Muscle metabolism during intense, heavy-resistance exercise

1986 ◽  
Vol 55 (4) ◽  
pp. 362-366 ◽  
Author(s):  
Per A. Tesch ◽  
Erland B. Colliander ◽  
Peter Kaiser
Keyword(s):  
Resistance Exercise ◽  
Muscle Metabolism ◽  
Heavy Resistance Exercise

Changes in Hormonal Concentrations after Different Heavy-Resistance Exercise Protocols in Women

1993 ◽  
Author(s):  
William J. Kraemer ◽  
Steven J. Fleck ◽  
Joseph E. Dziados ◽  
Everett A. Harman ◽  
Louis J. Marchitelli
Keyword(s):  
Resistance Exercise ◽  
Heavy Resistance Exercise

The Acute Effects of Androstenedione Supplementation in Healthy Young Males

2000 ◽  
Vol 25 (1) ◽  
pp. 68-78 ◽  
Author(s):  
Craig S. Ballantyne ◽  
Stuart M. Phillips ◽  
Jay R. Macdonald ◽  
Mark A. Tarnopolsky ◽  
J. Duncan Macdougall
Keyword(s):  
Luteinizing Hormone ◽  
Resistance Exercise ◽  
Elevated Plasma ◽  
Acute Effects ◽  
Double Blind ◽  
Male Athletes ◽  
Young Males ◽  
Plasma Estradiol ◽  
Key Words Testosterone ◽  
Heavy Resistance Exercise

We examined the effects of androstenedione supplementation on the hormonal profile of 10 males and its interaction with resistance exercise. Baseline testosterone, luteinizing hormone, estradiol, and androstenedione concentrations were established by venous sampling at 3 hr intervals over 24 hr. Subjects ingested 200 mg of androstenedione daily for 2 days, with second and third day blood samples. Two weeks later, they ingested androstenedione or a placebo for 2 days, in a double-blind, cross-over design. On day 2, they performed heavy resistance exercise with blood sampled before, after, and 90 min post. The supplement elevated plasma androstenedione 2-3-fold and luteinizing hormone ∼70% but did not alter testosterone concentration. Exercise elevated testosterone, with no difference between conditions. Exercise in the supplemented condition significantly elevated plasma estradiol by ∼83% for 90 min. Androstenedione supplementation, thus, is unlikely to provide male athletes with any anabolic benefit and, with heavy resistance exercise, elevates estrogen. Key Words: testosterone, luteinizing hormone, estradiol, fluid shifts, resistance exercise

Blood flow restriction late in recovery after heavy resistance exercise hampers muscle recuperation

2017 ◽  
Vol 118 (2) ◽  
pp. 313-320 ◽  
Author(s):  
Kestutis Bunevicius ◽  
Albinas Grunovas ◽  
Tomas Venckunas ◽  
Kristina Poderiene ◽  
Eugenijus Trinkunas ◽  
...  
Keyword(s):  
Blood Flow ◽  
Resistance Exercise ◽  
Blood Flow Restriction ◽  
Flow Restriction ◽  
Heavy Resistance Exercise

Exercise and Recovery Responses of Lymphokines to Heavy Resistance Exercise

2000 ◽  
Vol 14 (3) ◽  
pp. 344-349 ◽  
Author(s):  
JILL A. BUSH ◽  
KEIICHIRO DOHI ◽  
ANDREA M. MASTRO ◽  
JEFF S. VOLEK ◽  
J. MICHAEL LYNCH ◽  
...  
Keyword(s):  
Resistance Exercise ◽  
Heavy Resistance Exercise

Effect of heavy-resistance exercise training on muscle fiber composition in young rats

1990 ◽  
Vol 69 (2) ◽  
pp. 434-437 ◽  
Author(s):  
K. E. Yarasheski ◽  
P. W. Lemon ◽  
J. Gilloteaux
Keyword(s):  
Exercise Training ◽  
Resistance Exercise ◽  
Muscle Fiber ◽  
Rectus Femoris ◽  
Type I ◽  
Resistance Exercise Training ◽  
Fiber Composition ◽  
Deep Region ◽  
Heavy Resistance Exercise ◽  
Type I Fibers

The purpose of this investigation was to determine whether heavy-resistance exercise training alters the skeletal muscle fiber composition of young rats. Ten male Long Evans rats (3 wk old) were trained to lift progressively heavier weights, which were secured to the rats' tails, while they ascended a 40-cm 90 degree mesh incline 20 times/day 5 days/wk for a food reward. After 8 wk of training, they lifted 406 +/- 19 (SD) g in addition to their body weight (261 +/- 9 g). Compared with 10 sedentary pair-fed rats, no hypertrophy of forelimb muscles (biceps brachii and brachialis) was observed, but rectus femoris wet and dry weights were greater (P less than 0.01) in the trained group. In the deep region of the rectus femoris, type I fiber area was similar between groups, but the trained rats had both a lower (P less than 0.05) percentage of type I fibers and a smaller (P less than 0.05) portion of the total area occupied by type I fibers. The percentage of type IIb fibers in the deep region of the rectus femoris was also similar between groups, but the portion of the deep area composed of type IIb fibers was greater (P less than 0.05) in the trained rats. In the superficial region of the rectus femoris, the trained rats' type IIb fibers were larger (P less than 0.01) and occupied a greater (P less than 0.05) portion of the superficial muscle area.(ABSTRACT TRUNCATED AT 250 WORDS)

scholarly journals THE INFLUENCE OF AGE ON MUSCLE FIBER RECRUITMENT PATTERNS DURING HEAVY RESISTANCE EXERCISE.

1995 ◽  
Vol 27 (Supplement) ◽  
pp. S234
Author(s):  
S. V. Fortunato ◽  
N. Constantino ◽  
D. M. Hyslop ◽  
R. A. Wiswell
Keyword(s):  
Resistance Exercise ◽  
Muscle Fiber ◽  
Heavy Resistance Exercise ◽  
Recruitment Patterns
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