Association between cardiorespiratory fitness and cardiometabolic risk factors in Brazilian children and adolescents: the mediating role of obesity parameters.
Caroline Brand, Cézane Priscila Reuter, Anelise Reis Gaya, Jorge Mota, Michael Duncan, Leticia Borfe, Jane Dagmar Pollo Renner
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引用次数: 3
Abstract
Background: There is a lack of clarity as to which obesity parameters may be more important in the association between cardiorespiratory fitness (CRF) and cardiometabolic risk factors (CMRF).
Aim: To verify the mediating role of different obesity parameters on the association between CRF and CMRF in normal weight and overweight/obese children and adolescents.
Methods: This cross-sectional study comprised 999 children and adolescents (534 boys) aged 7-14 years from the south of Brazil. Body mass index (BMI), waist circumference (WC), waist-to-height ratio (WHtR) and percentage of body fat were assessed. Participants were classified as normal weight, overweight and obese according to BMI. CRF was evaluated by the 6-minute run/walk test. . A continuous CMRF score was calculated by summing the Z-scores of the following variables: systolic and diastolic blood pressure, glucose, total cholesterol, high-density lipoprotein cholesterol and triglycerides. Data analysis was performed using partial correlation and linear regression models.
Results: BMI, WC, WHtR and percentage of body fat mediated the relationship between CRF and CMRF in overweight/obese boys and girls but not those of normal weight. Additionally, the percentage of the influence of each obesity parameter was 20% for BMI and WC, 16% for percentage of body fat and 18% for WHtR in girls. For boys, the mediation effect was 25% for BMI, 26% for WC, 28% for percentage of body fat and 25% for WHtR.
Conclusion: Adiposity plays a central role in CMRF; therefore, maintaining an adequate weight status should be an important objective of health-promoting programmes in early age.
Abbreviations: CMRF, cardiometabolic risk factors; CRF, cardiorespiratory fitness; BMI. body mass index; HDL-c, high-density lipoprotein cholesterol, PROCESS PROESP-Br, Projeto Esporte Brasil; SPSS, Package for Social Sciences; TC, total cholesterol; TG, triglycerides; WC, waist circumference; WHtR, waist-to-height ratio; %BF, percentage of body fat.
背景:在心肺适能(CRF)和心脏代谢危险因素(CMRF)之间的关联中，哪些肥胖参数可能更重要，目前尚不清楚。目的:验证不同肥胖参数对正常体重和超重/肥胖儿童青少年CRF和CMRF相关性的中介作用。方法:这项横断面研究包括来自巴西南部7-14岁的999名儿童和青少年(534名男孩)。评估身体质量指数(BMI)、腰围(WC)、腰高比(WHtR)和体脂百分比。根据体重指数，参与者被分为正常体重、超重和肥胖。通过6分钟跑/走测试评估CRF。连续的CMRF评分是通过将以下变量的z得分相加来计算的:收缩压和舒张压、葡萄糖、总胆固醇、高密度脂蛋白胆固醇和甘油三酯。数据分析采用偏相关和线性回归模型。结果:BMI、WC、WHtR和体脂百分比介导了超重/肥胖男孩和女孩的CRF和CMRF之间的关系，而正常体重的男孩和女孩则没有。此外，每个肥胖参数的影响百分比在女孩中BMI和WC为20%，体脂百分比为16%，WHtR为18%。对于男孩来说，BMI的中介效应为25%，腰围为26%，体脂百分比为28%，腰围为25%。结论:肥胖在CMRF中起核心作用;因此，保持适当的体重状况应该是早期促进健康规划的一个重要目标。缩写词:CMRF，心脏代谢危险因素;CRF，心肺适能;BMI。身体质量指数;HDL-c，高密度脂蛋白胆固醇，PROCESS prosp - br，巴西体育项目;SPSS, Package for Social Sciences;TC，总胆固醇;TG,甘油三酸酯;WC，腰围;WHtR:腰高比;%BF，体脂百分比。
期刊介绍：
Paediatrics and International Child Health is an international forum for all aspects of paediatrics and child health in developing and low-income countries. The international, peer-reviewed papers cover a wide range of diseases in childhood and examine the social and cultural settings in which they occur. Although the main aim is to enable authors in developing and low-income countries to publish internationally, it also accepts relevant papers from industrialised countries. The journal is a key publication for all with an interest in paediatric health in low-resource settings.
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