Yes, it is a secondary muscle (synergist/stabilizer) used in the squat.
There is a link below in which you can get a chart of the muscles used in a squat:
go down about halfway and you'll see the chart.
gluteus maximus, quadriceps, hamstrings, spinal erectors, and gastrocnemius
Stabilizers Worked When Performing a squat are ... the hamstrings and gastrocnemius
Gastrocnemius and Soleus with leg straight, to isolate gastrocnemius bend knee.
Gastrocnemius
quadriceps,hamstigs, gastrocnemius
No, a squat thrust is not used to measure a person's agility. The side step is used to measure their agility.
The gastrocnemius, soleus and peroneus longus muscles insert at the heel (calcaneus) by way of the Achilles (calcaneal) tendon.
Gastrocnemius
Body weight squat, goblet squat, zombie squat, front squat, and back squat
true
type of contraction of gastrocnemius muscle?
When you do squat exercises you are toning and strengthening the muscles of the thighs, calves and buttocks. These muscles are the gluteals (maximum, minimus and medius), the quadriceps ( rectus femoris, vastus lateralis, vastus medialis, and vastus intermedius), the hamstrings (semitendinosus, semimembranosus, biceps femoris) and the calf muscles (gastrocnemius and soles). The gluteal muscles receive the most benefit.