Work shop 1, 29 th Feb. 2016, 17:00 18:00 When do you take a meal during the table tennis tournament? Advice from the sports dietitian Michiyo KIMURA, Ph.D. 1),2) 1) Takasaki University of Health and Welfare 2) JTTA Sports Science and Medicine Committee Mizuho Adachi 2), Shiro Matsuo, M.D. 2)
When do you take a meal during the table tennis tournament? Advice from the sports dietitian Do you know the best way to take a meal during the table tennis tournament? Do you have any eating strategies to win the game? Can you conduct the best dietary strategies? How do you make strong body?
Contents 1 Food guide for athletes 2 The optimal pre, duringand after competition meals 3 Food environment in table tennis tournament 4 Future perspective
Contents 1 Food guide for athletes 2 The optimal pre, duringand after competition meals 3 Food environment in table tennis tournament 4 Future perspective
Food Guide For Athletes Place mat (six dishes) Japan Sports Association Sports Shokuiku Project
Breakfast and supper of junior player A
Breakfast and supper of junior player B
Physical fitness levels A team players B team players A team players Abdominal muscle test Sit and reach teat Softcall throw 5 4 3 2 1 0 Standing broad jump 50m sprint time B team players Repetitive sideways jump 20m shullte run test
Contents 1 Food guide for athletes 2 The optimal pre, duringand after competition meals 3 Food environment in table tennis tournament 4 Future perspective
Glycogen and Energy Starch Complex carbohydrate Endurance Recovery Glucose Glycogen Energy Concentration
When and what players should eat 6:00 7:00 before competition first game 10:00 3 4 hours Break fast on the day of the competition High carbohydrate diet Liver and muscle glycogen Exercise performance
The effect of the time of carbohydrate intake on muscle glycogen recovery after exercise. Glycogen synthesis (μmol/g/wet wt) 20 18 16 14 12 10 8 6 4 2 0 Immediately after exercise CHO(2g/kg/BW) 2hour after exercise CHO (2g/kg/BW) JL Ivy et al. 1988 Journal of Applied Physiology, 64, p 1480 1485 Muscle glycogen synthesis after exercise effect of time of carbohydrate ingestion
How much foods athlete should take to restore the glycogen levels in muscles immediately after exercise Body weight Steamed rice White bread Pasta = 150 200g = 60g = 240 260g Male 50 70kg 300 425g 110 150g 160 230g Female 40 60kg 240 360g 85 130g 130 200g
Timing of supplementation before and after competition 10:00 12:00 13:30 16:30 20:00 How long players have between the matches. More than 30min More than 60min More than 120min Not to eat much Energy gel Sports drink Fruits Energy bar Sponge cake Light meal (Rice ball) Sandwich
What players should intake in order to recover the muscle glycogen as fast as possible after match.
J Appl Physiol., 72, 1992 Carbohydrate protein complex increases the rate of muscle glycogen recover after exercise Muscle glycogen resynthesis rate (μmol/g protein/4h) 200 150 100 50 0 p<0.05 p<0.05 p<0.05 CHO-PRO CHO PRO CHO: 112g/2h (0.77g/kg/h) PRO: 40.7g/2h(0.28g/kg/h)
Muscle glycogen concentrations immediately after exercise oral administration of glucose and fat complex Muscle glycogen concentration (μmol/g tissue) 30 25 20 15 10 5 0 CHO p<0.05 CHO FAT Exercise: 30min swimming Immediately after exercise CHO(2mg/g BW) CHO+Fat (2mg/g BW ) After 60min muscle glycogen concentration Concentration immediately after exercise (Terada&Urashima 2015)
CHO (1g/body weight) + Protein and/or Fat Rapid muscle glycogen recovery after exercise
Contents 1 Food guide for athletes 2 The optimal pre, duringand after competition meals 3 Food environment in table tennis tournament 4 Future perspective
Food environment Dining area Food sanitation (hygiene) Convenience Nutrition education Eating schedule Meal serving Nutrition balance Safety Timing Functional Social support Instrumental Informational Emotional Appraisal Environment Norms Customs and Rules of team Structural Social support Family members Dietitian Team mate Director Coach Doctor Trainer
Background Table tennis players usually have to repeat several matches in a day in international tournament. compete late into the night Especially junior players are still in the stage of growth & development So players are required to have adequate nourishment & rest.
purpose The purposes of this study were therefore to survey current food environments in junior tournament to gather information to make new guideline for junior players on food environments in international competition.
Methods We accompanied the Japanese cadet and junior team (13 players) at one of the junior and cadet open, which was held in 2015. Match schedules and rest time between the matches were surveyed. In addition, we did interview survey about dietary intake state of the Japanese junior players.
Results Numbers of Matches Average 19±5 Day Player A B C D E F G H I J K L M 1 4 5 7 3 3 3 6 5 2 6 2 2 6 2 2 2 1 2 5 2 6 5 3 3 8 8 5 3 5 3 5 4 6 2 4 7 2 4 8 7 4 3 5 3 2 1 2 6 1 4 3 5 3 5 8 8 9 6 6 4 Total matches 23 25 24 19 24 16 21 10 15 20 13 18 14 male female cadet junior
Results Numbers of Games Average 74±17 Player Day A B C D E F G H I J K L M 1 16 20 28 16 13 12 25 22 10 22 7 7 23 2 12 11 4 12 25 8 28 24 15 3 33 28 20 12 16 13 20 14 21 9 18 24 6 4 28 26 15 12 15 12 7 3 10 26 4 16 11 5 10 16 31 31 34 23 20 15 Total 87 90 94 83 89 64 84 39 66 80 57 71 55 games male female cadet junior
Estimated Energy Expenditure during matches Player A B C D E F G H I J K L M 1 571 718 1122 564 430 454 1007 969 444 811 260 245 790 2 423 364 151 484 1110 295 1039 841 515 3 1178 1006 801 423 529 491 806 616 932 332 668 841 206 4 999 934 601 423 496 454 282 132 444 958 148 561 378 5 357 575 1242 1093 1125 869 806 553 Day Ave EE Average 645±137kcal 776 808 942 585 589 484 677 572 733 590 529 622 472 male female cadet junior
Rest Time Between the Matches (E Player Day 5) Match Number Start Time Match Type Number of Games Match Time Rest Time Between the Matches 1 2 3 4 5 6 7 8 9 9:00 10:30 11:30 12:15 13:45 14:45 15:45 16:45 17:30 CD CS CS CD CD CS CS CD CS 4 3 3 3 4 3 4 4 5 28 21 21 21 28 21 28 28 35 62 39 24 69 32 39 32 17 Average Time = Only 40 min CD=Cadet Doubles CS=Cadet Singles
Time Schedule of the Circuits (Start and End Time) Number Date Day 1 Day 2 Day 3 Day 4 Day 5 1 Aug 27 30 10:00 20:00 10:00 18:30 10:00 20:30 10:00 18:00 2 Aug 25 29 9:30 20:30 9:30 18:30 9:00 21:00 9:00 20:15 10:00 19:00 3 Aug 12 15 10:00 19:00 9:00 18:30 9:00 18:45 9:00 18:40 4 Aug 7 11 10:00 21:00 10:00 20:15 9:00 22:00 10:00 20:00 10:00 21:00 5 Aug 6 9 9:00 19:00 9:00 18:50 9:00 19:15 10:00 17:00 6 Aug 5 9 10:00 20:30 10:00 21:00 9:30 22:05 9:30 22:15 10:00 18:00 7 Jun 24 28 9:00 21:30 9:00 19:00 9:00 20:40 9:00 20:20 10:00 18:00 8 Jun 19 21 9:25 21:10 9:30 19:55 10:00 18:15 9 Jun 8 12 10:00 22:00 9:00 21:00 9:00 21:00 9:00 21:00 9:30 20:00 10 May 27 31 9:00 20:15 9:00 21:00 9:00 22:30 9:00 22:30 9:00 18:30 11 May 21 24 10:00 20:00 10:00 20:30 10:00 20:30 9:00 19:30 12 May 13 17 10:00 20:00 10:00 20:00 10:00 20:50 10:00 19:10 10:00 18:30 13 May 11 14 9:00 20:00 9:00 20:30 9:00 19:45 9:00 17:45 14 May 6 10 9:00 20:00 9:00 20:30 9:00 21:15 9:00 20:30 9:00 20:30 15 Apr 15 19 9:00 20:40 9:30 21:30 9:00 22:15 9:00 22:30 9:00 19:00 16 Apr 3 6 9:00 17:30 9:00 17:45 9:00 20:00 9:00 18:15 17 Apr 3 7 9:30 21:00 9:00 19:00 9:00 21:00 9:30 20:15 9:30 20:00 18 Apr 1 5 9:00 20:50 9:00 18:15 9:00 20:30 9:00 20:30 9:00 21:30 19 Mar 22 26 9:00 20:30 10:00 20:00 9:00 21:30 9:00 21:30 10:00 20:00 20 Mar 4 8 9:00 20:00 9:00 19:45 9:00 20:30 9:00 19:30 9:00 21:15 21 Feb 28 Mar 3 9:00 20:30 9:00 20:30 9:00 21:00 9:00 17:30 22 Feb 18 22 9:00 19:15 9:00 19:45 9:00 21:40 9:00 18:50 23 Feb 11 15 9:00 22:00 10:00 19:00 9:00 20:10 9:00 21:00 9:00 21:00 24 Feb 3 7 10:00 22:00 10:00 21:00 10:00 20:00 9:00 20:00 9:30 20:00
Conclusion Since the match schedules seem to be very tight in international tournament, players sometime have difficulty in having adequate dietary intake and have tendency to be energy deficient.
Contents 1 Food guide for athletes 2 The optimal pre, duringand after competition meals 3 Food environment in table tennis tournament 4 Future perspective
Future Perspective 1. It is necessary for players to finish the last match until 20:00 p.m. If they will have to compete next day, they have to finish the last match earlier. 2. Enough rest time should be scheduled.
Future Perspective The organizer should 3. locate the dining hall close to competition hall. It is desirable for players to be able to walk within 10 min to dining hall. 4. establish the cafeteria in the competition hall if players are not able to have the meal time in the schedule and /or to finish the last match until 20:00 p.m.
Contents 1 Food guide for athletes 2 The optimal pre, duringand after competition meals 3 Food environment in table tennis tournament 4 Future perspective
Thank you very much! kimura@takasaki u.ac.jp