1. Aminnejad, Parvin; Zeidabadi, Rasoul; Hamboushi, Laleh and Khajasteh, Milad. (2020). Examining the structural relationships between sports mindfulness and cognitive emotion regulation with competitive anxiety in athletes. Journal of Psychology, 24 (3), 333-317.
2. Siraji, Hajar. (2016). The relationship between social capital and motivation with participation in public sports activities in Sari County. Master's thesis, Shafaq Higher Education Institute.
3. Alipour, Ahmad and Noorbal, Ahmad. (1999). Preliminary study of the reliability and validity of the Oxford Happiness Questionnaire among students of Tehran universities. Journal of Thought and Behavior, 17(18), 19-3.
4. Makafi Diba, Maryam, Amir Pour, Ali, and Mehri, Ali (2018). The relationship between public sports and the vitality and productivity of workers, Second National Conference on Promotion and Development of Public Sports in Ardabil Province, Ardabil.
5. Mardpour, Mahsa. (2018). The relationship between job satisfaction and motivation for sports participation considering the moderating role of social media addiction among employees of the National Petrochemical Company. Master's thesis, Islamic Azad University, Tehran Science and Research Branch.
6. Maqsoodi, Fatemeh. (2018). The relationship between cognitive emotion regulation and coping styles with the athletic success of student athletes. Journal of Sports Psychology, 3(1), 36-23.
7. Hamidi Volandani, Azadeh. (2012). The relationship between personality traits and emotional regulation diffi-culties with sports identity in athletes. Master's thesis, Islamic Azad University, Marvdasht Branch. Navidi Iman, Ghafarani Pour Fazlollah, Taheri Zahra, Khorsandi Mahbubeh (2015). Investigating the impact of morning exercise on the quality of life of employees at the Arak Health Center: a brief report. Rafsanjan Uni-versity of Medical Sciences Journal; 14 (2): 161-166.
8. An, H. Y., Chen, W., Wang, C. W., Yang, H. F., Huang, W. T., & Fan, S. Y. (2020). The Relationships between Physical Activity and Life Satisfaction and Happiness among Young, Middle-Aged, and Older Adults. Interna-tional journal of environmental research and public health, 17(13), 4817. https://doi.org/10.3390/ijerph17134817
9. Gill, D. L., Gross, J. B. & Huddleston, S. (1983). Participation motivation in youth sports. International Journal of Sport Psychology, 14, 1-14.
10. Jang, W. E., Wann, D. L., & Ko, Y. J. (2018). Influence of team identification, game outcome, and game pro-cess on sport consumers’ happiness. Sport management review, 21(1), 63-71.‌
11. Kerr G, Stirling A. (2019). Where is safeguarding in sport psychology research and practice? Journal of Applied Sport Psychology, 31(4), 367-384.
12. Kim, J., & James, J. D. (2019). Sport and Happiness: Understanding the Relations Among Sport Consumption Activities, Long-and Short-Term Subjective Well-Being, and Psychological Need Fulfillment. Journal of Sport Management, 33 (2).
13. McCormick, A., Meijen, C., Anstiss, P. A., & Jones, H. S. (2019). Self-regulation in endurance sports: theory, research, and practice. International Review of Sport and Exercise Psychology, 12(1), 235-264.‌
14. Nicholls A. (2021). Psychology in sports coaching: Theory and practice. Routledge.
15. O’Neil, L., & Hodge, K. (2020). Commitment in sport: The role of coaching style and autonomous versus con-trolled motivation. Journal of Applied Sport Psychology, 32(6), 607-617.
16. Padilla, C., & Andres, P. (2021). Personality Traits, Achievement Motivation, and Self-Regulation in Physically Active and Sedentary Young Adults. In (Ed.), Sport Psychology in Sports, Exercise and Physical Activity. IntechOpen. https://doi.org/10.5772/intechopen.99738
17. Parra E, Arone A, Amadori S, Mucci F. (2020). Impact of Physical Exercise on Psychological Well-being and Psychiatric Disorders. Journal for ReAttach Therapy and Developmental Diversities, 3(2), 24-39.
18. Reigal R, Videra A, Gil J. (2014). Practica física, autoeficacia general y satisfaccion vital en la adolescencia. [Physical exercise, general self-efficacy and life satisfaction in adolescence]. Rev. Int. Med. Ciencias Act. Fisica Deporte, 14, 561-576.
19. Stambulova N, Samuel, R. (2020). Career transitions. Routledge encyclopedia of sport and exercise psycholo-gy, 2, 119-
20. Tur-Porcar A and Ribeiro-Soriano D (2020) The Role of Emotions and Motivations in Sport Organizations. Front. Psychol. 11:842. doi: 10.3389/fpsyg.2020.00842