Effect of heat stress on the state state of hydration of young people during practice volleyball

  • Herikson Araújo Costa Graduando do Curso de Licenciatura em Educação fí­sica da Universidade Federal do Maranhão - UFMA. Integrante do Laboratório de Fisiologia e Prescrição do Exercí­cio do Maranhão - LAFIPEMA
  • Raphael Furtado Marques Acadêmico do curso de Licenciatura em Educação Fí­sica - UFMA
  • Ednei Costa Maia Acadêmico do curso de Medicina - UFMA
  • Jurema Gonçalves Lopes de Castro Filha Profª. de Educação Fí­sica e Especialista em Medicina do Esporte - UFMA
  • Luiz Alexandre de Menezes Nunes Prof. Substituto do curso de Licenciatura em Educação Fí­sica - UFMA
  • Mário Norberto Sevilio de Oliveira Júnior Prof. Adjunto do curso de Licenciatura em Educação Fí­sica - UFMA
Keywords: Dehydration, Urine density, Environmental conditions

Abstract

The objective of this study was to evaluate the effect of the thermal stress on thehydration over a volleyball class. Participants were 18 students of Physical Education (9 males and 9 females), with age of 22,61±1,46 years, height 164,7±7,65cm, body weight 64,41±12,02kg. The fluid intake was "ad libitum" and the urine was collected before and after the class. The height and weight and, the evaluation of the dehydration through the density of the urine (Du) were measured by a digital stadiometer (WISO, W721), and refractometer, (Instrutherm, RTP-20ATC), respectively. The environmental conditions were registered by a digital thermo-hygrometer (Instrutherm, HT-260). The temperature and the relative humidity of the air were, respectively, 35,46±1,21 °C and 45,86±2,79%. The statistical analysis were based on t student test(p≤ 0,01). The water ingestion was 473,14±279,30 ml/h and the corporal weight at the end of the class was 63,77±12,07 Kg, the Du before and Du after were, respectively, 1022,56±8,02 and 1027,44±7,41SG. There was significant difference for Du. The amount of water ingested probably was not enough to hydro homeostasis. It is possible that the mechanism of the thirst was not efficient to maintain the water normality and that the allied exercise to the stress thermal increased the dehydration.

Author Biography

Herikson Araújo Costa, Graduando do Curso de Licenciatura em Educação fí­sica da Universidade Federal do Maranhão - UFMA. Integrante do Laboratório de Fisiologia e Prescrição do Exercí­cio do Maranhão - LAFIPEMA

 

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Published
2012-05-23
How to Cite
Costa, H. A., Marques, R. F., Maia, E. C., Castro Filha, J. G. L. de, Nunes, L. A. de M., & Oliveira Júnior, M. N. S. de. (2012). Effect of heat stress on the state state of hydration of young people during practice volleyball. Brazilian Journal of Exercise Prescription and Physiology, 6(33). Retrieved from https://www.rbpfex.com.br/index.php/rbpfex/article/view/405
Issue
Vol. 6 No. 33 (2012)
Section
Scientific Articles - Original

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