article 2014 PERBEDAAN PENGARUH CIRCUIT TRAINING DAN FARTLEK TRAINING TERHADAP PENINGKATAN VO2MAX DAN INDEKS MASSA TUBUH Muh. Akmal Almy, Sukadiyanto Sukadiyanto JournalJurnal KeolahragaanDOI10.21831/jk.v2i1.2603Study typeexperimental researchPopulationfootball players View on DOI ↗