S2 Lab 1 - squat jump force-velocity-power

what determines muscular power

force x velocity

describe the force-velocity relationship

high force = low velocity, low force = high velocity

shape for multi-joint movements

approximately linear

shape of force velocity curve (single muscle)

hyperbolic

why assess force-velocity relationship

identify deficits and optimize training load

what loads are used in squat jump testing

0-80% body mass

what invalidates a squat jump

countermovement before jump

what is push-off distance

lower limb length - starting height

what contributes to work in a jump

potential energy gain (mass x height)

how is mean force calculated

F = mg(h/hpo +1)

how is velocity estimated

v = √(g × h / 2)

how is power calculated

Power = force × velocity

why plot force-velocity curve

to determine maximal theoretical force and velocity

what load typically maximised power

moderate load (balance of force and velocity)

what are the key warm-up steps before squat jump testing

5min light exercise +progressive jumps (50,75,90%)

correct starting position for squat jump

feet shoulder width, bar on trapezius, squat to standard depth

why hold squat position before jumping

to remove countermovement and isolate concentric action

how many jumps per condition

3

what loads are used

0, 20, 40, 60, 80% body mass

rest between attempts

1-2mins

what measurements are required

body mass, limb length, starting height, jump height

what are the physiological characteristics of an individual who is likely to produce high power output?

high amount of type II muscle fibres (anaerobic)

high motor unit recruitment

high relative strength

efficient SSC

high anaerobic capacity

what type of training would you perform for someone that wishes to increase the force or velocity-producing capacity of vertical jumping?

force: max strength training, plyometrics

Velocity: downhill sprinting, plyometrics,