Why the study?
Sex-specific and age-specific reference values for cardiac autonomic function at rest, during maximal exercise, and in post-exercise recovery were needed in preschool children.
Does age or sex influence cardiac autonomic function during rest, exercise, and recovery in healthy preschool children?
Population
167 healthy children aged 3 to 6 years in southern Spain
Comparison
Age and sex differences during a 10 × 20 m exercise test
Design
Cohort study
Authors
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Provides preliminary autonomic norms in preschoolers; hypothesis-generating and requires validation before clinical use.
Does age or sex influence cardiac autonomic function during rest, exercise, and recovery in healthy preschool children?
Cardiovascular autonomic function during rest, exercise, and recovery in preschool children improves with age but is not influenced by sex or cardiorespiratory fitness.
Román et al. (2022) studied this question.
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