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  3. Exercises
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  5. Legs
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  7. Sled 45 Calf Press

Exercise guide

Sled 45 Calf Press

  • Beginner
  • Compound
  • Rep-based
  • Lower legs

The Sled 45 Calf Press isolates the gastrocnemius and soleus by using the guided path of a leg press machine to provide a deep stretch and intense contraction. This variation is excellent for building calf thickness and ankle stability with minimal lower back strain.

Reviewed by the Crucible Fit team · Updated June 2026

Watch the Sled 45 Calf Press demonstrationVideo and instructions for every movement are in the Crucible Fit app.

Muscles worked

Primary

  • Calves

Secondary

  • Glutes
  • Hamstrings
  • Quadriceps

Equipment

  • Sled machine

Setup

  1. Sit in the leg press machine and place the balls of your feet hip-width apart on the bottom edge of the platform.
  2. Position your feet so your heels hang off the edge completely, allowing for a full range of motion.
  3. Press the sled up to full leg extension and disengage the safety handles.
  4. Keep your knees 'soft' (slightly bent but fixed) to ensure the tension remains on the calves rather than the joints.

How to do it

  1. Lower the sled by flexing your ankles toward you until you feel a deep stretch in the calves, inhaling during the descent.
  2. Press the platform away by extending your ankles as high as possible, exhaling as you reach peak contraction.
  3. Maintain a controlled 2-second eccentric (lowering) phase and a powerful 1-second concentric (pushing) phase.

Form checklist

  • Keep your knees stationary throughout the movement; do not use your quads to push the weight.
  • Ensure the balls of your feet are securely planted to prevent slipping off the platform.
  • Avoid bouncing at the bottom of the rep; use a controlled transition from stretch to contraction.
  • Push through the big toe and second toe to prevent the ankles from rolling outward.

Pro tips

  • Pause for one full second at the bottom stretch to dissipate the stretch reflex and force the muscle to do the work.
  • Visualize pushing the platform away with the balls of your feet to maximize the mind-muscle connection with the gastrocnemius.

Make it harder

  • Perform the exercise unilaterally (one leg at a time) to increase intensity and address muscle imbalances.
  • Incorporate a 3-second isometric hold at the peak of the contraction on every rep.

Frequently asked

What muscles does the sled 45 calf press work?
The sled 45 calf press primarily targets the calves, and also works the glutes, hamstrings, and quadriceps as secondary muscles.
What equipment do you need for the sled 45 calf press?
The sled 45 calf press uses sled machine.
Is the sled 45 calf press good for beginners?
Yes. The sled 45 calf press is a beginner-friendly movement and a strong foundation to build on.

Related exercises

  • 3 Point Standing HopsIntermediate · calves, glutes, hamstrings, and quadriceps
  • 4 Cone Single Foot Lateral HopsIntermediate · calves, glutes, hamstrings, and quadriceps
  • 4 Way Single Leg HopAdvanced · calves, glutes, hamstrings, and quadriceps
  • Air Pillow Single Leg BalanceIntermediate · abs, calves, and obliques

Train it with Crucible Fit.

Every movement in this library is in the app with video and instructions, ready for your own sessions on the days between Crucibles. Your first Crucible is on us.

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