Lane, A., University of Wolverhampton and Firth, S., Brunel University, United Kingdom and Terry, P., University of Southern Queensland, Australia
The purpose of the present study was twofold. First, to investigate the factorial validity of a mood measure before and after exercise. Second, to investigate the influence of exercise session on mood changes. 975 participants completed the Profile of Mood States-A (Terry, Lane, Lane, & Keohane, 1999) immediately before and after an exercise session. Consistent with recommendations made previously (Berger & Motl, 2000), exercise sessions were conducted at moderate intensity and were free from interpersonal competition. Confirmatory factor analysis of the POMS-A before (RCFI = .908) and after (RCFI = .914) exercise indicated acceptable fit indexes. Repeated Measures MANOVA to compare mood changes by exercise type indicated that mood changed significantly (Wilks' lambda 6,947 = .69, p <.001, Eta2 = .31). Exercise was associated with significant reductions in Anger (F = 73.63, p <.001, Eta2 = .07), Confusion (F = 81.30, p < .001, Eta2 = .08), Depression (F = 92.69, p <.001, Eta2= .09) and Tension (F = 227.37, p <.001, Eta2 = .19) with increased Vigor (F = 143.83, p < .001, Eta2 = .13).Findings from the present study showing mood enhancement is associated with exercise are consistent with previous research (Berger & Motl, 2000). We suggest that the 24-item POMS-A can provide a brief and valid measure of mood suitable for assessing mood before and after exercise.