Results 211 to 220 of about 43,102 (265)
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Isometric Dilations of Commuting Contractions. IV
1986A theorem on unitary dilations of contractions on Hilbert spaces due to \textit{B. Sz.-Nagy} [Acta Sci. Math. 15, 87-92 (1953; Zbl 0052.122)] led to an effective functional calculus for Hilbert space contractions. The paper under review is an interesting addition to the literature on 'harmonic analysis of operators on Hilbert spaces.' For two commuting
Ceauṣescu, Zoia, Suciu, I.
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Regulation of isometric contraction in skeletal muscle
Experimental Neurology, 1976The 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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Maximum A-isometric part of an A-contraction and applications
Israel Journal of Mathematics, 2009zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Comments on ‘Assessment of Isometric Muscle Contractions’
Ergonomics, 1972The work of Rohmert on static work is briefly reviewed and the results he obtained are applied to data obtained by Lloyd et al. It is shown that the two approaches to static work are compatible.
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The use of echocardiography to measure isometric contraction time
American Heart Journal, 1975The current methods for estimating isometric contraction time were discussed. Ultrasonically derived isometric contraction time, using external carotid pulse tracing, phonocardiogram, and the B-point of the mitral echogram was also measured. Recordings were performed in 10 normal subjects, and 15 patients.
G M, Ziady, T, Hardarson, R, Curiel
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The Influence of Competition on the Efficiency of an Isometric Muscle Contraction
Journal of Motor Behavior, 196936 male Ss from collegiate intramural athletic teams were asked to maintain 50% of their maximum voluntary contraction on an iso-metric handle as long as possible. Ss were divided into 2 groups. One group performed individually while the other group, in teams of 3 Ss each, competed for a team prize.
J H, Voor, A J, Lloyd, R J, Cole
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Effects of temperature on isometric contraction of rat muscle
American Journal of Physiology-Legacy Content, 1964The effects of temperature on the basic characteristics of isometric contraction were studied in the triceps surae of white albino rats. The influences of tetanic fusion and Wedensky inhibition on tension development were analyzed. The results showed linear increase of maximal isometric tetanic tension and increase in the rate of rise and fall of ...
X T, TRUONG, B J, WALL, S M, WALKER
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Linear approximations of muscle mechanics in isometric contraction
Biological Cybernetics, 1977The isolated rat gastrocnemius was submitted to tetanic stimulation, with and without a spring in series with the muscle. The resulting isometric myograms allowed description of the properties of simple muscle models which contained linear and non-linear components.
A E, Chapman, P T, Harrower
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Timing of Anticipatory Responses following an Isometric Contraction
Perceptual and Motor Skills, 1994The effects on timing of anticipation following an isometric contraction were investigated. Using a Bassin timer, 35 subjects performed 10 trials for each of 4 forewarning periods at 3 stimulus speeds resulting in 120 trials for the control condition.
B R, Etnyre, J J, DeForest
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Isometric contractions in the patellofemoral pain syndrome
Archives of Orthopaedic and Traumatic Surgery, 1986The role played by the vastus lateralis and vastus medialis obliquus in their alignment of the patella during maximal isometric quadriceps contractions was studied by electromyography in 28 patients with unilateral symptoms of the patellofemoral pain syndrome.
B N, Møller +3 more
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