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Isometric Inversion

BeginnerStrengthTier T0
Isometric Inversion

Press inside of foot against resistance without movement. Strengthens posterior tibialis and invertor muscles for ankle stability.

Targets: Ankle
Muscles: Tibialis Posterior

Stop if

Choose an easier exercise if pain reaches 6 out of 10 or becomes sharp. Stop and rest if pain reaches 8 out of 10.

This is the general ClapMove rule. This exercise has no extra stop rule of its own.

  • Pain 6 out of 10 or more: choose an easier exercise.
  • Pain 8 out of 10 or more: stop and rest.

Equipment needed

  • Works at home

Home Options

  • doorway
  • wall

Dosage

3

Sets

10 sec

Reps / Time

30 sec

Rest

10-20 sec holds

Tempo

Step-by-Step Guide

Set up

  • Sit with soles of feet together, or
  • Place inside of foot against wall/doorframe, or
  • Use other foot as resistance
  1. Isometric Inversion - Step 1 of 4: Press inside of foot into the resistance

    Step 1 of 4

    Press inside of foot into the resistance

  2. Isometric Inversion - Step 2 of 4: Imagine turning sole of foot inward

    Step 2 of 4

    Imagine turning sole of foot inward

  3. Isometric Inversion - Step 3 of 4: Hold without actual movement

    Step 3 of 4

    Hold without actual movement

  4. Isometric Inversion - Step 4 of 4: Release and rest

    Step 4 of 4

    Release and rest

Breathing

  • Breathe normally throughout

Form Cues

  • Push inward firmly
  • Feel muscles on inside of ankle working
  • Keep foot still - pure isometric
  • Breathe normally

Common Mistakes to Avoid

  • Actually moving the foot
  • Not pressing hard enough
  • Holding breath
  • Using wrong surface

Safety Information

Very safe. Important for posterior tibial tendon support.

Progressions

Stronger push, longer holds

Band InversionBeginner

Regressions

Lighter push, shorter holds