Isometric strength holds workout

A strength workout built on isometric contractions: wall sit, glute bridge hold, plank, towel pull and palm press. Students compare holds at different joint angles and learn when this method is useful, for example during injury rehab.

How to play

1. Explain what an isometric contraction is and have students press their palms together hard for 10 seconds to feel it (2 min).
2. In pairs, hold a wall sit at 90 degrees for 30 seconds, then at 120 degrees for 30 seconds; note which felt harder (4 min).
3. Glute bridge hold for 30 seconds and front plank for 30 seconds, twice each (4 min).
4. Partner towel pull: both pull at the same time without moving their feet for 10 seconds, five reps at about 80% effort (3 min).
5. Final circuit: 20 seconds of each exercise back to back, two rounds, with partners checking posture (4 min).
6. Wrap-up: each pair explains one advantage and one drawback of isometric training (3 min).

Rules

• Keep breathing; holding your breath is not allowed.
• In the towel pull, build up force gradually and never let go suddenly.
• If you get heavy shaking or joint pain, come out of the hold.
• Adjust positions to your level and never force an angle.

Variations

Adaptations

• Limited mobility: palm presses, towel pulls and pressing the arms into the armrests from the chair.
• Shyness or autism: work with a trusted partner and keep the exercise order on a card.
• High blood pressure or heart conditions: light intensity only and always breathing, after a medical check.

Learning goals

• Tell apart isometric and dynamic contractions.
• Test how joint angle changes the effort.
• Understand how isometric training helps with injury prevention and rehab.

Equipment for a class of 25

• yoga mats: 25
• towels: 13
• stopwatch: 1

Teacher tip

Breathing is the critical point: have students count out loud during holds. Use old, sturdy towels for the pull.

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