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Cardiometabolic thresholds for peak 30-min cadence and steps/day
Bryan Adams1, Katie Fidler1, Noah Demoes1
1Department of Mathematical Sciences, United States Military Academy, West Point, New York, United States of America.
Plos One
|August 3, 2019
Summary
Establishing physical activity thresholds is key for cardiometabolic health. Daily steps between 4325-6192 and peak 30-min cadence of 66-72 steps/min indicate an absence of risk.
Area of Science:
- Public Health
- Exercise Physiology
- Biostatistics
Background:
- Cardiometabolic risk factors are a significant public health concern.
- Establishing clear physical activity guidelines is crucial for disease prevention.
- Previous research has lacked empirically-supported thresholds for step-based intensity and daily steps.
Purpose of the Study:
- To determine empirically-supported thresholds for step-based intensity (peak 30-min cadence) and steps/day in relation to cardiometabolic health.
- To identify risk screening values for key cardiometabolic outcomes using accelerometer data.
Main Methods:
- Utilized Receiver Operating Characteristic (ROC) curve analysis on National Health and Nutrition Examination Survey (NHANES) accelerometer data (2005-2006).
- Derived thresholds for peak 30-min cadence and steps/day associated with the absence of cardiometabolic risk factors.
- Employed logistic regression and decision tree analyses, accounting for covariates like age and smoking.
Main Results:
- Peak 30-min cadence thresholds ranged from 66-72 steps/min; steps/day thresholds ranged from 4325-6192 steps/day.
- Higher thresholds were observed in men versus women, with age-specific variations noted.
- Accumulating any time at ≥120 steps/min was linked to an absence of cardiometabolic risk.
Conclusions:
- Minimum thresholds for absence of cardiometabolic risk are 4325-6192 steps/day and 66-72 steps/min for peak 30-min cadence.
- High-intensity activity (≥120 steps/min) is strongly associated with reduced cardiometabolic risk.
- These derived thresholds offer clinically interpretable daily physical activity goals for public health.
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