Accuracy of Thresholds Based on Cadence and Lifestyle Counts per Minute to Detect Outdoor Walking in Older Adults With Mobility Limitations

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dc.contributor.authorWebber, Sandra C.
dc.contributor.authorHahn, Francine
dc.contributor.authorLix, Lisa M.
dc.contributor.authorTittlemier, Brenda J.
dc.contributor.authorSalbach, Nancy M.
dc.contributor.authorBarclay, Ruth
dc.date.accessioned2021-05-08T02:03:57Z
dc.date.available2021-05-08T02:03:57Z
dc.date.issued2020-05
dc.date.submitted2021-04-26T22:18:19Zen_US
dc.description.abstractTo determine the optimal threshold, based on cadence and lifestyle counts per minute, to detect outdoor walking in mobility-limited older adults. Methods: Older adults (N = 25, median age: 77.0 years, interquartile range: 10.5) wore activity monitors during 80 outdoor walks. Walking bouts were identified manually (reference standard) and compared with identification using cadence thresholds (≥30, ≥35, ≥40, ≥45, and ≥50 steps/min) and >760 counts per minute using low frequency extension analysis. Results: Median walking bout duration was 10.5 min (interquartile range 4.8) and median outdoor walking speed was 0.70 m/s (interquartile range 0.20). Cadence thresholds of ≥30, ≥35, and ≥40 steps/min demonstrated high sensitivity (1.0, 95% confidence intervals [0.95, 1.0]) to detect walking bouts; estimates for specificity and positive predictive value were highest for ≥40 steps/min. Conclusion: A cadence threshold of ≥40 steps/min is recommended for detecting sustained outdoor walking in this population.en_US
dc.description.sponsorshipThis study was funded by a project scheme grant from the Canadian Institutes of Health Research, grant number 376439.en_US
dc.identifier.citationAPAen_US
dc.identifier.doi10.1123/japa.2019-0235
dc.identifier.urihttp://hdl.handle.net/1993/35504
dc.language.isoengen_US
dc.publisherHuman Kinetics, Inc.en_US
dc.rightsopen accessen_US
dc.subjectaccelerometeren_US
dc.subjectlow frequency extensionen_US
dc.subjectsensitivityen_US
dc.subjectspecificityen_US
dc.titleAccuracy of Thresholds Based on Cadence and Lifestyle Counts per Minute to Detect Outdoor Walking in Older Adults With Mobility Limitationsen_US
dc.typeArticleen_US
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