Câu 100: 010-111: ACSM Certified Personal Trainer

Which of the following describes a Valsalva maneuver performed during a free weight biceps curl?

1. A. a normal part of the concentric phase of the exercise.
2. B. inspiration of air through an open glottis.
3. C. a normal part of the eccentric phase of the exercise.
4. D. expiration of air against a closed glottis. — đáp án hiện tại