Seated Leg Extension Exercise Guide - Improve Knee Strength Safely #3012991 (License: Personal Use)

The illustration shows a person seated on a simple wooden chair, extending one leg forward parallel to the floor while maintaining proper posture. She wears dark leggings, a patterned short-sleeve top, and supportive athletic shoes, emphasizing form and stability during the movement. This low-impact exercise targets the quadriceps and is commonly used in physical therapy and home fitness routines.

Used in fitness articles, physical therapy guides, senior wellness resources, and beginner workout tutorials; matches user intent for safe, equipment-free strengthening exercises targeting knee stability and quad activation.