1. 1. Cerin E, Barnett A. A processual analysis of basic emotions and sources of concerns as they are lived before and after a competition. Psychology of Sport and Exercise, 2006; 7:1 ̶ 21.
2. 2. Lotfi GH, Motaghi MR, Daemi E, Rohani Z. Investigate the relationship between anxiety and performance anxiety coaches football players Gonbad city. Journal of Medical Sciences and Health Services Gonbad, 2011; 3:112 ̶ 120.
3. 3. Jakovljević S, Karalejić M, Lazarević L. The latent structure of conative dimensions of elite senior and junior basketball players. Physical Education and Sport, 2010; l(8):21 ̶ 30.
4. 4. Kanniyan A. Competitive state anxiety: impact of positive self talk training on junior level football players. Sport Mont Journal, 2015; (43-45): 42 ̶ 49.
5. 5. Robazza, C, Bortoli, L. Perceived impact of anger and anxiety on performance in rugby players. Psychology of Sport and Exercise, 2007; 8(6):875 ̶ 890.