Abstract
The purpose of this study was to use the measurement of the PAEE taken from Actiheart in order to calculate the TEE in Costa Rican schoolchildren, and at the same time, to determine the effectiveness when it is compared against the TEE obtained by the DLW. A total of sixteen male schoolchildren were measured for their total daily energy expenditure (TEE) with the doubly labeled water (DLW) technique. The TEE obtained by the Actiheart monitor was calculated and validated against the DWL. The TEE was obtained adding the physical activity energy expenditure given by the Actiheart, plus the basal metabolic rate, and the energy cost of growth. The Pearson’s product‐moment correlation coefficient and the paired t‐test sample were measured in order to identify the association of the data and to evidence the differences between both measurements of TEE respectively. The Lin’s concordance correlation coefficient and the Bland-Altman plot evaluated the concordance of both methods. The correlation between the TEE obtained by DLW and the one calculated by Actiheart was r = 0.97, P < 0.001. The paired t-test showed no significant differences between both methods. Lin’s concordance correlation coefficient was Cb = 0.99, classified as almost perfect. The study validated the TEE calculated with Actiheart against the TEE measured by the DLW.
Highlights
Modern lifestyles have turned more sedentary among children [1] [2]; this has been drawing the public’s attention [3] since there has been an increase in childhood obesity regardless of the socioeconomic and academic levels [4] [5].As a result of physical inactivity, there has been a decrease of the total energy expenditure (TEE) and childhood obesity has increased [1] [2]
That is why the screening of the energy expenditure (EE) in the condition of a free lifestyle is a fundamental matter for this study that deals with the etiology of obesity and of other chronic diseases [6]-[9]
The gold standard technique is high in cost; there are other devices that measure EE such as: heart rate monitors (HR) [9] [11], pedometers [12], and accelerometer monitors (AC) [13]
Summary
As a result of physical inactivity, there has been a decrease of the total energy expenditure (TEE) and childhood obesity has increased [1] [2]. The gold standard technique is high in cost; there are other devices that measure EE such as: heart rate monitors (HR) [9] [11], pedometers [12], and accelerometer monitors (AC) [13]. These devices are small, portable, non-invasive, and lower in cost. The readings of the total energy expenditure (TEE) obtained by these devices have been validated against the DWL readings [14]
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