The Effect of Electroacupuncture with Different Frequencies on Muscle Oxygenation in Humans

Figure 4

(a) Peak tissue oxygenation index (TOI) and (b) normalized tissue hemoglobin index (nTHI) values during recovery period at control, 1 Hz, and 20 Hz. Peak TOI and nTHI values were significantly higher at 20 Hz, compared with those at the control and 1 Hz. Significant difference from control or 1 Hz (). There was significant difference in peak TOI values between control and 1 Hz (). There was no difference in peak nTHI values between control and 1 Hz. Values are mean ± SEM.

(a)

(b)