Estimation of muscle fiber composition using magnetic resonance imaging (MRI).
- VernacularTitle:磁気共鳴映像法（ＭＲＩ）による筋線維組成の推定
- Author:
SHIN-YA KUNO
;
SHIGERU KATSUTA
;
MASAYOSHI AKISADA
;
IZUMI ANNO
;
KUNIHIKO MATSUMOTO
- Publication Type:Journal Article
- Keywords:
MRI;
Muscle fiber composition;
Relaxation time
- From:Japanese Journal of Physical Fitness and Sports Medicine
1988;37(5):376-382
- CountryJapan
- Language:Japanese
-
Abstract:
The relationship between relaxation time and muscle fiber composition was investigated in 16 males.
A highly positive correlation was found between muscle fiber composition and relaxation time. In addition, higher proportions of fast-twitch fibers were associated with longer relaxation times, indicating that the fast-twitch fiber has a longer relaxation time than the slow-twitch fiber.
Multiple regression analysis, which was conducted to investigate the suitability of relaxation time as a model for estimating muscle fiber composition, revealed that the T 1 and T 2 were significantly related to muscle fiber composition.
Therefore, the results of the present study indicate that relaxation time obtained by MRI can be used to estimate muscle fiber composition.
