Psychometric Evaluation of the Short Form of Commitment to a Plan of Action Scale for Stretching Exercise among the Office Employees Based on HPM

Aims Commitment to a plan of action key factors is critical for stretching exercise predicting. However, commitment to a plan of action in stretching exercise across the throughout working conditions is far difficult in Iran; there is no measurement to evaluate commitment to a plan of action among workplace office employees. This study aimed at investigating the short form of confirmatory factor analysis commitment to a plan of action scale for stretching exercise predicting among based on health promotion model (HPM). Materials Methods Using multistage cluster sampling, 385 office employees from Shahid Beheshti University of Medical Sciences of Iran were selected through on a short form of commitment to a plan of action Scale. Exploratory Factor Analysis (EFA), Confirmatory Factor Analysis (CFA) and Cronbach’s alpha were also used. Findings The mean age of the office employees was 39.4±7.76 years. CVI and CVR of each question were 0.7. The result of EFA confirmed one factor or component with the main component technique (commitment to a plan of action) with 71.8% cumulative variance and KMO was 87.2% (p 0.001). This was the good fit index in CFA. The reliability was also explanatory. In the area of CFA, the result showed REMSEA=0.046, GFI=0.907, AGFI=0.814, confirmed with Cronbach’s alpha (α=85.8%) and [ICC =0.74; 95% CI (0.62, 0.74)]. Conclusion This study approved the short form of commitment to a plan of action scale for stretching exercise. However, more advice is provided to ensure a reliable and valid tool for realizing stretching exercise behaviors.