Thank you. Note that your statement above partially supports the hypothesis in the original post. The feedback I’m receiving is that a rider moving further back when they go to shorter cranks is to keep their glutes engaged, and that closes off the hips and doesn’t allow them to feel they’re putting their mass into the pedal stroke (and they have issues on the run).

As for ‘putting numbers to this hypothesis’, I wrote that I’m not doing biomechanics research at the moment, so I can only leave you with a hypothesis based on observations, a tiny bit of thematic analysis, and no statistical comparison conducted. I’m not sure what you mean by “normalizing standard” - it sounds like you’re asking for a t-test, but I won’t be doing any analyses. I’m just stating a hypothesis. The feedback I’m getting verbally and seeing in results seems to support the hypothesis, but definitely doesn’t fully confirm it.

I made some edits in the OP that address your other comments - thank you for the thoughts!

watching the women in Kona right now and see many of them crunched up forward - guarantee that’s not where they were during their bike fit, and now their glute vs quad use is far off from what they were perceiving during their bike fit, and I suggest that will affect their run. When triathletes are fit sitting far back behind the bb like a TT rider bound by UCI rules (Remco being an exception), they often inch forward during long course triathlon races (and have to constantly scoot back all race). Rudy (175mm) and Magness (172.5mm) are examples of triathletes in the position I’m speaking of in my OP.

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