T. Roengrit, P. Wannanon, P. Prasertsri, Y. Kanpetta, B.- orn Sripanidkulchai, and N. Leelayuwat, “The Acute Treatment Effect Of Phyllanthus Amarus on Heart Rate Variability Responses to Moderate- and High-Intensity Exercise in Sedentary Healthy Men”, SRIMEDJ, vol. 28, no. 4, pp. 258–265, Nov. 2013.