Figure 3

Six-second average data immediately after fatiguing exercise (see the arrows in Figure 1 and Figure 2) as a measure of exercise-induced hemodynamic responses. All parameters were normalized/divided to their baselines (%), resulting in relative change of oxy- and deoxyhemoglobin concentration(r[HbO₂] and r[Hb]), total hemoglobin concentration (rTHC), oxygen saturation (rStO₂), blood flow (rBF), oxygen extraction fraction (rOEF) and oxygen consumption rate (rVO₂). The Student's t-test was used to compare the average rBF (n_HC = 23, n_FM = 14), r[HbO₂], r[Hb], rTHC, rStO₂, rOEF and rVO₂ (n_HC = 20, n_FM = 12) in subjects with fibromyalgia (FM) and healthy controls (HC) immediately after fatiguing exercise. *P < 0.05.