Skeletal muscle adaptations in elastic resistance-trained young men and women

2001 ◽  
Vol 86 (2) ◽  
pp. 112-118 ◽  
Author(s):  
David Hostler ◽  
Chris Schwirian ◽  
Gerson Campos ◽  
Kumika Toma ◽  
Matthew Crill ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Young Men ◽  
Men And Women ◽  
Elastic Resistance ◽  
Muscle Adaptations ◽  
Skeletal Muscle Adaptations

SKELETAL MUSCLE ADAPTATIONS IN ELASTIC RESISTANCE-TRAINED YOUNG MEN AND WOMEN

1999 ◽  
Vol 31 (Supplement) ◽  
pp. S325
Author(s):  
D. Hostler ◽  
C. I. Schwirian ◽  
F. C. Hagerman ◽  
R. S. Staron ◽  
G. Campos ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Young Men ◽  
Men And Women ◽  
Elastic Resistance ◽  
Muscle Adaptations ◽  
Skeletal Muscle Adaptations

scholarly journals Skeletal muscle adaptations to physical inactivity and subsequent retraining in young men

2013 ◽  
Vol 14 (3) ◽  
pp. 247-259 ◽  
Author(s):  
E. L. Campbell ◽  
O. R. Seynnes ◽  
R. Bottinelli ◽  
J. S. McPhee ◽  
P. J. Atherton ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Physical Inactivity ◽  
Young Men ◽  
Muscle Adaptations ◽  
Skeletal Muscle Adaptations

Skeletal muscle adaptations during early phase of heavy-resistance training in men and women

1994 ◽  
Vol 76 (3) ◽  
pp. 1247-1255 ◽  
Author(s):  
R. S. Staron ◽  
D. L. Karapondo ◽  
W. J. Kraemer ◽  
A. C. Fry ◽  
S. E. Gordon ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Resistance Training ◽  
Fiber Type ◽  
Dynamic Strength ◽  
Men And Women ◽  
Leg Extension ◽  
Type Composition ◽  
Muscle Adaptations ◽  
Skeletal Muscle Adaptations ◽  
Maximal Dynamic Strength

An 8-wk progressive resistance training program for the lower extremity was performed twice a week to investigate the time course for skeletal muscle adaptations in men and women. Maximal dynamic strength was tested biweekly. Muscle biopsies were extracted at the beginning and every 2 wk of the study from resistance-trained and from nontrained (control) subjects. The muscle samples were analyzed for fiber type composition, cross-sectional area, and myosin heavy chain content. In addition, fasting blood samples were measured for resting serum levels of testosterone, cortisol, and growth hormone. With the exception of the leg press for women (after 2 wk of training) and leg extension for men (after 6 wk of training), absolute and relative maximal dynamic strength was significantly increased after 4 wk of training for all three exercises (squat, leg press, and leg extension) in both sexes. Resistance training also caused a significant decrease in the percentage of type IIb fibers after 2 wk in women and 4 wk in men, an increase in the resting levels of serum testosterone after 4 wk in men, and a decrease in cortisol after 6 wk in men. No significant changes occurred over time for any of the other measured parameters for either sex. These data suggest that skeletal muscle adaptations that may contribute to strength gains of the lower extremity are similar for men and women during the early phase of resistance training and, with the exception of changes in the fast fiber type composition, that they occur gradually.

Skeletal muscle adaptations to endurance training in 60- to 70-yr-old men and women

1992 ◽  
Vol 72 (5) ◽  
pp. 1780-1786 ◽  
Author(s):  
A. R. Coggan ◽  
R. J. Spina ◽  
D. S. King ◽  
M. A. Rogers ◽  
M. Brown ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Citrate Synthase ◽  
Type I ◽  
Mitochondrial Enzymes ◽  
Maximal Heart Rate ◽  
Lactate Dehydrogenase Activity ◽  
Men And Women ◽  
Muscle Adaptations ◽  
Before And After ◽  
Skeletal Muscle Adaptations

Previous studies of endurance exercise training in older men and women generally have found only minimal skeletal muscle adaptations to training. To evaluate the possibility that this may have been due to an inadequate training stimulus, we studied 23 healthy older (64 +/- 3 yr) men and women before and after they had trained by walking/jogging at 80% of maximal heart rate for 45 min/day 4 days/wk for 9–12 mo. This training program resulted in a 23% increase in maximal O2 consumption. Needle biopsy samples of the lateral gastrocnemius muscle were obtained before and after training and analyzed for selected histochemical and enzymatic characteristics. The percentage of type I muscle fibers did not change with training. The percentage of type IIb fibers, however, decreased from 19.1 +/- 9.1 to 15.1 +/- 8.1% (P less than 0.001), whereas the percentage of type IIa fibers increased from 22.1 +/- 7.7 to 29.6 +/- 9.1% (P less than 0.05). Training also induced increases in the cross-sectional area of both type I (12%; P less than 0.001) and type IIa fibers (10%; P less than 0.05). Capillary density increased from 257 +/- 43 capillaries/mm2 before training to 310 +/- 48 capillaries/mm2 after training (P less than 0.001) because of increases in the capillary-to-fiber ratio and in the number of capillaries in contact with each fiber. Lactate dehydrogenase activity decreased by 21% (P less than 0.001), whereas the activities of the mitochondrial enzymes succinate dehydrogenase, citrate synthase, and beta-hydroxyacyl-CoA dehydrogenase increased by 24–55% in response to training (P less than 0.001–0.05).(ABSTRACT TRUNCATED AT 250 WORDS)

Skeletal Muscle Adaptations to Prolonged Exposure to Extreme Altitude: A Role of Physical Activity?

2008 ◽  
Vol 9 (4) ◽  
pp. 311-317 ◽  
Author(s):  
Masao Mizuno ◽  
Gabrielle K Savard ◽  
Nils-Holger Areskog ◽  
Carsten Lundby ◽  
Bengt Saltin
Keyword(s):  
Physical Activity ◽  
Skeletal Muscle ◽  
Prolonged Exposure ◽  
Muscle Adaptations ◽  
Extreme Altitude ◽  
Skeletal Muscle Adaptations

scholarly journals Training program-induced skeletal muscle adaptations in two men with myotonic dystrophy type 1

2019 ◽  
Vol 12 (1) ◽  
Author(s):  
Marie-Pier Roussel ◽  
Marika Morin ◽  
Mélina Girardin ◽  
Anne-Marie Fortin ◽  
Mario Leone ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Training Program ◽  
Myotonic Dystrophy ◽  
Myotonic Dystrophy Type 1 ◽  
Myotonic Dystrophy Type ◽  
Muscle Adaptations ◽  
Skeletal Muscle Adaptations

scholarly journals The ontogeny of skeletal muscle adaptations that enable long deep dives in Weddell seals

2008 ◽  
Vol 22 (S1) ◽  
Author(s):  
Shane B Kanatous ◽  
Thomas J Hawke ◽  
Stephen J Trumble ◽  
Linnea E Pearson ◽  
Randall W Davis
Keyword(s):  
Skeletal Muscle ◽  
Weddell Seals ◽  
Muscle Adaptations ◽  
Skeletal Muscle Adaptations
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