---

This study examines the relationship pattern of the motivational climate,satisfaction of the psychological needs and self-determined motivation in youth male athletes based on the self-determination theory (Deci & Ryan, 1985, 2000). A sample of 255 athletes ranging from 12-14 years of age from varity of team sports completed the Motivational climate in youth sport, behavioral regulations toward sport, and the basic needs in sport scale. Pearson correlation, Confirmed factor analysis, Structural Equation Modeling analyses were used to examine the research hypotheses. The results revealed mastery oriented climate have a direct, positive influence on relatedness, competence, and autonomy.Competence and relatedness influenced self-determination, positively. Relatedness, competence, and autonomy had mediatory role in affecting mastery climate on self-determination. The results indicated that mastery motivational climate is an important motivational variable in youth male athletes which can influence self-determination by affectingpsychological needs.

---

The aim of this study was to examine therelationship perceived autonomy-supportive behaviors of coaches onself-determined motivation and sport commitment of elitefemale players inHandball league. The research desing was a descriptive-correlational.For this pourpose statistical society of this research incloud 237 female players were selected equal to sample society. Perceived autonomy- supportive behaviors of coaches, self-determined motivation and sport commitment were assessed using the perceived autonomy support scale for exercise settings(PASSES), Sport Motivation Scale (SMS( and Sport Commitment Model Scale) scms) respectively. The validity and reliability of the questionnaires was measured and modified.Data were analyzed using multiple regression and Structural Equation Models (SEM) in significance level of P<0/05. The finding showed autonomy-supportive behaviors had significant positive correlation with intrinsic motivation, introjected regulation and indentified regulation. However, autonomy-supportive negative correlation amotivation.In addition, intrinsic motivation, introjected regulation and indentified regulation had significant positive correlation with sport commitment players.Multiple regression showed autonomy-supportive coaches was predictor factor for the intrinsic motivation, extrinsic motivation and sport commitment players.path analysis results offered support for the proposed model. Total mediation was supported in the case of intrinsic motivation, introjected regulation and indentified regulation in the relationship between autonomy-supportive coaches and sport commitment players. The findings underline the importance of perceived autonomy-supportive coaches in motivation and sport commitment players. The results provide support Self-determination Theory in elite players