EXCI 352 Lecture Notes - Lecture 2: Pennate Muscle, Angular Velocity, Biomechanics
13 Jan 2017
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Document Summary
Although the word strength is often associated with slow velocities and the word power with high velocities of movement, both variables reflect the ability to exert force at a given velocity. Power is a direct mathematical function of force and velocity. If at any instant, any two of the variables force, velocity, and power are known, the third can be calculated. It is not correct to associate strength with low speed and power with high speed. Strength is the capacity to exert force at any given velocity, and power is the mathematical product of force and velocity at whatever speed. Several biomechanical factors are involved in the manifestation of human strength, including: Neural control affects the maximal force output of a muscle by determining which and how many motor units are involved in a muscle contraction *recruitment) and the rate at which the motor units are fired (rate coding)
