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This study presents data collected over the past 10 years on the muscle fiber type composition of the vastus lateralis muscle of young men and women. Biopsies were taken from the vastus lateralis muscle of 55 women (21.2+/-2.2 yr) and 95 men (21.5+/-2.4 yr) who had volunteered to participate in various research projects. Six fiber types (I, IC, IIC, IIA,(More)
This study describes the events occurring in exercise-induced muscular necrosis. Biopsies of the gastrocnemius muscles of volunteer human marathon runners were extracted prior to and at intervals for 7 days following a marathon, and investigated ultrastructurally. Most of the preparations, including the pre-marathon samples, showed evidence of muscle fiber(More)
Thirty-four untrained women participated in a 6-week program to investigate slow-speed versus “normal” speed resistance-training protocols. Subjects were divided into: slow-speed (SS), normal-speed/traditional-strength (TS), normal-speed/traditional muscular endurance (TE), and non-exercising control (C) groups. Leg press, squats, and knee extensions were(More)
Intramuscular lipid content was investigated in muscle biopsies from 10 well-trained endurance athletes before, immediately after, and 1, 3, 5, and 7 days after a marathon. Diets were controlled throughout the entire period of the study. Triglyceride content was ultrastructurally determined by the use of stereological methods. The volume percent lipid(More)
Muscle biopsies were obtained from the vastus lateralis of 14 male subjects: 3 long distance runners, 2 world class power lifters and 9 active, although not highly trained, individuals used as controls. The fibers were investigated by electron microscopy and the mitochondrial volume percent, lipid volume percent and Z-line width were analyzed(More)
Muscle biopsies were taken from the vastus lateralis muscle of an elite power lifter during training and following a 7-month detraining period. The effects of detraining were investigated by combining ultrastructure, histochemistry, and pertinent metabolic data. Muscle fibers were classified ultrastructurally as fast-twitch and slow-twitch. Fast-twitch(More)
To investigate the capacity to hypertrophy and the satellite cell populations to change with age, the nucleo-cytoplasmic relationships and satellite cells were compared in skeletal muscles of young and elderly men before and after strength training. Vastus lateralis muscle biopsies were taken before and after 8 (young) or 16 weeks (elderly men) of strength(More)
(2002). Increased rate of force development and neural drive of human skeletal muscle following resistance training.kinen, K. (2005). Short vs. long rest period between the sets in hypertrophic resistance training: influence on muscle strength, size, and hormonal adaptations in trained men. (2003). Acute hormonal and neuromuscular responses and recovery to(More)
Relationship between walking capacity and maximal exercise capacity, strength and motor deficiency in adult hemiplegic stroke patients. Annales de Réadaptation et de Médecine Physique. 49:614-620. 2006. The Olympic brain. Does corticospinal plasticity play a role in acquisition of skills required for high-performance sports? skill training and strength(More)
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