You are the gym with a friend who complains that she cannot lift as much weight on a new machine as she could on the old machine. You examine the machine and note that the starting position for the exercise puts your friend's miscles in a stretched position. How does this explain her seeming loss of strength?

You are the gym with a friend who complains that she cannot lift as much weight on a new machine as she could on the old machine. You examine the machine and note that the starting position for the exercise puts your friend's miscles in a stretched position. How does this explain her seeming loss of strength?

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter6: The Muscular System

Section: Chapter Questions

Problem 1CT: You are training athletes for the 100-meter dash. They need muscles specialized for speed and...

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Similar questions

You are training athletes for the 100-meter dash. They need muscles specialized for speed and strength, not endurance. What muscle characteristics would your training regimen aim to develop? How would you alter it to train a long-distance swimmer?
In a general sense, how do skeletal muscles produce movement?
Why might multiple, small motor units be advantageous over a single large motor unit? A. They enable finer control over movements. B. Small motor units contract more rapidly than large motor units. C. Small motor units have greater capacity for strength improvement. D. The strength of contraction can be modulated more easily in small motor units. E. They enable a strong, flexing motion.
An isometric exercise is one in which the joint angle does not change during the application of muscle force. For instance, you can join your hands together, pushing down with one hand and pushing up with the other. In each arm, the muscles that provide the force are connected to the bones of the arm by tendons. If you increase the forces but keep the angles the same, the muscles will still contract. Explain how this is possible.
Distinguish between flexion and extension
Why is it advantageous to have a highly folded sarcolemma at the motor end plate?
Why can you lift a larger load when your elbow is slightly flexed and your biceps muscle is at an intermediate length than you can when your elbow is fully extended?
Give a part of the body that uses the 2nd class lever system and; Explain how does the type of the lever system employed by the muscle influence the force it can generate and the load it can overcome?
After a vigorous exercise, you may experience cramps in your leg muscles. Why does this happen?
Explain why you can maintain contraction of the hamstring muscles over time.