When does an isotonic concentric contraction occur?

When a muscle generates a force greater than the load attached to the muscle's end. After the muscle tension exceeds the weight of load, an isotonic concentric contraction can begin

What happens when the latent period gets longer?

The weight of the load gets larger

What happens to the muscle when load is increased?

If the load is increased, the muscle must generate more force to move it and & the latent period will therefore get longer b/c it will take more time ton

Explain why the latent period becomes longer as the load increases

Cross bridges cycle and when the muscle tension exceeds the load, muscle shortening happens. The latent period increases as the weight of the load gets heavier, this is for the necessary force to be generated by the muscle.

When does the latent period occur?

The latent period occurs when there is a rise in muscle tension but no movement or contraction of the muscle.

Explain why the shortening load becomes slower as the load becomes heavier.

When the weight is heavy, the speed in which the muscle lifts the weight decreases in speed at a slower velocity.

What does the shortening-velocity refer to?

The shortening velocity refers to the speed of the contraction from the muscle shortening while lifting a load.

How does the shortening distance change as the load becomes heavier?

The shortening distance decreases as load becomes heavier

Explain why it would take you longer to perform 10 repetitions lifting a 10kg weight than it would to perform the same number of repetitions with a 5kg weight

because as the weight of the load increases, so does the latent period time and the shortening velocity speeds. With the lighter weight, the muscle is contracted quicker in both latent and shortening velocity speeds.

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What happens during isotonic contractions?

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Describe an isotonic concentric contraction

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PhysioEx2Activity7

Isotonic contractions & the load-velocity relationship

Question	Answer
What happens during isotonic contractions?	The skeletal muscle length changes & thus the load moves a measurable distance
Describe an isotonic concentric contraction	The muscle length shortens as the load moves
When does an isotonic concentric contraction occur?	When a muscle generates a force greater than the load attached to the muscle's end. After the muscle tension exceeds the weight of load, an isotonic concentric contraction can begin
What happens when the latent period gets longer?	The weight of the load gets larger
What happens to the muscle when load is increased?	If the load is increased, the muscle must generate more force to move it and & the latent period will therefore get longer b/c it will take more time ton
Explain why the latent period becomes longer as the load increases	Cross bridges cycle and when the muscle tension exceeds the load, muscle shortening happens. The latent period increases as the weight of the load gets heavier, this is for the necessary force to be generated by the muscle.
When does the latent period occur?	The latent period occurs when there is a rise in muscle tension but no movement or contraction of the muscle.
Explain why the shortening load becomes slower as the load becomes heavier.	When the weight is heavy, the speed in which the muscle lifts the weight decreases in speed at a slower velocity.
What does the shortening-velocity refer to?	The shortening velocity refers to the speed of the contraction from the muscle shortening while lifting a load.
How does the shortening distance change as the load becomes heavier?	The shortening distance decreases as load becomes heavier
Explain why it would take you longer to perform 10 repetitions lifting a 10kg weight than it would to perform the same number of repetitions with a 5kg weight	because as the weight of the load increases, so does the latent period time and the shortening velocity speeds. With the lighter weight, the muscle is contracted quicker in both latent and shortening velocity speeds.

Created by: meunid

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