How many days of monitoring are needed to reliably assess SenseWear Armband outcomes in primary school-aged children?

Ridgers, Nicola D., Hnatiuk, Jill A., Vincent, Grace E., Timperio, Anna, Barnett, Lisa M. and Salmon, Jo 2016, How many days of monitoring are needed to reliably assess SenseWear Armband outcomes in primary school-aged children?, Journal of science and medicine in sport, vol. 19, no. 12, pp. 999-1003, doi: 10.1016/j.jsams.2016.02.009.

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Title How many days of monitoring are needed to reliably assess SenseWear Armband outcomes in primary school-aged children?
Author(s) Ridgers, Nicola D.ORCID iD for Ridgers, Nicola D.
Hnatiuk, Jill A.ORCID iD for Hnatiuk, Jill A.
Vincent, Grace E.
Timperio, AnnaORCID iD for Timperio, Anna
Barnett, Lisa M.ORCID iD for Barnett, Lisa M.
Salmon, JoORCID iD for Salmon, Jo
Journal name Journal of science and medicine in sport
Volume number 19
Issue number 12
Start page 999
End page 1003
Total pages 5
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2016-12
ISSN 1878-1861
Keyword(s) Energy expenditure
Physical activity
Sedentary behaviour
Summary OBJECTIVES: To identify the number of hours and days or nights of monitoring required to reliably estimate energy expenditure (EE), steps, waking sedentary time, light- (LPA), moderate- (MPA), vigorous- (VPA), moderate- to vigorous-intensity physical activity (MVPA), time in bed and total sleep time using the SenseWear Armband. DESIGN: Cross-sectional study. METHODS: One hundred and two children (50% boys) aged 8-11 years from six schools wore a SenseWear Armband (BodyMedia Inc, USA) for eight consecutive days (seven consecutive nights). Hourly increments of valid day wear time criteria were examined (days/week; 8h/day-14h/day). Intra-class correlation coefficients estimated the reliability for any individual day for each wear time criteria. The Spearman-Brown prophecy formula was used to determine the number of days/nights of monitoring needed to achieve reliability estimates of 0.7, 0.8 and 0.9. RESULTS: Fewer monitoring days were needed as the valid day criteria became more stringent. For example, at least 12h of wear time on at least 2 days was required to achieve a reliability of 0.7 for EE. In contrast, at least 8h/day on 5 days resulted in reliable estimates (0.7) for MPA, VPA and MVPA. Between 6 and 7 nights of monitoring were required to reliably estimate children's time in bed and total sleep time, respectively. CONCLUSIONS: A 7-day monitoring protocol in primary school-aged children would provide acceptable reliability for the assessment of EE, waking sedentary time, LPA, MPA, VPA, MVPA, time in bed and total sleep time, as assessed by the SenseWear Armband.
Language eng
DOI 10.1016/j.jsams.2016.02.009
Field of Research 110699 Human Movement and Sports Science not elsewhere classified
1106 Human Movement And Sports Science
1117 Public Health And Health Services
Socio Economic Objective 920401 Behaviour and Health
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2016, Elsevier
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