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Assessment of the 5-Minute Oxygen Uptake Efficiency Slope in Children With Obesity. | LitMetric

AI Article Synopsis

Article Abstract

Purpose: Poor cardiorespiratory fitness is associated with increased all cause morbidity and mortality. In children with obesity, maximum oxygen uptake (V̇O) may not be achieved due to reduced motivation and peripheral fatigue. We aimed to identify a valid submaximal surrogate for V̇O in children with obesity.

Method: Ninety-two children with obesity (7-16 years) completed a maximal exercise treadmill test and entered a three-month exercise and/or nutrition intervention after which the exercise test was repeated (n = 63). Participants were required to reach V̇O to be included in this analysis (n = 32 at baseline and n = 13 at both time-points). The oxygen uptake efficiency slope (OUES) was determined as the slope of the line when V̇O (L/min) was plotted against log V̇E. Associations between the maximal OUES, submaximal OUES (at 3, 4, 5 and 6 min of the exercise test) and V̇O were calculated.

Results: In the cross-sectional analysis, V̇O (L/min) was strongly correlated with 5-min OUES independent of Tanner puberty stage and sex (R = .80, p < .001). Longitudinal changes in V̇O were closely reflected by changes in 5-min OUES independent of change in percent body fat (R = .63, p < .05).

Conclusion: The 5-min OUES is a viable alternative to V̇O when assessing children with obesity.

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Source
http://dx.doi.org/10.1123/pes.2016-0248DOI Listing

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