deadlift

Question 1

whats happening at joints

Answer 1

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

downwards: eccentric
upwards: concentric
ankle: isometric

Question 2

peak flexion of knee

Answer 2

estimate: 130 degrees
kinovea: greater trochanter, lateral condyle of femur, lateral malleolus of fibula

Question 3

prime movers

Answer 3

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

gluteus maximus extends hip in upwards phase
hamstrings flex knee, extend hip when leg is straight

gastrocnemius + soleus plantarflexes foot
tibialis anterior dorsiflexes

Question 4

form

Answer 4

Splenus capitis, Erector Spinae extending neck

Gluteus Medius, Gluteus Minimus keep pelvis level

Pectoralis Major, Deltoid, Biceps Brachii, Coracobrachialis flexing shoulder

Biceps Brachii, Brachialis, Brachioradialis, Pronator Teres flexing elbow

ECU adducting wrist

FDS + P, FPL flexing fingers + thumb

abdominals stabilising core

extensors stabilise while flexors work concentrically

Question 5

muscle groups

Answer 5

trunk extension: multifidus, quadratus lumborum, erector spinae

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

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

Question 6

biceps femoris

Answer 6

origin: ischial tuberosity
insertion: head of fibula

range: inner > outer

flexes leg at knee during downwards phase, extends thigh at hip in upwards phase