Chapter 17

Question 1

SEC

Answer 1

Series elastic component

acts as a spring

Question 2

stretch reflex

Answer 2

body’s involuntary response to an external stimulus that causes rapid stretching of the muscle, signal is sent to spinal cord, which responds in a concentric contraction of same overstretched muscle

ex: knee jerk in docs office

Question 3

potentiation

Answer 3

enhancement of the stretch

Question 4

deceleration stage

Answer 4

eccentric phase, preloads the agonist muscle groups.
SEC stores elastic energy and the muscle spindles are stimulated
ex: half squat of jump shot

Question 5

Amortization

Answer 5

transition phase between eccentric and concentric phases
most important, critical for power developent

delay where spinal cords transmits singals to the agonist (stretched) muscle group

but can’t last to long or it wastes away as heat

ex: when downward half of jump shot stops, amortization starts. When upward movement starts, amortization ends

Question 6

Concentric phase

Answer 6

response to events during eccentric and amortization phases