Portal de investigação
Impact of physical activity on redox status and nitric oxide bioavailability in nonoverweight and overweight/obese prepubertal children
Data de publicação:
Autores da FMUP
Participantes de fora da FMUP
- Leite Almeida, L
- Morato, M.
- Cosme, D
- Afonso, J
- Areias, J.
- Guerra, A
- Afonso, AC
- Albino Teixeira, A
- Correia Costa, L
Unidades de investigação
Abstract
Nutritional status might contribute to variations induced by physical activity (PA) in redox status biomarkers. We investigated the influence of PA on redox status and nitric oxide (NO) production/metabolism biomarkers in nonoverweight and overweight/obese prepubertal children. We performed a cross-sectional evaluation of 313 children aged 8-9 years (163 nonoverweight, 150 overweight/obese) followed since birth in a cohort study (Generation XXI, Porto, Portugal). Plasma total antioxidant status (P-TAS), plasma and urinary isoprostanes (P-Isop, U-Isop), urinary hydrogen peroxide (U-H2O2), myeloperoxidase (MPO) and plasma and urinary nitrates and nitrites (P-NOx, U-NOx) were assessed, as well as their association with variables of reported PA quantification (categories of PA frequency (>1x/week and <= 1x/week)and continuous PA index (obtained by the sum of points)) in a questionnaire with increasing ranks from sedentary to vigorous activity levels. U-NOx was significantly higher in children who presented higher PA index scores and higher PA frequency. Separately by BMI classes, U-NOx was significantly higher only in nonoverweight children who practiced PA more frequently (p = 0.037). In overweight/obese children, but not in nonoverweight, P-TAS was higher among children with higher PA frequency (p = 0.007). Homeostasis model assessment index (HOMA-IR) was significantly lower in more active overweight/obese children, but no differences were observed in nonoverweight children. In the fully adjusted multivariate linear regression models for P-TAS, in the overweight/obese group, children with higher PA frequency presented higher P-TAS. In the U-NOx models, U-NOx significantly increased with PA index, only in nonoverweight children. Our results provide additional evidence in support of a protective effect of physical activity, in nonoverweight by increasing NO bioavailability and in overweight/obese children by enhancing systemic antioxidant capacity and insulin sensitivity. These results highlight the importance of engaging in regular physical exercise, particularly among overweight/obese children, in which a positive association between oxidant status and cardiometabolic risk markers has been described.
Dados da publicação
- ISSN/ISSNe:
- 0891-5849, 1873-4596
- Tipo:
- Article
- Páginas:
- 116-124
- Link para outro recurso:
- www.scopus.com
Free Radical Biology and Medicine Elsevier Inc.
Citações Recebidas na Web of Science: 6
Citações Recebidas na Scopus: 7
Documentos
- Não há documentos
Filiações
Keywords
- Childhood obesity; Oxidative stress; Nitric oxide; Antioxidant capacity; Cardiometabolic risk factors; Physical activity; Exercise
Financiamento
Proyectos asociados
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Investigador Principal: Teresa Maria de Jesus Teixeira de Sousa
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Investigador Principal: Teresa Maria de Jesus Teixeira de Sousa
Estudo Clínico Académico (Endocan) . 2020
Citar a publicação
Leite L,Morato M,Cosme D,Afonso J,Areias J,Guerra A,Afonso AC,Albino A,Sousa T,Correia L. Impact of physical activity on redox status and nitric oxide bioavailability in nonoverweight and overweight/obese prepubertal children. Free Radic. Biol. Med. 2021. 163. p. 116-124. IF:8,101. (1).
