The use of submaximal parameters in the assessment of exercise capacity in children with obesity

IF 2.7 3区医学 Q1 PEDIATRICS

Pediatric Obesity Pub Date : 2025-01-06 DOI:10.1111/ijpo.13201

K. Peled, Einat Kodesh, Merav Zucker-Toledano, R. Bar-Yoseph, S. Borik-Chiger, Gur Mainzer

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引用次数: 0

Abstract

Background

Peak oxygen uptake (VO₂) is considered the most important indicator of aerobic exercise capacity during cardiopulmonary exercise testing (CPET). However, its accuracy is compromised when maximal effort is not achieved. In such cases, submaximal parameters can serve as surrogates for assessing exercise performance.

Objectives

To compare the differences in maximal and submaximal exercise parameters between children with obesity and normal weight.

Methods

A prospective study evaluating CPET using a treadmill completed by children with and without obesity.

Results

A total of 153 children (50.9% females) were divided into two groups: obese (n = 87) and non-obese (n = 66). Children with obesity achieved lower exercise capacity (peakVO₂ of 68% ± 16% vs. 89% ± 15%; p < 0.0001) with fewer achieving maximal effort (26.4% vs. 78.7%, respectively). VO₂-derived submaximal parameters showed a significantly lower oxygen uptake efficiency slope per body weight (OUES/kg) (30.5 ± 6.1 vs. 39.0 ± 9.5; p < 0.0001) and lower VO₂ at ventilatory threshold (VO₂@AT) (21.2 ± 4.6 vs. 26.4 ± 5.3, p = 0.0001) in the obese group, with no significant differences in the CO₂-derived parameters.

Conclusions

Maximal exercise data in children with obesity is frequently unavailable due to failure to achieve maximal effort. Submaximal parameters, such as OUES and VO₂@AT, may be useful substitute options for assessing the health and functional level of this population.

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使用亚极限参数评估肥胖儿童的运动能力

背景峰值摄氧量（VO2）被认为是心肺运动测试（CPET）中衡量有氧运动能力的最重要指标。然而，如果不能达到最大努力，其准确性就会大打折扣。在这种情况下，亚极限参数可作为评估运动能力的替代指标。目的比较肥胖儿童和正常体重儿童在最大运动量和亚最大运动量参数上的差异。方法一项前瞻性研究，评估肥胖儿童和非肥胖儿童使用跑步机完成 CPET 的情况。结果共有 153 名儿童（50.9% 为女性）被分为两组：肥胖（87 人）和非肥胖（66 人）。肥胖儿童的运动能力较低（峰值 VO2 为 68% ± 16% 对 89% ± 15%；p < 0.0001），达到最大努力的儿童较少（分别为 26.4% 对 78.7%）。由 VO2 导出的次最大值参数显示，肥胖组的单位体重摄氧效率斜率（OUES/kg）（30.5 ± 6.1 vs. 39.0 ± 9.5；p <；0.0001）和通气阈值 VO2（VO2@AT）（21.2 ± 4.6 vs. 26.4 ± 5.3，p = 0.0001）显著较低，而二氧化碳导出参数则无显著差异。结论肥胖症儿童的最大运动量数据经常因无法达到最大运动量而无法获得。OUES和VO2@AT等次最大运动参数可能是评估该人群健康和功能水平的有用替代选项。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Pediatric Obesity PEDIATRICS-

CiteScore

7.30

自引率

5.30%

发文量

117

审稿时长

6-12 weeks

期刊介绍： Pediatric Obesity is a peer-reviewed, monthly journal devoted to research into obesity during childhood and adolescence. The topic is currently at the centre of intense interest in the scientific community, and is of increasing concern to health policy-makers and the public at large. Pediatric Obesity has established itself as the leading journal for high quality papers in this field, including, but not limited to, the following: Genetic, molecular, biochemical and physiological aspects of obesity – basic, applied and clinical studies relating to mechanisms of the development of obesity throughout the life course and the consequent effects of obesity on health outcomes Metabolic consequences of child and adolescent obesity Epidemiological and population-based studies of child and adolescent overweight and obesity Measurement and diagnostic issues in assessing child and adolescent adiposity, physical activity and nutrition Clinical management of children and adolescents with obesity including studies of treatment and prevention Co-morbidities linked to child and adolescent obesity – mechanisms, assessment, and treatment Life-cycle factors eg familial, intrauterine and developmental aspects of child and adolescent obesity Nutrition security and the "double burden" of obesity and malnutrition Health promotion strategies around the issues of obesity, nutrition and physical activity in children and adolescents Community and public health measures to prevent overweight and obesity in children and adolescents.