Research
Energy balance
Caffeine could not fully restore power output to levels seen with normal glycogen availability.
Caffeine may enhance performance but should not be relied upon to completely counteract the effects of low glycogen.
StrongQualifiesmedium confidence
caffeine enhanced power output independently of muscle glycogen concentration but could not fully restore power output to levels commensurate with that when subjects commenced exercise with normal glycogen availability.
Why this rating
Based on study design from abstract.
Source
Caffeine Ingestion and Cycling Power Output in a Low or Normal Muscle Glycogen State
Stephen C. Lane et al. · Medicine & Science in Sports & Exercise · 2013
DOI 10.1249/mss.0b013e31828af183
other · n=12Cited 52×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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