Association between Fractional Oxygen Extraction from Resting Quadriceps Muscle and Body Composition in Healthy Men
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Fecha
2023-12
Profesor/a Guía
Facultad/escuela
Idioma
en_US
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Editor
Multidisciplinary Digital Publishing Institute (MDPI)
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Licencia CC
ATRIBUCIÓN 4.0 INTERNACIONAL
Licencia CC
https://creativecommons.org/licenses/by/4.0/deed.es
Resumen
This study aimed to associate body composition with fractional oxygen extraction at rest in healthy adult men. Fourteen healthy adults (26.93 ± 2.49 years) from Chile participated. Body composition was assessed with octopole bioimpedance, and resting muscle oxygenation was evaluated in the vastus lateralis quadriceps with near-infrared spectroscopy (NIRS) during a vascular occlusion test, analyzing the muscleVO2, resaturation velocity during reactive hyperemia via the muscle saturation index (%TSI), and the area above the curve of HHb (AACrep). It was observed that the total and segmented fat mass are associated with lower reoxygenation velocities during hyperemia (p = 0.008; β = 0.678: p = 0.002; β = 0.751), and that the total and segmented skeletal muscle mass are associated with higher reoxygenation velocities during hyperemia (p = 0.020; β = −0.614: p = 0.027; β = −0.587). It was also observed that the total and segmented fat mass were associated with a higher area above the curve of HHb (AACrep) during hyperemia (p = 0.007; β = 0.692: p = 0.037; β = 0.564), and that total and segmented skeletal muscle mass was associated with a lower area above the curve of HHb (AACrep) during hyperemia (p = 0.007; β = −0.703: p = 0.017; β = −0.632). We concluded that fat mass is associated with lower resaturation rates and lower resting fractional O2 extraction levels. In contrast, skeletal muscle mass is associated with higher resaturation rates and fractional O2 extraction during reactive hyperemia. The AACrep may be relevant in the evaluation of vascular adaptations to exercise and metabolic health.
Notas
Indexación: Scopus.
Palabras clave
body composition, cell respiration, health, near-infrared, spectroscopy
Citación
Journal of Functional Morphology and Kinesiology Volume 8, Issue 4 December 2023 Article number 149
DOI
10.3390/jfmk8040149