女子大学競泳選手のコンディション変動における因子構造の不変性

抄録

　This study set out to identify the invariance of second-order factorial structure of the fluctuation of condition between in- and pre-season using structural equation modeling (SEM).

　The subject was a female college swimmer who won the 200m individual medley in the inter-collegiate competition in 1998 in Japan. Sixteen items concerned with her perceived physical and mental condition, daily training workout and regular lifestyle were recorded on a quality control (QC) sheet every day for 167 days (24 weeks).

　Exploratory factor analysis (EFA) with the maximum likelihood (ML) method and promax rotation was utilized to extract common factors of the fluctuation of condition. Confirmatory factor analysis (CFA) and second-order factor analysis (SFA) were used to confirm the factor structure model. The invariance of factorial structure of the fluctuation of condition was confirmed in the second-order factor structure.

　Five fluctuation factors of perceived conditions and will, meal satisfaction, amount of practice, perceived fatigue, and weight were extracted and accounted for 54% of the total variance of the 16 variables. The validity of the second-order factor model was confirmed. The degree of the model fitting indicator GFI was .960, and .915 for AGFI, .987 for CFI, .942 for NFI, .039 for RMSEA, 46.233 (.142) for Chi-square (P-value). Configural invariance and loose measurement invariance levels were accepted in the examination of factor invariance. The loose measurement invariance level indicated the highest model fit, and measurement and strong factorial invariance level were not accepted.

　These results indicated that the fluctuation of condition could be measured using common indicators except for some indicators between in- and pre-seasons.