Coach'Em Up Podcast: ep 97- sprint mechanics, force production & fascia science| Q&A with Daniel Back

May 15, 2026

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Squat/deadlift strength produces internal muscle tension, which is different from the external ground force used in sprinting.
Sprint ground force occurs in ~0.1s bounces; heavy lifts are slow contractions and don’t directly equal sprint force.

Daniel Back describes an athlete who stopped lifting for three months, ran track-only, and still got markedly faster (three seconds in the 400m).
Removing heavy lifting in-season often doesn’t cause a catastrophic loss of strength or sprint performance if the athlete built strength in the off-season.
Sprinting and jumping maintain and even enhance neural drive more effectively than heavy squatting because they require instant maximal output.
A small loss of quad muscle from not squatting usually doesn’t translate to worse 400m performance.
Context matters: if an athlete didn’t build strength preseason, you may need to reintroduce lifting during the season rather than remove it entirely.

Researchers proposed broadening “fascia” to include other fibrous connective tissues, effectively grouping ligaments and tendons into a body‑wide fascial net.
Daniel Back warns this reclassification lets people take tendon research (like the tendon catapult mechanism) and improperly apply it to fascia.
Tendons and fascia differ anatomically and functionally: the calf transmits force primarily through the Achilles tendon, not through surrounding fascia.
You cannot simply co‑opt tendon mechanics to explain fascial behavior; structural position and primary force paths matter.
Back highlights the risk of overgeneralizing mechanistic findings from one connective tissue to another without anatomical justification.

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