Repositorio UFRO · Omeka S

The Mediating Role of the Muscle Quality Index in the Relation of Screen Time and Abdominal Obesity with Health-Related Quality of Life in Chilean Schoolchildren

Primer Autor	Caamaño-Navarrete, Felipe
Co-autores	Delgado-Floody, Pedro Gomez-Lopez, Manuel Valdes-Badilla, Pablo Jerez-Mayorga, Daniel
Título	The Mediating Role of the Muscle Quality Index in the Relation of Screen Time and Abdominal Obesity with Health-Related Quality of Life in Chilean Schoolchildren
Editorial	MDPI
Revista	NUTRIENTS
Lenguaje	en
Resumen	Screen time (ST) and abdominal obesity have a negative effect on health-related quality of life (HRQoL). However, there is little information regarding the mediating role of the muscle quality index (MQI) in these relationships. The aim of the present study was to investigate the association between HRQoL, physical status (i.e., anthropometrics and fitness), lifestyle (i.e., ST and physical activity), and the MQI, and then to determine the potential mediating role of the MQI in the relation of ST and abdominal obesity with HRQoL in Chilean schoolchildren. The cross-sectional study included 750 schoolchildren (girls, n = 332 and boys, n = 418) aged between 10 and 14 years (11.73 +/- 1.08 y). MQI, lifestyle, fitness parameters, waist-to-height ratio (WtHR) and HRQoL were measured. HRQoL presented a significant correlation with WtHR (r: -0.19), VO2(max) (r: 0.20), physical activity after school (r: 0.26), ST (r: -0.26) and MQI (r: 0.15). According to MQI, the high-MQI group reported higher HRQoL than the low-MQI group (low MQI: 36.10 +/- 3.63 vs. high MQI: 37.43 +/- 4.00, p < 0.001). In the mediation model, ST and abdominal obesity were negatively linked to HRQoL, the indirect effect confirmed that MQI is a partial mediator in the relation between ST and HRQoL (indirect effect = -0.04, SE = 0.02, 95% CI: -0.09, -0.01) and in the relation between abdominal obesity and HRQoL (indirect effect = -1.81, SE = 0.83, 95% CI: -3.41, -0.40). In conclusion, MQI is related to better HRQoL in schoolchildren, and the negative relation of ST and abdominal obesity with HRQoL is mediated by MQI.
Fecha Publicación	2023
Tipo de Recurso	artículo original
doi	10.3390/nu15030714
Formato Recurso	PDF
Palabras Claves	muscle quality index fitness schoolchildren quality of life
Ubicación del archivo	http://dx.doi.org/10.3390/nu15030714
Categoría OCDE	Nutrición y Dietética
Materias	índice de calidad muscular aptitud física escolares calidad de vida
Identificador del recurso (Mandatado-único)	artículo original
Versión del recurso (Recomendado-único)	versión publicada
License	CC BY 4.0
Condición de la licencia (Recomendado-repetible)	CC BY 4.0
Derechos de acceso	acceso abierto
Access Rights	acceso abierto
Id de Web of Science	WOS:000932968500001
Tipo de ruta	verde# dorado
Categoría WOS	Nutrición y Dietética