overaction

Noun

uncountable usually

Excessive action (as of a muscle of the body).

Japanese Meaning

筋肉などの組織が示す過剰な収縮や作用

The physiotherapist determined that the patient's neck stiffness was due to overaction of the neck muscles.

理学療法士は、患者の首のこわばりが首の筋肉の過活動によるものだと判断しました。

Sense（1）

Excessive action (as of a muscle of the body).

overactions

（ plural ）