Velocity:velocity is the rate of change of position of the athlete. In general, force, including muscle force, is measured in Newtons. This muscle force pulls on bones which creates joint torque. Muscle Force: when muscles contract or are stretched, they create muscle force. In general, force, including GRF, is measured in Newtons. When the foot strikes the ground during maximum speed sprinting, at first the force is projected forward which is called braking forces, and once the COM passes over the foot, the force is projected rearward which is called propulsive forces. During vertical jumping, most of the force produced is vertical. However, in sprinting, you have vertical forces as well as horizontal forces. When you jump, sprint, or perform an Olympic lift, you exert force into the ground. GRFs: GRF stands for ground reaction force. I created a special tab on the right hand column of the blog named “ Biomechanics Terminology” so you can find this particular article whenever you need it.įorce: force equals mass times acceleration and is a vector quantity, meaning that it’s displayed in a particular direction. I have listed some definitions below that I would like for my readers to try to familiarize themselves with as it will allow them to better comprehend future blogposts, articles, videos, and interviews. I try my best to educate my readers so that over time they can build upon their knowledge and reach superior levels of understanding with regards to human movement. Possessing sufficient knowledge in this area is paramount for properly understanding resistance training.
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