Spatial heterogeneity of anaerobic threshold in exercsing muscles

研究肌肉内部和肌肉之间 O2 输送 (Qo2)-O2 利用 (Vo2) 的相对匹配对于解决血管和代谢控制以及运动开始时 O2 缺乏的机制基础至关重要。肌肉氧合/脱氧反映了Qo2和Vo2之间的平衡，即Qo2/Vo2比率（或Vo2/Qo2作为脱氧）。因此，肌肉脱氧的空间异质性概况，例如，运动开始后，可以提供有关血管反应是否充分以及驱动血液-肌肉 O2 通量所必需的 O2 压力的重要信息。

Investigation of the relative matching of O2 delivery (Qo2)-O2 utilization (Vo2) within and among muscles is crucial for resolving the mechanistic bases for vascular and metabolic control and O2 deficit at the onset of exercise. Muscle oxygenation/deoxygenation reflects the balance between Qo2 and Vo2, i.e., Qo2/Vo2 ratio (or Vo2/Qo2 as deoxygenation). Thus, the profile of spatial heterogeneity of muscle deoxygenation, for example, following the onset of exercise can provide important information regarding the adequacy of the vascular response and the O2 pressures essential for driving blood-muscle O2 flux.