CAUSAL STRUCTURE BETWEEN MUSCLE, MOTOR AND LIVING FUNCTIONS IN COMMUNITY DWELLING ELDERS
- VernacularTitle:地域在住中高齢者における筋機能, 運動機能, 生活機能間の因果構造
- Author:
TAKAHIKO NISHIJIMA
;
KOYA SUZUKI
;
KEISUKE OHTSUKA
;
HIDENORI TANAKA
;
TAKAHIRO NAKANO
;
SHINJI TAKAHASHI
;
HIROTAKA TABUCHI
;
HIROSHI YAMADA
;
ATSUKO KAGAYA
;
TETSUO FUKUNAGA
;
SHIN-YA KUNO
;
MITSUO MATSUDA
- Publication Type:Journal Article
- Keywords:
functional fitness;
physical fitness;
activities of daily living (ADL);
structural equation modeling;
factor invariance
- From:Japanese Journal of Physical Fitness and Sports Medicine
2003;52(Supplement):213-224
- CountryJapan
- Language:Japanese
-
Abstract:
The purpose of this study was to confirm the causal structure model of muscle, motor and living functions utilizing structural equation modeling (SEM) . As subjects, 103 community-dwelling older men and women, aged 65.7±6.9years of age, participated in the study to measure muscle cross-sectional area, maximum voluntary contractions, muscle power, 4 physical performance tests, and 16 questionnaires regarding ability of activities of daily living. The causal structure model of muscle, motor and living functions was hypothesized to be a hierarchical causal structure. The causal structure model of muscle function was hypothesized to be a hierarchical causal structure consisting of 3 sub-domains of muscle mass, muscle strength, and muscle power. Data analysis procedures were as follows : a) testing of construct validity of muscle function variables using confirmatory factor analysis (CFA) in SEM ; b) testing of causal structure using SEM ; c) testing of factor invariance using multi-group analysis for gender. The highest goodness of fit indices was obtained in the causal structure model of muscle, motor and living functions (NFI= .928, CFI= .978, RMSEA =.061) . The causal coefficient of muscle function to motor function was .98 (p<.05), followed by.34 for motor function to living function. From the results of multi-group analysis, the measurement invariance model indicated the highest goodness of fit indices (TLI=.968, CFI .977) . It was concluded that the hierarchical causal relation was among muscle, motor and living functions, and in which muscle function was consisted of 3 sub-domains.
