Results 261 to 270 of about 51,654 (310)

Maximum A-isometric part of an A-contraction and applications

Israel Journal of Mathematics, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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The Influence of Competition on the Efficiency of an Isometric Muscle Contraction

Journal of Motor Behavior, 1969
36 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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Comments on ‘Assessment of Isometric Muscle Contractions’

Ergonomics, 1972
The 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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Effects of temperature on isometric contraction of rat muscle

American Journal of Physiology-Legacy Content, 1964
The 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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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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Spinal cord modulation associated with isometric contractions

Brain Research, 2002
The dual-strategy hypothesis explains single-joint voluntary movement by dividing movements into two different strategies and suggesting that different excitation pulses modulate these movements. The existence of this excitation pulse was evaluated by quantifying magnitude and timing changes in the H-reflex (changes in spinal excitability) prior to a ...
Julie A, Robichaud, Denis, Brunt, L Keith, Tennant   +2 more
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Isometric contractions in the patellofemoral pain syndrome

Archives of Orthopaedic and Traumatic Surgery, 1986
The 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, B, Krebs, C, Tidemand-Dal, K, Aaris   +3 more
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Perception of effort in isometric and dynamic muscular contraction

European Journal of Applied Physiology and Occupational Physiology, 1979
The perception of muscular effort was studied using estimation and production methods in the adductor pollicis and quadriceps. A psychometric scale (percentage magnitude) was used. Static contractions were studied in the adductor pollicis, and both dynamic (isokinetic) and static contractions were studied in quadriceps. Linear and logarithmic equations
D F, Cooper, G, Grimby, D A, Jones, R H, Edwards   +3 more
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Energetics of isometric contraction in porcine carotid artery

American Journal of Physiology-Cell Physiology, 1984
The rate of ATP utilization ( JATP ) and unloaded shortening velocity ( Vus ) of porcine carotid artery were studied during tension development and maintenance to assess the importance of mechanisms proposed to account for its high economy of tension maintenance. Previous work from our laboratory established that the rate of O2 consumption ( JO2 ) can
J M, Krisanda, R J, Paul
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Energetics of isometric contractions as a function of muscle temperature

American Journal of Physiology-Cell Physiology, 1983
The energetic cost of generating isometric force in isolated frog muscle was examined at 10, 20, and 30 degrees C. Recovery O2 consumption (delta O2) and recovery lactate production (delta Lact) were measured under conditions in which O2 was not limiting metabolism.
L C, Rome, M J, Kushmerick
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