Peningkatan Kebugaran Kardiorespirasi melalui Latihan Modifikasi Harvard Step Test pada Siswa Kelas VII SMPN 12 Surabaya. STAND : Journal Sports Teaching and Development, [S. l.], v. 7, n. 1, p. 142–148, 2026. DOI: 10.36456/j-stand.v7i1.11594. Disponível em: https://jurnal.unipasby.ac.id/stand/article/view/11594. Acesso em: 19 jun. 2026.