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Title: Peak stepping cadence in free-living adults: 2005-2006 NHANES

Author
item TUDOR-LOCKE, CATRINE - Pennington Biomedical Research Center
item BRASHEAR, MEAGHAN - Pennington Biomedical Research Center
item KATZMARZYK, PETER - Pennington Biomedical Research Center
item JOHNSON, WILLIAM - Pennington Biomedical Research Center

Submitted to: Journal of Physical Activity and Health
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 8/12/2011
Publication Date: 9/1/2012
Citation: Tudor-Locke, C., Brashear, M., Katzmarzyk, P.T., Johnson, W.D. 2012. Peak stepping cadence in free-living adults: 2005-2006 NHANES. Journal of Physical Activity and Health. 9:1125-1129.

Interpretive Summary: Cadence (steps/minute) is related to walking speed and intensity of physical activity. The purpose of this analysis of data from the 2005-2006 National Health and Nutrition Examination Survey (NHANES) was to identify the population-based traits (such as sex, age, and body mass index) associated with peak 30-minute cadence (defined as the average steps/min recorded for the 30 highest, but not necessarily consecutive, minutes in a day) and peak 1-minute cadence (defined as the steps/min recorded for the highest single minute in a day). U.S. adults average a peak 30-minute cadence of 71.1 (Men: 73.7, Women: 69.6) steps/min and a peak 1-minute cadence of 100.7 (Men: 100.9, Women: 100.5) steps/min. Both peak cadence indicators displayed significant and consistent declines with age and increasing levels of obesity.

Technical Abstract: Analysis of the 2005-2006 National Health and Nutrition Examination Survey (NHANES) accelerometer data provides the descriptive epidemiology of peak 30-minute cadence (defined as the average steps/min recorded for the 30 highest, but not necessarily consecutive, minutes in a day) and peak 1-minute cadence (defined as the steps/min recorded for the highest single minute in a day) by sex, age, and body mass index (BMI). Minute-by-minute step data were rank ordered each day to identify the peak 30-minute and 1-minute cadences for 3,522 adults (20+ years of age) with complete sex, age, and BMI data and at least 1 valid day (i.e., 10/24 hours of accelerometer wear) of accelerometer data. Peak values were averaged across days within participants by sex, age, and BMI-defined categories. U.S. adults average a peak 30-minute cadence of 71.1 (Men: 73.7, Women: 69.6, p<0.0001) steps/min and a peak 1-minute cadence of 100.7 (Men: 100.9, Women: 100.5, p=0.54) steps/min. Both peak cadence indicators displayed significant and consistent declines with age and increasing levels of obesity. Peak cadence indicators capture the highest intensity execution of naturally occurring ambulatory activity. Future examination of their relationship with health parameters using cross-sectional, longitudinal, and intervention designs is warranted.