Lying with one knee bent, the long leg's thigh tightens to press the back of the knee down toward the floor as the toes pull up: the knee programme's first strengthening exercise, before the leg is lifted at all.
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Quadriceps strength family
Quad set (static quads)
Easier option
These tiers compare demands within this family, not universal safety or a mandatory sequence. Load, range, balance and your circumstances can change difficulty. Choose deliberately; pain does not select a progression.
Lying with one knee bent, the long leg's thigh tightens to press the back of the knee down toward the floor as the toes pull up: the knee programme's first strengthening exercise, before the leg is lifted at all.
DemandEasy
Equipment requiredFloor space
Muscle focusQuads
The figure gets into position, then repeats the movement. Technical checks passed; qualified exercise review is pending.
Watch this variation on the 3D figure above: it gets into position, then repeats the movement.
Source-researched guide. Clinical review is pending.
How to move
Lie on your back with one knee bent and that foot flat, the other leg long on the floor.
Pull the long leg's toes toward you and tighten the front of the thigh, pressing the back of the knee down toward the floor.
Hold for about five seconds, then relax.
Form cues
The kneecap should slide up toward the hip as the thigh tightens.
When it is easy, lift the tightened leg a little: the straight leg raise.
Practice and cautions
No universal dose is assigned. Choose a manageable amount for your current capacity, leave room for controlled repetitions, and allow recovery. A clinician’s individual plan takes priority.
This is movement education, not an assessment or treatment prescription. Stop for sharp or increasing pain, dizziness, numbness or tingling; seek individual guidance for symptoms, injury or restrictions.