Yáñez-Sepúlveda Rodrigo, Olivares-Arancibia Jorge, Cortés-Roco Guillermo, Vasquez-Bonilla Aldo, Monsalves-Álvarez Matías, Alvear-Órdenes Ildefonso, Tuesta Marcelo
Faculty Education and Social Sciences, Universidad Andres Bello, Viña del Mar 2520000, Chile.
Grupo AFySE, Investigación en Actividad Física y Salud Escolar, Escuela de Pedagogía en Educación Física, Facultad de Educación, Universidad de las Américas, Santiago 8320000, Chile.
J Funct Morphol Kinesiol. 2023 Oct 26;8(4):149. doi: 10.3390/jfmk8040149.
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 muscleVO, 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 ( = 0.008; β = 0.678: = 0.002; β = 0.751), and that the total and segmented skeletal muscle mass are associated with higher reoxygenation velocities during hyperemia ( = 0.020; β = -0.614: = 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 ( = 0.007; β = 0.692: = 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 ( = 0.007; β = -0.703: = 0.017; β = -0.632). We concluded that fat mass is associated with lower resaturation rates and lower resting fractional O extraction levels. In contrast, skeletal muscle mass is associated with higher resaturation rates and fractional O extraction during reactive hyperemia. The AACrep may be relevant in the evaluation of vascular adaptations to exercise and metabolic health.
本研究旨在探讨健康成年男性静息状态下身体成分与氧摄取分数之间的关系。来自智利的14名健康成年人（26.93±2.49岁）参与了研究。采用八极生物电阻抗法评估身体成分，并在血管闭塞试验期间，通过近红外光谱（NIRS）对股外侧肌的静息肌肉氧合进行评估，分析肌肉VO、通过肌肉饱和度指数（%TSI）评估反应性充血期间的再饱和速度，以及HHb曲线以上的面积（AACrep）。研究发现，总体脂肪量和分段脂肪量与充血期间较低的再氧合速度相关（=0.008；β=0.678：=0.002；β=0.751），而总体骨骼肌量和分段骨骼肌量与充血期间较高的再氧合速度相关（=0.020；β=-0.614：=0.027；β=-0.587）。还观察到，总体脂肪量和分段脂肪量与充血期间HHb曲线以上的面积（AACrep）较高相关（=0.007；β=0.692：=0.037；β=0.564），而总体骨骼肌量和分段骨骼肌量与充血期间HHb曲线以上的面积（AACrep）较低相关（=0.007；β=-0.703：=0.017；β=-0.632）。我们得出结论，脂肪量与较低的再饱和率和较低的静息氧摄取分数水平相关。相比之下，骨骼肌量与反应性充血期间较高的再饱和率和氧摄取分数相关。AACrep可能在评估血管对运动的适应性和代谢健康方面具有相关性。
