6T. Y. Warren, V. Barry & S. P. Hooker et al. , "Sedentary Behaviors Increase Risk of Cardiovascular Disease Mortality in Men," Medicine and Science in Sports and Exercise, Vol. 42, No. 5(2010), pp. 879 - 885.
7B. C. Brunner, "Personality and Motivating Factors Influencing Adult Participation in Vigorous Physical Activity," Research Quarterly, Vol. 40, No. 3(1969), pp. 464 - 469.
8L. Flanagan, "A Study of Some Personality Traits of Different Physical Activity Groups," Research Quarterly, Vol. 22, No. 3(1951), pp. 312-323.
9A. Furnham, "Personality and Activity Preference," British Journal of Social Psychology, Vol. 20, No. 1 (1981), pp. 57 -68.
10H.J. Eysenck & S. B. G. Eysenck, Manual of the Eysenck Personality Scales (EPS Adult), London. Hodder & Stoughton Publishers, 1991.