Parents' income has influence on levels of physical activity and sedentary behaviour of junior high school student. - Rusdiawan, Afif; Fikri, Muhammad Dzul; Purnomo, Mochamad; Nor, Azmawaty Mohamad; Ningsih, Yuni Fitriyah; Rohman, Moh. Fathur; Fathir, Lucy Widya; Lani, Ahmad (Retos: Nuevas Perspectivas de Educación Física, Deporte y Recreación, 2024)