Question

yolanda is focusing on eccentric contractions during her workout today. how is this most likely demonstrated in her workout?
a. she is completing several bicep curls.
b. she is working to lengthen her muscles.
c. she is holding her body in a fixed position for a long time.
d. she is keeping her heart rate at a vigorous intensity level.

Explanation:

To solve this, we analyze each option based on the definition of eccentric contractions (muscle lengthening while under tension).

• Option A: Bicep curls involve concentric (shortening) and maybe isometric, not eccentric (lengthening) as primary.
• Option B: Eccentric contractions occur when a muscle lengthens while contracting (e.g., lowering a weight slowly, muscle lengthens). So this matches.
• Option C: Holding a fixed position is isometric (no length change), not eccentric.
• Option D: Heart rate intensity relates to cardio, not muscle contraction type.

Answer:

B. She is working to lengthen her muscles.