Development and psychometric evaluation of the exercise benefits/barriers scale

Area of Science:

• Exercise Psychology
• Psychometrics
• Health Behavior Research

Background:

• Understanding individuals' perceptions of exercise benefits and barriers is crucial for promoting physical activity.
• Existing instruments may not fully capture the multifaceted nature of these perceptions.
• A reliable and valid measurement tool is needed for research and clinical applications.

Purpose of the Study:

• To psychometrically evaluate a new instrument designed to measure perceived benefits and barriers to exercise.
• To establish the reliability and validity of the exercise benefits and barriers scale.
• To provide a robust tool for assessing exercise-related perceptions in adult populations.

Main Methods:

• The study involved 650 adult participants.
• Psychometric evaluation included item analysis, factor analysis (exploratory and second-order), and reliability testing (Cronbach's alpha).
• A 43-item instrument was analyzed to determine its factor structure and internal consistency.

Main Results:

• Factor analysis identified nine factors (five benefits, four barriers) explaining 64.9% of the variance.
• Second-order factor analysis confirmed a two-factor structure: benefits and barriers.
• High reliability was demonstrated with standardized Cronbach's alpha coefficients of .952 (total scale), .953 (benefits), and .886 (barriers).

Conclusions:

• The developed instrument demonstrates strong psychometric properties for measuring perceived exercise benefits and barriers.
• The findings support the use of this instrument in research investigating exercise perceptions.
• This validated scale can aid in understanding and addressing factors influencing exercise adherence.