Describing the diurnal relationships between objectively measured mother and infant physical activity
ISPAH ePoster Library. Prioreschi A. Oct 15, 2018; 225433; 498
Dr. Alessandra Prioreschi
Dr. Alessandra Prioreschi
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Abstract Background:<\b>
This study aimed to determine the relationship between maternal and infant objectively measured physical activity, and to examine the diurnal interactions between these behaviours while accounting for potential covariates. Methods:<\b>
Mothers and infants (n=152 pairs; infants aged 3-24 months) were recruited from Soweto, South Africa, and physical activity was measured using a wrist worn accelerometer (Axivity AX3, Axivity Ltd, Newcastle-upon-Tyne, UK) for 3-7 days. Significant correlates of infant physical activity, as well as the interactions between mother’s physical activity, day of the week, sleep status, and caregiver status, were included in panel regression analyses with infant physical activity as the outcome. Results:<\b>
The majority of mothers (73%) did not spend any time apart from their infant. During weekdays, the combined effect of mother’s physical activity (b=0.11) as well as the interactions between mother’s physical activity with caregiver status (b=0.17), and sleep status (b=-0.04) on infant physical activity was b=0.24; while during weekend days this association was b=0.21; and was largely moderated by the interaction between the mother being with the infant and her activity levels (b=0.23), but partly attenuated by mother’s physical activity independent of other variables (b=-0.04). For each hour of the day for both mother and infant, peaks of physical activity were higher when the mother was not the primary caregiver. Conclusions: Infant physical activity levels were strongly associated with their mother’s activity levels particularly during the week, yet this relationship was made stronger when mothers were being active while looking after their infant.
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