endurance-coach-research-frontierlisted
Install: claude install-skill maxeskell/personal-training-app
# Endurance Coach — research frontier (open problems where this could advance SOTA)
**Use this when** you are ideating *beyond current features*: scoping an open research problem, deciding a
next big bet, judging where this project could genuinely advance the state of the art, or sketching what
might be publishable. Everything here is **open / candidate** — a direction, not a shipped result.
**Don't use this when** you want to:
- make a public/competitive claim or write a release note → `endurance-coach-external-positioning`.
- run the evidence bar, pre-registration, or the idea→adopt/retire lifecycle → `endurance-coach-research-methodology`.
- execute the go/no-go validation campaign for a detector that exists *today* → `endurance-coach-n1-validation-campaign`.
- derive the statistics (Fisher-z CI, FDR, permutation null, Banister) → `endurance-coach-proof-and-analysis-toolkit`.
- look up what a metric *means* (CTL/ATL/TSB, EF, DFA-α1, dose-cycle) → `endurance-domain-reference`.
**Jargon, defined once.** *SOTA* = state of the art. *n=1* = a study of one subject (this single athlete),
so no cross-person averaging is possible. *Causal inference* = proving X *changed* Y, not merely that X and
Y move together. *Confound* = a third variable (e.g. summer heat) that fakes or masks the X→Y link.
*Group-average model* = a model fit across many athletes; its prediction for any one person is the crowd's
mean, which can be wrong for a *non-responder* (someone whose physiology reacts u