Re-post: Lean Mass Longitudinally Confounds Sedentary Time and Physical Activity With Blood Pressure Progression in 2513 Children
November 21, 2024
A new study entitled “Comparing Multiple Approaches to Estimate Physical Activity, Sedentary Behavior, and Sleep in Pregnancy” was recently published in Journal for the Measurement of Physical Behaviour. A summary and citation are included below.
ABSTRACT
Introduction: The purpose of this study was to compare estimates of 24-hr activity using the best practice of a thigh accelerometer (activPAL), wrist actigraphy (Actiwatch), and a sleep diary (PAL + watch + diary) with estimates from simpler procedures, such as the thigh accelerometer and diary (PAL + diary) or thigh monitor alone (PAL only) during pregnancy.
Methods: Data collected during the second trimester from 40 randomly selected participants in the Pregnancy 24/7 cohort study were included. activPAL data were integrated with sleep time determined by wrist actigraphy (PAL + watch + diary) or diary-determined sleep (PAL + diary). In the PAL only analysis, average estimates were exported directly from the PAL software. Repeated-measures analysis of variance and intraclass correlations coefficients compared moderate–vigorous physical activity (MVPA), light physical activity, sedentary time, sleep, and wear time across measurement approaches. Pairwise comparisons using a Bonferroni correction explored significant differences identified from the omnibus analysis of variance.
Results: The three approaches arrived at consistent durations of physical activity (intraclass correlations coefficients > .95) but not for estimating sedentary behavior and sleep durations (intraclass correlations coefficients: .73–.82). PAL + diary overestimated MVPA by 2.3 min/day (p < .01) compared with PAL + diary + watch. PAL only overestimated sleep (25.3–29.0 min/day, p < .01) while underestimating MVPA (11.7–14.0 min/day, p < .01) compared with the other approaches.
Conclusions: Since the inclusion of the wrist actigraphy provided only slight differences in MVPA estimates, PAL + diary may provide acceptable estimates of 24-hr activity during pregnancy in future research. PAL only may be acceptable when exclusively interested in physical activity.
CITATION
Gallagher, J. B., Boonstra, D. E., Borrowman, J. D., Unke, M., Jones, M. A., Kline, C. E., Barone Gibbs, B., & Whitaker, K. M. (2024). Comparing Multiple Approaches to Estimate Physical Activity, Sedentary Behavior, and Sleep in Pregnancy. Journal for the Measurement of Physical Behaviour, 7(1), jmpb.2024-0007. Retrieved Nov 21, 2024, from https://doi.org/10.1123/jmpb.2024-0007
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