Associations between objective measures of physical activity, sleep and stress levels among preschool children
Cortisol is often used as a biological marker for stress. When measured in urine or serum, representing a short-term measurement of the hormone, it has been associated with unfavorable sleep characteristics an...
Source: BMC Pediatrics - Category: Pediatrics Authors: Dagny Y. Eythorsdottir, Peder Frederiksen, Sofus C. Larsen, Nanna J. Olsen and Berit L. Heitmann Tags: Research article Source Type: research