Foundation Stack
Foundation Stack
One topic · four pillars · knowledge that compounds
Long-form, PMID-backed installments on adolescent PPCS aerobic exercise prescription — how protocols set intensity, how measurement choices affect home delivery, and what clinicians can write on Monday morning.
7 installments published · series ongoing · Latest: When Installments Disagree: A Cross-Path Topology for PPCS Aerobic Documentation
Written by Guang Li (Jack) — graduate athletic training researcher. Primary audience: clinicians and researchers; parents can start from each installment’s SOP and plain-language notes. About this series →
Why this series exists
Published protocols often disagree on how hard, how long, and how to monitor sub-symptom aerobic exercise after concussion. Community settings rarely match trial equipment or supervision. Each installment isolates one operational problem, puts the evidence in tables, and ends with an actionable SOP — so this URL stays a citable reference surface for teaching and practice, not a feed of disposable posts.
Four pillars
| Pillar | Code | Prefix | What you get |
|---|---|---|---|
| Top-journal reproduction | reproduce |
pillar1- |
Audit landmark RCTs: dose reported vs dose performed |
| Methods comparison | methods |
pillar2- |
Protocol comparison, measurement, coding rules |
| Synthetic experiments | synth |
pillar3- |
Priors, dashboards, dose–heterogeneity experiments |
| Pitfalls & SOP | sop |
pillar4- |
Checklists for AT/PT; plain-language notes for parents |
Installment IDs use pillar{N}-{seq}-{slug} (e.g. pillar2-001-six-protocols-comparison).
Fixed article structure
- Problem · 2. Comparison table · 3. Disagreements · 4. Methods · 5. SOP · 6. Limitations
Published installments
| ID | Published | Title | Summary | Pillar |
|---|---|---|---|---|
| pillar2-008 | Jul 16, 2026 | What a Dated Search Still Did Not Find: Wrist-Read Completion and Same-Day Load | Two documentation questions in adolescent PPCS aerobic care—whether wrist-read session completion can be trusted under a session-ramp advancement rule, and whether any published source states a same-day school-plus-sport hold—are searched in primary literature. Both remain unaddressed. | methods |
| pillar2-007 | Jul 9, 2026 | Path × Logic Documentation Grammar for Adolescent PPCS Aerobic Care | Six decisions recur on an adolescent PPCS aerobic note—testing access, intensity-plus-device path, school/sport staging, progression logic, weekly volume. Primary sources support some of those combinations, forbid others, and leave most silent. | methods |
| pillar2-006 | Jul 3, 2026 | Wrist HR vs Chest Strap: What Community PPCS Prescription Assumes | Community sub-symptom prescriptions often treat wrist optical heart rate as interchangeable with the chest-strap channel used in evidence. Validation studies report device- and intensity-dependent limits of agreement tens of bpm wide—wider than a typical prescription band. | methods |
| pillar2-005 | Jun 24, 2026 | When Do You Advance? Progression Rules After the First Prescription | Three ways to advance an adolescent concussion aerobic prescription—weekly BCTT retest, CISG step rules (24h floor on sport steps only), or session ramps—and whether those rules still apply when return-to-learn and return-to-sport run together. Ideal-document minima are not expected recovery times. | methods |
| pillar2-004 | Jun 19, 2026 | Two Tracks, One Athlete: Return-to-School vs Return-to-Sport Staging | I expected one recovery timeline—I found two vocabularies (RTS means school in one protocol and sport in Berlin) and clocks that do not compare. This piece maps parallel return-to-learn and return-to-sport checklists and where aerobic prescription must follow the school leg. | methods |
| pillar2-003 | Jun 17, 2026 | Twenty Minutes From Where? Why Session Duration Is the Wrong Unit for Adolescent PPCS Prescription | Twenty minutes appears on every adolescent PPCS handout—but the number circulates by citation, not experiment. This methods piece maps that history, then where observational weekly-volume work comes closest to an answer. | methods |
| pillar2-002 | Jun 10, 2026 | No Treadmill in the Room: Prescribing Sub-Symptom Aerobic Exercise Without BCTT | When symptom-threshold treadmill testing is unavailable, published protocols fall back to bike tests, field exertion, age-predicted heart-rate bands, and RPE anchors—but they do not agree. What follows compares those paths and shows how one educational tool encodes the fallback logic. | methods |
| pillar2-001 | Jun 4, 2026 | Six Protocols, One Condition: A Clinician’s Guide to Adolescent PPCS Aerobic Exercise Prescription | Six published protocols recommend sub-symptom-threshold aerobic exercise for adolescent PPCS—but they disagree on testing, formulae, and progression rules. This piece lays them side by side and asks which fits your setting. | methods |