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Active and Passive
| Question | Answer |
|---|---|
| What exactly is active insufficiency? | the weakening of a biarticular muscle by placing it in a shortened position |
| What is passive insufficiency? | Tells us how to maximize a stretch for a muscle |
| Give 1 examples of active insufficiency as it relates to the lower extremity H/G | Hamstrings and glutes. Since Hamstrings and glutes have the same action which is hip extension, if you shorten the hamstrings by flexing the knee, more of the burden is put on the glutes, thus working it out more. |
| Give 1 examples of active insufficiency as it relates to the lower extremity G/S | Since the gastrocnemius is a powerful knee flexor, but also can perform plantar flexion of the ankle, the soleus does not have as much work to do when doing calf raises. So, you flex the knee while doing them, in order to focus on soleus |
| Give 1 example of passive insufficiency as it relates to the lower extremity RF | The rectus femoris is a good example of passive insufficiency in the lower extremity. since it crosses both the hip and knee joint, it is able to be passively insufficient. You should do hip extension and knee flexion for it. (Reverse of its actions) |
| Give 1 example of passive insufficiency as it relates to the upper extremity | Biceps brachii, shoulder flexion, elbow flexion, supination. Shoulder extension, elbow extension and pronate |
| Why is knee extension measured in a supine position? | To eliminate the passive insufficiency of the hamstring |
Created by:
ptastudysets