Kinetic tremor

Japanese: 運動時振戦 - うんどうじしんせん

…The former is often seen in Parkinson's syndrome, and is a coarse tremor usually around 5 Hz, often occurring in the fingers, and described as a pill-rolling movement. The latter is further divided into positional tremor and kinetic tremor. Positional tremor is seen when the limbs are held in a fixed position and skeletal muscles are contracted isometrically. …

From [Trembling]

…Some have the same frequency as (1), but often have faster, finer vibrations (around 10 times per second). (3) Kinetic tremor: This type of tremor occurs with voluntary movement. Tremors associated with cerebellar disease, some tremors after head trauma, and tremors that appear after cerebrovascular disorders are often of this type. It is a coarse tremor (3 to 5 times per second) that involves the trunk muscles. …

*Some of the terms mentioned in the explanation of "kinetic tremor" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…前者はパーキンソン症候群でよく認められ，通常5Hz前後の粗大な振戦で，手指に生じることが多く，丸薬まるめ運動などと形容される。後者はさらに体位振戦と運動時振戦に分けられる。体位振戦は，体肢を一定の位置に保ち骨格筋の等尺性収縮を行う際にみられる。…