Translation, Cultural Adaptation, and Evaluation of the Psychometric Properties of the Greek Version of the Rapid Weight Loss Questionnaire for Combat Sports Athletes
Validation study demonstrates strong reliability and known-groups validity for the RWLQ-GR in combat sports athletes, highlighting widespread acute weight reduction practices.
Key Points
Translate and culturally adapt the Rapid Weight Loss Questionnaire into Greek (RWLQ-GR) and evaluate its psychometric properties alongside rapid weight loss behaviors in combat sports athletes.
Translated and culturally adapted the questionnaire according to international guidelines.
Assessed psychometric properties (test–retest reliability, known-groups validity, and convergent validity against the EAT-26) in N=209 Greek-speaking combat sports athletes, with N=34 completing a retest.
Rapid weight loss was reported by 92% of participants prior to competition, resulting in a median body mass reduction of 4.5%.
The RWLQ-GR showed high test–retest reliability for numerical items and total scores, with fair to excellent reliability across categorical items and no systematic differences on repeated administration.
The instrument successfully differentiated athletes by their typical weight loss for known-groups validity, but demonstrated limited convergent validity as the total score did not correlate with total EAT-26 scores.