Results 201 to 210 of about 96,520 (257)

Variability of grip strength during isometric contraction

Ergonomics, 1995
The use of measures of strength variability as a means of determining sincerity of effort is becoming a more common practice, particularly in medico-legal and rehabilitation settings. The stability of such variability measures, however, has not been documented.
A H, Fairfax, R, Balnave, R D, Adams
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Interactions between fatiguing and nonfatiguing isometric contractions

Journal of Applied Physiology, 1981
Isometric contractions of the handgrip muscles were exerted by eight male subjects (age range 19-24 yr) to determine the relationship between fatiguing and nonfatiguing isometric contractions. In a first series of experiments, subjects exerted fatiguing isometric contractions at tensions of 25, 40, or 70% of the maximum strength of the subjects (MVC ...
D E, Stafford, J S, Petrofsky
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Electrical impedance of muscle during isometric contraction

Physiological Measurement, 2003
Non-invasive measurements of the 50 kHz impedance of the anterior forearm show that the resistance and reactance increase under voluntary isometric contraction of the finger flexor muscles. The relationship between impedance and force is nonlinear, dependent on the type of test, the history of prior exercise, and the health status of the subject ...
Carl A, Shiffman, Ronald, Aaron, Seward B, Rutkove   +2 more
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Capillary reserve in isometrically contracting dog hearts

American Journal of Physiology-Heart and Circulatory Physiology, 1977
Page H276: W. N. Duran, T. H. Marsicano, and R. W. Anderson. “Capillary reserve in isometrically contracting dog hearts.” In the citation of the Journal in the third line of the abstract, the volume number should read 233.
W N, Durán, T H, Marsicano, R W, Anderson   +2 more
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Motor unit recruitment during prolonged isometric contractions

European Journal of Applied Physiology and Occupational Physiology, 1993
Motor unit recruitment patterns were studied during prolonged isometric contraction using fine wire electrodes. Single motor unit potentials were recorded from the brachial biceps muscle of eight male subjects, during isometric endurance experiments conducted at relative workloads corresponding to 10% and 40% of maximal voluntary contraction (MVC ...
Fallentin, Nils, Jørgensen, Kurt, Simonsen, Erik Bruun   +2 more
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Level of Isometric Strength and Isometric Endurance in Repeated Contractions

Research Quarterly. American Association for Health, Physical Education and Recreation, 1966
Abstract Thirty male subjects were given 20 trials of isometric wrist flexion on each arm. Each trial consisted of 5 sec. of maximum exertion followed by a 30 sec. rest period. Subjects were ranked on the basis of the first two trials for each of the limbs and divided into three groups of 10 subjects each representing high, middle, and low levels of ...
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Duration of a Maximal Isometric Muscular Contraction

Research Quarterly. American Association for Health, Physical Education and Recreation, 1969
Abstract The maximum force exerted by forearm flexors, during isometric contraction at 60, 100 and 120 degrees at the elbow joint, was measured on nine male subjects by means of an electric dynamometer. The intensity of the effort was recorded in ft-lb. of torque to make measurements independent of the length of the forearm.
R, Moudgil, P V, Karpovich
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The Relations Between Isometric and Isotonic Contractions

Archives Internationales de Physiologie et de Biochimie, 1960
(1960). The Relations Between Isometric and Isotonic Contractions. Archives Internationales de Physiologie et de Biochimie: Vol. 68, No. 1, pp. 181-189.
A, ROSENBLUETH, R, RUBIO
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Muscle Fatigue Induced by Sustained Isometric Contraction

Human Factors: The Journal of the Human Factors and Ergonomics Society, 1973
An important potential thermodynamic criterion for the condition of muscle fatigue induced by a single sustained isometric contraction is discussed, and a method is suggested for its use in determining the duration for which any given static contraction will be sustained before the condition of fatigue is reached.
N V, Gillani, D N, Ghista
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Regulation of isometric contraction in skeletal muscle

Experimental Neurology, 1976
The purpose of this study was to determine whether differences in isometric twitch contraction times of skeletal muscles are related more closely to myosin adenosine triphosphatase (ATPase) activity or to the ability of the sarcotubules to accumulate Ca2+.
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