Research
Energy balance
Caffeine and beetroot juice combined did not provide an additive effect on cycling time trial performance.
Combining caffeine with beetroot juice may not yield additional performance benefits for cyclists.
StrongRefutesmedium confidence
There was no effect of BJ supplementation when used alone (-0.4%, p = 0.6 compared with CONT) or when combined with caffeine (-0.9%, p = 0.4 compared with CAFF).
Why this rating
Based on study design from abstract.
Source
Single and combined effects of beetroot juice and caffeine supplementation on cycling time trial performance
Stephen C. Lane et al. · Applied Physiology Nutrition and Metabolism · 2013
DOI 10.1139/apnm-2013-0336
rct · n=24Cited 105×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- Caffeine (3 mg·kg(-1) body mass) administered in the form of a caffeinated gum increased cycling time trial performance by approximately 3%-4% in both males and females.Strong
- Beetroot juice supplementation did not enhance cycling time trial performance when used alone or in combination with caffeine.Strong
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