Macronutrient intake and energy availability in young male elite cyclists: the importance of adequate CHO intake CHO intake in young elite cyclists
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Keywords
energy availability, carbohydrate intake, cyclists, inflammation
Abstract
Aims: Macronutrient intake before, during and after exercise may influence performance and inflammatory responses in elite athletes. In this context, we analyze the adequacy of nutritional status, daily energy and macronutrient intake as well as intake during and after acute training, energy availability (EA) and inflammatory response after acute training associated with carbohydrate intake (CHO) in ten young male elite cyclists. Methods: Ten Slovenian competitive cyclist, aged between 15 and 30 years participated in this study. Energy intake (EI) and macronutrient intake were assessed using 3-day dietary protocols. Venous blood samples were collected before and after acute exercise to analyse serum biochemical parameters, as well as pro-inflammatory (CRP, IL-6 and TNF-α) and anti-inflammatory (adiponectin) cytokines. Results: The average macronutrient composition of daily EI was 6.1 g/kg body mass (BM) of CHO, 1.7 g/kg BM of protein, and 29% EI fat, and in most cases did not meet exercise intensity recommendations. Less than 50% of all participants consumed sufficient CHO daily and during exercise (mean intake was 6.1 g/kg BM and 32g/h, respectively). Protein intake was the only category in which most participants (70%) met the recommended daily amounts (1.7 g/kg BM) and the amounts during and after exercise (0.08 g/kg BM and 0.5 g/kg BM). Fat intake during (15% EI meal) and immediately after exercise (32% EI meal) exceeded the recommended amount and less than 40% of all participants adhered. EI was below estimated requirements (45 kcal/kg BM) and most of our participants had subclinical EA (35 kcal/kg FFM). We observed a positive correlation between daily CHO and EA (p=0.024) and serum ferritin (p=0.014). Finally, adequate CHO intake during and after exercise reduces pro-inflammatory IL -6. Conclusion: Young male elite cyclists did not meet energy demands and specific macronutrient requirements. Inadequate carbohydrate intake, low EA, and ferritin concentrations may exacerbate inflammation after acute exercise. These findings may have both short- and long-term implications for the health and performance of young cyclists.
References
2. Nepocatych S, Balilionis G, O'Neal EK. Analysis of dietary intake and body composition of female athletes over a competitive season. Monten J Sports Sci Med 2017;6(2):57-65. DOI: 10.26773/mjssm.2017.09.008
3. Baker LB, Heaton LE, Nuccio RP, Stein KW. Dietitian-observed macronutrient intakes of young skill and team-sport athletes: adequacy of pre, during, and post exercise nutrition. Int J Sport Nutr Exerc Metab 2014;24(2):166-176. DOI: 10.1123/ijsnem.2013-0132
4. Coutinho LAA, Porto CPM, Pierucci APTR Critical evaluation of food intake and energy balance in young modern pentathlon athletes: a cross-sectional study. J Int Soc Sports Nutr 2016;13(1):1-8.
5. Viner RT, Harris M, Berning JR, Meyer NL. Energy availability and dietary patterns of adult male and female competitive cyclists with lower than expected bone mineral density. Int J Sport Nutr Exerc Metab 2015;25(6):594-602. DOI: 10.1123/ijsnem.2015-0073
6. Burke LM, Cox GR, Cummings NK, Desbrow B. Guidelines for daily carbohydrate intake: do athlets achive them? Sports Med 2001;31(4):267-299. DOI: 10.2165/00007256-200131040-00003
7. Impey SG, Hearris MA, Hammond KM, Bartlett JD, Louis J, Close GL, Morton JP. Fuel for the work required: a theoretical framework for carbohydrate periodization and the glycogen threshold hypothesis. Sports Med 2018;48(5):1031-1048. DOI: 10.1007/s40279-018-0867-7
8. Muros JJ, Sánchez-Muñoz C, Hoyos J, Zabala M. Nutritional intake and body composition changes in a UCI World Tour cycling team during the Tour of Spain. Eur J Sport Sci 2019; 19(1):86-94.
9. Thomas DT, Erdman K A, Burke LM. American college of sports medicine joint position statement. nutrition and athletic performance. Med sci sports exerc 2016;48(3): 543-568. DOI: 10.1249/MSS.0000000000000852
10. Burke LM, Hawley JA, Wong SH, Jeukendrup AE. Carbohydrates for training and competition. J Sports Sci 2011; 29(01):S17–S27. DOI: 10.1080/02640414.2011.585473
11. Johnson RJ, Murray R. Fructose, exercise, and health. Curr Sports Med Rep 2010;9(4): 253-258. DOI: 10.1249/JSR.0b013e3181e7def4
12. Febbraio MA, Steensberg A, Keller C, Starkie RL, Nielsen HB, Krustrup P, et al. Glucose ingestion attenuates interleukin‐6 release from contracting skeletal muscle in humans. J Physiol 2003;549(2): 607-612. DOI: 10.1113/jphysiol.2003.042374
13. Villarino AV, Huang E, Hunter CA. Understanding the pro- and anti-inflammatory properties of IL-27. J Immunol 2004;173(2):715-720. DOI: 10.4049/jimmunol.173.2.715
14. Sim M, Dawson B, Landers G, Wiegerinck ET, Swinkels DW, Townsend MA, et al. The effects of carbohydrate ingestion during endurance running on post-exercise inflammation and hepcidin levels. Eur J Appl Physiol 2012;112(5):1889-1898. DOI: 10.1007/s00421-011-2156-0
15. McClung JP, Martini S, Murphy NE, Montain SJ, Margolis LM, Thrane I, et al. Effects of a 7-day military training exercise on inflammatory biomarkers, serum hepcidin, and iron status. Nutr J 2013;12(1):1-4. DOI: 10.1186/1475-2891-12-141
16. Chan MH, McGee SL, Watt MJ, Hargreaves M, Febbraio MA. Altering dietary nutrient intake that reduces glycogen content leads to phosphorylation of nuclear p38 MAP kinase in human skeletal muscle: association with IL-6 gene transcription during contraction. FASEB J 2004;18(14):1785-1787. DOI: 10.1096/fj.03-1039fje
17. Nemeth E, Tuttle MS, Powelson J, Vaughn MB, Donovan A, Ward DM, et al. Hepcidin regulates cellular iron efflux by binding to ferroportin and inducing its internalization. Science 2004; 306(5704):2090-2093. DOI:10.1126/science.1104742
18. Vermorel M. Measurements of energy intakes and energy expenditures in children and adolescents of high-level of training. Cahiers de Nutrition et de Dietetique 2004;39:33–40
19. Ainsworth BE, Haskell WL, Herrmann SD, Meckes N, Bassett Jr DR, Tudor-Locke C, et al. 2011 Compendium of Physical Activities: a second update of codes and MET values. Med Sci Sports Exerc 2011;43(8):1575-1581. DOI: 10.1249/MSS.0b013e31821ece12
20. Sundgot-Borgen J, Meyer NL, Lohman TG, Ackland TR, Maughan RJ, Stewart AD, Müller W. How to minimise the health risks to athletes who compete in weight-sensitive sports review and position statement on behalf of the Ad Hoc Research Working Group on Body Composition, Health and Performance, under the auspices of the IOC Medical Commission. Br J sports med 2013; 47(16):1012-1022. DOI: 10.1136/bjsports-2013-092966
21. Vogt S, Heinrich L, Schumacher YO, Grosshauser M, Blum A, König D. et al. Energy intake and energy expenditure of elite cyclists during preseason training. Int J Sport Med 2005;26(8):701–706. DOI:10.1055/s-2004-830438
22. Geesmann B, Gibbs JC, Mester J, Koehler K. Association between energy balance and metabolic hormone suppression during ultra-endurance exercise. Int J Sports Physiol Perform 2017;12(7):984–989. DOI: 10.1123/ijspp.2016-0061
23. Heikura IA, Quod M, Strobel N, Palfreeman R, Civil R, Burke L M. Alternate-day low energy availability during Spring Classics in professional cyclists. Int J Sports Physiol Perform 2019;14 (9):1233–1243. DOI: 10.1123/ijspp.2018-0842
24. Burke LM, Hawley JA, Jeukendrup A, Morton JP, Stellingwerff T, Maughan RJ. Toward a common understanding of diet-exercise strategies to manipulate fuel availability for training and competition preparation in endurance sport. Int J Sport Nutr Exerc Metab 2018;28 (5):451–463. DOI: 10.1123/ijsnem.2018-0289
25. Stellingwerff T, Cox GR. Systematic review: Carbohydrate supplementation on exercise performance or capacity of varying durations. Appl Physiol Nutr Metab 2014;39(9):998–1011. DOI: 10.1139/apnm-2014-0027
26. Vitale K, Getzin A. Nutrition and supplement update for the endurance athlete: review and recommendations. Nutrients 2019;11(6):1289. DOI: 10.3390/nu11061289.
27. Rehrer NJ, Hellemans IJ, Rolleston AK, Rush E, Miller BF. Energy intake and expenditure during a 6-day cycling stage race. Scand J Med Sci Sports 2010;20(4):609-618. DOI: 10.1111/j.1600-0838.2009.00974.x
28. Sanches-Munoz C, Zabala M, Muros JJ. Nutritional intake and anthropometric changes of professional road cyclists during a 4-day competition. Scand J Med Sci Sports 2016;26(7):802-808. DOI: 10.1111/sms.12513
29. Muros JJ, Sánchez-Muñoz C, Hoyos J, Zabala M. Nutritional intake and body composition changes in a UCI World Tour cycling team during the Tour of Spain. Eur J sport Sci 2019;19(1):86-94. DOI: 10.1080/17461391.2018.1497088
30. Podlogar T, Wallis GA. Impact of post-exercise fructose-maltodextrin ingestion on subsequent endurance performance. Front Nutr 2020; 7:82. DOI: 10.3389/fnut.2020.00082
31. Sánchez-Benito JL, Soriano ES The excesive intake of macronutrients: does it influence the sportive performances of young cyclists?. Nutricion hospitalaria 2007;22(4):461-470.
32. Garcia-Roves PM, Terrados N, Fernandez SF, Patterson AM. Macronutrients intake of top level cyclists during continuous competition-change in the feeding pattern. Int J Sports Med 1998;19(1):61-67. DOI: 10.1055/s-2007-971882
33. Décombaz J. Nutrition and recovery of muscle energy stores after exercise. Schweizerische zeitschrift fur sportmedizin und sporttraumatologie 2003;51(1):31-38.
34. Moore DR, Areta J, Coffey VG, Stellingwerff T, Phillips SM, Burke LM, et al. Daytime pattern of post-exercise protein intake affects whole-body protein turnover in resistance-trained males. Nutr metab 2012; 9(1): 1-5. DOI: 10.1186/1743-7075-9-91
35. Badenhorst CE, Dawson B, Cox GR, Laarakkers CM, Swinkels DW, Peeling P. Acute dietary carbohydrate manipulation and the subsequent inflammatory and hepcidin responses to exercise. Eur J Appl Physiol 2015;115(12):2521-2530. DOI: 10.1007/s00421-015-3252-3
36. McKay AK, Peeling P, Pyne,DB, Welvaert M, Tee N, Leckey JJ, et al. Chronic adherence to a ketogenic diet modifies iron metabolism in elite athletes. Med Sci Sports Exerc 2019;51(3):548-555. DOI: 10.1249/MSS.0000000000001816
37. Peeling P, McKay AKA, Pyne DB, Guelfi KJ, McCormick, R.H.; Laarakkers, C.M. et al. Factors influencing the post-exercise hepcidin-25 response in elite athletes. Eur J Appl Physiol 2017;117(6):1233–1239. DOI: 10.1007/s00421-017-3611-3
38. Hennigar SR, McClung JP, Pasiakos SM. Nutritional interventions and the IL‐6 response to exercise. FASEB J 2017; 31(9):3719-3728. DOI: 10.1096/fj.201700080R.
39. Burden RJ, Pollock N, Whyte GP, Richards T, Moore B, Busbridge M, et al. Effect of intravenous iron on aerobic capacity and iron metabolism in elite athletes. Med Sci Sports Exerc 2015;47(7):1399–1407. DOI: 10.1249/MSS.0000000000000568
40. Costello N, Deighton K, Dyson J, McKenna J, Jones B. Snap-N-Send: A valid and reliable method for assessing the energy intake of elite adolescent athletes. Eur J Sport Sci 2017;17(8):1044-1055. DOI: 10.1080/17461391.2017.1337815
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