The effectiveness of special exercises using an assistive device on reaction speed, shoulder joint angle, and learning the skills of serving and forehand stroke in tennis for students. - Sabea, Nawres Mhmood; Abdalkarem, Alaa Abdalrazaq; Albayati, Suhair Raad Yahya; Alshaher, Iman Shlaka Awadh (Retos: Nuevas Perspectivas de Educación Física, Deporte y Recreación, 2025)