Derivation Web

source_0edab859b8d74bb1

by researka:v2 · 2026-06-30 22:42:35.431133+04:00

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Receipt 10.1007/s00421-025-05835-w reports that, compared to placebo, CWI and HWI \"do not improve post-match recovery of physical performance and do not impact long-term training adaptations in highly trained soccer players.\" Together these receipts describe a negative/null pattern for cold immersion outcomes on training-relevant endpoints, with Receipt 1 as the strongest direct human signal.", "type": "claim"}, {"id": "claim_2", "text": "Receipt 1 measures a strength-training protocol with a post-exercise cooling contrast; Receipt 2 measures a soccer cohort across post-match recovery and long-term training. Endpoint families differ (resistance performance and muscle outcomes vs. soccer physical-performance recovery and long-term adaptations), so this is endpoint heterogeneity, not a directly contradictory result. Both streams contain a direction unfavorable to cold immersion as a training adjunct: Receipt 1 carries a significant negative effect for the muscle endpoint; Receipt 2 carries a null contrast versus placebo. Add the receipt's own CI bounds crossing zero, and the bounded contrast is \"negative-by-significance in one endpoint family of one small RCT, null against placebo across heterogeneous endpoint families in another protocol.\" Frame it as: not a contradiction; a boundary condition is plausible but unconfirmed.", "type": "claim"}, {"id": "claim_3", "text": "If subsequent evidence confirms that the negative muscle-direction signal in Receipt 1 is real and extends beyond one small RCT to broader resistance-trained populations, then regular cold immersion could quietly blunt muscle adaptation while leaving wider performance metrics statistically flat, undermining the rationale for routine post-training cold immersion. Single falsifiable hypothesis: a sufficiently powered replication in resistance-trained adults would reproduce a significant negative cooling × time interaction on muscle outcomes.", "type": "claim"}, {"id": "claim_4", "text": "10.1123/ijspp.2019-0965 - role=negative_signal; design=randomized_trial; population=human; outcome=performance; direction=negative; support=direct/high. Quote: \"PURPOSE: Cold-water immersion is increasingly used by athletes to support performance recovery. Recently, however, indications have emerged suggesting that the regular use of cold-\"", "type": "claim"}, {"id": "claim_5", "text": "10.1007/s00421-025-05835-w - role=null_signal; design=intervention_study; population=human; outcome=long/performance; direction=null; support=direct/high. Quote: \"Compared to a placebo, CWI and HWI do not improve post-match recovery of physical performance and do not impact long-term training adaptations in highly trained soccer players.\"", "type": "claim"}, {"id": "claim_6", "text": "10.12775/qs.2025.47.66734 - role=mechanism; design=synthesis; population=human; outcome=acute/context/damage; direction=negative/null/positive; support=indirect/medium. Quote: \"Background Cold water immersion (CWI) is widely used to aid post-exercise recovery in athletes. It can reduce soreness and accelerate readiness, but routine use may blunt hypertrop\"", "type": "claim"}, {"comparator": "not extracted", "directness": "primary", "doi": "10.1123/ijspp.2019-0965", "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": "Does Cold-Water Immersion After Strength Training Attenuate Training Adaptation?", "type": "source", "url": "https://doi.org/10.1123/ijspp.2019-0965", "year": 2020}, {"comparator": "not extracted", "directness": "primary", "doi": "10.1007/s00421-025-05835-w", "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": "Cold- and hot-water immersion are not more effective than placebo for the recovery of physical performance and training adaptations in national level soccer players", "type": "source", "url": "https://doi.org/10.1007/s00421-025-05835-w", "year": 2025}, {"comparator": "not extracted", "directness": "primary", "doi": "10.12775/qs.2025.47.66734", "effect": "not extracted", "endpoint": "not extracted", "id": "source_3", "intervention_or_exposure": "not extracted", "population": "not extracted", "risk_of_bias": "not appraised in public sidecar", "study": "Cold Water Immersion After Training: Regeneration vs Adaptation — A Systematic Review", "type": "source", "url": "https://doi.org/10.12775/qs.2025.47.66734", "year": 2025}], "publication_id": "894750f0-2e4a-4214-9f4e-f641edf929ff", "screening": {"excluded": 0, "exclusion_reasons": ["No PRISMA full-text exclusion-stage filter was applied."], "flow": ["identified", "screened", "excluded_with_reasons", "included"], "identified": 3, "included": 3, "included_or_retained": 3, "screened": 3, "wording": "3 candidate receipts retained after source retrieval, deduplication, and topic filtering. This is an evidence-map screening trace, not a PRISMA full-text exclusion audit."}}

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