Objective measurement of tummy time in infants (0-6 months): A validation study
Principal Investigator(s): View help for Principal Investigator(s) Lyndel Hewitt, University of Wollongong
Version: View help for Version V1
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Data_Objective-measurement-of-tummy-time-in-infants.xlsx | application/vnd.openxmlformats-officedocument.spreadsheetml.sheet | 84.8 KB | 01/09/2019 04:58:PM |
Project Citation:
Hewitt, Lyndel. Objective measurement of tummy time in infants (0-6 months): A validation study. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2019-01-15. https://doi.org/10.3886/E108028V1
Project Description
Summary:
View help for Summary
The
2017 Australian and Canadian 24-hour movement guidelines recommend infants
receive 30 minutes of tummy time daily. Currently, there are no validated
objective measurement tools or devices to assess tummy time. The purpose of
this study was to: 1) test the practicality of using devices on infants as an
objective measure of tummy time, and 2) test the accuracy of developed
algorithms and cut-points for predicting prone posture. Thirty-two healthy
infants aged 4 to 25 weeks completed a protocol of 12 positions. Infants were
placed in each position for 3 minutes while wearing a MonBaby (chest), GENEActiv
(right hip) and two ActiGraphs (right hip and ankle). Direct observation was
the criterion measure. The accuracy of the algorithms or cut-points to predict prone
on floor, non-prone and prone supported positions were analyzed. Parents also completed
a practicality questionnaire. Algorithms
and cut-points to classify posture using devices from MonBaby, GENEActiv and ActiGraph
(hip and ankle) were 79%, 95%, 90% and 88% accurate at defining tummy time and 100%,
98%, 100% and 96% accurate at defining non-prone positions, respectively. GENEActiv
had the smallest mean difference and limits of agreement (-8.4s, limits of agreement
[LoA]: -78.2 to 61.3s) for the prone on floor positions and ActiGraph Hip had
the smallest mean difference and LoA for the non-prone positions (-0.2s, LoA:
-1.2 to 0.9s). The majority of parents agreed all devices were practical and
feasible to use with MonBaby being the preferred device. The evaluated algorithms and cut-points for GENEActiv
and ActiGraph (hip) are of acceptable accuracy to objectively measure tummy
time (time spent prone on floor). Accurate measurement of infant positioning
practices will be important in the observation of 24-hour movement guidelines
in the early years.
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