Psychometric Evaluation of the Short Form of Situational Influences Scale for Stretching Exercise among Office Employees Based on the Health Promotion Model

Background: situational influences can facilitate or impede stretching exercisebehaviours. however, since there is no measurement to assess situationalinfluences among office employees, it might be difficult to understand the roleof situational influences on stretching exercises. the current study aimed toevaluate the psychometric characteristics of short form of situational influencesscale for predicting stretching exercise among office employers based on thehealth promotion model (hpm).methods: by multistage cluster sampling method, this cross-sectional studywas conducted among 385 office employees selected from the health networksat shahid beheshti university of medical sciences of iran (sbums) who wereassessed through the short form of situational influences scale. exploratoryfactor analysis (efa), confirmatory factor analysis (cfa), and cronbach’s alphawere employed.results: the mean age of the office employees was 39.4±7.76 years. contentvalidity index (cvi) and content validity ratio (cvr) of each question weregreater than 0.79. the result of efa with principal component analysis showedone factor (situational influences) with 43.6% cumulative variance and kmowith 90.4% (p<0.001). this was a good fit index in cfa. the reliability of thequestionnaire was confirmed through acceptable cronbach’s alpha (α=0.79).regarding cfa, the result showed remsea=0.048, gfi=0.978, agfi=0.986confirmed with cronbach’s alpha (α=79 %) and icc=0.71 95% ci (0.69, 0.79).conclusion: the current study revealed that the short form of situationalinfluences scale for stretching exercise is a valid instrument. therefore, it canbe used as a reliable and valid instrument to investigate stretching exercisebehaviours among office employers.