Strength lecture 5/6 Power Scientific

What type of ability is power?

Biomotor

What are the two aspects of mechanical power?

Torque/product of force and velocity

What is the rate of doing work?

Power

How do you calculate power in terms of torque?

(force x distance)/time or work/time

How do you calculate power in terms of force and velocity?

force x velocity or force x (distance/time)

When is muscle most efficient?

When it has optimal power outputs

What is optimal power output?

High power output over a short period of time

What is the most important contributor to power output and whole limb movement efficiency?

Intermuscular coordination

What is intermuscular coordination?

How different muscle groups work together to produce smooth and efficient movements

What increases from power training?

Muscle efficiency

What does intensity modify?

Volume

What is load synonymous with?

Volume

What is effort synonymous with?

Intensity

What is force in the context of calculating power?

The load

How is load modified?

Changing the percent of 1 RM

What is velocity in the context of calculating power?

how fast you move

What is typically neglected in power?

Velocity

What is power’s variable for work and rate?

Rep per second

What does this graph represent?

As force decreases, power increases

What is a muscular determinant that increases velocity?

An increase in fiber type training

What causes this force velocity curve to shift? And in what direction?

Increased muscle size, right

What does this force velocity power graph tell us?

An increase in muscle volume increases power/force output

A slight increase in force has a big impact on power

What are the positives of explosive ballistic training?

Increased rate of force development

What are the negatives of explosive ballistic training?

Faster force drop off

What are the negatives of heavy resistance training?

Slower rate of developement

What are positives of heavy resistance training?

More time until force fall off

As the rate of torque developement increases what decreases?

The recruitment threshold

What gets aided the most from a decrease in recruitment threshold?

High threshold motor units

What causes all motor units to be recruited?

Max effort contractions

Are all motor units recruited if there is a max effort contraction but with light weight?

Yes

What kind of relationship do force and velocity have?

Inverse

What occurs during heavy resistance training?

Small increase in velocity, large increase in force

What occurs during mixed resistance training?

Big increase in both force and velocity

What occurs during ballistic/explosive resistance training?

Big increase in velocity, small increase in force

What are some examples of functional applications of power training?

Sit to stand, walking speed, and carrying laundry basket

What is most important to functional outcomes of power training?

Mode of movement

When are cluster sets used?

Advanced strength programs

What are cluster sets?

Max effort and power for 1 rep, short rest, next rep