PUTRI, L. S.; ANJASMARA, B.; WIDANTI, H. N. Differences in Nordic Hamstring Exercise and Contract Relax Stretching on Increasing Flexibility in Students with Hamstring Tightness at Muhammadiyah University of Sidoarjo: Perbedaan Nordic Hamstring Exercise dan Contract Relax Stretching Terhadap Peningkatan Fleksibilitas pada Mahasiswa dengan Hamstring Tightness di Universitas Muhammadiyah Sidoarjo. Journal of Islamic and Muhammadiyah Studies, [S. l.], v. 5, p. 10.21070/jims.v5i0.1571, 2023. DOI: 10.21070/jims.v5i0.1571. Disponível em: https://jims.umsida.ac.id/index.php/jims/article/view/1571. Acesso em: 7 sep. 2025.