Whole body muscle hypertrophy from resistance training: distribution and total mass.
OBJECTIVE
To examine the absolute and relative changes in skeletal muscle (SM) size using whole body magnetic resonance imaging (MRI) in response to heavy resistance training (RT).


METHODS
Three young men trained three days a week for 16 weeks.


RESULTS
MRI measured total SM mass and fat free mass (FFM) had increased by 4.2 kg and 2.6 kg respectively after resistance training.


CONCLUSIONS
RT induces larger increases in SM mass than in FFM. RT induced muscle hypertrophy does not occur uniformly throughout each individual muscle or region of the body. Therefore the distribution of muscle hypertrophy and total SM mass are important for evaluating the effects of total body RT on muscle size.
Abe
T
T
Tokyo Metropolitan University, Exercise and Sport Science, Minami-Ohsawa, Hachioji, Tokyo, Japan. abebe@comp.metro-u.ac.jp
Kojima
K
K
Kearns
C F
CF
Yohena
H
H
Fukuda
J
J
D000328:Adult; D001823:Body Composition; D001835:Body Weight; D016552:Ergometry; D015444:Exercise / Q000502:physiology; D006801:Humans; D007866:Leg; D008279:Magnetic Resonance Imaging; D008297:Male; D018482:Muscle, Skeletal / Q000033:anatomy & histology / Q000502:physiology*; D012782:Shoulder; D013848:Thigh; D014891:Weight Lifting / Q000502:physiology*