Development and validation of the Cystic Fibrosis Decisional Balance for Physical Activity scale (CF-DB-PA)

• Published in: BMC pulmonary medicine 2021-04, Vol.21 (1), p.121-9, Article 121
• Main Authors: Filleul, Valentine, Ladune, Raphaëlle, Gruet, Mathieu, Falzon, Charlène, Fuchs, Amélie, Mély, Laurent, Hayotte, Meggy, Vallier, Jean-Marc, Giovannetti, Philippe, Ramel, Sophie, Vuillemin, Anne, Corrion, Karine, d'Arripe-Longueville, Fabienne
• Format: Article
• Language: English
• Subjects: Adult; Barriers and facilitators; Care and treatment; Cystic Fibrosis; Cystic Fibrosis - psychology; Cystic Fibrosis - rehabilitation; Decisional balance; Delphi method; Evaluation; Exercise; Exercise - psychology; Factor analysis; Factor Analysis, Statistical; Female; France; Health surveys; Human health and pathology; Humans; Life expectancy; Life Sciences; Male; Patient Acceptance of Health Care - psychology; Perceptions; Physical activity; Physical fitness; Physical training; Psychological aspects; Psychometrics - methods; Pulmonology; Pulmonology and respiratory tract; Quality of Life; Questionnaire; Questionnaires; Reproducibility of Results; Santé publique et épidémiologie; Social support; Sociodemographics; Surveys; Surveys and Questionnaires; Tissues and Organs; Validity; Young Adult
• ISSN: 1471-2466; 1471-2466
• DOI: 10.1186/s12890-021-01471-0

People with cystic fibrosis (pwCF) derive several physiological and psychological benefits from regular physical activity (PA), but the practice is lower than recommended. Knowledge about the facilitators of and barriers to PA at the individual level is important to act positively on PA behaviors. This study validated the Cystic Fibrosis Decisional Balance for Physical Activity scale (CF-DB-PA) for adults with CF. French adults with CF were recruited in several specialist centres in France. The CF-DB-PA scale was validated following a quantitative study protocol comprising four stages: (1) tests of the clarity and relevance of a preliminary 44-item version and reduction analysis, (2) confirmatory factor analysis and tests of dimensionality through equation modelling analysis, (3) tests of reliability with Cronbach alphas for the internal consistency and a test-retest with a 2-to-3 week interval for temporal stability, and 4) tests of construct validity with Spearman correlations to measure the associations between each subscale and the theoretically related constructs (i.e., quality of life, PA and exercise tolerance). A total of 201 French adults with CF participated in the validation study. The CF-DB-PA comprises 23 items divided into two factors: facilitators of and barriers to PA. Each factor is divided into three subscales: physical, psychological and environmental. The factors (facilitators and barriers) can be used independently or combined as a whole. A general score of decisional balance for PA can also be calculated. The bi-factor model presented satisfactory adjustment indexes: χ (194) = 362.33; p