Association between Fractional Oxygen Extraction from Resting Quadriceps Muscle and Body Composition in Healthy Men

Rodrigo Yáñez-Sepúlveda, Jorge Olivares-Arancibia, Guillermo Cortés-Roco, Aldo Vasquez-Bonilla, Matías Monsalves-Álvarez, Ildefonso Alvear-Órdenes, Marcelo Tuesta

Research output: Contribution to journalArticlepeer-review

Abstract

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.

Original languageEnglish
Article number149
JournalJournal of Functional Morphology and Kinesiology
Volume8
Issue number4
DOIs
Publication statusPublished - Dec 2023

Keywords

  • body composition
  • cell respiration
  • health
  • near-infrared
  • spectroscopy

ASJC Scopus subject areas

  • Anatomy
  • Rheumatology
  • Histology
  • Orthopedics and Sports Medicine
  • Physical Therapy, Sports Therapy and Rehabilitation

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