Fitorex

Sissy Squat

Isolates the quad by taking the knee into deep flexion with the hip extended — the at-home substitute for the leg extension. High load on the knee: only if you are pain-free.

  • Isolation
  • Bodyweight
  • Advanced

How to do it

  • Hold a support and rise onto the balls of your feet
  • Let your knees travel well forward as your torso leans back
  • Hips extended through the whole range: body in a knee-to-shoulder line
  • Rise squeezing your quads, short range at first

Sets, reps and tempo

Ranges: 10–15 reps · 1–2 RIR

Tempo: Lower very slowly for 3–4 s leaning your torso back; come up by extending the knee

Common mistakes

  • Losing the hip-knee-shoulder line
  • Going too fast and stressing your kneecap
  • Not holding on to control the range at first

Muscles worked

Primary

  • Quads

Alternatives

Form animation: Sissy Squat
The same animation you see in the app while logging the set.
Type
Isolation
Equipment
Bodyweight
Level
Advanced
Pattern
Knee-dominant
Stimulus / fatigue
Medium
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