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2016 Sep  6.  Pengaruh Minuman Kopi Minim Kafein terhadap VO2max dan Pemulihan Denyut Nadi setelah Melakukan Treadmill  (The Effect of Decaffeinated Coffee Drink on VO2max and Pulse Recovery Rate after Treadmill Test). Pustaka Kesehatan. [Online] 4:3