Research Output

Minimum Wear Duration for the activPAL Professional Activity Monitor in Adolescent Females

  Objectives: This study aims to determine the minimum number of days of monitoring required to reliably predict sitting/lying time, standing time, light intensity physical activity (LIPA), moderate-to-vigorous intensity physical activity (MVPA) and steps in adolescent females. Methods: 195 adolescent females (mean age=15.7 years; SD=0.9) participated in the study. Participants wore the activPAL activity monitor for a seven day protocol. The amount of time spent sitting/lying, standing, in LIPA and in MVPA and the number of steps per day were quantified. Spearman-Brown Prophecy formulae were used to predict the number of days of data required to achieve an intraclass correlation coefficient of both 0.7 and 0.8. Results: For the percentage of the waking day spent sitting/lying, standing, in LIPA and in MVPA, a minimum of 9 days of accelerometer recording is required to achieve a reliability of ≥0.7, while a minimum of 15 days is required to achieve a reliability of ≥0.8. For steps, a minimum of 12 days of recording is required to achieve a reliability of ≥0.7, with 21 days to achieve a reliability of ≥0.8. Conclusions: Future research in adolescent females should collect a minimum of 9 days of accelerometer data to reliably estimate sitting/lying time, standing time, LIPA and MVPA, while 12 days is required to reliably estimate steps.

  • Type:

    Article

  • Date:

    31 August 2017

  • Publication Status:

    Published

  • Publisher

    Human Kinetics

  • DOI:

    10.1123/pes.2016-0188

  • Cross Ref:

    10.1123/pes.2016-0188

  • ISSN:

    0899-8493

  • Library of Congress:

    RA0421 Public health. Hygiene. Preventive Medicine

  • Dewey Decimal Classification:

    613 Personal health & safety

  • Funders:

    Historic Funder (pre-Worktribe)

Citation

Dowd, K. P., Purtill, H., Harrington, D. M., Hislop, J. F., Reilly, J. J., & Donnelly, A. E. (2017). Minimum Wear Duration for the activPAL Professional Activity Monitor in Adolescent Females. Pediatric Exercise Science, 29(3), 427-433. https://doi.org/10.1123/pes.2016-0188

Authors

Keywords

activPAL, minimum, adolescent, wear time, physical activity, sedentary behavior

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