HMS, BM EQ-Bank 831 MC

Which of the following best demonstrates an isometric contraction?

Holding a plank position for 30 seconds
Lowering into a push-up
Lifting a weight during a bicep curl
Running on a treadmill

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\(A\)

Show Worked Solution

A is correct: During a plank hold, core muscles maintain constant tension without changing length.

Other Options:

B is incorrect: Eccentric contractions during lowering
C is incorrect: Concentric contractions during lifting
D is incorrect: Alternating contractions during running