What did studies conducted on the sound output of Qigong masters show?

Studies showed that a band of frequencies in the infrasonic range generalized from the testing of the hand emissions of many natural healers was effective at improving outcomes in hospital and research settings. Further study showed that some healers enliven and excite, while others calm and relax. Many other variations in effectiveness were identified as well, showing that healers and their energy emissions are not all the same and that only a part of their emissions can be properly described as Sound Healing.