Chocolate Milk vs Sports Drinks


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Effects of chocolate milk vs sports drinks such as Gatorade in recovery after exercise.

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Chocolate Milk vs Sports Drinks

  1. 1. The Effects of Sports Drinks Vs. Chocolate Milk During Recovery<br />Matthew Patjawee<br />Shanna Porcari<br />
  2. 2. Why is this Significant?<br />Know what may be best/healthy for your own body.<br />Athletic trainers and Coaches <br />– Know what’s best for your athletes and their performance.<br />Pre-professional and Exercise and fitness – Understand what to suggest to patients when discussing exercise prescription and rehabilitation programs.<br />
  3. 3. Overview<br />Effects of sports drinks on the body<br />Nutrient comparison<br />Gatorade Study<br />Chocolate Milk Study<br />Conclusion<br />
  4. 4. Chocolate Milk vs. Gatorade<br />
  5. 5. Gatorade: What’s in it?<br />Gatorade is a 6% carbohydrate-electrolyte sports beverage <br />Along with putting water back into your body sports drinks put in:<br />-   electrolytes<br />-   sodium<br />-   potassium<br />-   chloride<br />All of these minerals which are lost through sweat when we exercise<br />
  6. 6. Palatability and voluntary intake of sports beverages, diluted orange juice, and water during exercise<br />Authors: Passe, Horn, Stofan, &Murray <br />Year: 2009<br />
  7. 7. Purpose<br />The researchers investigated what interacting factors affect fluid intake during and after exercise.<br /> (Passe, Horn, Stofan, & Murray, 2009)<br />
  8. 8. Methods<br />Subjects: Fifty triathletes and runners (34 males and 16 females) <br />Beverages:<br />- Diluted orange juice (DOJ) <br />- Homemade 6% carbohydrate-electrolyte sports beverage (HCE)<br />- Commercial 6% carbohydrate-electrolyte sports beverage (CCE)<br />- Evian water (W)<br />all beverages were served in 16 oz. opaque bottles<br /> (Passe, Horn, Stofan, & Murray, 2009)<br />
  9. 9. Procedure<br />Participants were in the lab for five sessions:<br />-   first session was an orientation<br />-   four sessions: 75 minutes of exercise at 80-85% max. age predicted HR<br />During each exercise session they were only given one of the four beverages<br />Up to 15 participants exercised at a time and they were discouraged from talking with one another.<br />Twice during the exercise session and after participants were given access to the drinks for a 60-sec break.<br /> (Passe, Horn, Stofan, & Murray, 2009)<br />
  10. 10. Measurements<br />Fluid intake was weighing the bottles before and after consumption<br />Dehydration was determined by taking nude body weights pre- and post- exercise and expressing the difference in a percentage<br />Taste-related measure were obtained right after the two drink breaks.<br /> (Passe, Horn, Stofan, & Murray, 2009)<br />
  11. 11. Measurements<br />Liking of beverage overall, flavor, sweetness were measured by a 9-point hedonic category scale.  Extremely like to Extremely Dislike<br />Descriptive characteristics/perceived intensity were measured using a 100-point descriptive line scale<br />Just About Right measure were taken using a 5-point category scale<br /> (Passe, Horn, Stofan, & Murray, 2009)<br />
  12. 12. Results<br />The participants who drank the Commercial sports beverage (CCE):<br />-   highest levels of fluid intake<br />-   least dehydrated<br />-   highest overall accepted beverage<br />-   highest flavor approval<br />-   just the right amount of flavor content<br /> (Passe, Horn, Stofan, & Murray, 2009)<br />
  13. 13. Conclusion<br />Flavor is very important to get athletes to voluntarily hydrate themselves during and after exercise to prevent “voluntary dehydration.”<br />The commercial sports drink (Gatorade) met the most needs in taste:<br />-   sweetness<br />-   saltiness<br />-   overall flavor<br />It was also consumed in the highest quantities in comparison to the other available drinks.<br /> (Passe, Horn, Stofan, & Murray, 2009)<br />
  14. 14.
  15. 15. Improved endurance capacity following chocolate milk consumption compared with two commercially available sports drinks<br />Authors: Thomas, Morris, & Stevenson<br />Year: 2009<br />(<br />
  16. 16. Participants<br />Consisted of Nine male trained cyclists<br />Mean age – 25<br />Mean weight – 73kg<br />Mean Maximal Oxygen Uptake (VO2max)<br /> – 4.3 L/min <br />Mean Associated Power (Pmax) <br />– 33 W<br /> All completed a pre exercise medical screening. <br />(Thomas, Morris, & Stevenson, 2009)<br />
  17. 17. Procedures<br />Reported to the lab between 8am and 9am after an overnight fast. <br />Refrain from any strenuous exercise and arrive in a fully rested and hydrated state.<br />Replicate their dietary intake 24 hours before each session.<br />All testing was used using a cycle ergometer.<br />Complete an incremental exercise test followed by 3 experimental trials.<br />(Thomas, Morris, & Stevenson, 2009)<br />
  18. 18. Incremental Exercise Test<br />Self Determined Warm up<br />Participants cycled at a chosen pedal cadence (85-100 r/min) at a power output of 100W increased by 50W every 2 min. until exhaustion.<br />Instructed to maintain pedal cadence through test.<br />Chosen cadence was used on all other subsequent test occasions. <br />(Thomas, Morris, & Stevenson, 2009)<br />
  19. 19. Experimental Trials<br />3 experimental trials separated by 1 week.<br />Consumed chocolate milk, fluid replacement (Gatorade), or Carbohydrate replacement (Endurox R4)<br />Volume of Carbohydrate Replacement drink was calculated as 1g of protein per kg of body weight.<br />Isovolumetric amount of fluid replacement drink.<br />Chocolate milk calculated to be identical to carbohydrate replacement drink.<br />Participants were allowed to drink as much water as they felt needed during the trials.<br />(Thomas, Morris, & Stevenson, 2009)<br />
  20. 20. Glycogen-depletion Trial<br />Trial consisted of alternating 2 minute intervals (60-90% Pmax) and recovery bouts (50% Pmax).<br />Began cycling at 90% Pmax alternating every 2 minutes until they could no longer maintain their chosen cadence. <br />Intensity would decrease 10% every time their cadence fell 10 r/min over a 30s time period.<br />Trial ended when participants could no longer maintain their chosen r/min at 60% Pmax.<br />(Thomas, Morris, & Stevenson, 2009)<br />
  21. 21. Recovery Period<br />Participants rested in lab for 4 hour recovery period. <br />Within 60s and at 2 hours into the recovery after glycogen-depletion trial, participants were given a recovery drink.<br />Monitored psychological responses to drinks every 30 min.<br />Survey consisting on 11 mood and appetite questions.<br />(Thomas, Morris, & Stevenson, 2009)<br />
  22. 22. Endurance Capacity Trial<br />Following the recovery period participants performed a cycle to exhaustion at 70% Pmax.<br />Heart Rate recorded every 5 minutes.<br />Instructed to stay seated during the trial.<br />If participant fell more than 10 r/min for 20s they were given a warning. Second fault resulted in termination of trail then time was recorded.<br />(Thomas, Morris, & Stevenson, 2009)<br />
  23. 23. Results<br />No differences in exercise time for initial glycogen depletion cycle. <br />Analysis reveled a main effect on the time in the endurance capacity cycle.<br />Chocolate Milk – 32 min<br />Fluid Replacement – 23 min<br />Carbohydrate Replacement- 21 min<br />(Thomas, Morris, & Stevenson, 2009)<br />
  24. 24. Acute Effects of Chocolate Milk and a Commercial Recovery Beverage on Postexercise Recovery Indices and Endurance Cycling Perform<br />Authors: Pritchett, Bishop, Pritchett, Green & Katica<br />Year: 2009<br />
  25. 25. Purpose<br />To compare chocolate milk with a isocaloric protein/carbohydrate equivalent beverage as a recovery aid.<br />
  26. 26. Methods<br />Approach: Randomized, Repeat-Measure crossover design<br />Subjects: 10 regional level cyclist and triathletes<br />-   minimum of 2 years of involvement in endurance sports<br />-   minimum of 6 training-hours per week  <br />Beverages:<br />-   Low Fat Chocolate Milk (CHOC)<br />-   EnduroxR4 chocolate (CRB)<br />
  27. 27. Conclusion<br />The chocolate milk was just as effective as the Endurox.<br />Ten out of 10 participants preferred the taste of the chocolate. <br />Chocolate milk has appeal as a recovery aid because it is relatively inexpensive and readily available.<br />
  28. 28. Gatorade vs. Chocolate Milk Conclusion<br />Gatorade, based on taste, encourages athletes to hydrate themselves more adequately in comparison to water and other available drinks.<br />However, chocolate milk provides protein along with additional vitamins and minerals which has been proven to help aid in recovery. <br />
  29. 29. Conclusion<br />Natures Recovery Drink<br />
  30. 30. References<br />Passe, D., Horn, M., Stofan, J., & Murray, R. (2004). Palatability and voluntary intake of sports beverages, diluted orange juice, and water during exercise. International Journal of Sports Nutrition and Exercise Metabolism. 14, 272-284.<br />Pritchett, K., Bishop, P., Pritchett, R., Green, M., & Katica, C. (2009) Acute effects of chocolate milk and commercial recovery beverage on postexercise recovery indices and endurance cycling performance. Applied Physiology, Nutrition & Metabolism. 34(6) 1017-1022. doi:10.1139/H09-104<br />Thomas, K., Morris P., & Stevenson, E. (2009). Improved endurance capacity following chocolate milk consumption compared with 2 commercially available sports drinks. Applied physiology nutrition metabolism, 34, 78-82.<br />
  31. 31. Discussion<br />What do you normally drink after a work out?<br />
  32. 32. Discussion<br />Have any of you heard of chocolate milk being used as a recovery aid after exercise?<br />
  33. 33. Discussion<br />Do you feel that the study of sports drinks are important in our field as Kinesiologists?<br />
  34. 34. Discussion<br />Would you consider giving chocolate milk to your children after a sports practice or event compared to Gatorade? <br />
  35. 35. Discussion<br />What do you think may be some of the downsides of chocolate milk?<br />
  36. 36. Discussion<br />Do you think chocolate milk may have a future in the fitness retail market?<br />