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Relationship between motor cortex hemoglobin difference (Hbdiff) and piano scores. Significant positive relationships were detected when combining all exercise data (A) and with the addition of the control data (B). High-intensity interval training data. Moderate-intensity training data. Control data. N = 12 (A) and N = 18 (B). White dot = high-intensity interval training data. Black dot = moderate-intensity training data. Dot with x = control data
