Question

which type of muscle contraction is shown in this picture?
eccentric
concentric
isometric

Explanation:

Eccentric muscle contraction occurs when the muscle lengthens while under tension. In the case of lowering a weight (as suggested by the "downward" motion in the image), the muscle (e.g., bicep) is controlling the descent of the load, which is characteristic of eccentric contraction. Concentric is when muscle shortens (like lifting a weight), and isometric is when muscle tension occurs without length change.

Answer:

Eccentric