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Fitness

Sports Drinks Show Minimal Effect on Tennis Players

You would think sports drinks would aid performance in a two-hour tennis match, but they seemed to have little impact.

Doug Dupont

Written by Doug Dupont Last updated on Nov 22, 2021

Sports drinks are used to improve performance in pretty much every sport, but this practice has been called into doubt in recent years. In a study in the Journal of the International Society of Sports Nutrition, researchers examined the effects of sports drinks on tennis players to find answers.

Study Design

The researchers chose tennis due to its variability and long, grueling season. Tennis matches could be either short and intense or prolonged beyond three hours. It’s not uncommon for a player to have more than one match a day for several days in a row.

In this study, each athlete performed several tests to see how both tennis play and beverage choice impacted performance. They were tested for grip strength, power, fatigue, sprinting speed, and anaerobic endurance via a repeated sprint ability test.

The players also engaged in three full tennis matches of about two hours each. All three matches took place over the course of a day and a half. There were three total conditions the researchers used:

  1. In one of the trials, each player drank a sports drink before, during, and after the matches.
  2. In another trial, the players drank a placebo instead, but in the same amounts and at the same times as the sport drink.
  3. In the final condition, they didn’t play any tennis and only engaged in the tests.

Results

The only significant difference between taking a sports drink and drinking the placebo was in upper body fatigue. Only the lateral head of the triceps was more fatigued when not consuming the sports drink.

Although it wasn’t significant, there was a trend toward improved but less consistent sprinting ability without the sports drink. In the 10m, 20m, and repeated sprint ability tests, performance was best in condition number two, the placebo condition. Since sprint performance was even better in the placebo condition than it was in condition number three, when the athletes didn’t play tennis at all, the tennis game may have potentiated the sprinting.

For whatever reason, during the sports drink condition the athletes clocked slower times. Performance varied more in the non-sports-drink group, indicating that the drink may have had a stabilizing effect on performance.

The researchers concluded the study with an important consideration for all athletes. Even in a game situation as rigorous as these study conditions, with six hours of competitive play spread out over a day and a half, the sports drinks weren’t particularly important. So long as the athletes remained hydrated and ate healthy, balanced meals when they were able, it seems they took care of all of their nutritional needs.

References:

1. Thibault Brink-Elfegoun, et. al., “Effects of sports drinks on the maintenance of physical performance during 3 tennis matches: a randomized controlled study,” Journal of the International Society of Sports Nutrition 2014, 11:46

Photo courtesy of Shutterstock.

Doug Dupont

About Doug Dupont

Having grown up at the foot of a forest covered mountain in rural Vermont, Doug was active from a very young age. Hiking, running, and climbing were a part of everyday life in the Green Mountains. This culture of exercise led to dabbling in martial arts as a teen, and also getting work in a local powerlifting focused gym. Doug continued to pursue knowledge and training in exercise, becoming a certified personal trainer while still a teenager. Once in college he began his hand at the business side of fitness, taking a management position at a large local gym. During that time he became a founding member of the UVM Brazilian Jiu Jitsu club, and was the first among their competition team. After only a few months he was assisting in coaching, and ran conditioning program for the club.

Out of college Doug set up his own training center. He grew his list of clientele including several professional MMA athletes, eventually going so far as to corner a world title fight. He has continued ­­­to develop his business into today.

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