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Science & Research

Ketone IQ je podigao nivo ketona na Cape Epicu, ali nije postigao nikakve druge učinke

Dr. Gymbro · · 4 min read

Ketone IQ je podigao nivo ketona na Cape Epicu, ali nije postigao nikakve druge učinke

Osam dana. Stotine kilometara oštrih južnoafričkih single‑track staza. Dve doze premium napitka sa ketonima svakog dana. Na kraju, vozači koji su pili Ketone IQ izgledali su, osećali se i nastupali otprilike isto kao i oni koji su uzimali placebo.

To je naslov novog duplo slepog istraživanja objavljenog u European Journal of Sport Science i predstavlja koristan realni pregled za sve koji razmišljaju o suplementima sa ketonima za oporavak.

Šta su istraživači testirali

Engelbrecht i saradnici su pratili 18 obučenih planinskih biciklista (10 timova) tokom Absa Cape Epic‑a 2025, osmodnevne utrke u više etapa. Vozači su nasumično dodeljeni da uzimaju ili 87,5 mL Ketone IQ, čiji je aktivni sastojak R‑1,3‑butandiol (BDO), ili placebo. Uzimali su ga dva puta dnevno: jednom nakon svake etape i jednom pre spavanja.

Tim je pratio širok spektar parametara:

  • puls, i tokom vežbanja i u mirovanju;
  • unos energije i ugljenih hidrata;
  • hidratacija;
  • parametre sna;
  • kognitivne performanse, uključujući vreme reakcije;
  • subjektivne ocene stresa i oporavka.

To je bila suština studije. Većina istraživanja o ketonima odvija se u kontrolisanim laboratorijskim uslovima. Ova studija je pokušala da otkrije da li BDO pomaže kada se tokom nedelju dana trke nakupi umor, nedostatak sna i pritisci u ishrani.

Upadljivi rezultat: ketoza, ali bez koristi

Napoj je uradio ono što je obećao na hemijskom nivou – BDO je proizveo blagu post‑etapnu ketozu od oko 1,0 mM β‑hidroksibutirata (BHB), počevši već od prve etape.

Prednosti nisu usledile. Tokom trke, obe grupe pokazale su iste znakove akumulacije napora:

  • niži puls tokom vežbanja;
  • viši puls u mirovanju;
  • povećan unos energije i ugljenih hidrata;
  • sporiji odziv do šeste etape.

BDO nije promenio nijedan od ovih pokazatelja u poređenju sa placebo. Naslov rada to jasno navodi: post‑vežbanje BDO nije unapredio pokazatelje umora ili oporavka. Autori zaključuju da je blaga ketoza bila neefikasna pod pravim uslovima trke.

Ovaj obrazac je klasičan prikaz kumulativnog umora u etapnim trkama, a napitak sa ketonima ga nije pomerio.

Butandiol nije isto što i ketonski ester

Ovo je deo koji najčešće zavarava potrošače. „Keton suplement“ obuhvata više različitih proizvoda.

Pozadinska literatura na koju autori upućuju fokusira se na ketonski monoester (KME), za koji je zabeležen bolji oporavak i smanjen fiziološki stres tokom izdržljivog vežbanja. BDO je drugačiji spoj. On je prekursor ketona: telo ga mora pretvoriti u BHB, umesto da direktno primi keton. Generalno, ovaj put pretvaranja dovodi do nižih nivoa ketona u krvi u poređenju sa napicima na monoester bazi, a približno 1 mM viđeno ovde se uklapa u tu sliku.

Autori sami ističu ovu tačku, pozivajući na „specifične formulacije“ evaluacije. Jednostavnim rečima, negativan rezultat za BDO ne dokazuje da ketonski esteri ne funkcionišu, a pozitivna studija o esterima ne dokazuje da BDO deluje. To su odvojeni proizvodi sa zasebnim dokazima.

Šta to znači ako razmišljate o kupovini

Studija ne pokazuje da su ketoni beskorisni, ali podriva ideju da je Ketone IQ prečica za oporavak tokom višednevnih izdržljivih napora.

  • Doza i vreme uzimanja testirano: 87,5 mL dva puta dnevno, posle vežbanja i pre spavanja. To je protokol koji nije pomerio pokazatelje oporavka. Veća doza ili druga vremena nisu testirana.
  • Ko možda neće imati koristi: ako je vaš glavni cilj bolji oporavak, kvalitet sna ili svežina narednog dana tokom etapne trke, ova studija ne pruža dokaz o koristi.
  • Gde vaš novac verovatno daje više: vozači u obe grupe povećavali su unos ugljenih hidrata i energije kako je trka odmicala. Perfekcioniranje ishrane, sna i hidratacije je dobro potkrepljena oblast za ulaganje pre nego što se odlučite na spekulativni suplement.
  • Proverite sastav: ako kupujete, uverite se da li je proizvod BDO ili ketonski ester, i ne podrazumevajte da se rezultati prenose između njih.

Ograničenja koja treba uzeti ozbiljno

  1. Veličina uzorka: 18 vozača je mali broj. Malo istraživanje može propustiti skromne stvarne efekte, pa „nije detektovana razlika“ nije isto što i „dokazano nepostojeći efekat“.
  2. Vozači su trkali u timovima: 10 timova uvodi realni šum – razlike u tempu, izloženosti terenu i individualnim zahtevima etapa, što bi laboratorijska studija izostavila.
  3. Jedan spoj, jedna doza, jedan raspored: nalazi važe za ovaj BDO proizvod, na ovu dozu, u post‑vežbanju protokolu. Ne govore ništa o upotrebi pre vežbanja ili o drugim formulacijama.
  4. Blaga ketoza: nivo BHB u krvi dosegao je oko 1,0 mM. Da li bi viši nivoi promenili ishode nije testirano.

Dizajn je ipak jak – duplo slepa, placebo‑kontrolisana proba u stvarnoj osmodnevnoj trci je teško izvodiva i predstavlja tip ekološki validnih podataka koji često nedostaju u marketinškim tvrdnjama suplemenata.

Zaključak

Ketone IQ je podigao nivo ketona kod vozača na Cape Epicu, ali nije smanjio napor, zaštitio vreme reakcije niti pobolio oporavak u poređenju sa placebo. Za izdržljive sportiste koji razmišljaju o premijum napitku sa ketonima, dokazi iz ove studije savetuju skepticizam prema BDO‑u za oporavak. Veće studije i direktna poređenja sa ketonskim esterima pružile bi potpuniji odgovor.

Izvor: Engelbrecht et al., "Post‑Exercise R‑1,3‑Butanediol did not Improve Markers of Fatigue or Recovery During a Multi‑Stage Mountain Bike Race," Eur J Sport Sci (2026). DOI: https://doi.org/10.1002/ejsc.70260. PubMed: PMID 42852530.

Original study

Read the original research on pubmed.ncbi.nlm.nih.gov →

This article summarizes published research for general information. It is not medical advice.

DG

Written by

Dr. Gymbro

Dr. Gymbro writes for Dr. Gymbro: science-backed fitness, nutrition & performance.

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