Caffeine and sport: recent studies

New interesting evidence related to the involvement of caffeine in sport performance has been published during the last month.

The first of these studies suggests that 6 mg/kg BW caffeine supplementation improves by ~2% rowing (2000 m effort)
performance; combination with sodium bicarbonate seems to prevent performance enhancement, due tu GI side effects.
Further investigation to minimize GI symptoms is required. Health claims on caffeine have received favorable opinions by EFSA but have caused concerns with Member States.
The second one reports that adding 8 mg/kg BM caffeine to postexercise carbohydrate (CHO) feedings seems to improve subsequent high-intensity interval-running capacity compared with CHO alone. This effect may be related to higher rates of postexercise muscle glycogen resynthesis previously observed under similar feeding conditions. In line with EFSA health claim assessment (still controversial with Member States) it may be interesting to suggest on label to take
caffeine supplements after the intake of CHO, or with CHO. Nevertheless the recommended dosage in the study seems to be too high (560 mg/day for a 70 kg person).

In both studies a potential concern seems to be related to the levels of caffeine used. For example EFSA, in its opinions, takes into
account lower levels of caffeine compared to those used in trials; Member States allow lower amounts of caffeine in food supplements (Belgium bans solid caffeine). In Italy, for example, no more than 300 mg/day caffeine are informally allowed.

These studies provide further support to the use of caffeine in sports under some circumstances, although levels may be an issue.


Armando Antonelli – Sport Nutrition Team

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One Response to Caffeine and sport: recent studies

  1. Pingback: Caffeine SupplementsFitness and Supplements

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