An athlete is planning performing some knee extension exercises. He sits on the end of a...
An athlete is planning performing some knee extension exercises. He sits on the end of a bench so that his legs dangle in the air. A mass was attached (25 kg) to their right ankle and then the right leg was held out straight (0 deg knee angle) and paused. If the length of their lower leg between the knee and ankle is 17 inches, and the moment arm of the quadriceps femoris is 20 mm. What is the force developed in the quadriceps femoris?
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An athlete is planning performing some knee extension exercises.
He sits on the end of a...
PROBLEM 2 Knee Extension - The angular motion of the lower leg about the knee joint,...
PROBLEM 2 Knee Extension - The angular motion of the lower leg about the knee joint, and the forces and torques produced by the muscles crossing the knee joint during knee flexions and extensions have been investigated by a number of researchers utilizing different experimental techniques. One of these techniques is discussed here. Consider the person illustrated in Fig. 10.12. The test subject is sitting on a table, with the back placed against a back rest and the lower legs...
3. Which of the following methods should be used to check an athlete’s responsiveness? a. Slap...
3. Which of the following methods should be used to check an athlete’s responsiveness? a. Slap the athlete’s face while calling his name. b. Wiggle the athlete’s foot. c. Tap or squeeze the athlete’s shoulder and ask, Are you all right? d. Poke the athlete’s arm or leg. e. Place smelling salts under the athlete’s nose. 4. If the AED indicates "No shock indicated/advised," you should leave the AED pads on. a. true b. false 5. You coach a women’s...
PROBLEM 2 Knee Extension - The angular motion of the lower leg about the knee joint, and the forces and torques produced by the muscles crossing the knee joint during knee flexions and extensions have been investigated by a number of researchers utilizing different experimental techniques. One of these techniques is discussed here. Consider the person illustrated in Fig. 10.12. The test subject is sitting on a table, with the back placed against a back rest and the lower legs...
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