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Calibration of the Computer Science and Applications, Inc. accelerometer.

Author information

Affiliations

  • 1. University of Massachusetts, Department of Exercise Science, Amherst 01003, USA.
      Authors
    • Freedson PS 1
    (1 author)

Medicine and Science in Sports and Exercise, 01 May 1998, 30(5):777-781
https://doi.org/10.1097/00005768-199805000-00021 PMID: 9588623 

Abstract 

Purpose

We established accelerometer count ranges for the Computer Science and Applications, Inc. (CSA) activity monitor corresponding to commonly employed MET categories.

Methods

Data were obtained from 50 adults (25 males, 25 females) during treadmill exercise at three different speeds (4.8, 6.4, and 9.7 km x h(-1)).

Results

Activity counts and steady-state oxygen consumption were highly correlated (r = 0.88), and count ranges corresponding to light, moderate, hard, and very hard intensity levels were < or = 1951, 1952-5724, 5725-9498, > or = 9499 cnts x min(-1), respectively. A model to predict energy expenditure from activity counts and body mass was developed using data from a random sample of 35 subjects (r2 = 0.82, SEE = 1.40 kcal x min(-1)). Cross validation with data from the remaining 15 subjects revealed no significant differences between actual and predicted energy expenditure at any treadmill speed (SEE = 0.50-1.40 kcal x min(-1)).

Conclusions

These data provide a template on which patterns of activity can be classified into intensity levels using the CSA accelerometer.

Full text links 

Read article at publisher's site: https://doi.org/10.1097/00005768-199805000-00021

Read article for free, from open access legal sources, via Unpaywall: https://journals.lww.com/acsm-msse/Fulltext/1998/05000/Calibration_of_the_Computer_Science_and.21.aspxUnpaywall

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