A plank position is part of a yoga/Pilates workout. The person supports the body on the floor in a prone position with the arms and feet supporting the body. It is little similar to the "up" position of a push-up, held for 30 to 60 seconds. Contraction of the abdominal muscles in a plank is most likely
A. isometric.
B. isotonic.
C. concentric.
D. eccentric.
Answer: A
Anatomy & Physiology
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