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Walking cadence (steps/min) and intensity in 41 to 60-year-old adults: the CADENCE-adults study

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dc.contributor.authorTudor-Locke, Catrine
dc.contributor.authorDucharme, Scott W.
dc.contributor.authorAguiar, Elroy J.
dc.contributor.authorSchuna, John M., Jr.
dc.contributor.authorBarreira, Tiago V.
dc.contributor.authorMoore, Christopher C.
dc.contributor.authorChase, Colleen J.
dc.contributor.authorGould, Zachary R.
dc.contributor.authorAmalbert-Birriel, Marcos A.
dc.contributor.authorMora-Gonzalez, Jose
dc.contributor.authorChipkin, Stuart R.
dc.contributor.authorStaudenmayer, John
dc.contributor.otherUniversity of North Carolina
dc.contributor.otherUniversity of North Carolina Charlotte
dc.contributor.otherCalifornia State University Long Beach
dc.contributor.otherUniversity of Alabama Tuscaloosa
dc.contributor.otherOregon State University
dc.contributor.otherSyracuse University
dc.contributor.otherUniversity of North Carolina Chapel Hill
dc.contributor.otherUniversity of Massachusetts Amherst
dc.date.accessioned2023-09-28T19:36:41Z
dc.date.available2023-09-28T19:36:41Z
dc.date.issued2020
dc.description.abstractBackground In younger adults (i.e., those < 40 years of age) a walking cadence of 100 steps/min is a consistently supported threshold indicative of absolutely-defined moderate intensity ambulation (i.e., >= 3 metabolic equivalents; METs). Less is known about the cadence-intensity relationship in adults of middle-age. Purpose To establish heuristic (i.e., evidence-based, practical, rounded) cadence thresholds for absolutely-defined moderate (3 METs) and vigorous (6 METs) intensity in adults 41 to 60 years of age. Methods In this cross-sectional study, 80 healthy adults of middle-age (10 men and 10 women representing each 5-year age-group between 41 to 60 years; body mass index = 26.0 +/- 4.0 kg/m(2)) walked on a treadmill for 5-min bouts beginning at 0.5 mph and increasing in 0.5 mph increments. Performance termination criteria included: 1) transitioning to running, 2) reaching 75% of age-predicted maximum heart rate, or 3) reporting a Borg rating of perceived exertion > 13. Cadence was directly observed (i.e., hand tallied). Intensity (i.e., oxygen uptake [VO2] mL/kg/min) was assessed with an indirect calorimeter and converted to METs (1 MET = 3.5 mL/kg/min). A combination of segmented regression and Receiver Operating Characteristic (ROC) modeling approaches was used to identify optimal cadence thresholds. Final heuristic thresholds were determined based on an evaluation of classification accuracy (sensitivity, specificity, positive and negative predictive value, overall accuracy). Results The regression model identified 101.7 (95% Predictive Interval [PI]: 54.9-110.6) and 132.1 (95% PI: 122.0-142.2) steps/min as optimal cadence thresholds for 3 METs and 6 METs, respectively. Corresponding values based on ROC models were 98.5 (95% Confidence Intervals [CI]: 97.1-104.9) and 117.3 (95% CI: 113.1-126.1) steps/min. Considering both modeling approaches, the selected heuristic thresholds for moderate and vigorous intensity were 100 and 130 steps/min, respectively. Conclusions Consistent with our previous report in 21 to 40-year-old adults, cadence thresholds of 100 and 130 steps/min emerged as heuristic values associated with 3 and 6 METs, respectively, in 41 to 60-year-old adults. These values were selected based on their utility for public health messaging and on the trade-offs in classification accuracy parameters from both statistical methods. Findings will need to be confirmed in older adults and in free-living settings.en_US
dc.format.mediumelectronic
dc.format.mimetypeapplication/pdf
dc.identifier.citationTudor-Locke, C., Ducharme, S. W., Aguiar, E. J., Schuna, J. M., Jr, Barreira, T. V., Moore, C. C., Chase, C. J., Gould, Z. R., Amalbert-Birriel, M. A., Mora-Gonzalez, J., Chipkin, S. R., & Staudenmayer, J. (2020). Walking cadence (steps/min) and intensity in 41 to 60-year-old adults: the CADENCE-adults study. In International Journal of Behavioral Nutrition and Physical Activity (Vol. 17, Issue 1). Springer Science and Business Media LLC. https://doi.org/10.1186/s12966-020-01045-z
dc.identifier.doi10.1186/s12966-020-01045-z
dc.identifier.orcidhttps://orcid.org/0000-0003-2346-8776
dc.identifier.orcidhttps://orcid.org/0000-0003-3455-8419
dc.identifier.orcidhttps://orcid.org/0000-0001-7098-9844
dc.identifier.orcidhttps://orcid.org/0000-0003-4763-0491
dc.identifier.urihttps://ir.ua.edu/handle/123456789/11607
dc.languageEnglish
dc.language.isoen_US
dc.publisherBMC
dc.rights.licenseAttribution 4.0 International (CC BY 4.0)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectPhysical activity
dc.subjectPedometer
dc.subjectAccelerometer
dc.subjectExercise
dc.subjectSTEP
dc.subjectRECOMMENDATIONS
dc.subjectSPEED
dc.subjectNutrition & Dietetics
dc.subjectPhysiology
dc.titleWalking cadence (steps/min) and intensity in 41 to 60-year-old adults: the CADENCE-adults studyen_US
dc.typeArticle
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