1. Cardiometabolic thresholds for peak 30-min cadence and steps/day
- Author
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Katie Fidler, Bryan Adams, Aston K. McCullough, Catrine Tudor-Locke, Diana M. Thomas, Scott W. Ducharme, Christopher C. Moore, Elroy J. Aguiar, and Noah Demoes
- Subjects
Male ,Decision Analysis ,Epidemiology ,Physiology ,Health Status ,Blood Pressure ,Walking ,Logistic regression ,Cardiovascular System ,Vascular Medicine ,Biochemistry ,0302 clinical medicine ,Glucose Metabolism ,Risk Factors ,Accelerometry ,Medicine and Health Sciences ,Public and Occupational Health ,030212 general & internal medicine ,Metabolic Syndrome ,Multidisciplinary ,Middle Aged ,Nutrition Surveys ,Lipids ,Cholesterol ,Cardiology ,Medicine ,Engineering and Technology ,Carbohydrate Metabolism ,Female ,Cadence ,Management Engineering ,Research Article ,Adult ,medicine.medical_specialty ,Waist ,National Health and Nutrition Examination Survey ,Science ,Physical activity ,Research and Analysis Methods ,Fasting glucose ,03 medical and health sciences ,Internal medicine ,medicine ,Humans ,Receiver operating characteristic ,business.industry ,Biological Locomotion ,Decision Trees ,Biology and Life Sciences ,030229 sport sciences ,Physical Activity ,Health Surveys ,Metabolism ,ROC Curve ,Metabolic Disorders ,Medical Risk Factors ,business ,Body mass index - Abstract
PurposeTo provide empirically-supported thresholds for step-based intensity (i.e., peak 30-min cadence; average of the top 30 steps/min in a day) and steps/day in relation to cardiometabolic health outcomes.MethodsReceiver operating characteristic curve analysis was applied to the National Health and Nutrition Examination Survey (NHANES) 2005-2006 accelerometer-derived step data to determine steps/day and peak 30-min cadence as risk screening values (i.e., thresholds) for fasting glucose, body mass index, waist circumference, high blood pressure, triglycerides, and HDL cholesterol. Thresholds for peak 30-min cadence and steps/day were derived that, when exceeded, classify the absence of each cardiometabolic risk factor. Additionally, logistic regression models that included the influence of age and smoking were developed using the sample weights, primary sampling units (PSUs), and stratification variables provided by the NHANES survey. Finally, a decision tree analysis was performed to delineate criteria for at-risk versus healthy populations using cadence bands.ResultsPeak 30-min cadence thresholds across cardiometabolic outcomes ranged from 66-72 steps/min. Steps/day thresholds ranged from 4325-6192 steps/day. Higher thresholds were observed in men compared to women. In men, higher steps/day thresholds were observed in age ranges of 30-39, while in women, higher thresholds were observed in the age-range 50-59 years. Decision trees for classifying being at low risk for metabolic syndrome contained one risk-free leaf at higher cadence bands, specifically for any time accumulated at ≥120 steps/min.ConclusionsMinimum thresholds representing absence of cardiometabolic risk range from 4325-6192 steps/day and 66-72 steps/min for peak 30-min cadence. Any time accumulated at ≥120 steps/min was associated with an absence of cardiometabolic risk. Although based on cross-sectional data, these thresholds represent potentially important and clinically interpretable daily physical activity goals.
- Published
- 2019