BASIC BIOMECHANICS
8th Edition
ISBN: 9781259913877
Author: Hall
Publisher: RENT MCG
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Textbook Question
Chapter 8, Problem 2IP
INTRODUCTORY PROBLEMS
2. Construct a chart listing all muscles crossing the knee joint according to whether they are anterior, posterior, medial, or lateral to the joint center. Note that some muscles may fall into more than one category. Identify the action or actions performed by the muscles listed in the four categories.
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Antagonistic pair
I want to analyse the role of the player who is about to take the shot.Considering his elbow joint:
1) What are the agonist, antagonist and synergist muscles and what type of movement are they doing (flexion, extension ecc..)?
2) How do they contract, eccentrically or concentrically? I think the synergists contract isometrically right?
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The three main forces that act on the patella are shown on
the diagram of the knee joint below. These forces are the
quadriceps muscle force (FQ), the patella ligament force
(FPL), and the patellofemoral joint reaction force (FPF). The
angles a and ẞ are with respect to a line that is
perpendicular to FPF. Assuming a = 15°, ẞ = 20°, and FQ =
3725 N, use equations for static equilibrium to calculate (a)
FPL, and (b) FPF. (Hint: To solve this problem consider using
a coordinate system that is aligned with the principal axes
of the patella instead of the usual vertical and horizontal
axes). (c) Many people assume FQ and FPL are always equal
in magnitude but this is only true under certain
circumstances. Under what conditions are FQ and FPL equal
in magnitude?
Fo
FPF
FP B
GriffithUNIVERSITY
Queensland Australia
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Chapter 8 Solutions
BASIC BIOMECHANICS
Ch. 8 - INTRODUCTORY PROBLEMS 1. Construct a chart listing...Ch. 8 - INTRODUCTORY PROBLEMS 2. Construct a chart listing...Ch. 8 - INTRODUCTORY PROBLEMS 3. Construct a chart listing...Ch. 8 - INTRODUCTORY PROBLEMS 4. Compare the structure of...Ch. 8 - INTRODUCTORY PROBLEMS 5. Compare the structure of...Ch. 8 - INTRODUCTORY PROBLEMS 6. Describe sequentially the...Ch. 8 - INTRODUCTORY PROBLEMS 7. Describe sequentially the...Ch. 8 - INTRODUCTORY PROBLEMS 8. Describe sequentially the...Ch. 8 - 9. Use the diagram in Sample Problem 8.1 as a...Ch. 8 - Prob. 10IP
Ch. 8 - ADDITIONAL PROBLEMS 1. Explain the roles of...Ch. 8 - ADDITIONAL PROBLEMS 2. Explain the sequencing of...Ch. 8 - Prob. 3APCh. 8 - ADDITIONAL PROBLEMS 4. Which muscles of the lower...Ch. 8 - ADDITIONAL PROBLEMS 5. The squat exercise with a...Ch. 8 - ADDITIONAL PROBLEMS 6. Explain why compression at...Ch. 8 - Prob. 7APCh. 8 - ADDITIONAL PROBLEMS 8. Explain why lifting a heavy...Ch. 8 - ADDITIONAL PROBLEMS 9. Explain how excessive...Ch. 8 - Prob. 10AP
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