The primary aim of this project is to investigate parasympathetic nervous system /vagus nerve reactivity as measured by the heart rate variability response to a sub maximal exercise test.

A secondary aim is to examine the heart rate variability reactivity data in relation to factors known to influence autonomic nervous system activity (e.g. behaviour, lifestyle, environment, demographics). 

This study will be completed in two Phases.

Study Phase 1: This phase will investigate parasympathetic nervous system reactivity and recovery following sub maximal exercise in children and examine whether these physiological responses are associated with parental lifestyle and child behaviour.

Study Phase 2 – This phase will investigate parasympathetic nervous system reactivity and recovery following sub maximal exercise in children and examine the effect of a 5 week exercise intervention on the physiological responses.

Phase 1 and 2 of this project has been approved by the University of Canberra Human Ethics Committee (Protocol 1971).