Definition The force-velocity relationship describes how muscle force depends upon the velocity of movement or vice versa . Characteristics Quantitative Description The seminal experiments of A.V. Hill showed that the velocity of shortening in actively contracting skeletal muscle depended upon the force ...
非本书图片 Force-velocity relationship 可能会有些惊讶的是,肌肉产生的力量不仅取决于其长度,还取决于长度变化的速率。我们用力-速度曲线(图4.9)来表征这种速率依赖性。这种关系最早是由A.V. Hill在1938年观察到的 力量依赖于速度的原因如下。肌节通过交叉桥循环产生力量,在这一过程中,肌球蛋白头部与肌动蛋白丝结...
Changes in inotropy also alter the force-velocity relationship. If the inotropic state of the cardiac fiber is increased, there is a parallel shift in the force-velocity curve such that there is an increase in both Vmax and Fmax (see figure). The increase in velocity at any given preload ...
摘要: The force–velocity relationship for a single muscle fibre is commonly described using a hyperbolic equation. In contrast, in-vivo experiments on movements requiring coordination of multiple joints hav关键词: Musculoskeletal Modelling Muscle Mechanics Force - velocity relationship Cycling ...
A mathematical model of the force: velocity properties of muscle with various combinations of fast- and slow-twitch fibres may provide insight into why specific velocities may give better predictions of fibre type distribution. In this paper, a mathematical model of the force: velocity relationship ...
De Ruiter CJ, De Haan A (2000) Temperature effect on the force/velocity relationship of the fresh and fatigued human adductor pollicis muscle. Pflugers Arch 440:163–170 PubMed Google Scholar Vollestad NK, Sejersted I, Saugen E (1997) Mechanical behaviour of skeletal muscle during intermittent...
Thus, the force-velocity relationship in QR was more concave than that in AL; a/P_o values in the mean were 0.43 and 0.26 for AL and QR, respectively. 2)The maximum mechanical power in QR was about 25% less than that in AL. 3)The amount of action potentials during shortening, ...
Isokinetic Testing: Sensitivity of the Force-Velocity Relationship Assessed through the Two-Point Method to Discriminate between Muscle Groups and Particip... In this study we aimed to evaluate the sensitivity of the force-point (F-v) relationship assessed through the two-point method to ...
Fig. 2.8. Force-velocity relationship. A.V. Hill’s force-velocity curve shows that the speed at which a muscle changes length also affects the force it can generate. The shortening velocity increases as the force declines, and so increasing force results in the decline of shortening velocity...
Mercier J, Mercier B, Prefaut C. Blood lactate increases during the force velocity exercise test. Int J Sports Med 1991; 12 (1): 17–20 ArticlePubMedCASGoogle Scholar Bergström M, Hultman E. Relaxation and force during fatigue and recovery of human quadriceps muscle: relations to metaboli...