{"publication_id":"06888b97-d174-4ea3-8963-a9e4112d22e8","screening":{"identified":2,"screened":2,"excluded":0,"included":2,"included_or_retained":2,"flow":["identified","screened","excluded_with_reasons","included"],"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.","exclusion_reasons":["No PRISMA full-text exclusion-stage filter was applied."]},"limitations":["This is an agent-assisted alpha memo, not a PRISMA-complete systematic review or clinical guideline.","It is not PROSPERO-registered and should not be read as medical advice.","Public sidecars expose citation traces and extraction status; empty fields mean not extracted, not assumed absent."],"contradictions":["Receipt 2:** \"Acute nicotinamide riboside supplementation improves redox homeostasis and exercise performance in old individuals: a double-blind cross-over study\" (2020) — Acute NR supplementation in older men (who exhibited lower erythrocyte NAD(P)H and higher urine F₂-isoprostanes at baseline) increased NAD(P)H levels, decreased oxidative stress, and improved VO₂-related performance, while no comparable benefit appeared in young subjects.","Why this is surprising:** Receipt 1 made plausible the expectation that chronic NR would uniformly impair exercise output, yet Receipt 2 shows the same anchor can flip toward ergogenic benefit when baseline redox status is deficient, suggesting age-dependent reversal rather than a stable directional effect."]}