Association between cardiorespiratory fitness and cardiometabolic risk factors in Brazilian children and adolescents: the mediating role of obesity parameters.

Autor: Brand C; Graduate Program in Health Promotion, University of Santa Cruz do Sul, Santa Cruz do Sul, Brasil., Reuter CP; Graduate Program in Health Promotion, University of Santa Cruz do Sul, Santa Cruz do Sul, Brasil., Gaya AR; School of Physical Education, Physiotherapy and Dance, Federal University of Rio Grande do Sul, Porto Alegre, Brazil., Mota J; Faculty of Sport, University of Porto, Porto, Portugal., Duncan M; Biomolecular and Sports Sciences, Faculty of Health and Life Sciences, University of Coventry, Coventry, UK., Borfe L; School of Physical Education, Physiotherapy and Dance, Federal University of Rio Grande do Sul, Porto Alegre, Brazil., Pollo Renner JD; Graduate Program in Health Promotion, University of Santa Cruz do Sul, Santa Cruz do Sul, Brasil.
Jazyk: angličtina
Zdroj: Paediatrics and international child health [Paediatr Int Child Health] 2021 May; Vol. 41 (2), pp. 93-102. Date of Electronic Publication: 2020 Oct 28.
DOI: 10.1080/20469047.2020.1838758
Abstrakt: 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.
Databáze: MEDLINE
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