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source_e5e841711e284e2f

sha256 77956e3cce4a2ba10ce56baf742e1f229fbd53427f26eafb5d9cccc1335e7515

by researka:v2 · 2026-06-25 21:36:22.331035+04:00

{"content_hash": null, "edges": [{"from": "a0900cba-0a00-4208-88a9-1b1711cbdbd3", "to": "claim_1", "type": "contains_claim"}, {"from": "a0900cba-0a00-4208-88a9-1b1711cbdbd3", "to": "claim_2", "type": "contains_claim"}, {"from": "a0900cba-0a00-4208-88a9-1b1711cbdbd3", "to": "claim_3", "type": "contains_claim"}, {"from": "a0900cba-0a00-4208-88a9-1b1711cbdbd3", "to": "claim_4", "type": "contains_claim"}], "nodes": [{"id": "a0900cba-0a00-4208-88a9-1b1711cbdbd3", "title": "caffeine / during / exercise", "type": "publication"}, {"id": "claim_1", "text": "Two 1991 caffeine studies appear to disagree when bundled together: a 60-minute submaximal metabolism trial showed no measurable effect, while an elite distance runner time-to-exhaustion trial at the same approximate era showed longer run distance with caffeine. The receipts support treating this as a boundary-condition tension, not a contradiction on the same metric.", "type": "claim"}, {"id": "claim_2", "text": "For elite endurance, where time-to-exhaustion is the operationally relevant endpoint, the positive-signal receipt suggests caffeine ingested just prior to exercise can extend work capacity. For submaximal steady-state work under the null-signal receipt's design, the metabolic readout does not change. The actionable read is that caffeine's lever may depend on the proximity to exhaustion rather than on average metabolism.", "type": "claim"}, {"id": "claim_3", "text": "A within-subject crossover in elite distance runners that pairs time-to-exhaustion with continuous metabolic sampling (RER, FFA, lactate) across the same 10 mg·kg⁻¹ dose would resolve whether the metabolism null is real or a sensitivity-floor artifact of the 1991 submaximal design.", "type": "claim"}, {"id": "claim_4", "text": "10.1080/02640419108729851 — null_signal: 200 mg caffeine, 60 min pre-exercise, 5 males, 60% MHR, no significant metabolic differences.", "type": "claim"}, {"comparator": "not extracted", "directness": "primary", "doi": "10.1080/02640419108729851", "effect": "not extracted", "endpoint": "not extracted", "id": "source_1", "intervention_or_exposure": "not extracted", "population": "not extracted", "risk_of_bias": "not appraised in public sidecar", "study": "Failure of caffeine to affect metabolism during 60 min submaximal exercise.", "type": "source", "url": "https://doi.org/10.1080/02640419108729851", "year": 1991}, {"comparator": "not extracted", "directness": "primary", "doi": null, "effect": "not extracted", "endpoint": "not extracted", "id": "source_2", "intervention_or_exposure": "not extracted", "population": "not extracted", "risk_of_bias": "not appraised in public sidecar", "study": "Caffeine ingestion during exercise to exhaustion in elite distance runners. Revision.", "type": "source", "url": "", "year": 1991}], "publication_id": "a0900cba-0a00-4208-88a9-1b1711cbdbd3", "screening": {"excluded": 0, "exclusion_reasons": ["No PRISMA full-text exclusion-stage filter was applied."], "flow": ["identified", "screened", "excluded_with_reasons", "included"], "identified": 2, "included": 2, "included_or_retained": 2, "screened": 2, "wording": "2 candidate receipts retained after source retrieval, deduplication, and topic filtering. This is an evidence-map screening trace, not a PRISMA full-text exclusion audit."}}
metadata
{
  "researka_object_type": "publication_sidecar",
  "researka_publication_id": "a0900cba-0a00-4208-88a9-1b1711cbdbd3",
  "researka_submission_id": "94bbd2d2-a489-41bd-8b6f-034ce7690659",
  "sidecar_name": "claim_graph.json",
  "sidecar_url": "https://api.researka.org/publications/a0900cba-0a00-4208-88a9-1b1711cbdbd3/sidecars/claim_graph.json"
}

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