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The aim of the present study was to translate and adapt the Preference for and Tolerance of the Intensity of Exercise Questionnaire to Portuguese (PRETIE-Q-PT), and to analyze its psychometric properties (factorial validity with gender invariance analyses, reliability, temporal stability, and construct validity). The sample was composed of 445 Portuguese participants (55.9% women), with a mean age of 29.6 years (SD = 8.2). To verify the psychometric properties of the scale, structural equation modeling procedures were used. Results showed that an abbreviated 10-item scale presented good fit, reliability, and convergent validity. Latent mean analysis between samples, sex, and time points showed no differences. Construct validity tested with self-reported exercise frequency, vitality, well-being, and habit supported the use of the PRETIE-Q-PT in exercise settings, highlighting the need for exercise professionals to consider these intensity-related trait variables in the promotion of a pleasant exercise experience. As a general conclusion, the PRETIE-Q-PT seems to be a valid scale that can be used to assess intensity-trait characteristics in health club exercisers, and may allow professionals to better adjust exercise prescription to subjective needs aiming to achieve theoretically suggested promotion of pleasurable exercise experiences.

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Translating and validating measurement instruments in sport and exercise psychology is not an easy task. Rather, it is a task that requires effort and time, for the process is not limited to a simple translation to translate words from one language to another, just in order to make valid and reliable measure. All researchers should be aware that the only proper way is to adopt rigorous and robust methodologies to conduct the process from the preliminary stage of translation to reaching the validation stage of the psychological variable. Only so is it possible to avoid creating fragile and inadequate psychological assessment instruments that can jeopardize the entire investigation to be held with its use. Thus, the main objective of this work is to promote reflection and discussion on the subject by presenting some considerations and recommendations about translation and validation of questionnaires for psychological assessment applied to sport and exercise domain.

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