Validation of a Short Form of the Greek Version of the Decisional Balance Scale in the Exercise Domain. (Validación de la versión Griega de la Escala Abreviada de Equilibrio Decisional en el Campo del Ejercicio Físico).

Resumen

Abstract

Although the Decisional Balance Scale (DBS) for exercise has been established to have sound psychometric properties, the factorial structure of this instrument has not been examined in other  European countries. The purpose of this study was to test a short version of the decisional balance scale for exercise in Greek adults. The DBS was administered to 158 (61.2%) women and 100 (38.8%) men. An exploratory factor analysis yielded a positive (pros) factor and a negative (cons) factor. The results from confirmatory factor analysis indicated that the two-factor structure was the best fit for the DBS when it was used with Greek adults. The alpha coefficients were .84 for the positive factor and .81 for the negative factor. The findings are similar to those of the English original, and suggest that the revised DBS can be used in exercise and activity research with Greek adults. However, to expand the usefulness of this instrument across cultures, the DBS should continue to be tested with other Greek populations and settings.

Key words/palabras clave: validation | decisional balance scale | validacion | escala del equilibrio decisional

Resumen

La escala del equilibrio decisional (DBS) presenta unas sólidas propiedades psicométricas, no obstante la estructura factorial de dicho instrumento no se ha examinado en otros países europeos. Este estudio tiene como objetivo probar una versión corta de la escala decisional sobre ejercicio a una muestra de adultos griegos. La DBS revisada se administró a 158 (61.2%) participantes mujeres y 100 (38.8%) hombres. El análisis factorial exploratorio mostró la presencia de dos factores, uno positivo (los pros) y uno negativo (los contras). Los resultados del análisis factorial confirmatorio indicaron que la mejor solución factorial para la versión griega de la escala DBS se componía de una doble estructura. Los coeficientes alpha fueron de .84 para el factor positivo y de .81 para el factor negativo. Los hallazgos de este estudio fueron similares a los de la versión original, indicando que la revisada DBS es adecuada para utilizarse en investigaciones sobre la actividad física y el ejercicio con participantes griegos adultos. No obstante para poder extender el uso de este instrumento en diferentes culturas, la DBS debería continuar a ser probada a diferentes poblaciones griegas y distintos contextos. 

doi:10.5232/ricyde2008.01101

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References/referencias

Bentler, P.M. (1990). Comparative fit indexes in structural models. Psychological Bulletin, 107, 238-246.
doi:10.1037/0033-2909.107.2.238
PMid:2320703

Buxton, K., Wyse, J., & Mercer, T. (1996). How applicable is the stages of change model to exercise behavior? A review. Health Education Journal, 55, 239-257.
doi:10.1177/001789699605500211

Cattell, R.B. (1966). The scree test for the number of factors. Multivariate Behavioral Research, 3, 245-276.
doi:10.1207/s15327906mbr0102_10

Crespo, C. J., Keteyian, S. J., Heath, G. W., & Sempos, C. T. (1996). Leisure-time physical activity among U.S. adults: Results from the Third National Health and Nutrition Examination Survey. Archives of Internal Medicine, 156, 93-98.
doi:10.1001/archinte.156.1.93
PMid:8526703

Fan, X., & Sivo, S. A. (2005). Sensitivity of fit indexes to misspecified structural or measurement model components: Rationale of two-index strategy revisited. Structural Equation Modeling, 12, 334-367.
doi:10.1207/s15328007sem1203_1

Hambleton, R.K., & Kanjee, A. (1995). Increasing the validity of cross-cultural assessments: Use of improved methods for test adaptations. European Journal of Psychological Assessment, 11, 147-157.
doi:10.1027/1015-5759.11.3.147

Hu, L., & Bentler, P. M. (1999). Cutoff criteria for fit indices in covariance structure analysis: conventional criteria versus new alternatives. Structural Equation Modeling, 6, 1-55.
doi:10.1080/10705519909540118

Marcus, B. H., Rakowski, W., & Rossi, J. S. (1992). Assessing motivational readiness and decision making for exercise. Health Psychology, 11, 257-261.
doi:10.1037/0278-6133.11.4.257
PMid:1396494

Marsh, H. W., Hau, K. T., & Wen, Z. (2004). In search of golden rules: Comment of hypothesis-testing approaaches to setting cutoff values for fit indexes and dangers in overgeneralizing Hu and Bentler's (1999) findings. Structural Equation Modeling, 11, 320-341.
doi:10.1207/s15328007sem1103_2

Martinez–Gonzalez, A. M., Varo, J. J., Santos, L. J., De Irala, J., Gibney, M., Kearney, J., et al. (2001). Prevalence of physical education during leisure time in the European Union. Medicine and Science in Sports and Exercise, 33, 1142-1146.
doi:10.1097/00005768-200107000-00011

Nigg, C. R., & Courneya, K. S. (1998). Transtheoretical model: Examining adolescent exercise behavior. Journal of Adolescent Health, 22, 214–224.
doi:10.1016/S1054-139X(97)00141-9

Plotnikoff, R. C., Blanchard, C., Hotz, S. B., & Rhodes, R. (2001). Validation of the decisional balance scales in the exercise domain from the transtheoretical model: A longitudinal test. Measurement in Physical Education and Exercise Science, 5, 191-206.
doi:10.1207/S15327841MPEE0504_01

Preacher, K. J., & MacCallum, R. C. (2003). Repairing Tom Swift’s electric factor analysis machine. Understanding Statistics, 2, 13-43.
doi:10.1207/S15328031US0201_02

Prochaska, J. O., & DiClemente, C. C. (1983). Stages and processes of self-change of smoking: Toward an integrative model of change. Journal of Consulting and Clinical Psychology, 51, 390-395.
doi:10.1037/0022-006X.51.3.390
PMid:6863699

Prochaska, J. O., & Velicer, W. F. (1997). The transtheoretical model of health behavior change. American Journal of Health Promotion, 12, 38-48.
PMid:10170434

Prochaska, J. O., Velicer, W. F., Rossi, S. R., Goldstein, M. G., Marcus, B. H., Rakowski, W. et al. (1994). Stages of change and decisional balance for twelve problem behaviors. Health Psychology, 13, 39-46.
doi:10.1037/0278-6133.13.1.39
PMid:8168470

Steptoe, A., Wardle, J., Fuller, R., Holte, A., Justo, J., Sanderman, R. et al. (1997) Leisure-time physical exercise: Prevalence, attitudinal correlates and behavioral correlates among young Europeans from 21 countries. Preventive Medicine, 26, 845–854.
doi:10.1006/pmed.1997.0224
PMid:9388797

Steiger, J. H. (1990). Structural model evaluation and modification: An interval estimation approach. Multivariate Behavioral Research, 25, 173-180.
doi:10.1207/s15327906mbr2502_4

Tucker, L. R., & Lewis, C. (1973). The reliability coefficient for maximum likelihood factor analysis. Psvchometrica, 38, 1-10.
doi:10.1007/BF02291170

Velicer, W. F., DiClemente, C. C., Prochaska, J. O., & Brandenburg, N. (1985). A decisional balance measure for predicting smoking cessation. Journal of Personality and Social Psychology, 48, 1279-1289.
doi:10.1037/0022-3514.48.5.1279
PMid:3998990
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