scholarly journals A Catalog of Rules, Variables, and Definitions Applied to Accelerometer Data in the National Health and Nutrition Examination Survey, 2003–2006

2012 ◽  
Author(s):  
C Tudor-Locke ◽  
SM Camhi ◽  
RP Troiano
Keyword(s):  
National Health ◽  
Accelerometer Data ◽  
Nutrition Examination Survey ◽  
Health And Nutrition

scholarly journals Measurement Considerations of Peak Stepping Cadence Measures Using National Health and Nutrition Examination Survey 2005–2006

2016 ◽  
Vol 13 (1) ◽  
pp. 44-52 ◽  
Author(s):  
Minsoo Kang ◽  
Youngdeok Kim ◽  
David A. Rowe
Keyword(s):  
Older Adults ◽  
National Health ◽  
Simulation Analysis ◽  
Optimal Number ◽  
Future Research ◽  
Accelerometer Data ◽  
Nutrition Examination Survey ◽  
Middle Aged ◽  
Health And Nutrition ◽  
Middle Aged Adults

Background:This study examined the optimal measurement conditions to obtain reliable peak cadence measures using the accelerometer-determined step data from the National Health and Nutrition Examination Survey 2005–2006.Methods:A total of 1282 adults (> 17 years) who provided valid accelerometer data for 7 consecutive days were included. The peak 1- and 30-minute cadences were extracted. The sources of variance in peak stepping cadences were estimated using Generalizability theory analysis. A simulation analysis was conducted to examine the effect of the inclusion of weekend days. The optimal number of monitoring days to achieve 80% reliability for peak stepping cadences were estimated.Results:Intraindividual variability was the largest variance component of peak cadences for young and middle-aged adults aged < 60 years (50.55%–59.24%) compared with older adults aged ≥ 60 years (31.62%–41.72%). In general, the minimum of 7 and 5 days of monitoring were required for peak 1- and 30-minute cadences among young and middle-aged adults, respectively, whereas 3 days of monitoring was sufficient for older adults to achieve the desired reliability (0.80). The inclusion of weekend days in the monitoring frame may not be practically important.Conclusions:The findings could be applied in future research as the reference measurement conditions for peak cadences.

scholarly journals Normative Peak 30-Min Cadence (Steps per Minute) Values for Older Adults: NHANES 2005–2006

2019 ◽  
Vol 27 (5) ◽  
pp. 625-632
Author(s):  
Elroy J. Aguiar ◽  
John M. Schuna ◽  
Tiago V. Barreira ◽  
Emily F. Mire ◽  
Stephanie T. Broyles ◽  
...  
Keyword(s):  
Older Adults ◽  
National Health ◽  
Age Groups ◽  
Normative Values ◽  
Accelerometer Data ◽  
Nutrition Examination Survey ◽  
Free Living ◽  
Best Effort ◽  
Health And Nutrition ◽  
Lms Method

Walking cadence (steps per minute) is associated with the intensity of ambulatory behavior. This analysis provides normative values for peak 30-min cadence, an indicator of “natural best effort” during free-living behavior. A sample of 1,196 older adults (aged from 60 to 85+) with accelerometer data from the National Health and Nutrition Examination Survey 2005–2006 was used. Peak 30-min cadence was calculated for each individual. Quintile-defined values were computed, stratified by sex and age groups. Smoothed sex-specific centile curves across the age span were fitted using the LMS method. Peak 30-min cadence generally trended lower as age increased. The uppermost quintile value was >85 steps/min (men: 60–64 years), and the lowermost quintile value was <22 steps/min (women: 85+). The highest 95th centile value was 103 steps/min (men: 64–70 years), and the lowest 5th centile value was 15 steps/min (women: 85+). These normative values may be useful for evaluating older adults’ “natural best effort” during free-living ambulatory behavior.

Peak Stepping Cadence in Free-Living Adults: 2005–2006 NHANES

2012 ◽  
Vol 9 (8) ◽  
pp. 1125-1129 ◽  
Author(s):  
Catrine Tudor-Locke ◽  
Meghan M. Brashear ◽  
Peter T. Katzmarzyk ◽  
William D. Johnson
Keyword(s):  
Body Mass Index ◽  
National Health ◽  
Accelerometer Data ◽  
Nutrition Examination Survey ◽  
Descriptive Epidemiology ◽  
Ambulatory Activity ◽  
Free Living ◽  
Cross Sectional ◽  
Health And Nutrition ◽  
Naturally Occurring

Background: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).Methods:Minute-by-minute step data were rank ordered each day to identify the peak 30-minute and 1-minute cadences for 3522 adults (20+ years of age) with complete sex, age, and BMI data and at least 1 valid day (ie, 10/24 hours of accelerometer wear) of accelerometer data. Peak values were averaged across days within participants by sex, age, and BMI-defined categories.Results:U.S. adults average a peak 30-minute cadence of 71.1 (men: 73.7, women: 69.6, P < .0001) steps/min and a peak 1-minute cadence of 100.7 (men: 100.9, women: 100.5, P = .54) steps/min. Both peak cadence indicators displayed significant and consistent declines with age and increasing levels of obesity.Conclusions: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.

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