downward dog

Question 1

What’s happening at joints

Answer 1

Knee: flexed, extends
hip: flexed
shoulder: flexed
trunk: extending, flexing
wrist + ankle are isometrically extended

downdog: shoulder + knee muscles lengthen eccentrically, hip flexors shorten concentrically

Question 2

Peak flexion of hip

Answer 2

estimate: 105 degrees
kinovea: mid axillary line, greater trochanter, lateral epicondyle of femur

Question 3

Prime movers

Answer 3

hamstrings flexing knee
rectus femoris extending knee + flexing hip in upwards phase
iliacus + psoas major flexing hip

deltoid + pectoralis major flexing shoulder

erector spinae extending trunk
rectus abdominis flexing trunk a little

gastrocnemius flexing knee + plantarflexing foot

Question 4

form

Answer 4

sternocleidomastoid flexing head
spenius capitis + erector spinae extending neck

rotator cuffs stabilising shoulder joint
Serratus anterior protracting shoulder

abdominals
multifidus stabilising spine

FDL, FHL, tibialis posterior, soleus, gastrocnemius plantarflexing foot

Question 5

deltoid

Answer 5

origin: lateral 1/3 clavicle, acromion, spine of scapula
insertion: deltoid tuberosity of humerus

range: mid > inner > mid

Flexes + medially rotates arm at shoulder as arm moves from 90 degree flexion to more flexion