USIndoor's Official Magazine is a quarterly publication, dedicated to owners, managers, program administrators and other professionals, startups and providers involved with indoor recreational sports facilities.
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competition. This amount of time have any the response to energy drinks that contain demonstrable effect on performance-enhancing effects. would allow for adequate digestion herbal forms of caffeine, Energy drinks are not adequate synthesis of muscle glycogen during and absorption of the carbohydrate manufacturers often add known recovery, compared to ingesting substitutes for the time, training, before exercise begins. recovery, and fueling required for amounts of synthetic caffeine. equivalent calories of carbohydrate In contrast to energy drinks, an alone. to a Herbs like Astragalus, Schizandrae Moreover, adding protein sports. Athletes must take the effective sports drink is formulated to responsibility for what goes into t sports and Echinacea are claimed to enhance drink may adversely affect the provide approximately 14 g (1 bodies, which includes being taste and mouth feel of the product. immune function and are components teaspoon) of carbohydrate in the form energy beverages. Supposed of some informed as well as cautious about Creatine of sucrose, glucose, fructose (in small memory-boosting herbs like Ginkgo dietary supplements. Education is The amounts of creatine addedcritical for their health, safety, to amounts) or maltodextrins in every 8 and ginseng are also biloba (e.g., oz (240 ml) of beverage. In addition, sometimes included. Additional most energy drinks is too small sport performance. 11.2 mg/8 oz) to be of any benefit to electrolytes (sodium and potassium) ingredients may include putative fatperformance unless the athlete were help drive the desire to drink and may substances such as Ciwujia, burning reduce or prevent cramping during or hydroxycitrate, and/or ephedra. to drink over 150 servings, for five Some after exercise. drinks contain the calming straight days to comply with the herbs typical creatine-loading regimen of 20 kava-kava and St. John s Wort. These Caffeine g/day for five days. ingredients are typically in small Caffeine is a central nervousamounts, but even in larger amounts This article is reprinted from the system stimulant, and although the there is scant evidence that they canPractical Applications effect is temporary, it may make an benefit performance. athlete feel more energized. Being optimally Gatorade Sports Science energized In In addition to the fact that requires a suitable level of physical there is Institute ebsite. For more w laboratory studies, caffeine at little or no scientific evidence of a dose activity, adequate sleep, effective information on ingredients found of about 6 mg/kg body weight (e.g., fueling and hydration strategies, and ergogenic efficacy of these herbs, 490 mg for a 180-lb person) has there are other concerns: probably other unknown factors that in energy drinks or for Dr. Bonci's proved effective at enhancing exercise affect Little or no regulatory control; neurochemicals in the brain. An list of references, go to performance lasting from 1-120 min. Lack of standards and/or energy drink alone will never make up Unfortunately, such large doses of purity; for all of these elements. When it www.gssiweb.com and click on caffeine make some athletes feel Possible mislabeling of comes to choosing any food or Articles for Athletes. Leslie Bonci, light-headed, and, if ingested too far beverage product, athletes must be ingredients leading to positive in advance of exercise, caffeine can doping tests; M.P.H., R.D,. is the Director of skeptical consumers and ask have both laxative and diuretic effects Potential for serious sidequestions before buying. Here are that may impair rather than enhance effects when used with Sports Medicine Nutrition at the some guidelines: Dept. of Orthopedic Surgery and performance. In addition, the dose of medications; Center for Sports Medicine of the caffeine contained in energy drinks is : Label reading is necessary! Potentially fatal side effects, not always apparent on the label but including liver failure : Athletes using medications Univ. of Pittsburgh Medical Center may be high enough to put the athlete should avoid any product that associated with Kava-Kava and at risk for failing a doping test for cardiovascular dysfunction caffeine. and Nutritionist for the NFL's contains herbs. : associated with ephedra; and If there is no Nutrition Facts or Herbs Pittsburgh Steelers. Supplement Facts panel, athletes Possible decrease in performance with large doses should not buy the product. Many energy drinks contain herbal of herbal extracts containing : Athletes need to know if the forms of caffeine including extracts caffeine and other substances of ingredients are legal and safe. guarana seeds, kola nuts, and Yerba that may cause dizziness and Athletes should examine the : Nutrition Facts panel for the mate leaves. Some people who would other symptoms of central not ingest synthetic caffeine are nervous system dysfunction. total carbohydrate content as well as calories. apparently persuaded that herbal Protein stimulants are somehow healthier. : Because there is wide variability Protein is used as a fuel for in the Avoid the product if the evidence for claims is non- existent, incomplete, or sources and processing of these exercise, but in negligible amounts, so adding protein to a beverage herbs, it is nearly impossible to know unsubstantiated! containing adequate energy from : the exact amounts of caffeine or other If it sounds to good to be true, carbohydrate will provide no components of the plants that are chances are that it probably is! contained in the energy drinks. performance advantage for an athlete. Moreover, to ensure that the Athletes will always be attracted to It is also unlikely that adding protein to a carbohydrate-rich beverage products that claim to have will consumer has at least a psychological Goal Indoor • March 2 003 • 21