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Autor:
Charles L. Rice, Arthur J. Cheng
Publikováno v:
Journal of Applied Physiology. 99:1446-1452
The purpose of this study was to assess fatigue and recovery of isotonic power and isometric contractile properties after a series of maximal isotonic contractions. Using a Biodex dynamometer, 13 men [26 yr (SD 3)] performed isotonic [50% of isometri
Publikováno v:
Journal of Applied Physiology. 99:1558-1568
Changes in corticospinal excitability induced by 4 wk of heavy strength training or visuomotor skill learning were investigated in 24 healthy human subjects. Measurements of the input-output relation for biceps brachii motor evoked potentials (MEPs)
Publikováno v:
American Journal of Physiology-Regulatory, Integrative and Comparative Physiology. 289:R805-R813
Dialysis patients have severe exercise limitations related to metabolic disturbances, but muscle fatigue has not been well studied in this population. We investigated the magnitude and mechanisms of fatigue of the ankle dorsiflexor muscles in patient
Autor:
Jesper L. Andersen, Lasse R. Christensen, Jørgen L. Madsen, Per Aagaard, S. Peter Magnusson, Charlotte Suetta, Lars L. Andersen
Publikováno v:
Journal of Applied Physiology. 99:87-94
Previous studies show that cessation of resistance training, commonly known as “detraining,” is associated with strength loss, decreased neural drive, and muscular atrophy. Detraining may also increase the expression of fast muscle myosin heavy c
Autor:
Shanthi Krishnaswami, Tamara B. Harris, Stephen B. Kritchevsky, Bret H. Goodpaster, Andrea M. Kriska, Ann V. Schwartz, Jennifer S. Brach, Eleanor Feingold, Andreas Katsiaras, Anne B. Newman, Rongling Li
Publikováno v:
Journal of Applied Physiology. 99:210-216
We examined the muscle fatigue characteristics in older men and women and determined whether these were related to the size, strength, or quality of muscle. A total of 1,512 men and women aged 70–79 yr from the Health, Aging, and Body Composition S
Autor:
Rodger Kram, Jinger S. Gottschall
Publikováno v:
Journal of Applied Physiology. 99:23-30
To investigate the metabolic cost and muscular actions required for the initiation and propagation of leg swing, we applied a novel combination of external forces to subjects walking on a treadmill. We applied a forward pulling force at each foot to
Autor:
Peihong Cao, Brandon R. Macias, Alan R. Hargens, Shinji Kimura, Toshiaki Ueno, Donald E. Watenpaugh
Publikováno v:
Journal of Applied Physiology. 99:39-44
Astronauts experience spine deconditioning during exposure to microgravity due to the lack of axial loads on the spine. Treadmill exercise in a lower body negative pressure (LBNP) chamber provides axial loads on the lumbar spine. We hypothesize that
Autor:
Daria B. Neidre, Miriam Y. Cortez-Cooper, Hirofumi Tanaka, Allison E. DeVan, Maria M. Anton, Jill N. Cook
Publikováno v:
Journal of Applied Physiology. 98:2287-2291
Decreased central arterial compliance is an emerging risk factor for cardiovascular disease. Resistance training is associated with reductions in the elastic properties of central arteries. Currently, it is not known whether this reduction is from on
Autor:
Jesse R. Modica, Rodger Kram
Publikováno v:
Journal of Applied Physiology. 98:2126-2131
The metabolic cost of leg swing in running is highly controversial. We investigated the cost of initiating and propagating leg swing at a moderate running speed and some of the muscular actions involved. We constructed an external swing assist (ESA)
Autor:
Mikel Egaña, Simon Green
Publikováno v:
Journal of Applied Physiology. 98:2249-2258
To explore the effect of posture on muscle performance, we tested the effects of body tilt angle on the strength, endurance, and fatigue of, and blood flow into, the plantar flexors. Human subjects were fixed to a tilt table that could tilt them from