COACH KINYON’S INSIGHTS:
I do think the players coming out of high school would benefit greatly by better addressing their physical needs in order to compete at the next level. A less acknowledged but equally important aspect of this is learning and implementing the proper eating habits that would help them prepare for competition.
I think it would be helpful, Pat, if you would address this issue in terms of (a) the proper general diet for players, (b) the pre-match diet for optimal performance, and (c) match hydration and feeding. Coming from you, my players will be more likely to heed the advice. And the more specific you can be, the easier it will be for them to do what you suggest.
–Chuck Kinyon, Dartmouth Tennis Coach
PAT ETCHEBERRY’S RESPONSE:
Coach Kinyon is absolutely correct in pointing out the importance of diet in success in tennis. Eating the right foods helps players maintain desirable body weight, stay physically fit, and establish optimum nerve-muscle reflexes. All of your players should have a healthy diet of a nutritional balance of carbohydrates, protein and healthy fats, but they have to be in the right amounts. The ITF recommends that carbs represent 60% of the calories in your diet, proteins only about 10-15%, and fat 20-30%.
Participating in sports can drastically increase your players’ food energy needs. Increased physical activity calls for more food calories. Also, when they train, they increase muscle tissue relative to fat tissue, and muscle tissue requires more calories than fat tissue. Going out for sports can easily increase the daily calorie needs of a teen athlete by 2,000 or more. And because of their rapid growth and development and higher levels of physical activity, many teen athletes should eat the higher levels of servings recommended from each food group — especially from the bread, cereal, rice, and pasta group and the vegetable group.
What your players eat every day affects their performance, and what you eat immediately before a match can be vital. The right foods at the right time can actually give them a competitive edge. Players of all ages need to eat the proper foods for days before a tournament to charge their muscles with glycogen. They need foods high in starch to help keep muscle energy up.
Coaches and trainers should monitor a player’s weight, and if he or she loses body weight during a competitive season, it’s a good indication that they aren’t eating enough energy-providing food. Weigh your players once a week throughout the season to guard against unhealthy weight loss caused by inadequate food intake. Hydration is another sensitive area. Many coaches and athletes once believed that restricting water during a competition or practice session toughened an athlete — that somehow athletes needed less water. Without enough water to cool itself, the body can overheat to dangerous levels.
As conditioned athletes, your players are able to store and burn more energy in a shorter time. That means their bodies release more heat, require more cooling, lose more water, and need more water to replenish its stores. Also, they sweat more, which means they lose even more water. The truth is, well conditioned players need more water than other people.
Drinking moderate amounts at frequent intervals is the best strategy during competition or practice; about six to eight ounces of cool water every 15 to 20 minutes during a match. Cool water (40 to 50 degrees Fahrenheit) is best because it helps absorb body heat. And it empties from the stomach into the intestine at a faster rate, allowing it to be absorbed rapidly into the body. Water is the drink of choice for activity less than 60 to 90 minutes. But many tennis matches go beyond that time frame, and then sport drinks containing carbohydrates and electrolytes may offer players an advantage.
The goal of nutrition is to fuel your players’ bodies for greater efficiency. Coaches shouldn’t use food as a reward or a punishment, i.e. dieting or feasting. Your players require a well balanced program which accommodates both on court and off court needs. And Juniors in particular need it to maximize performance now and to minimize the potential for career threatening injuries in the future.
I hope I have made it clear how critical it is that your players maintain a proper diet to support all of the conditioning and training they do daily. Without it, their bodies can’t perform at an optimum level during crunch times. Put another way, Champions are what they eat.
Here are some websites where you can find more tennis-specific nutritional information from real dietary experts.
www.usta.com/juniors/fullstory.sps?iNewsid=28344
www.itftennis.com/juniors/usefultips/nutrition/
www.athletes.com/fun/peak18.htm, www.ais.org.au/nutrition
www.sma.org.au/mediareleases/2003%2001%2022%20-%20Tennis%20Preparation,%20Nutrition%
www.ais.org.au/nutrition/documents/FuelTennis.pdf
www.health.arizona.edu/health_topics/nutrition/sports/wtennis.pdf
www.ushsta.org/PLAYERS/PUBLICAREA/HSTMAG/2002/30.htm
And for a veritable smorgasbord of information and suggested meal plans, go to www.urbanext.uiuc.edu/hsnut/hsath2c.html for pregame menus, www.urbanext.uiuc.edu/hsnut/hsath1d.html for energy-packed main meal menus, and www.urbanext.uiuc.edu/hsnut/hsath4g.html for hydration hints.
And thanks to Coach Kinyon for raising this most important issue.