BASIC BIOMECHANICS
8th Edition
ISBN: 9781259913877
Author: Hall
Publisher: RENT MCG
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Chapter 8, Problem 6AP
ADDITIONAL PROBLEMS
6. Explain why compression at the hip is higher than compression at the knee despite the fact that the knee supports more body weight during stance than does the hip.
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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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- TRUE OR FALSE 1. The longer the time tension is exerted, the greater the muscular endurance. * 2. The greatest amount of torque is produced by maximum tension in a muscle that is oriented at a 90° angle to the bone, and anatomically attached as far from the joint center as possible. * 3.The greater the torque a muscle can produce, the greater the movement it will produce on the body’s levers. * 4. When the fibers of a pennate muscle shorten, they rotate about their tendon attachment or attachments, progressively decreasing the angle of pennation. * 5.The fast-twitch fibers have smaller diameter than the slow-twitch fibers. * 6.At maximum velocity, no cross-bridges can form, so no force is generated, resulting in the production of zero power. * 7.The smaller number of cross-bridges results in a larger amount of force. *…arrow_forwardMadison 1. Madison is 5 feet 6 inches and weighs 115 lbs. She recently started going to 60 minute spin classes 4 days per week. She also Lifts 3 days per week (PAL 1.55). a.Calculate Madison’s TDEE (maintenance calories) 2. Now, Madison wants to put on muscle (3500kcal extra to put on 1lb of muscle). She wants to shoot to put on 1 lb per week. a.Calculate how many calories Madison needs to eat gain 1lb of muscle in 1 week.arrow_forwardGIVE 3 EXERCISE THAT CAN BE CONSIDERED AS A LOCOMOTOR MOVEMENT WITH FLEXION AND EXTENSION MOVEMENT AND WHYarrow_forward
- 5 of 10 Which of the following exercises would be an example of a Stabilization-Focused exercise for the shoulders? Standing cable row Bench press Single-leg dumbell overhead press shoulder press machine Next ▶arrow_forwardCompare your results for the 3 conditions (see figure 1 above): Extend hand with no weight Extend hand with weight Flex hand with weightarrow_forward< 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 Australiaarrow_forward
- Exercise 1 Activity 1. Let's check! Direction. Describe the following terms: 1. Burpee- 2. Push-up- 3. Squat- 4. Leg-raise- 5. Single-Leg Hip Raisearrow_forward2. a) Label the system provided below, including the reference frame, moment arms and vector forces with the information provided. Internal moment arm = 4cm +0.04m External moment arm relative to the segment weight = 25cm 0.25m External moment arm relative to the load weight = 45cm 40.45m Segment weight = 50 N Load weight = 100 N Lower leg segment angle relative to horizontal plane = 45° Quadriceps tendon angle = 45° Axis of rotation MF SW LW 2b) Using the figure in 2a., calculate the external torque of the system relative to the normal component of segment and load weights listed above. 2c) Calculate the amount of both the tangential component of the muscle force and the muscle force itself required to keep this system in a state of static equilibrium.arrow_forwardExercise 2: Axial and Appendicular Skeleton The following diagram of the human skeleton has 3 bones colored in (orange) and labeled A-C. Match the following bones with whether they are part of the axial or appendicular skeleton. A B C A Axial B Axial Appendiculararrow_forward
- With the shoulder flexed at 30°, the moment arm of the deltoid muscle is 2.0 cm. Solve for the force exerted by the deltoid muscle at the glenohumeral joint give the following assumptions: The deltoid is the only active muscle at the glenohumeral joint The weight of the humerus is 48 N. The center of gravity of the humerus is located 30 cm from the shoulder center of rotation STATIC EQUILIBRIUM EQUATIONS CONSIDERING ONLY THE DELTOID MUSCLE Fo MA = 18 Cn COR B=55". 0-30° RaF 30 cm FG = 24 Narrow_forward5 Describe the difference in maximal force capacity in the knee extensors vs the knee flexors. What role does bi-articulation at this joint play? How does this influence potential injury mechanics?arrow_forwardBefore testing a true 1-RM exercise, why should you allow your client to complete 3 trial repetitions first? Select 2 correct answer(s) To reduce risk of injury To ensure form is correct To fatigue the muscles to a "normal" functional strength To focus on the eccentric and concentric portions of the movementarrow_forward
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