Does Caffeine Improve Rowing Performance? What Studies Show

A 2000 m race on the erg or on the water lasts roughly six to eight minutes and hurts from the first stroke to the last. Any edge feels worth having, and caffeine is the most common legal one. So does caffeine improve rowing performance? Controlled lab studies say it can: in competitive male rowers, caffeine taken an hour before a 2000 m ergometer test cut time by about 1.2 percent and raised average power by about 2.7 percent. The catch is the dose. The studies used 6 to 9 mg per kilogram of body weight, which is far more than everyday guidance for most people.

Here is what the rowing research actually measured, what it means in seconds, why the doses deserve caution and how to test caffeine sensibly in training.

Key takeaways

• In a 2000 study of 8 competitive oarsmen, caffeine improved 2000 m erg time by about 1.2% and mean power by about 2.7%.
• A parallel study in competitive oarswomen found a significant improvement at 9 mg/kg but not at 6 mg/kg, with the biggest effect in the first 500 m.
• Responses varied between individuals.
• The doses tested (6 to 9 mg/kg) are high; for a 75 kg rower that is 450 to 675 mg, above the 400 mg per day the FDA cites for most adults.
• Caffeine is not on the World Anti-Doping Agency’s prohibited list, but test any plan in training first and talk to a sports dietitian or doctor.

In this article

1. What the rowing studies found
2. What 1.2% means in a 2000 m race
3. Why the dose matters
4. How to test caffeine for rowing
5. FAQ

Does caffeine improve rowing performance? What the studies found

The best-known rowing data come from two linked studies by an Australian research team published in 2000, one in men and one in women. Both used the same design: several familiarization trials on an air-braked rowing ergometer, then three 2000 m tests, 3 to 7 days apart, after taking a placebo, 6 mg/kg caffeine or 9 mg/kg caffeine one hour beforehand.

Men: Bruce et al., 2000

Eight competitive oarsmen completed the tests in a randomized, double-blind crossover design. Published in Medicine and Science in Sports and Exercise, the study found:

• 2000 m time was reduced by a mean of 1.2% (likely range 0.4 to 1.9%).
• Mean power rose by 2.7% (likely range 0.4 to 5.0%).
• The two doses had similar effects.
• Rowers could not tell caffeine from placebo.
• There was some evidence of individual differences in response.

The authors described this as a worthwhile enhancement of short-term endurance performance in a controlled laboratory setting.

Women: Anderson et al., 2000

In the companion study of well-trained female rowers, published in the International Journal of Sport Nutrition and Exercise Metabolism, performance improved significantly at 9 mg/kg but not at 6 mg/kg. The conference summary of the study noted that the effect was largest in the first 500 m, suggesting caffeine helped most in the early part of the race.

Limits of the evidence

• Small samples: 8 men and 6 women.
• Lab, not water: ergometer tests remove wind, waves, crew dynamics and race tactics.
• High doses only: the studies did not test lower amounts.
• Individual variation: some rowers responded more than others.

What 1.2% means in a 2000 m race

Percentages sound small. In a race decided by seconds, they are not. Here is what a 1.2% time improvement looks like at different 2000 m times.

Four to six seconds can be the gap between places in a final. That is why caffeine gets so much attention in rowing. It is also why individual testing matters: an average effect of 1.2% can hide rowers who gain more and rowers who gain nothing.

Why the dose matters

The rowing studies used doses calculated per kilogram of body weight. Here is what those amounts look like in milligrams, next to general reference points.

For comparison:

• The FDA cites 400 mg a day as an amount not generally associated with negative effects for most healthy adults, and lists jitters, a fast heart rate, upset stomach and sleep problems among the effects of too much.
• The European Food Safety Authority considers single doses up to 200 mg safe for most healthy adults.
• A 12 oz cup of brewed coffee contains about 113 to 247 mg, according to the FDA.

In other words, the research doses for most rowers exceed everyday safety reference points, sometimes by a wide margin. That does not make them automatically dangerous for every athlete, but it is a strong reason not to copy them without professional advice. Note that the 3 mg/kg column is included only for scale; it was not tested in these rowing studies.

Caffeine is not banned in competition. Our article on whether caffeine is banned in sports explains its history on the anti-doping list.

How to test caffeine for rowing

If you want to try caffeine for racing, treat it like any other piece of kit: test it in training, never for the first time on race day.

1. Talk to a professional first if you have any heart condition, anxiety, high blood pressure, are pregnant, are under 18 or take medication.
2. Start low. Try a normal cup of coffee before a hard erg session rather than a high research dose.
3. Time it. The rowing studies used one hour before exercise. Our guide on how long caffeine takes to work explains the timing.
4. Measure. Compare split times and perceived effort on similar sessions with and without caffeine.
5. Watch side effects. Shaky hands, a racing heart or stomach upset are bad news in a boat.
6. Protect your sleep. Afternoon or evening racing plus caffeine can wreck recovery sleep.

Coffee for training days

If coffee is your pre-training ritual, freshness and consistency make it easier to know exactly what you are drinking. Our Max Caf Blend combines Tanzanian coffee with Indian Robusta for a bold, high-caffeine cup, so measure it carefully. For a gentler routine, Half Caf blends regular coffee with water-process decaf, and Instant Coffee fits in a gym bag for regatta mornings.

Caffeine and rowing FAQ

How much faster does caffeine make rowers?

In one controlled study of male rowers, about 1.2% faster over 2000 m on an ergometer, roughly 4 to 6 seconds depending on the rower’s time. Individual results varied.

When should rowers take caffeine before a race?

The rowing studies gave caffeine one hour before the test. Test timing in training before using it on race day.

Is caffeine allowed in rowing competitions?

Caffeine is not on the World Anti-Doping Agency’s prohibited list. Check your federation’s current rules if you are unsure.

Should junior rowers use caffeine?

No. The American Academy of Pediatrics, as cited by the FDA, discourages caffeine for children and teenagers.

Sources

1. Bruce CR, Anderson ME, Fraser SF, et al. Enhancement of 2000-m rowing performance after caffeine ingestion. Medicine and Science in Sports and Exercise, 2000;32(11):1958–1963. Abstract
2. Anderson ME, Bruce CR, Fraser SF, et al. Improved 2000-meter rowing performance in competitive oarswomen after caffeine ingestion. International Journal of Sport Nutrition and Exercise Metabolism, 2000;10(4):464–475. Repository record
3. Higher doses of caffeine improve rowing performance in females (conference abstract summary). Coaching Science Abstracts, San Diego State University. coachsci.sdsu.edu
4. Spilling the Beans: How Much Caffeine Is Too Much? U.S. Food and Drug Administration. fda.gov

Facts checked in October 2026.

This article is for general information only and is not medical advice. If you have a health condition, are pregnant or take medication, ask your doctor before changing your caffeine intake.

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