Question

What motion (position) pattern is occurring at the ankle when moving from sitting to standing? What muscle is activating?

a) Closed Chain Dorsiflexion to Plantar Flexion, Gastrocnemius & Soleus, Concentric
b) Closed Chain Plantar Flexion to Dorsiflexion, Gastrocnemius & Soleus, Eccentric
c) None of the above, this activity is Open Chain.

Answer 1

When moving from sitting to standing, the ankle goes through Closed Chain Dorsiflexion to Plantar Flexion. The muscles activating during this motion are the Gastrocnemius and Soleus.

Step-by-step explanation:

When moving from sitting to standing, the motion pattern occurring at the ankle is Closed Chain Dorsiflexion to Plantar Flexion. This means that the ankle starts in a dorsiflexed position (toes lifted towards the anterior leg) and then goes into a plantar flexed position (toes pointed downward). The muscles activating during this motion are the Gastrocnemius and Soleus. They contract concentrically to generate force and control the movement.