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Klavier Posted 19 years ago
Grammar

sentence: in open chain activity

Hello.
What does it mean the bold phrase? The book is talking about the iliopsoas muscle:

In open chain activity, it flexes, externally rotates and abducts the leg.

Also, can you explain more exactly what does this sentence mean? It's from the same context:

Acting unilaterally, it assists in side bending the trunk on the same side.
  

Top answer

"open chain activity" - appears to mean that one end of the limb is unconstrained. side bending the trunk on the same side. = this muscle is one of those used to pull the trunk over to one side.

  • "open chain activity" - appears to mean that one end of the limb is unconstrained.
  • side bending the trunk on the same side.
  • = this muscle is one of those used to pull the trunk over to one side.
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1 Answers
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"open chain activity" - appears to mean that one end of the limb is unconstrained.

side bending the trunk on the same side. = this muscle is one of those used to pull the trunk over to one side.

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