Psychometric Properties of the Exercise Causality Orientations Scale

The Exercise Causality Orientations Scale-2 (ECOS-2) has been designed to evaluate causality orientations in exercise based on the Self Determination Theory. The purpose of this research was to determine the reliability and validity of ECOS-2 in women of Mashhad. 402 women entered the study using the convenience sampling method and completed ECOS-2. The Confirmatory factor analysis result demonstrated that ECOS-2 has acceptable construct reliability and Cronbach’s alpha coefficient for scale and subscales have an acceptable level. Therefore, the ECOS-2 has good validity and reliability in the Iranian women sample. The other finding of this study was that women with a long background of exercise scored higher in autonomy orientation. The findings of this study can be used in research and intervention to increase physical activity in women.