Estimation of energy expenditure by a portable accelerometer

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Abstract
Accelerometer on the waist. A movement counter (mercury switch), which is available commercially, was also worn on the waist and another was worn on the left wrist. The reproducibility of the accelerometer readings was high (4 subjects, 14 activities; r=0.94) and was superior to either the waist movement counter (r=0.63) or the wrist movement counter (r=0.74). In estimating oxygen requirement (Vo2) the standard error of estimate, based on 21 subjects and 14 activities, was 6.6 ml·min-1·kg-1 for the accelerometer. This was also better (smaller) than for the waist movement counter (9.2 ml·min-1·kg-1) or for the wrist movement counter (7.9 ml·min-1·kg-1). ©1983The American College of Sports Medicine...

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