Assisted Prone Hamstring exercise animation (Male)

Assisted Prone Hamstring

Target muscle
Hamstrings
Equipment
Assisted
Body part
Thighs
Type
Strength

The assisted prone hamstring is a strength exercise that targets the hamstrings while you lie face-down. Performed with assistance to control the load and range of motion, it isolates the back of the thigh and builds knee-flexion strength with low spinal stress.

How to do the Assisted Prone Hamstring

  1. 1Lie face-down (prone) on a flat bench or padded surface with your legs straight and your hips pressed into the pad.
  2. 2Set the assistance so it supports the working leg through the movement, letting you control the resistance you can handle.
  3. 3Brace your core and squeeze your glutes lightly to keep your pelvis flat and your lower back neutral.
  4. 4Curl your heels up toward your glutes by bending at the knees, keeping your thighs in contact with the pad.
  5. 5Drive the contraction with your hamstrings until your knees are fully flexed, pausing briefly at the top.
  6. 6Lower your heels back down under control over 2–3 seconds until your legs are straight again.
  7. 7Complete your reps, then release the assistance and rest with your legs flat.

Form tips

  • Keep the movement at the knee only — your hips and thighs should stay pinned to the pad so the hamstrings do the work.
  • Use the assistance to slow the lowering phase, where most hamstring growth and strength comes from.
  • Point your toes neutrally and avoid jerking the heels up; a smooth, controlled tempo keeps tension on the muscle.
  • Squeeze the hamstrings hard at the top of each rep before lowering, rather than rushing back down.

Common mistakes

  • Lifting the hips or arching the lower back to swing the heels up, which removes tension from the hamstrings and stresses the spine.
  • Dropping the heels quickly on the way down, wasting the most productive part of the rep and increasing strain risk.
  • Using only a partial range of motion, which under-trains the hamstrings at both the lengthened and shortened positions.
  • Relying too much on the assistance, so the hamstrings never work hard enough to build strength.

Frequently asked questions

What muscles does the assisted prone hamstring work?

It targets the hamstrings — the muscles on the back of the thigh that flex the knee. The face-down position isolates them with minimal involvement from other muscle groups.

Is the assisted prone hamstring good for beginners?

Yes. The assistance lets you control the load and range of motion, so beginners can learn the knee-curl pattern and build hamstring strength safely before progressing to heavier work.

How many sets and reps should I do?

For strength and muscle, 3–4 sets of 8–12 controlled reps per leg is a sensible default. Add resistance or reduce the assistance gradually as the movement gets easier.

Where should I feel the assisted prone hamstring?

You should feel it in the back of your thighs, especially during the slow lowering phase. If you feel it mainly in your lower back, flatten your hips into the pad and curl only from the knee.

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