Question

When skeletal muscles are trained by adding physical stress to them, this is called _____.

Answer 1

Answer:

When skeletal muscles are trained by adding physical stress to them, this is called progressive resistance training (PRT).

Explanation:

During PRT, muscles are exercised against an overload or resistance; the overload is gradually increased in order to allow muscles to adapt. This allows for progressive strength increases over time.

Muscle fatigue is defined as a reduction in the ability to produce force due to exercise. This comprises:

• peripheral fatigue- due to changes at the junction between motor neurons and the muscle.
• central fatigue- caused by a reduced capacity to use voluntary force in relation to the capacity to use involuntary force
• and muscle damage- this is associated with several issues at the cellular level such as disrupted membranes and cytoskeletons; and tissue damage via torn muscle fibers, and collagen.

Overall, these may affect muscle fiber activation and the amount of force they are capable of producing- i.e. sustained strength. However, muscle fatigue  can be greatly reduced via the maintenance of PRT. Also, apart from strength gains, PRT is used for weight loss and muscle building; common tools used in PRT include free weights, elastic bands and exercise machines.

Answer 2

Answer:

PRT

Explanation: