and children's sleep, classroom behavior, and activity
AU - Kordas, Katarzyna
AU - Casavantes, K. Marcela
AU - Mendoza, Cristina
AU - Lopez, Patricia
AU - Ronquillo, Dolores
AU - Rosado, Jorge L.
AU - Vargas, Gonzalo García
AU - Stoltzfus, Rebecca J.
N1 - Funding Information:
This study was supported by the Spencer Foundation (Chicago, IL) and by a Fulbright Scholarship awarded to Dr Kordas.
PY - 2007
Y1 - 2007
N2 - The role of lead exposure or micronutrient deficiencies in children's sleep problems is unknown. Although elevated blood lead concentrations (BPb) are clearly related to behavior problems in children, few researchers have used objective observations. The authors investigated relationships between lead, micronutrient status, sleep, classroom behavior, and activity in Mexican children aged 6-8 years living close to a metal foundry. Mean BPb was 11.5 ± 6.1 μg/dL; 50% had levels ≥ 10 μg/dL. Ten percent of children had hemoglobin < 12.4 g/dL. Parents reported on children's sleep and fatigue (n 550). The authors also observed classroom behavior (n = 157) and measured physical activity (n = 168). BPb ≥ 10 μg/dL was associated with later waking time and shorter duration of sleep. Anemia was linked to more off-task behaviors, lower physical activity, earlier bedtime, and shorter sleep onset. Researchers should investigate these relationships further, using more sensitive measures.
AB - The role of lead exposure or micronutrient deficiencies in children's sleep problems is unknown. Although elevated blood lead concentrations (BPb) are clearly related to behavior problems in children, few researchers have used objective observations. The authors investigated relationships between lead, micronutrient status, sleep, classroom behavior, and activity in Mexican children aged 6-8 years living close to a metal foundry. Mean BPb was 11.5 ± 6.1 μg/dL; 50% had levels ≥ 10 μg/dL. Ten percent of children had hemoglobin < 12.4 g/dL. Parents reported on children's sleep and fatigue (n 550). The authors also observed classroom behavior (n = 157) and measured physical activity (n = 168). BPb ≥ 10 μg/dL was associated with later waking time and shorter duration of sleep. Anemia was linked to more off-task behaviors, lower physical activity, earlier bedtime, and shorter sleep onset. Researchers should investigate these relationships further, using more sensitive measures.
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U2 - 10.3200/AEOH.62.2.105-112
DO - 10.3200/AEOH.62.2.105-112
M3 - Article
C2 - 18316268
AN - SCOPUS:42949128575
SN - 1933-8244
VL - 62
SP - 105
EP - 112
JO - Archives of Environmental and Occupational Health
JF - Archives of Environmental and Occupational Health
IS - 2
ER -
