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If the dumbbell during a bicep curl is held at 90 degrees of elbow flexion, the elbow flexors are: O contracting concentricly contracting eccentricly

If the dumbbell during a bicep curl is held at 90 degrees of elbow flexion, the elbow flexors are: O contracting concentricly contracting eccentricly O contracting isokineticly O contracting isometricly

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