Effects of Mental Training Through Imagery on the Competitive Anxiety of Adolescent Tennis Players Fasting During Ramadan: A Randomized, Controlled Experimental Study oleh Sofien Fekih, Sofien Fekih, Sofien Fekih, Mohamed Sami Zguira, Mohamed Sami Zguira, Abdessalem Koubaa, Abdessalem Koubaa, Anouar Bettaieb, Jamel Hajji, Nicola Luigi Bragazzi, Nicola Luigi Bragazzi, Nicola Luigi Bragazzi, Mohamed Jarraya, Mohamed Jarraya