noun
high knees; high knee exercise
An exercise drill where one lifts the knees high while walking or running in place; often used in warm-ups and athletic training.
準備運動で腿上げを30回やった。
I did 30 high knees as a warm-up exercise.
腿上げは太ももの筋肉を鍛えるのに効果的だ。
High knees are effective for strengthening the thigh muscles.
Compound of 腿 (もも, 'thigh') and 上げ (あげ, 'raising'), from the verb 上げる (あげる, 'to raise').