El estudio analizo la prediccion del clima motivacional percibido, la satisfaccion de las necesidades psicologicas basicas y la motivacion intrinseca sobre la adherencia a la practica deportiva. Se utilizo una muestra de 580 deportistas con una edad media de 14.46 anos. Se emplearon el Cuestionario del Clima Motivacional Percibido en el Deporte-2, la Escala de las Necesidades Psicologicas Basicas en el Ejercicio, el factor motivacion intrinseca de la Escala de Motivacion Deportiva y la Medida de la Intencionalidad para ser Fisicamente Activo. Los resultados del modelo de ecuaciones estructurales mostraron que el clima motivacional que implica a la tarea predecia las tres necesidades psicologicas basicas y la intencion de seguir siendo fisicamente activo. Por otro lado, el clima motivacional que implica al ego predecia la necesidades de autonomia y de competencia, aunque con un peso de regresion en ambos casos mucho menor que como lo hacia el clima tarea. La satisfaccion de las tres necesidades psicologicas basicas predijo positivamente la motivacion intrinseca. Por su parte, la motivacion intrinseca predijo la intencion de ser fisicamente activo en el futuro. Se discuten los resultados en relacion a la importancia de fomentar un clima motivacional tarea en los practicantes para incrementar la adherencia a la practica deportiva. Palabras clave : clima motivacional; motivacion; teoria de la autodeterminacion; adherencia al deporte. Abstract The study analyzed the prediction of perceived motivational climate, basic psychological needs satisfaction and intrinsic motivation on adherence to sports. A sample of 580 athletes with a mean age of 14.46 years, participated in the study. The Perceived Motivational Climate in Sport Questionnaire-2, the Basic Psychological Needs in Exercise Scale, the intrinsic motivation factor of the Sport Motivation Scale and Intention of Being Physically Active were used. Structural equation modeling results showed that the task-involving motivational climate positively predicted the three basic psychological needs and the intention to practice physical activity into the future. Moreover, the ego-involving motivational climate predicted autonomy and competence needs, although with regression weight in both cases much less than it did the the task-involving motivational climate. The satisfaction of the three basic psychological needs positively predicted intrinsic motivation. Besides, intrinsic motivation predicted the intention to be physically active in the future. Results are discussed in relation to the importance of promoting a task-involving motivational climate to increase adherence to sport. Key words : motivational climate; motivation; self-determination theory; adherence to sports. doi:10.5232/ricyde2011.02501 ------------------------------------------------------------------------------------- Referencias/references Deci, E. L., & Ryan, R. M. (2000). The “what” and “why” of goal pursuits: Human needs and the self-determination of behaviour. Psychological Inquiry, 11, 227-268. doi:10.1207/S15327965PLI1104_01 Gagne, M.; Ryan, R. M., & Bargmann, K. (2003). Autonomy support and need satisfaction in the motivation and well-being of gymnasts. Journal of Applied Sport Psychology, 15, 372-390. doi:10.1080/714044203 Hein, V.; Muur, M., & Koka, A. (2004). Intention to be physically active after school graduation and its relationship to three types of intrinsic motivation. European Physical Education Review, 10, 5-19. doi:10.1177/1356336X04040618 Hu, L., & Bentler, P. M. (1999). Cutoff criteria for fit indexes in covariance structure analysis: Conventional criteria versus new alternatives. Structural Equation Modeling, 6, 1-55. doi:10.1080/10705519909540118 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. PMid:10925814 Le Bars, H.; Gernigon, C., & Ninot, G. (2009). Personal and contextual determinants of elite young athletes’ persistence or dropping out over time. Scandinavian Journal of Medicine and Science in Sports, 19, 274-285. doi:10.1111/j.1600-0838.2008.00786.x PMid:18384491 Lim, B. S. C., & Wang, C. K. J. (2009). Perceived autonomy support, behavioural regulations in physical education and physical activity intention. Psychology of Sport and Exercise, 10, 52-60. doi:10.1016/j.psychsport.2008.06.003 Mageau, G. A., & Vallerand, R. J. (2003). The coach-athlete relationship: a motivational model. Journal of Sports Sciences, 21, 883-904. doi:10.1080/0264041031000140374 PMid:14626368 Marsh, H.W.; Hau, K.T., & Wen, Z. (2004). In search of golden rules: Comment on hypothesis-testing approaches to setting cutoff values for fit indexes and dangers in overgeneralizing Hu & Bentler’s (1999) findings. Structural Equation Modeling, 11, 320-341. doi:10.1207/s15328007sem1103_2 Newton, M. L.; Duda, J. L., & Yin, Z. (2000). Examination of the psychometric properties of the Perceived Motivational Climate in Sport Questionnaire-2 in a sample of female athletes. Journal of Sports Sciences, 18, 275-290. doi:10.1080/026404100365018 Nunez, J. L.; Martin-Albo, J.; Navarro, J. G., & Gonzalez, V. M. (2006). Preliminary validation of a Spanish version of the Sport Motivation Scale. Perceptual and Motor Skills, 102, 919-930. doi:10.2466/pms.102.3.919-930 Quested, L., & Duda, J. L. (2009). Perceptions of the motivational climate, need satisfaction, and indices of well- and ill-being among hip hop dancers. Journal of Dance Medicine and Science, 13, 10-19. PMid:19416610 Quested, L., & Duda, J. L. (2010). Exploring the social-environmental determinants of well- and ill-being in dancers: A test of basic needs theory. Journal of Sport and Exercise Psychology, 32, 39-60. PMid:20167951 Reinboth, M., & Duda, J. L. (2006). Perceived motivational climate, need satisfaction and indices of well-being in team sports: A longitudinal perspective. Psychology of Sport and Exercise, 7, 269-286. doi:10.1016/j.psychsport.2005.06.002 Sarrazin, P.; Vallerand, R.; Guillet, E.; Pelletier, L., & Cury, F. (2002). Motivation and dropout in female handballers: A 21-month prospective study. European Journal of Social Psychology, 32, 395-418. doi:10.1002/ejsp.98 Standage, M.; Duda, J. L., & Ntoumanis, N. (2006). Students’ motivational processes and their relationship to teacher ratings in school physical education: A self-determination theory approach. Research Quarterly for Exercise and Sport, 77, 100-110. PMid:16646357 Sproule, J.; Wang, C. K. J.; Morgan, K.; McNeills, M., M Amorose, A. J., & Wilko, A. M. (2009). Coaching behaviors, motivational climate, and psychosocial outcomes among female adolescent athletes. Pediatric Exercise Science, 21, 475-492. PMid:20128366