leg extension

Etymology
From +.

Noun

 * 1)  An exercise performed on a machine while seated. The quadriceps (thigh muscles) are exerted to straighten the knee while acting against resistance applied to the lower shin.

Translations

 * Arabic: تَمْدِيد السَّاق
 * Finnish: jalkojen ojennus
 * German: Beinstrecken
 * Russian: разгиба́ние ног