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1 © Learning ZoneXpress
2 Think about it You are pulling an “all-nighter.” How are you going to stay awake?
3 © Learning ZoneXpress Caffeine A natural chemical found in tea leaves, coffee beans, cocoa beans, and kola nuts Found in many common foods and drinks including: Coffee Soft drinks Tea Chocolate Energy drinks Medicines Classified as a drug Caffeine is a stimulant and can be addictive
4 © Learning ZoneXpress Caffeinated Candy Chocolate naturally has caffeine Companies creating caffeinated candy: Breath mints Gum Chocolate covered coffee beans
5 © Learning ZoneXpress Caffeine: How Does it Work? Absorbed in the stomach and the intestine Stimulates brain activity Physiologic effects: Increase blood pressure Increase pulse Increase stomach acid production Fat stores break down Fatty acids released into blood stream
6 © Learning ZoneXpress Too Much Caffeine Insomnia Restlessness Increased heart rate Increased blood pressure Abnormal heart rhythm Anxiety/ nervousness Irritability
7 © Learning ZoneXpress Caffeine Sensitivity Several factors influence sensitivity: Body Mass History of caffeine use Stress
8 © Learning ZoneXpress Caffeine Withdrawal Withdrawal symptoms: Headache Tiredness Mood swings Jittery feeling Difficulty concentrating
9 © Learning ZoneXpress Prevent Withdrawal Symptoms Taper your caffeine intake Eat small, frequent meals Exercise Get enough sleep
10 © Learning ZoneXpress Caffeine Comparison Drink Caffeine Energy drink 72 - 150 mg Brewed coffee 134 - 240 mg Tea 48 - 175 mg Soft drink 22 - 46 mg
11 © Learning ZoneXpress Alternatives to Caffeine Carbonated Beverages: Lemon-lime soda Orange soda Root beer Decaffeinated coffee and tea Candies: Caramels Licorice Gum drops CAFFEINE
12 © Learning ZoneXpress Caffeine and Health Studies have found no substantial evidence linking caffeine to these conditions: Blood Pressure Cardiac Arrhythmias Pregnancy Osteoporosis Cancer
13 © Learning ZoneXpress Caffeine and Hyperactivity Average intake ages 5-18: 35-40 mg/day No evidence caffeine contributes to hyperactivity May have calming effect
14 © Learning ZoneXpress What about fluid balance? Fluid balance Fluid loss = fluid taken in Does caffeine influence fluid balance? No dehydration and GI upset Slow re-hydration after exercise
15 © Learning ZoneXpress Caffeine: Ergogenic Aid? Ergogenic: increases muscular work capacity and overall performance Caffeine can be ergogenic at low to moderate doses Caffeine may increase endurance time Individual variation, try in training first
16 © Learning ZoneXpress Would you drink a beverage that claims to… …improve performance? …increase concentration? …improve reaction speed? …increase metabolism?
17 © Learning ZoneXpress Statistics 7.6 million (approximately 31%) of U.S. teenagers say they drink energy drinks. In 2006, $2.3 billion was spent by teens and young adults on energy drinks
18 © Learning ZoneXpress Energy Drinks Canned or bottled carbonated beverages with high amounts of sugar, caffeine, herbal stimulants and supplements Marketed with claims of: Increased endurance Strength and power Weight loss Feelings of euphoria
19 © Learning ZoneXpress History of Energy Drinks Originated in Asia and Europe in the 1960s First appeared in the U.S. in the 1980s with Jolt Cola
20 © Learning ZoneXpress A Common Misconception Sports drinks and energy drinks are not the same. Energy Drinks Caffeine filled High concentration of sugar Contain herbal stimulants Sports Drinks Fluid balance Electrolyte concentration Provide energy Isotonic
21 © Learning ZoneXpress Energy Drinks and the Athlete No energy drink can make you a better athlete Sugar, caffeine, and stimulants may cause an athlete to crash There is no substitute for hard work, good training, healthy diet, and adequate rest
22 © Learning ZoneXpress Do you know what you are drinking? Taurine Guarana B-Vitamins Glucuronolactone Ginseng Yerba Mate Green Tea Cordyceps Aloe Vera Leaf Carnitine Creatine Inositol Ginkgo Biloba Bitter Orange Milk Thistle Goji Berries Garcinia Cambogina Rind ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
23 © Learning ZoneXpress What’s inside? Guarana A shrub that grows in South America Extracts of the plant, fruit, or seed A stimulant and flavoring 1 gram of guarana contains as much caffeine (40 mg) as a medium strength cup of coffee
24 © Learning ZoneXpress What’s inside? Taurine Believed to enhance the effects of caffeine Involved in a number of physiological processes including neuronal excitability Energy drinks contain up to 10 times the usual intake from diet
25 © Learning ZoneXpress What’s inside? Glucuronolactone “Increases feelings of well- being” A normal, human metabolite formed from glucose When glucuronolactone is taken orally, it is rapidly absorbed, metabolized, and excreted 600mg/can, normal human intake 250mg/day
26 © Learning ZoneXpress What’s inside? B-Group Vitamins B-vitamins include: Thiamine (B1) Riboflavin (B2) Niacin (B3) Pyrodoxine (B6) Claims to burn fat Excess B-vitamins are excreted in urine
27 © Learning ZoneXpress Energy Drink Regulation Energy drinks are currently unregulated in the United States The Food and Drug Administration (FDA) requires beverage manufacturers to list the presence of caffeine on the label, but not the amount of caffeine in the product Herbs and supplements added to energy drinks are not strictly regulated by the FDA HOW MUCH?
28 © Learning ZoneXpress Review What factors influence caffeine sensitivity? Body mass, history of caffeine use, stress level Name some beverages that are caffeine free. Lemon-lime soda, orange soda, root beer, water, milk, fruit juice, etc.
29 © Learning ZoneXpress Review What are some marketing claims of energy drinks? Increased endurance, strength and power, weight loss, feelings of euphoria Why are energy drinks not a good choice for athletic events? The amount of caffeine in energy drinks is dehydrating and the high sugar content can cause an athlete to “crash”
30 © Learning ZoneXpress Review Caffeine stimulates the central nervous system which makes us feel more awake and alert Energy drinks have a high caffeine and sugar content Herbal supplements in energy drinks are not regulated and are not guaranteed safe
31 © Learning ZoneXpress Web Resources Caffeine Awareness: www.caffeineawareness.orgwww.caffeineawareness.org American Beverage Association: www.ameribev.orgwww.ameribev.org Energy Drinks and Food Bars: Power or Hype?: http://www.kidshealth.org/teen/food_fitness/nutritio n/energy.html http://www.kidshealth.org/teen/food_fitness/nutritio n/energy.html Caffeine: http://www.kidshealth.org/teen/nutrition/general/caff eine.html http://www.kidshealth.org/teen/nutrition/general/caff eine.html
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