UNASSIGNED: The purpose of this study was to examine whether inter- and intramuscular differences in @entity1184 induced by resistance training correspond to differences in muscle activation during the first training session. Eleven young @entity1 completed 12  weeks of training intervention for knee extension. Before and after the intervention, T1-weighted magnetic resonance (MR) images were recorded to determine the volume and anatomical cross-sectional area ( @entity10002 ) along the length of the individual muscles of the @entity121 . The T2-weighted MR images were also acquired before and immediately after the first training session. The T2 was calculated for each pixel within the @entity121 , from which the muscle activation was evaluated as %activated volume and area. The results showed that the %activated volume after the first training session was significantly higher in the vastus intermedius than the vastus medialis. However, the relative change in muscle volume after the training intervention was significantly greater in the rectus femoris than the vasti muscles (vastus lateralis, intermedius and medialis). Within the rectus femoris, both the %activated area and relative increase in @entity10002  were significantly greater in the distal region than the proximal region. In contrast, the %activated area and relative increase in @entity10002 of the vasti were nearly uniform along each muscle. These results suggest that the muscle activation during the first training session is associated with the intramuscular difference in @entity1184 induced by training intervention, but not with the intermuscular difference.

Inter- and intramuscular differences in training-induced XXXX of the @entity121 : association with muscle activation during the first training session.

@entity1184 :: ('MESH:D006984', 'Disease') :: ['hypertrophy'] @entity1 :: ('9606', 'Species') :: ['men'] @entity10002 :: ('1161', 'Gene') :: ['CSA'] @entity121 :: ('MESH:D009135', 'Disease') :: ['quadriceps femoris']
@entity1184 :: (MESH:D006984,Disease) :: ['hypertrophy']
