Çocuklarda Termoregülasyon ve Egzersize Bağlı Hidrasyon Uygulaması

Year 2023, Volume: 3 Issue: 3, 198 - 206, 28.10.2023

Yeliz Yol Gülşah Ünver

Abstract

Amaç: Vücudun metabolik işlemleri, enerji üretmek için besin maddelerinin oksitlenmesiyle gerçekleşir. Bu oksidasyon süreci, genellikle adenozin trifosfat (ATP) olarak adlandırılan enerji taşıyıcı molekülün sentezini içerir. Metabolizma sırasında, besin maddelerinin oksidasyonunda bir miktar enerji ısı olarak kaybolur. Bu durum, kimyasal tepkimelerin tamamen verimli olmaması ve ısı üretiminin kaçınılmaz bir sonucu olarak ortaya çıkar. Kas kasılması sırasında, vücut tarafından üretilen enerjinin bir kısmı, kasların mekanik iş yapmasına yardımcı olurken, geriye kalanı ısı olarak kaybolur. Bu, kas kasılması sırasında enerjinin tamamen verimli bir şekilde mekanik işe dönüşmediği anlamına gelir. Aşırı ısı birikimi veya salınımı, hücresel ve organ sistemlerinin fizyolojik işlevini tehlikeye atarak insan performansının bozulmasına yol açabilir. Bu nedenle ısı stresine karşı insan termoregülasyon tepkileri, vücut sıcaklığını düzenlemek ve ısıyı dengeli bir şekilde dağıtmak için kullanılan iki temel mekanizmayı içerir. Yüksek ortam sıcaklığı ve nem koşullarında, vücudun termoregülasyon sistemleri daha fazla zorlanır. Bu, rekabetçi sporlarla ilgilenen ve aktif bireyler için, kaslar tarafından üretilen ısıyı etkili bir şekilde dağıtmanın özellikle çocuklarda kritik bir öneme sahip olduğu anlamına gelir. Bu nedenle bu derlemede çocuklarda termoregülasyon ile egzersiz sırasında hidrasyon uygulamalarının teori bakış açısıyla incelenmesi amaçlanmıştır.
Yöntem: Veriler anahtar kelimeler kullanılarak Google Scholar, PubMed ve Sciencedirect veritabanları aracılığıyla tarama yöntemi ile elde edildi.
Bulgular: Termoregülasyon ve egzersize bağlı hidrasyon uygulaması, çocukların vücut sıcaklığını düzenleme yeteneklerini anlamak ve sağlıklı bir şekilde egzersiz yapmalarını sağlamaktadır.
Sonuç: Çocuklara egzersiz sırasında su içmeleri için yeterli fırsat verilirse, yalnızca susuzluktan kaynaklanan sıvı hacmi alımının çocuklarda önemli düzeyde dehidrasyonu önlemesi beklenir.

Keywords

Çocuk, egzersiz, hidrasyon

Thermoregulation and Hydration in Children

Abstract

Purpose: The body's metabolic processes occur through the oxidation of nutrients to produce energy. This oxidation process involves the synthesis of the energy carrier molecule, usually called adenosine triphosphate (ATP). During metabolism, some energy is lost as heat in the oxidation of nutrients. This occurs as an inevitable consequence of the fact that chemical reactions are not completely efficient and heat is generated. During muscle contraction, some of the energy produced by the body helps the muscles to perform mechanical work, while the rest is lost as heat. This means that during muscle contraction, energy is not completely efficiently converted into mechanical work. Excessive heat accumulation or release can lead to impaired human performance by compromising the physiological function of cellular and organ systems. Human thermoregulatory responses to heat stress therefore involve two basic mechanisms used to regulate body temperature and to distribute heat in a balanced manner. Under conditions of high ambient temperature and humidity, the body's thermoregulatory systems are more stressed. This means that for active individuals involved in competitive sports, effectively dissipating the heat generated by muscles is of critical importance, especially in children. Therefore, the aim of this review was to examine thermoregulation in children and hydration practices during exercise from a theoretical perspective.
Method: Data were obtained by searching Google Scholar, PubMed and Sciencedirect databases using keywords.
Results: Thermoregulation and exercise-induced hydration practices help children to understand their ability to regulate body temperature and exercise in a healthy way. Conclusion: If children are given sufficient opportunity to drink water during exercise, fluid volume intake from thirst alone is expected to prevent significant dehydration in children.

Keywords

Child, exercise, hydration

References

• Adcock M P, Bines W H, Smith, F W. (2000). Heat-related illnesses, deaths, and risk factors–Cincinnati and Dayton, Ohio, 1999, and the United States, 1979–1997. Morbidity and Mortality Weekly Report. 49, 470–473.
• Bal E, Malkoç N, Aydemir Aman E. (2023). Su egzersizleri ve iştah mekanizması. Spor bilimlerinde uluslararası çalışmalar, Spor Bilimlerinde Uluslararası Çalışmalar. (Ed., Özgür F.). Ankara, Serüven yayınevi, 174.
• Bangsbo J, Krustrup P, Gonza ́lez-Alonso J, Saltin B. (2001). ATP production and efficiency of human skeletal muscle during intense exercise: effect of previous exercise. Am J Physiol Edocrinol Metab. 280, 956–964.
• Bar-Or O. (1989). Temperature regulation during exercise in children and adolescents. In C. V. Gisolfi, & D. R. Lamb (Eds.), Perspectives in Exercise Science and Sports Medicine. Indianapolis: Bench- mark. Youth, Exercise and Sport. 2, 335–362.
• Bergeron M F, Devore C, Rice S G. (2011). Policy Statement: Climatic heat stress and the exercising child and adolescent. Pediatrics. 128(3), 741–747.
• Boulant J A. (1985). Neuronal basis of Hammel’s model for set-point thermoregulation. J Appl Physiol. 100, 1347–1354.
• Boulant J A. (2000). Role of the preoptic-anterior hypothalamus in thermoregulation and fever. Clin Infect Dis. 31(5), 157–161.
• Bytomski J R, Squire D L. (2003). Heat illness in children. Current Sports Med- icine Reports. 2, 320–324.
• Cheuvront S N, Carter R, Sawka N. (2003). Fluid balance and endurance per-formance. Current Sports Medicine Reports. 2, 202–208.
• Curtin N A, Woledge R C. (1978). Energy changes and muscular contraction. Physiol Rev. 58, 690–761.
• Dilekçi U. (2023). Psikomotor Gelişim ve Psikomotor Gelişim Dönemleri, 80-102. Ankara: Platanus Publishing
• Drinkwater B L, Kuppart I C, Denton J E, Crist J L, Horvath S M. (1977). Response of prepubertal girls and college women to work in the heat. J Appl Physiol. 43, 1046–1053.
• Epstein Y. (1983). Role of surface-to-mass ratio and work efficiency in heat intolerance. J Appl Physiol. 54, 831–836.
• Falk B, Bar-Or O, MacDougall J D. (1992). Thermoregulatory responses of premid and late-pubertal boys to exercise in dry heat. Med Sci Sports Exerc. 24, 688–694.
• Falk B, Dotan R. (2008). Children’s thermoregulation during exercise in the heat: a revisit. Applied Physiology Nutrition Metabolism. 33, 420–427.
• Gonzalez-Alonso J, Mora-Rodr ́ıguez R, Coyle E F. (2000). Stroke volume during exercise: interaction of environment and hydration. Am J Physiol Heart Circ Physiol. 278, 321–330.
• Horswill C A, Horn M K, Stofan J R, et al. (2005). Adequacy of fluid ingestion in adolescents and adults during exercise. Pediatric Exercise Science. 17, 41–50.
• Inbar O, Morris N, Epstein Y, Gass G. (2004). Comparison of thermoregulatory response to exercise in dry heat among prepubertal boys, young adults, and older males. Exp Physiol. 89, 691–700.
• Johnson J M, Proppe D W. (1996). Cardiovascular adjustments to heat stress. In: Handbook of Physiology. Fregly MJ, Blatteis CM, eds. Section 4: Environmental Physiology. Vol 1. New York, NY: Oxford University Press. 215-243.
• Kanosue K, Crawshaw L I, Nagashima K, Yoda T. (2010). Concepts to utilize in describing thermoregulation and neurophysiological evidence for how the system works. European journal of applied physiology. 109, 5-11.
• Krustrup P, Ferguson R A, Kjaer M, Bangsbo J. (2003). ATP and heat production in human skeletal muscle during dynamic exercise: higher efficiency of anaerobic than aerobic ATP resynthesis. J Physiol. 549, 255–269.
• Marino F E, Mbambo Z, Kortekaas E, Wilson G, Lambert M I, Noakes T D, Dennis S C. (2000). Advantages of smaller body mass during running in warm humid environments. Eur J Physiol. 441, 359–367.
• Meyer F, Bar-Or O, MacDougall D, et al. (1992). Sweat electrolyte loss during exercise in the heat: effects of gender and maturation. Medicine and Science in Sport and Exercise. 24, 776–781.
• Meyer F, Volterman K A, Timmons B W, Boguslaw W. (2012). Fluid bal- ance and dehydration in the young athlete: Assessment considerations and effects on health and performance. American Journal of Lifestyle Medicine. 6, 489–501.
• Morrison S A, Sims S T. (2014). Thermoregulation in children: Exercise, heat stress & fluid balance. Annales Kinesiologiae. 5(1).
• Nakai S, Itoh T, Morimoto T. (1999). Death from heat-stroke in Japan: 1968–1994. International Journal of Biometeorology. 43, 124–127.
• Nielsen B, Kassow K, Aschengreen F E. (1988). Heat balance during exercise in the sun. European Journal of Applied Physiology. 58, 189–196.
• Popkin B M, D’Anci K E, Rosenberg I H. (2010). Water, Hydration and Health. Nutrition Reviews. 68(8), 439–458.
• Rowell L B. (1983). Cardiovascular adjustments to thermal stress. In: Handbook of Physiology. Shepherd JT, Abboud FM, eds. Section 2: The Cardiovascular System. Bethesda, Md: American Physiological Society. 3(2), 967-1023.
• Rowland T. (2008). Thermoregulation during exercise in the heat in children: old con- cepts revisited. Journal of Applied Physiology. 105, 718–24.
• Rowland T. (2011). Fluid replacement requirements for child athletes. Sports Medicine, 41(4), 279–288.
• Sawka M N, Cheuvront S N, Kenefick R W. (2015). Hypohydration and human performance: impact of environment and physiological mechanisms. Sports Medicine. 45, 51-60.
• Sawka M N, Latzka W A, Matott R P, Montain S J. (1998). Hydration effects on temperature regulation. International Journal of Sports Medicine. 19(2), 108–110.
• Sawka M N, Noakes T D. (2007). Does dehydration impair exercise perfor- mance? Medicine and Science in Sport and Exercise. 39, 1209–1217.
• Schuman S H. (1972). Patterns of urban heat-wave deaths and implications for prevention: data from New York and St. Louis during. Environ Res. (5), 59-75.
• Semenza J C, McCullough J E, Flanders W D, McGeehin M A, Lumpkin J R. (1999). Excess hospital admissions during heat wave in Chicago. Am J Prev Med. (16), 269-277.
• Simon E. (1974). Temperature regulation: the spinal cord as a site of extrahypothalamic thermoregulatory functions. Rev Physiol Biochem Pharmacol. 71, 1–76
• Taylor W F, Johnson J M, O’Leary D, Park M K. (1984). Effect of high local temperature on reflex cutaneous vasodilation. J Appl Physiol. 57, 191-196.
• Wilkie D R. (1968). Heat work and phosphorylcreatine break-down in muscle. J Physiol. 195, 157–183. Yol Y, Bal E, Malkoç N. (2023). Raket Sporlarında Ergojenik Yardımcılar. Spor Bilimlerinde Uluslararası Çalışmalar. (Ed., Özgür F.). Ankara, Serüven yayınevi, 106