Enhancing oxygenation of patients with coronavirus disease 2019: Effects on immunity and other health-related conditions

Figure 3 Effect of increasing the aerobic capacity on psycho-immune hormones. This diagram illustrates the possible mechanisms of increasing oxygenation capacity in improving the psycho-immune hormones and immunity. These possible mechanisms include decreasing serum glucocorticoids and insulin sensitivity and increasing glucocorticoids and oxytocin hormones. HPA: Hypothalamic-pituitary-adrenal; NK: Natural killer.