Question

DOUBLE LEG BRIDGE WITH RESISTANCE (362):

1. What is the PRIMARY muscle (agonist) responsible for holding tension against the band?

2. What is the antagonist muscle group to the above muscle?

3. What PLANE does the above motion occur in?

4. What would happen to the Quadriceps if the heels were brought closer to the glutes?

5. Which is responsible for inhibiting too much tension in the muscle during this exercise: A. GTOs B. Muscle Spindles

Answer 1

1) Gluteus muscles is the primary muscle in double leg bridge resistance against the band and that provides extensor and stabilizer of hip.

2) The antagonist of gluteus maximus is iliopsoas muscle that act as direct opposite to the gluteal muscles by producing flexion.

3) The plane motion occurs in sagittal plane where the the hip extension takes place under coronal axis in the double leg bridge with resistance.

4) The quadriceps is stretched when the heels brought close to the glutes because there will be an eccentric contraction of the quadriceps. Usually the action of quadriceps is knee extension but towards gluteus the action of muscle is opposite knee flexion in full range makes to stretch.

5) The answer is A GTO (golgi tendon organ) is responsible for the inhibition of muscle tension when it is loaded beyond the power of the muscle and creates tension over muscle so, it's suitable answer.

The muscle spindle senses the change in the length of the muscle and inhibits the over stretch. So it's not suitable answer for inhibiting muscle tension.