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Moussouami S I, Alongo Y R G, Kouassi J P, Mabika Nzoumba C, Bio Nigan I. Dietary Restriction in Elite Karatekas: Effect on Body Composition and Physical Performance. Ann Appl Sport Sci 2023; 11 (S1)
URL: http://aassjournal.com/article-1-1144-en.html
1- Sport, Health, and Evaluation Research Unit (UR/SSE), National Institute for Youth, Physical Education, and Sport (INJEPS), University of Abomey-Calavi (UAC), Porto-Novo, Benin. Laboratory of Physiology of Effort and Biomechanics (LPB), Higher Institute of Physical Education and Sport (ISEPS), Marien Ngouabi University, Brazzaville, Congo , simplicemoussouami@gmail.com
2- Laboratory of Physiology of Effort and Biomechanics (LPB), Higher Institute of Physical Education and Sport (ISEPS), Marien Ngouabi University, Brazzaville, Congo
3- Sport, Health, and Evaluation Research Unit (UR/SSE), National Institute for Youth, Physical Education, and Sport (INJEPS), University of Abomey-Calavi (UAC), Porto-Novo, Benin
Abstract:   (1392 Views)
Background. In weight-category sports, athletes regularly undertake weight-loss diets as competitions approach to lose weight quickly.
Objectives. This study aimed to evaluate the effects of dietary restriction on body composition and physical performance in young elite karatekas.
Methods. In a randomized design, 16 young karatekas volunteers (aged 20.14 ± 1.52 years) participated in this study, subdivided into two periods of 7 days each—one period of weight maintenance and one of food restriction. After anthropometric measurements, field tests aimed at assessing speed and acceleration, explosive power (counter-movement and triple standing jump), agility (T-tests), and aerobic endurance (intermittent yo-yo test 2) were performed. A 7-day food diary for each period (without and with food restriction) was used to determine nutritional intake.
Results. A significant decrease in body mass (p <0.05) was observed after the restriction period. A reduction in jumping power (p = 0.03), as well as a decrease in endurance capacity (p < 0.01), was observed. However, the agility test showed non-significant differences.
Conclusion. Based on these results, caloric restriction for rapid weight loss impairs athletes’ physical capacity and sports performance. Preventive measures against this phenomenon are necessary.
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• This study is considered important information for athletes who practice voluntary rapid weight loss using dietary restriction.
• This study also allows athletes and trainers to consider the dangers of this method of voluntary weight loss.

Type of Study: Original Article | Subject: Exercise, Training and Health
Received: 2022/07/15 | Accepted: 2022/09/10

1. Slater G, O'Connor H, Kerr A. Optimising Physique for Sports Performance, Best Practice Protocols for Physique Assessment in Sport. Spinger. 2018;27-36. [DOI:10.1007/978-981-10-5418-1_3] [PMID] [PMCID]
2. Gann JJ, Grant T M, La Bounty PM. Weight cycling: prevalence, strategies, and effects on combat athletes. Strength Cond. J. 2015;37(5):105-111. [DOI:10.1519/SSC.0000000000000168]
3. Reale R, Slater G, Burke LM. Weight Management Practices of Australian Olympic Combat Sport Athletes. Int. J. Sports Physiol. Perform. 2018;13:459-466. [DOI:10.1123/ijspp.2016-0553] [PMID]
4. Giannini Artioli G, Gualano B, Franchini E. Prevalence, magnitude, and methods of rapid weight loss among judo competitors. Med Sci Sports Exerc. 2010;42(3):436-442. [DOI:10.1249/MSS.0b013e3181ba8055] [PMID]
5. Artioli GG, Gualano B, Franchini E, Scagliusi FB, Takesian M, Fuchs M. Antonio Herbert Lancha J.R. Prevalence, Magnitude, and Methods of Rapid Weight Loss among Judo Competitors. Med. Sci. Sports Exerc. 2010;42:436-442. [DOI:10.1249/MSS.0b013e3181ba8055] [PMID]
6. Reale R, Cox GR, Slater G, Burke LM. Regain in Body Mass After Weigh-In is Linked to Success in Real Life Judo Competition. Int. J. Sport Nutr. Exerc. Metab. 2016;26:525-530. [DOI:10.1123/ijsnem.2015-0359] [PMID]
7. Filaire E., Maso F., Degoutte F., Jouanel P., Lac G. Food restriction, performance, psychological state and lipid values in judo athletes. Int J Sports Med. 2001;22(6):454-459. [DOI:10.1055/s-2001-16244] [PMID]
8. Moore B., King D., Kesl L., Feltmeyer T., Baldus P., Sharp R., Nespor J. Effect of Rapid Dehydration and Rehydration on Work Capacity and Muscle Metabolism during Intense Exercise in Wrestlers: 568. Med. Sci. Sports Exerc. 1992;24:S95. [DOI:10.1249/00005768-199205001-00569]
9. Barley O.R., Chapman D.W., Blazevich A.J., Abbiss C.R. Acute Dehydration Impairs Endurance Without Modulating Neuromuscular Function. Front. Physiol. 2018;9:1562. [DOI:10.3389/fphys.2018.01562] [PMID] [PMCID]
10. Kouassi JP, Kouame N, Tonon BA, Gouthon P, Nouatin BK, Tako AN. Effet of voluntary rapid weight loss during a two-week training camp on hydro-electrolytic parameters and performance of elite judo players in Côted'Ivoire. J Biol Chem Sci. 2019;13(7):3119-3130. [DOI:10.4314/ijbcs.v13i7.12]
11. MacDougall JD, Wenger HA. The purpose of physiological testing. In: MacDougall, JD, Wenger HA, Green HJ. (eds.): Physiological testing of the high-performance athlete. Champaign, IL, Human Kinetics. 1991;1-6.
12. Bozic P, Pazin N, Berjan B, Planic N, Cuk I. Evaluation of the field tests of flexibility of lower extremity: reliability, and concurrent and factorial validity. J Strength Cond Res. 2010;24(9): 2523-2531. [DOI:10.1519/JSC.0b013e3181def5e4] [PMID]
13. Mirkov D, Nedeljkovic A, Kukolj M, Ugarkovic D, Jaric S. Evaluation of the reliability of soccer-specific field tests. J Strength Cond Res. 2008;22(4):1046-1050. [DOI:10.1519/JSC.0b013e31816eb4af] [PMID]
14. Pauole K, Madole K, Garhammer J. Reliability and validity of the T-test as a measure of agility, leg power, and leg speed in college-aged men and women. J Strength Cond Res. 2000;14(4):443-450. https://doi.org/10.1519/1533-4287(2000)014<0443:RAVOTT>2.0.CO;2 https://doi.org/10.1519/00124278-200011000-00012 [DOI:10.1519/1533-4287(2000)0142.0.CO;2]
15. Zehr EP, Sale DG, Dowling JJ. Balistic movement performance in karate athlest. Med Sci Sports Excer. 1997;10:1366-1373. [DOI:10.1097/00005768-199710000-00014] [PMID]
16. Lee JB, Matsumoto I, Othman I, Yamauchi M, Taimura A, Kaneda E, et al. Coactivation of the flexor muscle as a synergist with the extensors during ballisticsfinger extension movement in trained kendo and karate athlets. Int J Sport Med. 1999;20: 7-11. [DOI:10.1055/s-2007-971083] [PMID]
17. Markovic G, Jaric S. Positive and negative loading and mechanical output in maximum vertical jumping. Med Sci Sports Exerc. 2007;39(10):1757-1764. [DOI:10.1249/mss.0b013e31811ece35] [PMID]
18. Nedeljkovic A, Mirkov DM, Bozic P, Jaric S. Tests of muscle power output: the role of body size. Int J Sports Med. 2009;30(2):100-106. [DOI:10.1055/s-2008-1038886] [PMID]
19. Markovic G, Dizdar D, Jukic I, Cardinale M. Reliability and factorial validity of squat and counter-movement jump tests. J Strength Cond Res. 2004;18(3): 551-555. https://doi.org/10.1519/1533-4287(2004)18<551:RAFVOS>2.0.CO;2 [DOI:10.1519/00124278-200408000-00028]
20. Bangsbo JF, Iaia M, Krustrup P. The yo-yo intermittent recovery test. A useful tool for evaluation of physical performance in intermittent sports. Sports Med. 2008;38(1): 37-51. [DOI:10.2165/00007256-200838010-00004] [PMID]
21. Kouassi JP, Gouthon P, Kouamé N, Agbodjogbé B, Nouatin B, Tako NA. Perceptions and motivation of top-level judokas from Côte d'Ivoire about practice of rapid weight loss. SAJRSPER. 2020;42(1): 35-45.
22. Santos JFDS, Takito MY, Artioli GG, Franchini E. Weight loss practices in Taekwondo athletes of different competitive levels. JER. 2016;12(3):202-8. doi:10.12965/jer.1632610. 305 [DOI:10.12965/jer.1632610.305] [PMID] [PMCID]
23. Seyhan S. Evaluation of rapid weight loss practices of taekwondo athletes and their effects. J Educ Train Study. 2018; 6(10): 213-8. [DOI:10.11114/jets.v6i10.3663]
24. Fortes LS, Costa BDV, Paes PP, Cyrino ES, Vianna JM, Franchini E. Effect of rapid weight loss on physical performance in judo athletes: Is rapid weight loss a help for judokas with weight problems? Int J Perform Anal. Sport. 2017;17:763-773. [DOI:10.1080/24748668.2017.1399323]
25. Artioli GG, Iglesias RT, Franchini E. Rapid weight loss followed by recovery time does not affect judo-related performance. J Sports Sci. 2010;28(1):21-32. [DOI:10.1080/02640410903428574] [PMID]
26. Horswill CA, Hickner RC, Scott JR, Costill DL, Gould D. Weight loss, dietary carbohydrate modifications, and high intensity, physical performance. Med Sci Sports Exerc. 1990;22(4):470-476. [DOI:10.1249/00005768-199008000-00009] [PMID]
27. Barley OR, Iredale F, Chapman DW, Hopper A, Abbiss C. Repeat effort performance is reduced 24 h following acute dehydration in mixed martial arts athletes. J Strength Cond Res 2018;32:2555-2561. [DOI:10.1519/JSC.0000000000002249] [PMID]
28. Casa DJ, Cheuvront SN, Galloway SD, Shireffs SM. Fluids needs for training, competition, and recovery in track-and-field athletes. Int J Sport Nutr Exerc Metab. 2019;29(2):175-80. [DOI:10.1123/ijsnem.2018-0374] [PMID]
29. Matthews JJ, Nicholas C. Extreme rapid weight loss and rapid weight gain observed in UK mixed martial arts athletes preparing for competition. Int J Sport Nutr Exerc Metab. 2016;27(2):122-9. [DOI:10.1123/ijsnem.2016-0174] [PMID]
30. Zhuo M, Li J, William JH. Sauna-induced fatal rhabdomyolysis. Kidney Int Rep. 2019;4(1):171-3. [DOI:10.1016/j.ekir.2018.08.008] [PMID] [PMCID]
31. Cheuvront SN, Kenefick RW, Montain SJ, Sawka MN. Mechanisms of aerobic performance impairment with heat stress and dehydration. J. Appl. Physiol. 2010;109:1989-1995. [DOI:10.1152/japplphysiol.00367.2010] [PMID]
32. Goulet, EDB. Effect of exercise-induced dehydration on endurance performance: Evaluating the impact of exercise protocols on outcomes using a meta-analytic procedure. Br. J. Sports Med. 2013;47:679-686. [DOI:10.1136/bjsports-2012-090958] [PMID]
33. Savoie FA, Kenefick RW, Ely B, Cheuvront SN, Goulet EDB. Effect of Hypohydration on Muscle Endurance, Strength, Anaerobic Power and Capacity and Vertical Jumping Ability: A Meta-Analysis. Sports Med. 2015;45:1207-1227. [DOI:10.1007/s40279-015-0349-0] [PMID]
34. Reale R, Slater G, Burke LM. Individualised dietary strategies for Olympic combat sports: acute weight loss, recovery and competition nutrition. Eur J Sport Sci. 2017;17:727-740. [DOI:10.1080/17461391.2017.1297489] [PMID]
35. Saltin B. Aerobic and anaerobic work capacity after dehydration. J of Appl Physiol. 1964;19(6):1114-1118. [DOI:10.1152/jappl.1964.19.6.1114] [PMID]

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