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The development of an estimation model for energy expenditure during water walking by acceleration and walking speed
Journal article   Peer reviewed

The development of an estimation model for energy expenditure during water walking by acceleration and walking speed

Koichi Kaneda, Y Ohgi, Chiaki Tanaka and Brendan J Burkett
Journal of Science and Medicine in Sport, Vol.17(1), pp.96-101
2014
DOI: https://doi.org/10.1016/j.jsams.2013.02.004
url
https://doi.org/10.1016/j.jsams.2013.02.004View
Published Version
url
https://doi.org/10.1016/j.jsams.2016.05.004View
Correction

Abstract

resting metabolic rate internal energy expenditure external energy expenditure third-ordered equation power dimension
Objectives: The aim of this study was to develop an estimation equation for energy expenditure during water walking based on the acceleration and walking speed. Design: Cross-validation study. Methods: Fifty participants, males (n = 29, age: 27-73) and females (n = 21, age: 33-70) volunteered for this study. Based on their physical condition water walking was conducted at three self-selected walking speeds from a range of: 20, 25, 30, 35 and 40 m/min. Energy expenditure during each trial was calculated. During water walking, an accelerometer was attached to the occipital region and recorded three-dimensional accelerations at 100 Hz. A stopwatch was used for timing the participant's walking speed. The estimation model for energy expenditure included three components; (i) resting metabolic rate, (ii) internal energy expenditure for moving participants' body, and (iii) external energy expenditure due to water drag force. Results: When comparing the measured and estimated energy expenditure with the acceleration data being the third component of the estimation model, high correlation coefficients were found in both male (r = 0.73) and female (r = 0.77) groups. When walking speeds were applied to the third component of the model, higher correlation coefficients were found (r = 0.82 in male and r = 0.88 in female). Good agreements of the developed estimation model were found in both methods, regardless of gender. Conclusion: This study developed a valid estimation model for energy expenditure during water walking by using head acceleration and walking speed.

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