A firm, steady pressure should be applied - avoid jerky movements.
Habitually swims, with jerky forward movement; sometimes dives.
Make irregular pulls, and the kite will respond with similar jerky movements.
On no account should they be pushed straight up or in a jerky movement.
Sea water leaked from his mouth, his breath gasped in jerky spasms.
To compensate for this, they move their heads in a jerky fashion.
Collocations
COLLOCATIONS FROM OTHER ENTRIES►a jerky movement
(=with many starts and stops)· the jerky movements of a frightened horse
jerky movements are rough, with many starts and stopsOPP smooth: His skin was dry and hot, his breathing rapid and jerky. The bus came to a jerky halt.—jerkily adverb—jerkiness noun [uncountable]