Development and validation of the body posture self-perception questionnaire

ABSTRACT The assessment of self-perceived body posture still lacks valid instruments that measure the “perception” construct. This study aims to develop and validate the content of a questionnaire that assesses self-perceived static body posture alignment in school-aged children and adolescents. In total, six experts in postural assessment and education — three dedicated to clinical practice and three, to the scientific area — evaluated the Self-Bodpos proposed instrument by a validation questionnaire with general and specific questions about each item and the options for closed answers and contained spaces for suggestions. The content validity index (CVI) served to calculate the experts’ responses. In total, two rounds of evaluations with the experts were necessary. In the first round, CVI ranged from 90 to 40%, requiring further adjustments in the drawings and response options. In the second round, the CVI reached values above 90%, ending the content validation stage. The Self-Bodpos proposed questionnaire offers a valid tool to assess children’s and adolescents’ self-perceived static body posture, which can serve scientific research, clinical practice, and the educational environment.