Tambunan, Grace Kharisma, Heny Setyawati, Setya Rahayu, Bambang Priyono, and Jujur Gunawan Manullang. 2025. “Evaluating the Effects of Circuit Training and Motivation on Gender-Specific Waist Reduction in Overweight Populations”. Physical Education Theory and Methodology 25 (2):348-56. https://doi.org/10.17309/tmfv.2025.2.16.