Promsrisuk, et.al, T., W. Khrisanapant, O. Pasurivong, W. Boonsawat, B. Pussadhamma, P. Benjapornlert, and P. Chanchalad. “Prediction Equations for Maximum Aerobic Capacity Using Cardiopulmonary Exercise Testing Among Thais”. Asia-Pacific Journal of Science and Technology, vol. 20, no. 4, Dec. 2015, pp. 449-58, doi:10.14456/kkurj.2015.37.