BASIC BIOMECHANICS
8th Edition
ISBN: 9781259913877
Author: Hall
Publisher: RENT MCG
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Chapter 8, Problem 2AP
ADDITIONAL PROBLEMS
2. Explain the sequencing of joint actions in the ankle and foot during the support phase of gait.
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Calculate the ankle torque during initial gait contact from the following data set to 1 decimal place. NOTE if your answer is negative put the
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Ankle z 0.074 m
Ankle x 0.62 m
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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
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Describe the difference in maximal force
capacity in the knee extensors vs the knee
flexors. What role does bi-articulation at this
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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_forwarddemonstrate an understanding of the phases of movement and of physical laws and biomechanical principles related to improving movement; Explain more in - depth For the phases of movement pick from the following movements: 1. Preliminary movements: 2. Back-swing or recovery movements: 3. Force-producing movements 4. Critical instant movement 5. Follow-through movement:arrow_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
- GIVE 3 EXERCISES THAT CAN BE CONSIDERED AS A LOCOMOTOR MOVEMENT WITH ABDUCTION AND ADDUCTION MOVEMENT. WHY?arrow_forwardTotal compressive knee forces range between O 1-2 %BW O 2-4 %BW 3-5 %BW 0.5-1.5 %BWarrow_forwardName 4 exercises that include VARIOUS DIRECTIONAL LOCOMOTOR & BALLISTIC MOVEMENTS, 3 PLANES OF MOVEMENTS.arrow_forward
- 30³ V F2 ● 3 E CALF RAISES 80 F3 Bones Muscles Joint type(s) Movement(s) Name an activity you could do in daily life that uses the same movement as calf raises: MEDICINE BALL OVER/UNDER Bones Muscles Joint type(s) Movement(s) Name an activity you could do in daily life that uses the same movement as over and under: STRETCH BAND LATERAL RAISES 6,884 Bones Muscles Joint type(s) Movement(s) Name an activity you could do in daily life that uses the same movement as lateral raise: DUMBBELL FRONT SQUAT DEC 6 $ 4 a D F4 A % 5 G F5 W 0 F6 MacBook Air * 6 188880BA 7 F7 3 F8 P ( 9 F9arrow_forwardGIVE 3 EXERCISE THAT CAN BE CONSIDERED AS A LOCOMOTOR MOVEMENT WITH FLEXION AND EXTENSION MOVEMENT AND WHYarrow_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_forward
- Exercise 1 Activity 1. Let's check! Direction: Identify the exercise category of the following: 1. Side Lying Inner Thigh 2. Superman 3. Cobra _4. Curtsy Lunge 5. Calf raisesarrow_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_forwardExercise 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_forward
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