BASIC BIOMECHANICS
8th Edition
ISBN: 9781259913877
Author: Hall
Publisher: RENT MCG
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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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I. INSTRUCTION: Compute for the following given problem.
1. Emily can lift 21 kg (210 newtons force) using muscles that have a cross-sectional
area of 6 cm2. Use this formula to work out how many newtons per square
centimetre her muscles can pull with:
Formula: Force/Area
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
GIVE 3 EXERCISE THAT CAN BE CONSIDERED AS A LOCOMOTOR MOVEMENT WITH FLEXION AND EXTENSION MOVEMENT (mixed, not separated)I NEED IT ASAP
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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- GIVE 3 EXERCISE THAT CAN BE CONSIDERED AS A LOCOMOTOR MOVEMENT WITH LATERAL ROTATION AND MEDIAL ROTATION MOVEMENT (mixed, not separated)arrow_forwardTRUE 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_forwardGIVE 3 EXERCISE THAT CAN BE CONSIDERED AS A NON - LOCOMOTOR MOVEMENT WITH LATERAL ROTATION AND MEDIAL ROTATION MOVEMENTarrow_forward
- 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.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
- *Practice problemarrow_forwardHuman Anatomy & Physiology I (BIO168) Sequence of Events for Muscle Contraction Practice Worksheet See if you can place the events that occur during muscle contraction and relaxation in their proper order. Insert numbers in the paces provided to order the events in the proper sequence. _____ A. An electrical impulse travels over the sarcolemma and inward along the T-tubules, causing sacs in the sarcoplasmic reticulum to release calcium. ____ B. The release of ACh stops and acetylcholinesterase breaks down any remaining ACh. _____ C. Troponin and tropomyosin prevent the myosin heads from grasping the thin filament, and the muscle fiber relaxes. _____ D. An electrical impulse causes small vesicles at the end of a motor neuron to release the neurotransmitter acetylcholine (ACh). _____ E. Calcium binds with the troponin on the actin filament, exposing attachment points. _____ F. ACh diffuses across the synaptic cleft, where it stimulates receptors in the…arrow_forwardProblem 67 Correctly label the muscles of the neck, back, and gluteal region.arrow_forward
- 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
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