مستعد

References: 

1. How to prevent infections. Harvard Medical School, 2016. (Accessed 10/02/2020, at https://www.health.harvard.edu/staying-healthy/how-to-prevent-infections.)
2. Cox AJ, Gleeson M, Pyne DB, Callister R, Hopkins WG, Fricker PA. Clinical and laboratory evaluation of upper respiratory symptoms in elite athletes. Clin J Sport Med 2008; 18:438-445.
3. Cox AJ, Pyne DB, Saunders PU, Callister R, Gleeson M. Cytokine responses to treadmill running in healthy and illness-prone athletes. Med Sci Sport Exerc 2007; 39:1918-1926
4. Gleeson M, McDonald W, Pyne D, Cripps A, Francis JL, Fricker P et al. Salivary IgA levels and infection risk in elite swimmers. Med Sci Sports Exerc 1999; 31:67-73
5. Exercise and immunity https://medlineplus.gov/ency/article/007165.htm