Compare an oral stimulant with nitrate-containing beetroot preparations. Study populations, preparations and exercise protocols differ.
Separate studies, not a head-to-head trial. Source-checked conclusions do not validate older numerical estimates.
Source-checked conclusion: supported
Caffeine can improve endurance performance; responses vary. Higher doses add side effects without reliably adding benefit.
Evidence is stronger for endurance than short strength efforts.
Population: Adults participating in exercise studies. Formulation: Oral caffeine before exercise.
AI-assisted source check dated 2026-09-30. Selected effect only.
Read Caffeine profile, recorded doses, risks and available costs
Source-checked conclusion: uncertain
Nitrate-rich beet juice may help endurance; findings vary.
Nitrate content and fitness matter.
Population: Adults in exercise studies. Formulation: Beetroot juice.
AI-assisted source check dated 2026-09-30. Selected effect only.
Read Beetroot Extract profile, recorded doses, risks and available costs
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