Basic Biomechanics
7th Edition
ISBN: 9780073522760
Author: Susan J Hall
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 9, Problem 7IP
INTRODUCTORY PROBLEMS
Weight training is used in conjunction with conditioning for numerous sports. What would you advise regarding spinal posture during weight training?
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Students have asked these similar questions
Before 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 movement
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. *…
2. We discussed how muscle spindles allow for precision of movement as a muscle lengthens, and
particular muscles which require more precise movements will contain more spindles.
In addition to this precision control over muscle length, there are other differences between
muscles which enable more precision in how much force is generated. Consider the two graphs
below which depict force generated by two different muscles as additional motor units are
recruited.
Force
Muscle A
Load
Force
Muscle B
Load
a) Describe why the first steps for a low force contraction in both muscles are smaller than the
later ones in the context of motor units and force production.
Chapter 9 Solutions
Basic Biomechanics
Ch. 9 - INTRODUCTORY PROBLEMS 1. What regions of the spine...Ch. 9 - INTRODUCTORY PROBLEMS 2. Construct a chart listing...Ch. 9 - INTRODUCTORY PROBLEMS Construct a chart listing...Ch. 9 - INTRODUCTORY PROBLEMS Construct a chart listing...Ch. 9 - INTRODUCTORY PROBLEMS How would trunk movement...Ch. 9 - INTRODUCTORY PROBLEMS What are the postural...Ch. 9 - INTRODUCTORY PROBLEMS Weight training is used in...Ch. 9 - INTRODUCTORY PROBLEMS What exercises strengthen...Ch. 9 - Prob. 9IPCh. 9 - Solve Sample Problem 9.1 using the following data:...
Ch. 9 - Prob. 1APCh. 9 - ADDITIONAL PROBLEMS 2. What exercises should be...Ch. 9 - ADDITIONAL PROBLEMS 3. Compare and contrast the...Ch. 9 - Prob. 4APCh. 9 - Prob. 5APCh. 9 - ADDITIONAL PROBLEMS 6. Formulate a theory...Ch. 9 - Prob. 7APCh. 9 - Prob. 8APCh. 9 - ADDITIONAL PROBLEMS 9. What spinal exercises are...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, bioengineering and related others by exploring similar questions and additional content below.Similar questions
- Problem 52 Correctly label the following movements.arrow_forwardGIVE 3 EXERCISES THAT CAN BE CONSIDERED AS A LOCOMOTOR MOVEMENT WITH LATERAL ROTATION AND MEDIAL ROTATION MOVEMENT AND WHY?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
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- All exercises below are examples of closed kinetic chain exercises except... Push up Overhead press Squat Bridgearrow_forwardWhat are the benefits when performing movement based exercises and how does your body react?arrow_forwardAntagonistic 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?arrow_forward
- demonstrate an understanding of human growth and motor development and apply it to the design of age-appropriate movement activities and to the enhancement of movement skills. Explain more in depth especially for apply it to the design of age-appropriate movement activities and to the enhancement of movement skills. Do not apply the 7 principles of biomechanics.arrow_forwardII. Real life problem. You are a trainer and are called on to the field where a player is down with a severe cramp of his right hamstring (biceps femoris) muscle. You know that cramps are caused by over-active motor nerve activity to the muscle. Your associates want to stretch the cramping hamstring, but you say, “No! I want the player to concentrate on contracting his right quadriceps muscles before we stretch.” Why might stretching a cramping muscle INCREASE the cramping?arrow_forwardVII. Real life problem. You are a trainer and are called on to the field where a player is down with a severe cramp of his right hamstring (biceps femoris) muscle. You know that cramps are caused by over-active motor nerve activity to the muscle. Your associates want to stretch the cramping hamstring, but you say, “No! I want the player to concentrate on contracting his right quadriceps muscles before we stretch.” 2. Why would contracting the opposing muscle rapidly improve the situation?arrow_forward
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