Factors Predicting the Physical Activity Behavior of Female Adolescents: A Test of the Health Promotion Model / 예방의학회지

OBJECTIVES: Physical activity behavior begins to decline during adolescence and continues to decrease throughout young adulthood. This study aims to explain factors that influence physical activity behavior in a sample of female adolescents using a health promotion model framework. METHODS: This cross-sectional survey was used to explore physical activity behavior among a sample of female adolescents. Participants completed measures of physical activity, perceived self-efficacy, self-esteem, social support, perceived barriers, and perceived affect. Interactions among the variables were examined using path analysis within a covariance modeling framework. RESULTS: The final model accounted for an R2 value of 0.52 for physical activity and offered a good model-data fit. The results indicated that physical activity was predicted by self-esteem (beta=0.46, p<0.001), perceived self-efficacy (beta=0.40, p<0.001), social support (beta=0.24, p<0.001), perceived barriers (beta=-0.19, p<0.001), and perceived affect (beta=0.17, p<0.001). CONCLUSIONS: The findings of this study showed that the health promotion model was useful to predict physical activity behavior among the Iranian female adolescents. Information related to the predictors of physical activity behavior will help researchers plan more tailored culturally relevant health promotion interventions for this population.

[Psychometric properties of the health-promoting lifestyle profile [HPLP II] in a sample of Iranian adolescents]

Objective [s]: Health-promoting behaviors of individuals are important determinants of health status. The objective of this study was to examine the psychometric properties of the Iranian version of health-promoting lifestyle profile II [HPLP II] among adolescent girls

Methods: Pender's Health Promotion Model was the theoretical framework for this cross-sectional study of a sample of 500 high school girls [grade9-11], in Kashan, Iran. The HPLP II reliability was estimated using the Cronbach's alpha coefficient and test-retest. Concurrent validity was estimated by performing Pearson's correlation between the HPLP II, and the 12-item Short Form Health Survey [SF-12], perceived self-efficacy. In addition confirmatory factor analysis [CFA] was performed in order to evaluate construct validity. The data were analyzed using SPSS v.18 and LISREL8.8 programs

Results: The Cronbach's alpha coefficient was 0.86 for the instrument and for subscales ranged from 0.70 to 0.77. The correlation between the HPLP II and the SF-12 and perceived self-efficacy were significant as expected. The confirmatory factor analysis yielded a good estimate of fit [X[2]=6.34, df =2, P = 0.420, NFI = 0.99, CFI = 0.99, RMSEA = 0.066]

Conclusion: The psychometric properties of Iranian version of HPLP II showed satisfactory results and now it can be used in studies of health promotion among young adolescents

Reliability and construct validity of the Iranian version of health-promoting lifestyle profile in a female adolescent population

Health-promoting lifestyle is receiving increasing attention concerning its prominent role in healthcare. This study examined to adapt the health-promoting lifestyle profile II culturally and to assess its psychometric properties. In this cross-sectional study, content validity was established using translation and back-translation procedures, pilot testing of the instrument, and getting views of the expert panel. Concurrent validity was estimated with Pearson's correlation between the HPLP II, the quality of life [SF-12], self-efficacy variables, and demographic variables. Construct validity was evaluated by confirmatory factor analysis [CFA]. Sample size for CFA included 500 people. HPLP II reliability was estimated with Cronbach's alpha coefficients. The content validity Index [CVI] surpassed 0.80 for the HPLP II and for four subscales. The CFA four-factor model represented an acceptable fit. Their factor loadings was more than 0.40. Correlations between the HPLP II and the subscales were acceptable. The relationships between the HPLP II, self-efficacy, SF-12 domain scores, and demographic variables were also significantly positive. Cronbach's alpha coefficient was 0.86 for the HPLP II and for the subscales ranged from 0.70 to 0.77. The shortened HPLP II had satisfactory psychometric properties. The revised 34-item four-factor model had perfect fit. It can be used to measure health-promoting lifestyle in the Iranian female adolescents' population