Antecedents and consequences of athlete's trust in the coach

Purpose： To assess the effects of trust in the coach on commitment to coach, willingness to cooperate, and perceived performance. Methods： Two hundred and fifteen members of competitive sports clubs responded to scales measuring coach characteristics of justice, benevolence, integrity, and competence; athlete＇s trust in the coach; commitment to coach; willingness to cooperate; and perceived performance. Results： Confirmatory factor analysis of data supported the measurement model. Perceptions of a coach＇s justice （β = 0.19, p 〈 0.05）, benevolence （β = 0.32, p 〈 0.05）, integrity （β= 0.14, p 〈 0.05）, and competence （β = 0.29, p 〈 0.05） each had a significant effect on athletes＇ trust, and they cumulatively accounted for 61% of the variance in trust. The structural equation modeling showed that trust had direct effects on commitment to coach （β = 0.77, p 〈 0.01）, willingness to cooperate （β= 0.79, p 〈 0.01 ）, and perceived performance （β = 0.51, p 〈 0.01）,. The hypothesized mediating effects of commitment to coach and willingness to cooperate were not supported. The model explained 26% of the variance in perceived performance. Conclusion： As trust in coach influences commitment to coach, willingness to cooperate, and perceived performance, coaches need to take effort to bolster their athletes＇ trust by being just and benevolent, and enhancing their integrity and competence.

Validity, Reliability, and Invariance of the Greek Version the Physical Activity Perceived Barriers Scale

The study aimed to examine the validity, reliability, and factorial invariance across gender of the PAPBS （Physical Activity Perceived Barriers Scale） in Greek children. 613 students （322 boys and 291 girls） from a city of Greece completed the above scale in 3 periods during a school year. Confirmatory factor analysis was applied. Strong evidence was found for the hypothesized second-order factor structure of the physical activity perceived barriers scale in the 3 measurements （comparative fit index = 0.951, 0.933, 0.922, and root mean square error of approximation = 0.061, 0.069, 0.074）. The scale＇s internal consistency was supported satisfactorily, whereas correlations coefficients between scale and several physical activity scores were significant moderate to high. Finally, results provided support of the invariance of the first- and second-order factor loadings and invariance structural residuals, but weak support of the invariance of the residual variance of observed variables of the examined scale across gender. The findings suggest that physical activity perceived barriers scale is appropriate for use with Greek children and it is considered as a useful tool for researches interested in studying the children＇s participation in physical activity.