TI- Quizzes 3/4

One disadvantage to open-chain exercises is that is...

• Often isolated to a single-joint motion.

• increases acceleration forces

• increases joint compressive forces

• Requires co-activation and co-contraction

• decreases shear forces.

Which closed chain exercise will provide the best exercise to decrease strain on the low back.

• leg press

• front squat

• Zecher squat

• back squat

• overhead squat

PNF is an approach to therapeutic exercise based on the principles of:

• functional anatomy & neurophysiology

• structural anatomy & neurophysiology

• functional anatomy & muscular physiology

• structural anatomy & muscular physiology

• structural anatomy & neurobiology

Facilitation results in _________ excitability.

• increased

• decreased

• equal

• enhanced

• amplified

Inhibition results in decreased

• excitability

• extensibility

• elasticity

• eccentric capability

• electromagnetism

A goal of plyometrics is to decrease the amount of time between eccentric _______ and concentric _______ force producing contraction.

• loading; force

• force; loading

• loading; power

• power; loading

• loading; speed

When a stretch is applied it created potential energy stored and then released when the muscle is returned to its original length. This is known as the conversion of elastic _______ to ________ output.

• energy; power

• energy; force

• speed; energy

• power; energy

• energy; speed

What type of stretching do fast twitch fibers respond to?

• high speed fast amplitude

• low speed low amplitude

• high speed small amplitude

• low speed fast amplitude

• low speed small amplitude

Plyometrics improves

• neuromuscular efficiency

• eccentric power

• delayed onset muscle soreness

• concentric strength

• progressive resistive exercise selection

One of the guidelines for plyometric programs includes:

• non-sport specific

• increased reps, increased gains

• quantity over quality

• decrease reps, increased gains

• quality over quantity