lunge

Question 1

whats happening at joints?

Answer 1

hip: flexes, extends
knee: flexes, extends
ankle: dorsiflexes, plantarflexes

upwards: concentric
downwards: eccentric
ankle: isometric

Question 2

peak flexion of knee

Answer 2

estimate: 110 degrees
kinovea: greater trochanter, lateral condyle of femur, lateral malleolus of fibula

Question 3

prime movers

Answer 3

rectus femoris straightens knee in upwards phase, flexes the hip on downwards phase

gluteus maximus extends hip in upwards phase
hamstrings extends hip, flex knee

gastrocnemius plantarflexes foot and flexes knee

tibialis anterior dorsiflexes + inverts foot

Question 4

muscle groups

Answer 4

hip flexion: Psoas Major, Iliacus, Rectus Femoris, Sartorius, Pectineus
hip extension: Gluteus Maximus, Hamstrings

knee flexion: Hamstrings, Gastrocnemius, Gracilis, Sartorius
knee extension: Quads, Tensor FL

ankle dorsiflexion: tibialis anterior, EHL, EDL, fibularis tertius
ankle plantarflexion: Gastrocnemius, Soleus, Plantaris, Fibularis Longus, Tibialis Posterior, FDL, FHL
slight inversion: Tibialis Anterior + posterior

toe extensors: EHL, EDL + B, lumbricals, interossei

Question 5

stabilisers

Answer 5

sternocleidomastoid keeping head erect

abdominals stabilising core

Gluteus Medius, Gluteus Minimus abducts + keep pelvis level while stepping out
adductors as hip adducts to step in

Pectoralis Major, Deltoid, Biceps Brachii, Coracobrachialis flexing shoulder

Biceps Brachii, Brachialis, Brachioradialis, Pronator Teres flexing elbow
arms turned inwards meaning shoulders are medially rotated by pec major, lat D, deltoid

FDS + P flexing fingers

hip, knee, ankle extensors keeping pelvis level while joints flexes

Question 6

gluteus maximus

Answer 6

origin: posterior gluteal line, sacrum, coccyx
insertion: iliotibial tract of tibia, gluteal tuberosity

range: outer > inner

extends + adducts thigh at hip in upwards phase as thigh and leg step back