Study note • PMID 37010270
Similar performance after intake of carbohydrate plus whey protein and carbohydrate only in the early phase after non-exhaustive cycling.
Low risk + high feasibility for most athletes.
ELI5
In plain language
The aim of the present study was to compare performance 5 h after a 90-min endurance training session when either carbohydrate only or carbohydrate with added whey hydrolysate or… (randomized trial; trained cyclists).
The abstract doesn’t indicate a clear change in Time-trial performance under the tested conditions. Treat this as a signal, not a guarantee; confirm methods and context in the full paper.
Takeaways
What the abstract suggests
- • Study question: The aim of the present study was to compare performance 5 h after a 90-min endurance training session when either carbohydrate only or carbohydrate with added whey hydrolysate or…
- • The abstract doesn’t indicate a clear change in Time-trial performance under the tested conditions.
- • Population: trained cyclists.
- • Protocol cues (title/abstract): 1 week • 5 h • 2 h • 60 min • 1 h • 01 min.
Protocol
Protocol (as reported)
- • Intervention/exposure: carbohydrate, carb (vs comparison group).
- • Dose/time/duration cues in abstract/title: 1 week • 5 h • 2 h • 60 min • 1 h • 01 min.
- • Outcomes: Time to exhaustion, Time-trial performance, Fat oxidation.
- • Replication note: abstracts often omit adherence and timing; confirm details before changing training or supplementation.
Fit
Who it helps, and who should skip it
Who it helps
- • Athletes similar to the study population (trained cyclists) working on fueling.
- • Athletes who can measure Time to exhaustion, Time-trial performance, Fat oxidation with a repeatable workout or time-trial effort.
Who should skip
- • If you have symptoms or conditions that make the intervention risky, get professional guidance.
- • If you’re near race day and can’t safely test, defer the experiment.
Methods
What the study actually did
- • Design: randomized trial (double-blind).
- • Population: trained cyclists.
- • Comparator: comparison group.
- • Outcomes measured: Time to exhaustion, Time-trial performance, Fat oxidation.
- • Protocol cues mentioned: 1 week • 5 h • 2 h • 60 min • 1 h • 01 min.
- • Source: PubMed PMID 37010270 (2023) — Scandinavian journal of medicine & science in sports.
Results excerpt
What the abstract reports
“Nitrogen balance during CHO was lower than ISO (p < 0.0001) and HYD (p < 0.0001), with no difference between ISO and HYD (p = 0.317).”
Note: excerpts are short; for full context, read the paper.
Limits
Limitations & bias
- • Abstract-only summaries can miss critical details (population, protocol, adherence, and context).
- • Single studies often don’t generalize to your event, history, and training load; treat results as a starting point.
- • If your context differs (elite vs recreational; cycling vs running), adjust expectations and be conservative.
- • This is performance information, not medical advice.
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