EBK BASIC BIOMECHANICS
7th Edition
ISBN: 9780100409453
Author: Hall
Publisher: YUZU
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Textbook Question
Chapter 5, Problem 2IP
Describe the directions and approximate ranges of movement that occur at the joints of the human body during each of the following movements:
a. Walking
b. Running
c. Performing a jumping jack
d. Rising from a seated position
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Students have asked these similar questions
Using approximately 400-500 words, choose a sports skill you wish to analyze (note this will be the same sports skill used in a future Unit). Some examples include a free throw shot, softball pitch, soccer kick, baseball swing, etc. Discuss what movements occur at the ankle, knee, hip, spine, shoulder, elbow, and wrist. Compare the movements bilaterally, or both sides. In which planes do these movements occur? What axis of rotation occurs at each joint? Include at least two scholarly references (using APA formatting and style) to guide your answers.
An isometric exercise is one in which the joint angle does not change during the application of muscle force. For instance, you can join your hands together, pushing down with one hand and pushing up with the other. In each arm, the muscles that provide the force are connected to the bones of the arm by tendons. If you increase the forces but keep the angles the same, the muscles will still contract. Explain how this is possible.
Whenever the position of a joint is stabilized at a certain attitude, the nervous system produces this by :-
a- increasing the α-motor neuron discharge to all muscles attached to the jointb- increasing the γ-motor neuron discharge to all muscles attached to the jointc- increasing γ-motor neuron discharge to postural musclesd- co-activation of α and γ-motor neurons innervating the involved muscles
Chapter 5 Solutions
EBK BASIC BIOMECHANICS
Ch. 5 - Prob. 1IPCh. 5 - Describe the directions and approximate ranges of...Ch. 5 - Prob. 3IPCh. 5 - Prob. 4IPCh. 5 - What factors contribute to flexibility?Ch. 5 - Prob. 6IPCh. 5 - How is flexibility related to the likelihood of...Ch. 5 - Prob. 8IPCh. 5 - Explain why grip strength diminishes as the wrist...Ch. 5 - Why is ballistic stretching contraindicated?
Ch. 5 - Prob. 1APCh. 5 - How is articular cartilage similar to and...Ch. 5 - Prob. 4APCh. 5 - Discuss the relative importance of joint stability...Ch. 5 - What specific exercises would you recommend for...Ch. 5 - What specific exercises would you recommend for...Ch. 5 - Prob. 8APCh. 5 - Prob. 9APCh. 5 - What exercises would you recommend for senior...
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