Erschienen in:
30.09.2021 | Original Article
Associations of higher TV viewing and low levels of cardiorespiratory fitness with cardiometabolic risk in children and adolescents
verfasst von:
João Francisco de Castro Silveira, Letícia Welser, Letícia de Borba Schneiders, Priscila Tatiana da Silva, Dulciane Nunes Paiva, James Philip Hobkirk, Sean Carroll, Cézane Priscila Reuter
Erschienen in:
Sport Sciences for Health
|
Ausgabe 2/2022
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Abstract
Background
A higher cardiometabolic risk has been associated with low cardiorespiratory fitness (CRF) levels and sedentary behaviours. However, most studies have focused predominantly on isolated behavioural, or CRF exposures.
Aim
The present study aimed to evaluate the joint association of self-reported, sedentary TV viewing and CRF with cardio-metabolic risk in schoolchildren.
Methods
Cross-sectional study with 2152 students (6–17 years old) from southern Brazil. Self-reported TV viewing and CRF were combined into a lifestyle-related exposure variable. Waist circumference, systolic blood pressure, glucose, and blood lipoprotein–lipids were determined and a clustered cardio-metabolic risk score (cCRS) was derived using internationally age and sex standardized Z-scores.
Results
In boys and girls, the median values of cCRS were significantly (p < 0.05) higher among those with unfit levels of CRF, independent of TV viewing. The higher cardio-metabolic risk status was 18.0% more prevalent in participants classified as unfit, regardless of TV viewing. However, the higher cCRS associated with poor fitness was attenuated following adjustments for the confounding effect of adiposity, pubertal status, and sociodemographic factors.
Conclusion
A higher cCRS prevalence was associated with low CRF levels, regardless of TV viewing. The association between higher CRF and the cardio-metabolic risk appeared to be attenuated by confounders, particularly adiposity.