LECTURE 2

Question 1

what is the term that there’s a signal of pain coming from the joint?

Answer 1

arthrogenic inhibitor which leads to disuse, disuse atrophy and overcompensation

Question 2

sports injuries can be acute or chronic?

Answer 2

both, ask:

have you sprained this before

treatments

did you finish the tx

log of progression

Question 3

resting length based on?

Answer 3

maximizes the ability of muscle to contract when stimulated

length tension relationship

resting length

Question 4

a. RL allows greatest # of cross bridge and greatest potential of active force
b. Inverted U – peak at resting length

Answer 4

Active Tension

Question 5

a. Developed series and parallel elastic component
stretched

b. Tissue is slack before stretch and tension builds as
exponential function

Answer 5

Passive Stretch

Question 6

a. active traction dominates force generation

Answer 6

at shortened lengths

Question 7

a. passive tension begins to contribute and active tension compromised

Answer 7

Beyond resting length

Question 8

passive tension accounts for most of total force

Answer 8

more elongated lengths

Question 9

two types of muscle injury?

Answer 9

muscle regeneration

muscle degeneration

Question 10

principles of force velocity and length velocity?

Answer 10

muscle force is proportional to physiological cross sectional area

muscle speed is proportional to fiber length

biceps have greater absolute working range compared to VLO

VLO produces more force compared to biceps

Question 11

force velocity relationship is based on what principles?

Answer 11

concentric

eccentric