Muscle: Length-Tension, SSC

What are the two main factors affecting skeletal muscle function?

The length-tension relationship and the stretch-shortening cycle (SSC).

What happens when skeletal muscles contract and change length?

They pull on tendons, causing bones to move (locomotion).

What is the length-tension relationship?

It's the concept that muscle force depends on its starting length, with an optimal length for generating maximum force.

What does the stretch-shortening cycle (SSC) describe?

A muscle generates more force if it's actively stretched before it contracts.

What is an example of the stretch-shortening cycle in action?

Bouncing before jumping helps you jump higher.

What is an eccentric muscle action?

When a muscle lengthens while under tension (e.g., lowering a weight).

What is a concentric muscle action?

When a muscle shortens while producing force (e.g., lifting a weight).

What triggers the stretch-shortening cycle (SSC)?

An eccentric action immediately followed by a concentric action.

In what types of movements is the SSC commonly used?

Running, jumping, or throwing.

What benefit does the SSC provide to muscles?

It helps muscles generate more force and improve performance.