Exercise: single-source lead signal with broader context receipts

Headline: Exercise: single-source lead signal with broader context receipts Alpha triage: high (internal ranking; 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 Direct source breadth: 1 direct cited source(s) Source thesis: Pathway-specific anti-inflammatory gating: metformin unlocks TNF-axis suppression in exercise-responsive cancer survivors that exercise alone cannot achieve Source breadth: 5/5 unique cited source(s)

One-sentence thesis

The direct receipts support a narrow working claim: 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). The context receipts provide source breadth and boundary checks, not independent confirmation of the lead claim.

Why this is surprising

The useful signal is narrower than the topic label: the lead receipts support the core claim, while the added A/B context receipts define where that claim may generalize, fail, or need a separate extraction.

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

Context receipts

• fact_id=12572 (A_core) — Mixed-muscle protein fractional synthetic rate increased by 42% at 3 h postexercise and 69% at 24 h postexercise in CON. DOI 10.1152/ajpendo.00600.2013
• fact_id=41245 (A_core) — tumor-bearing mice with access to running wheels showed reduced growth of MDA-MB-231 (-66%, P < 0.01) tumors DOI 10.1158/0008-5472.can-16-3125
• fact_id=12544 (A_core) — Mortality risk was 11% lower (hazard ratio, 0.89; 95% confidence interval, 0.86-0.93; P<0.001) for every 1-MET increase in exercise capacity. DOI 10.1161/hypertensionaha.114.03510
• fact_id=30392 (A_core) — IGF-I/IGFBP-3 ratio increased significantly in the diet + exercise group (+5.4%, P < 0.01) compared with control. DOI 10.1158/1055-9965.epi-13-0337

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.
• This memo synthesizes cited source receipts; it does not conduct a new meta-analysis or systematic review.
• Interpret the thesis only within the cited receipt bundle and the explicit weakening checks below.
• The core claim rests on 1 direct source paper(s); context receipts broaden the source bundle but are not convergent proof.
• Independent receipts fail to reproduce the claimed contrast.
• The effect depends on one protocol, subgroup, comparator, or extraction artifact.

What would weaken this

• Independent receipts fail to reproduce the claimed contrast.
• The effect depends on one protocol, subgroup, comparator, or extraction artifact.

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

• Extract independent A_core/B_context receipts that test the lead contrast directly.
• Audit whether each direct receipt remains comparable on population, endpoint, comparator, and measurement method.
• Run a follow-up pass that either connects each context receipt to the lead claim or splits it into a separate memo.

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 lead signal with broader context receipts. ReseaRka Evidence Index. Version 1.0.
• Run bundle SHA-256: fe487b28cd8297287f8c8def5605a5aac25b0a1723c07436f22dfdaea7dc6374
• Memo SHA-256: 12c36db3312628e59f58153f26a3a4e818cb983d57e130624eff79bc4b43b487
• Priority note: This memo records the first published framing, source bundle, and evidence receipts for this run. Reuse should cite the canonical version.