Survey of Physical Fitness Levels for Grade 1 and 2 Elementary School Students in Brengkok Village, Brondong District, Lamongan Regency in 2022/2023. (2023). NUSANTARA SPORTA: Jurnal Pendidikan Dan Ilmu Keolahragaan, 1(03), 97-109. https://doi.org/10.2024/ns.v3i04.2025_P559-568