Determination of step rate thresholds corresponding to physical activity intensity classifications in adults

Abel, M. G . and Hannon , J. C. and Mullineaux, David and Beighle, A. (2011) Determination of step rate thresholds corresponding to physical activity intensity classifications in adults. Journal of Physical Activity and Health, 8 (1). pp. 45-51. ISSN 1543-3080

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Determination of step rate thresholds corresponding to physical activity intensity classifications in adults
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Official URL: http://journals.humankinetics.com/jpah-back-issues...

Abstract

Current recommendations call for adults to be physically active at moderate and/or vigorous intensities. Given the popularity of walking and running, the use of step rates may provide a practical and inexpensive means to evaluate ambulatory intensity. Thus, the purpose of this study was to identify step rate thresholds that correspond to various intensity classifications. Methods: Oxygen consumption was measured at rest and during 10 minute treadmill walking and running trials at 6 standardized speeds (54, 80, 107, 134,
161, and 188 m∙min-1) in 9 men and 10 women (28.8 ± 6.8 yrs). Two observers counted the participants’ steps
at each treadmill speed. Linear and nonlinear regression analyses were used to develop prediction equations
to ascertain step rate thresholds at various intensities. Results: Nonlinear regression analysis of the metabolic
cost versus step rates across all treadmill speeds yielded the highest R2 values for men (R2 = .91) and women
(R2 = .79). For men, the nonlinear analysis yielded 94 and 125 step∙min-1 for moderate and vigorous intensities,
respectively. For women, 99 and 135 step∙min-1 corresponded with moderate and vigorous intensities, respectively. Conclusions: Promoting a step rate of 100 step∙min-1 may serve as a practical public health recommendation to exercise at moderate intensity.

Item Type:Article
Keywords:exercise, pedometer, running, walking
Subjects:C Biological Sciences > C600 Sports Science
Divisions:College of Social Science > School of Sport and Exercise Science
ID Code:4711
Deposited By: Alison Wilson
Deposited On:07 Oct 2011 14:50
Last Modified:05 Dec 2013 10:23

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