?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.au=Ilham+Jaya+Kusumah%2C+-&rft.aufirst=-&rft.aulast=Ilham+Jaya+Kusumah&rft.title=PENGARUH+JACK+KNIFE+STRETCHING+DAN+NORDIC+HAMSTRING+EXERCISE+TERHADAP+FLEKSIBILITAS+OTOT+HAMSTRING+ATLET+FUTSAL&rft.date=29+August+2025&rft.degree=S1&rft.inst=Universitas+Pendidikan+Indonesia