Study note • PMID 27467803
Carbohydrate, Muscle Glycogen, and Improved Performance.
Worth trying if it fits your goal and context.
ELI5
In plain language
In brief: Muscle glycogen is the body's chief source of energy for prolonged exercse at moderately high intensity (65% to 85% of Vo2 max); glyocgen reserves therefore limit endurance… (controlled study; athletes).
The abstract suggests a positive effect on 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: In brief: Muscle glycogen is the body's chief source of energy for prolonged exercse at moderately high intensity (65% to 85% of Vo2 max); glyocgen reserves therefore limit endurance…
- • The abstract suggests a positive effect on Time-trial performance under the tested conditions.
- • Population: athletes.
- • Protocol cues: abstract may omit dose/timing; use the full paper to replicate accurately.
Protocol
Protocol (as reported)
- • Intervention/exposure: taper, tapering.
- • Dose/time/duration: abstract doesn’t include enough detail; use the full paper’s methods section.
- • Outcomes: Time-trial performance.
- • 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 (athletes) working on tapering.
- • Athletes who can measure Time-trial performance 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: controlled study.
- • Population: athletes.
- • Outcomes measured: Time-trial performance.
- • Source: PubMed PMID 27467803 (1987) — The Physician and sportsmedicine.
Results excerpt
What the abstract reports
“Further, athletes can increase their endurance by overloading their glycogen stores.”
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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