Janyacharoen, Taweesak, Orawan Buranrux, Kluaymai Promdee, Yodsak Hanchanlerd, Samart Baudee, and Apichat Gernsungnoen. 2001. “The change of heart rate and blood presure before and after treadmill exercise comparison between smokers and non-smokers”. Archives of Allied Health Sciences 13 (2). Khon Kaen, Thailand:94-103. https://he01.tci-thaijo.org/index.php/ams/article/view/65957.