movement analysis

Question 1

explain the elbow joint (bones and type of joint):

Answer 1

hinge joint containing ulna, radius and humerus

Question 2

agonist and antagonist for flexion at the shoulder

Answer 2

agonist = anterior deltoid
antagonist = latissimus dorsi

Question 3

agonist and antagonist for extension/hyper extension at the shoulder

Answer 3

agonist = latissimus Dorsi
antagonist = anterior deltoid

Question 4

agonist and antagonist for horizontal abduction at the shoulder

Answer 4

agonist = latissimus dorsi
antagonist = pectorals

Question 5

agonist at shoulder at downwards phase of press up

Answer 5

pectoralis major

Question 6

what is an eccentric muscle contraction, when does it occur?

Answer 6

one where the muscles lengthens when contracting. Occurs when gravity is involved e.g. downwards phase of squat, press up

Question 7

what is a concentric muscle contraction?

Answer 7

one where the muscles shorten when contracting

Question 8

agonist and antagonist for flexion at the elbow?

Answer 8

agonist = bicep
antagonist = tricep

Question 9

agonist and antagonist for plantar flexion at the ankle

Answer 9

agonist = gastrocnemius
antagonist = tibialis anterior

Question 10

agonist and antagonist for adduction at the hip

Answer 10

agonist = adductors (adductor longus/magnus/brevis)
antagonist= tensor fascia latae and gluteus medias/minimus

Question 11

what is a first class lever/ what is the mechanical advantage and disadvantage/

Answer 11

fulcrum in the middle -> extension at the elbow
mechanical advantage= can move loads quickly with a high range of. movement
mechanical disadvantage= cannot lift heavy loads

Question 12

what is a second class lever/ what is the mechanical advantage and disadvantage?

Answer 12

resistance in the middle
-> plantar flexion/ dorsiflexion at the ankle
mechanical advantage = can lift heavy loads with little effort
mechanical disadvantage = slow with limited range of movement