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Baseball · Recovery

Feet Are Equipment

You replace your bat, restring your racket, and re-grip your clubs. Your shoes are two seasons old and your insoles are original.

Springbak Performance Desk · June 16, 2026 · 4 min read

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Athletes competing across multiple sports

Athletes audit everything except the thing every movement passes through. Foot fatigue is not a minor complaint — it is the first domino in a chain that ends with a hip that will not rotate and a swing that arrives late.

The audit

  • Count sessions on your current shoes, not months. Over 200 hard sessions is past due.
  • Pull the insole and look at the heel and forefoot wear pattern.
  • Press the platform under the insole. If it feels dead, it is.
  • Rate late-session foot fatigue 1 to 10 for two weeks and watch the trend.

Rotation, cutting, and the ground

A swing is a ground-up sequence: back foot loads, hips rotate, the barrel follows. A stable, responsive base under the foot supports that transfer for nine innings, not three.

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Put it beneath your feet

Springbak® Springsoles — 3/32nds of an inch. Try untrimmed; trim the toe or forefoot only if needed.

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The receipts

Patented. Force plate tested.

See the patents and the studies

Patents

  • 4

    U.S. patents

    Nos. 5,554,694, 5,695,850, 6,120,880, 6,589,630 B1 — performance-enhancing athletic shoe components and methods.

    Read the patent family

Force plates

  • 2×+

    Force to displace

    Force plate testing at the Weber State University Human Performance Laboratory: more than twice the force was needed to push subjects off balance on Springsoles.

    See the force plate data
  • Balance

    & stability study

    Evaluated with Dr. Michael Yessis, Dr. Robert Wiswell and Howard Gray, PhD — stability and functional strength, measured rather than claimed.

    Read the study