R/E II MM Fx and adaptation

Question 1

How does mm architexture (fiber type/arrangement) affect force?

Answer 1

Short, pinnate/multi-pinnate muscles produce high force. ie quads, gastrocs, delts, biceps

Question 2

How does fiber type distribution (types I, IIA, and IIB) affect force?

Answer 2

Type I= low force Type high resist to fatigue

Type IIA and IIB= Rapid high force production and low resistance to fatigue

Question 3

Type I mm fibers are?

Answer 3

Tonic, slow-twitch

Question 4

Type IIA & IIB are?

Answer 4

Phasic, fast-twitch

Question 5

Types of contractions force output > to <

Answer 5

Eccentric, isometric, concentric

Question 6

Types of contractions speed effects tension?
Concentric
Eccentric

Answer 6

Concentric > speed=< in tensio

Eccentric > speed=> in tensio