Adie, J., Duda, J., & Ntoumanis, N. (2008). Autonomy support, basic need satisfaction and the optimal functioning of adult male and female sport participants: A test of basic needs theory. Motivation and Emotion, 4, 189-199. doi:10.1007/s11031-008-9095-z
 Biddle, S. J. H., Soos, I., & Chatzisarantis, N. L. (1999). Predicting physical activity intentions using goal perspectives and self-determination theory approaches. European Psychologist, 4, 83-89.
 Chatzisarantis, N., Hagger, M. S., Biddle, S., Smith, B., & Wang, J. (2003). A meta-analysis of perceived locus of causality in exercise, sport, and physical education contexts. Journal of Sport and Exercise Psychology, 25, 284-306.
 Edmunds, J. K., Ntoumanis, N., & Duda, J. L. (2006). A test of selfdetermination theory in the exercise domain. Journal of Applied Social Psychology, 36, 2240-2265. doi:10.1111/j.0021-9029.2006.00102.x
 Edmunds, J. K., Ntoumanis, N., & Duda, J. L. (2007). Perceived autonomy support and psychological need satisfaction as key psychological constructs in the exercise domain. In M. Hagger, & N. L. D. Chatzisarantis (Eds.), Self-determination in exercise and sport (pp. 35-51). Champaign, IL: Human Kinetics.
 Edmunds, J. K., Ntoumanis, N., & Duda, J. L. (2008). Testing a self-determination theory based teaching style in the exercise domain. European Journal of Social Psychology, 38, 375-388. doi:10.1002/ejsp.463
 Gagne, M., Ryan, R. M., & Bargmann, K. (2003). The effects of parent and coach autonomy support on need satisfaction and well-being of gymnasts. Journal of Applied Sport Psychology, 15, 372-390. doi:10.1080/714044203
 Guh, D. P., Zhang, W., Bansback, N., Amarsi, Z., Birmingham, C. L., & Anis, A. H. (2009). The incidence of co-morbidities related to obesity and overweight: A systematic review and meta-analysis. BMC Public Health, 9, 88. doi:10.1186/1471-2458-9-88
 Hagger, M. S., Biddle, S. J. H., & Wang, C. K. (2005). Physical selfconcept in adolescence: Generalizability of a multidimensional, hierarchical model across gender and grade. Educational and Psychological Measurement, 65, 297-322. doi:10.1177/0013164404272484
 Hagger, M. S., Chatzisarantis, N. L. D., & Harris, J. (2006). From psychological need satisfaction to intentional behavior: Testing a motivational sequence in two behavioral contexts. Personality and Social Psychology Bulletin, 32, 131-138. doi:10.1177/0146167205279905
 Hayes, S. D., Crocker, P. R. E., & Kowalski, K. C. (1999). Gender differences in physical self-perception, global self esteem and physical activity: Evaluation of the physical self-perception profile model. Journal of Sport Behavior, 22, 1-14.
 Kowal, J., & Fortier, M. S. (2000). Testing relationships from the hierarchical model of intrinsic and extrinsic motivation using flow as a motivational consequence. Research Quarterly for Exercise and Sport, 71, 171-181.
 Kowalski, N. P., Crocker, P., & Kowalski, K. C. (2001). Physical self and physical activity relationships in college women: Does social physique anxiety moderate effects? Research Quarterly for Exercise and Sport, 72, 55-62.
 Kumanyika, S. K., Obarzanek, E., Stettler, N., Bell, R., Field, A. E., Fortmann, S. P., & Hong, Y. (2008). Population-based prevention of obesity: The need for comprehensive promotion of healthful eating, physical activity, and energy balance. Circulation, 118, 428-464. doi:10.1161/CIRCULATIONAHA.108.189702
 National Center for Health Statistics (2009). Summary health statistics for US adults: National health interview survey. http://www.cdc.gov/nchs/fastats/exercise.html
 Pelletier, L. G., Fortier, M. S., Vallerand, R. J., & Brière, N. M. (2001). Associations among perceived autonomy support, forms of self-regulation, and persistence: A prospective study. Motivation and Emotion, 25, 279-306. doi:10.1023/A:1014805132406
 Ryan, R. M., & Deci, E. L. (2000). The darker and bright sides of human existence: Basic psychological needs as a unifying concept. Psychological Inquiry, 11, 319-338. doi:10.1207/S15327965PLI1104_03
 Ryan, R. M., Williams, G. C., Patrick, H., & Deci, E. L. (2009). Selfdetermination theory and physical activity: The dynamics of motivation in development and wellness. Hellenic Journal of Psychology, 6, 107-124.
 Sallis, J. F., Hovell, M. F., Hofstetter, C. R., Faucher, P., Elder, J. P., Blanchard, J., et al. (1989). A multivariate study of determinants of vigorous exercise in a community sample. Preventive Medicine, 18, 20-34. doi:10.1016/0091-7435(89)90051-0
 Salmon, J., Owen, N., Crawford, D., Bauman, A., & Sallies, J. F. (2003). Physical activity and sedentary behavior: A population-based study of barriers, enjoyment, and preference. Health Psychology, 22, 178-188. doi:10.1037/0278-6220.127.116.11
 Standage, M., Duda, J. L., & Pensgaard, A. M. (2005). The effect of competitive outcome and task-involving, ego-involving, and cooperative structures on the psychological well-being of individuals engaged in a co-ordination task: A self-determination approach. Motivation and Emotion, 29, 41-68. doi:10.1007/s11031-005-4415-z
 Standage, M., Sebire, S. J., & Loney, T. (2008). Does exercise motivation predict engagement in objectively assessed bouts of moderate-intensity exercise behavior? A self-determination theory perspective. Journal of Sport and Exercise Psychology, 30, 337-352.
 Thogersen-Ntoumani, C., & Ntoumanis, N. (2006). The role of selfdetermined motivation in the understanding of exercise-related behaviours, cognitions and physical self-evaluations. Journal of Sports Sciences, 24, 393-404. doi:10.1080/02640410500131670
 US Department of Health and Human Services (2002). Physical activity fundamental to preventing disease. http://aspe.hhs.gov/health/reports/physicalactivity
 Vallerand, R. J. (2001). A hierarchical model of intrinsic and extrinsic motivation in sport and exercise. In G. C. Roberts (Ed.), Advances in motivation in sport and exercise (pp. 263-319). Champaign, IL: Human Kinetics.
 Vansteenkiste, M., Simons, J., Lens, W., Sheldon, K. M., & Deci, E. L. (2004). Motivating persistence, deep level learning and achievement: The synergistic role of intrinsic-goal content autonomy-supportive context. Journal of Personality and Social Psychology, 87, 246-260. doi:10.1037/0022-3518.104.22.168
 Vierling, K. K., Standage, M., & Treasure, D. C. (2007). Predicting physical activity and attitudes toward physical activity in an “at-risk” youth sample: A test of self-determination theory. Psychology of Sport and Exercise, 8, 795-781. doi:10.1016/j.psychsport.2006.12.006
 Vlachopoulos, S. P., & Karavani, E. (2009). Psychological needs and subjective vitality in exercise: A cross-gender situational test of the needs universality hypothesis. Hellenic Journal of Psychology, 6, 207-222.
 Vlachopoulos, S. P., & Michailidou, S. (2006). Development and initial validation of a measure of autonomy, competence, and relatedness in exercise: The Basic Psychological Needs in Exercise Scale. Measurement in Physical Education and Exercise Sciences, 10, 179-201. doi:10.1207/s15327841mpee1003_4
 Wilson, P. M., Mack, D. E., Gunnell, K., Oster, K., & Gregson, J. P. (2008). Analyzing the measurement of psychological need satisfaction in exercise contexts: Evidence, issues, and future directions. In M. P. Simmons (Ed.), Sport and exercise psychology research advances (pp. 361-391). Hauppauge: Nova Science Publishers.
 Wilson, P. M., & Rodgers, W. M. (2003). The relationship between psychological needs, self-determined motivation, exercise attitudes, and physical fitness. Journal of Applied Social Psychology, 33, 2373- 2392. doi:10.1111/j.1559-1816.2003.tb01890.x
 Wilson, P. M., Rodgers, W. M., & Fraser, S. N. (2002). Examining the psychometric properties of the behavioral regulation in exercise questionnaire. Measurement in Physical Education and Exercise Science, 6, 1-21. doi:10.1207/S15327841MPEE0601_1
 Wilson, P. M., & Rogers, W. T. (2008). Examining relationships between perceived psychological need satisfaction and behavioural regulations in exercise. Journal of Applied Biobehavioral Research, 13, 119-142. doi:10.1111/j.1751-9861.2008.00031.x