Cross-cultural adaptation and psychometric properties of the Brazilian coach-athlete relationship questionnaire (CART-Q) - Athlete Version

Abstract

The aim of this study was to test the psychometric properties of the Brazilian

version of the Coach-Athlete Relationship Questionnaire (CART-Q) - Athlete Version.
For this, three studies were performed. In the first, four translators and five experts in
Sport Psychology adapted the CART-Q contents to the Brazilian context. In the second,
364 athletes of individual and collective sports answered the adapted version of CART-Q.
In the third, an independent sample of 185 athletes answered the CART-Q and the Task
and Ego Orientation in Sport Questionnaire (TEOSQ) to analyze the external validity of
the instrument; and 50 athletes answered the CART-Q in two distinct moments for the
analysis of the temporal stability. Study 1 showed that the Portuguese version contains
clear and relevant questions (CVC> 0.80). Study 2 showed that the CART-Q presents
satisfactory internal consistency (?> 0.70 / CC> 0.70). The confirmatory factor analysis
showed that the model with 11 items showed good fit [X2/gl = 3.03; CFI = 0.96, GFI =
0.94; TLI = 0.94; RMSEA = 0.08] and also the existence of the second-order model. Study
3 showed the external (r> 0.40 with variable task orientation) and internal validity (CFA
with an independent sample) and temporal stability (ICC> 0.70). It was concluded that the
Brazilian version for of CART-Q proved to be valid to evaluate the perception of athletes
about their relationship with the coach in the Brazilian sports context.