Cross-sectional and longitudinal comparisons of self-reported and device-assessed physical activity and sedentary behaviour
MetadataShow full item record
© 2020 Sports Medicine Australia Objectives: To examine the longitudinal associations and differences between self-reported and device-assessed physical activity (PA) and sedentary behaviour (SB), using a multifaceted statistical approach. Design: Longitudinal measurement burst. Methods: In total, 52 university students (78% female) aged 18–38 years (mean = 21.94 ± 4.57 years) participated. The study consisted of three blocks of six days of measurement, during which participants wore an accelerometer on their wrist for the entire block, and self-reported their PA over the 6 days at the end of each block. Results: Meaningful latent differences between methods were observed for moderate PA and SB across all three assessment periods, such that participants underreported the time spent in each activity. Bland–Altman plots revealed a positive mean difference for vigorous PA, with over-reporting increasing as mean levels increased. Negative mean differences were observed for all other intensities. Underreporting of moderate PA increased as the mean level increased, whereas for light PA and SB, underreporting decreased at high levels. Repeated measures correlations revealed a meaningful association for vigorous PA only, suggesting that as self-reported minutes increase so too do device-measured minutes. Conclusions: We found evidence of cross-sectional and longitudinal differences and weak associations between self-reported and device-assessed PA and SB. Future work is needed to enhance the quality of self-reported methods to assess PA and SB (e.g., face and content validity), and consider improvements to the processing of device-based data.
Showing items related by title, author, creator and subject.
Pulido, J.; Barrero, L.; Mathiassen, Svend; Dennerlein, J. (2018)© The Author(s) 2017. Objectives: Duration of tasks in a job is an essential interest in occupational epidemiology. Such duration is frequently measured using self-reports, which May, however, be associated with both bias ...
A validation study comparing self-reported travel diaries and objective data obtained from in-vehicle monitoring devices in older drivers with bilateral cataractAgramunt, Seraina; Meuleners, Lynn; Chow, Kyle; Ng, J.; Morlet, N. (2016)Background: Advances in technology have made it possible to examine real-world driving using naturalistic data obtained from in-vehicle monitoring devices. These devices overcome the weaknesses of self-report methods and ...
Johnson, Sarah E. (2010)Parental time pressure, in terms of actual workload and subjective reports, is high and likely to increase in the future, with ongoing implications for personal wellbeing. The combination of parenting young children and ...