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Characteristics of a protocol to collect objective physical activity/sedentary behavior data in a large study : Seniors USP (Understanding Sedentary Patterns)

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Abstract
The Seniors USP study measured sedentary behaviour (activPAL3, 9 day wear) in older adults. The measurement protocol had three key characteristics: enabling 24-hour wear (monitor location, waterproofing); minimising data loss (reducing monitor failure, staff training, communication); and quality assurance (removal by researcher, confidence about wear). Two monitors were not returned; 91% (n=700) of returned monitors had 7 valid days of data. Sources of data loss included monitor failure (n=11), exclusion after quality assurance (n=5), early removal for skin irritation (n=8) or procedural errors (n=10). Objective measurement of physical activity and sedentary behaviour in large studies requires decisional trade-offs between data quantity (collecting representative data) and utility (derived outcomes that reflect actual behaviour).
Keywords
accelerometer, activPAL, adherence, data loss, methodology, posture

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MLA
Dall, Philippa M., et al. “Characteristics of a Protocol to Collect Objective Physical Activity/Sedentary Behavior Data in a Large Study : Seniors USP (Understanding Sedentary Patterns).” JOURNAL FOR THE MEASUREMENT OF PHYSICAL BEHAVIOUR, vol. 1, no. 1, 2018, pp. 26–31, doi:10.1123/jmpb.2017-0004.
APA
Dall, P. M., Skelton, D. A., Dontje, M. L., Coulter, E. H., Stewart, S., Cox, S. R., … Chastin, S. (2018). Characteristics of a protocol to collect objective physical activity/sedentary behavior data in a large study : Seniors USP (Understanding Sedentary Patterns). JOURNAL FOR THE MEASUREMENT OF PHYSICAL BEHAVIOUR, 1(1), 26–31. https://doi.org/10.1123/jmpb.2017-0004
Chicago author-date
Dall, Philippa M, Dawn A Skelton, Manon L Dontje, Elaine H Coulter, Sally Stewart, Simon R Cox, Richard J Shaw, et al. 2018. “Characteristics of a Protocol to Collect Objective Physical Activity/Sedentary Behavior Data in a Large Study : Seniors USP (Understanding Sedentary Patterns).” JOURNAL FOR THE MEASUREMENT OF PHYSICAL BEHAVIOUR 1 (1): 26–31. https://doi.org/10.1123/jmpb.2017-0004.
Chicago author-date (all authors)
Dall, Philippa M, Dawn A Skelton, Manon L Dontje, Elaine H Coulter, Sally Stewart, Simon R Cox, Richard J Shaw, Iva Čukić, Claire F Fitzsimons, Carolyn A Greig, Malcolm H Granat, Geoff Der, Ian J Deary, and Sebastien Chastin. 2018. “Characteristics of a Protocol to Collect Objective Physical Activity/Sedentary Behavior Data in a Large Study : Seniors USP (Understanding Sedentary Patterns).” JOURNAL FOR THE MEASUREMENT OF PHYSICAL BEHAVIOUR 1 (1): 26–31. doi:10.1123/jmpb.2017-0004.
Vancouver
1.
Dall PM, Skelton DA, Dontje ML, Coulter EH, Stewart S, Cox SR, et al. Characteristics of a protocol to collect objective physical activity/sedentary behavior data in a large study : Seniors USP (Understanding Sedentary Patterns). JOURNAL FOR THE MEASUREMENT OF PHYSICAL BEHAVIOUR. 2018;1(1):26–31.
IEEE
[1]
P. M. Dall et al., “Characteristics of a protocol to collect objective physical activity/sedentary behavior data in a large study : Seniors USP (Understanding Sedentary Patterns),” JOURNAL FOR THE MEASUREMENT OF PHYSICAL BEHAVIOUR, vol. 1, no. 1, pp. 26–31, 2018.
@article{8603961,
  abstract     = {The Seniors USP study measured sedentary behaviour (activPAL3, 9 day wear) in older adults. The measurement protocol had three key characteristics: enabling 24-hour wear (monitor location, waterproofing); minimising data loss (reducing monitor failure, staff training, communication); and quality assurance (removal by researcher, confidence about wear). Two monitors were not returned; 91% (n=700) of returned monitors had 7 valid days of data. Sources of data loss included monitor failure (n=11), exclusion after quality assurance (n=5), early removal for skin irritation (n=8) or procedural errors (n=10). Objective measurement of physical activity and sedentary behaviour in large studies requires decisional trade-offs between data quantity (collecting representative data) and utility (derived outcomes that reflect actual behaviour).},
  author       = {Dall, Philippa M and Skelton, Dawn A and Dontje, Manon L and Coulter, Elaine H and Stewart, Sally and Cox, Simon R and Shaw, Richard J and Čukić, Iva and Fitzsimons, Claire F and Greig, Carolyn A and Granat, Malcolm H and Der, Geoff and Deary, Ian J and Chastin, Sebastien},
  issn         = {2575-6605},
  journal      = {JOURNAL FOR THE MEASUREMENT OF PHYSICAL BEHAVIOUR},
  keywords     = {accelerometer,activPAL,adherence,data loss,methodology,posture},
  language     = {eng},
  number       = {1},
  pages        = {26--31},
  title        = {Characteristics of a protocol to collect objective physical activity/sedentary behavior data in a large study : Seniors USP (Understanding Sedentary Patterns)},
  url          = {http://dx.doi.org/10.1123/jmpb.2017-0004},
  volume       = {1},
  year         = {2018},
}

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