Derivation Web

source_40f0fd726fea4da7

by researka:v2 · 2026-05-23 23:01:56.441729+04:00

# Alpha memo — exercise

**Headline:** Exercise: single-source alpha signal
**Alpha score:** 100/100 (internal triage score; not a certainty claim)
**Confidence:** `evidence_backed_signal`
**Memo surface:** `alpha memo`
**Snapshot:** `2026-05-16T18-12-38Z`
**Run:** `exercise-evidence-2026-05-16T18-12-38Z`
**Source thesis:** Pathway-specific anti-inflammatory gating: metformin unlocks TNF-axis suppression in exercise-responsive cancer survivors that exercise alone cannot achieve

## One-sentence thesis

Within the cited source bundle, Compared with control, exercise alone reduced hs-CRP [-30.2%; 95% CI, -50.3, -1.0]; exercise alone reduced hs-CRP and IL6 (-30.9%; 95% CI, -47.3, -9.5); exercise and metformin reduced sTNFαR2 and IL6 (-38.7%; 95% CI, -52.3, -18.9). Treat the broader framing as a follow-up hypothesis, not a settled claim.

## Why this is surprising

The surprise is the within-bundle contrast among cited receipts: Compared with control, exercise alone reduced hs-CRP [-30.2%; 95% CI, -50.3, -1.0]; exercise alone reduced hs-CRP and IL6 (-30.9%; 95% CI, -47.3, -9.5); exercise and metformin reduced sTNFαR2 and IL6 (-38.7%; 95% CI, -52.3, -18.9).

## Evidence receipts

- `fact_id=22116` (`A_core`) — Compared with control, exercise alone reduced hs-CRP [-30.2%; 95% CI, -50.3, -1.0] DOI `10.1158/1940-6207.capr-20-0188`
- `fact_id=22117` (`A_core`) — exercise alone reduced hs-CRP and IL6 (-30.9%; 95% CI, -47.3, -9.5) DOI `10.1158/1940-6207.capr-20-0188`
- `fact_id=22118` (`A_core`) — exercise and metformin reduced sTNFαR2 and IL6 (-38.7%; 95% CI, -52.3, -18.9) DOI `10.1158/1940-6207.capr-20-0188`
- `fact_id=22119` (`A_core`) — exercise and metformin reduced sTNFαR2 (-13.1%; 95% CI, -22.9, -1.0) DOI `10.1158/1940-6207.capr-20-0188`

## What this changes

Treat this as a focused working signal, not a broad topic claim. It moves review attention from a generic Top 5 list to the specific contrast, receipt bundle, and next extraction that could confirm or kill the thesis.

## Limitations

- This is an alpha memo, not a settled review, guideline, or broad consensus claim.
- Interpret the thesis only within the cited receipt bundle and the explicit weakening checks below.
- An independent source fails to reproduce the same contrast.
- The cited source depends on a narrow protocol, subgroup, comparator, or measurement choice.
- Broader receipts show the same topic behaves differently outside the cited source bundle.

## What would weaken this

- An independent source fails to reproduce the same contrast.
- The cited source depends on a narrow protocol, subgroup, comparator, or measurement choice.
- Broader receipts show the same topic behaves differently outside the cited source bundle.

## Strongest counter-evidence

- _No A_core/B_context counter-evidence found in this run; treat this as a single-direction signal until a broader receipt expansion finds a real opposing fact._

## Next extraction

- Protein fractional synthetic rate data stratified by BMI or body-fat percentage in human exercise trials
- sTNFαR2 changes in exercise-only arms of oncology RCTs beyond the Cancer Prevention Research 2020 trial
- NIRS-derived SmO2 or muscle oxygenation responses across exercise training durations in PAD cohorts
- Nitrate or NO-donor supplementation trials with lean-mass or muscle cross-sectional area endpoints in adults ≥65 years
- Individual-level data linking PEDF/VEGF/PAI-1 changes to tumor incidence or recurrence in postmenopausal lifestyle intervention cohorts

## Provenance / priority

- **Topic:** `exercise`
- **Author:** Dom Lynch
- **ORCID:** _not configured_
- **Version:** 1.0
- **License:** CC BY-NC 4.0
- **Canonical URL:** _not assigned_
- **Suggested citation:** Dom Lynch. (2026). Exercise: single-source alpha signal. ReseaRka Evidence Index. Version 1.0.
- **Run bundle SHA-256:** `fe487b28cd8297287f8c8def5605a5aac25b0a1723c07436f22dfdaea7dc6374`
- **Memo SHA-256:** `19294bca15c2d55b4eba45a41b8aea4f0f3ce28f3b246c8db8835a40aa6a4ed9`
- **Priority note:** This memo records the first published framing, source bundle, and evidence receipts for this run. Reuse should cite the canonical version.

{
  "article_type": "alpha_memo",
  "domain_slug": "general",
  "researka_object_type": "submission",
  "researka_submission_id": "3ca3ba1d-f664-42a0-a9e7-47a34cfe7aa4",
  "title": "Exercise: single-source alpha signal"
}