THIRST RESPONSE TO POST-EXERCISE FLUID REPLACEMENT NEEDS AND CONTROLLED DRINKING

THIRST RESPONSE TO POST-EXERCISE FLUID REPLACEMENT NEEDS AND CONTROLLED DRINKING

Perceived thirst (TP) was evaluated as a dependent variable: can it distinguish among several levels of acute dehydration, is it reliable, and how does it respond to the ingestion of a fixed water volume post exercise? In a repeated-measures design, eight physically active students (24.5±3.6 years,...

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Autores principales: Capitán-Jiménez, Catalina, Aragón-Vargas, Luis Fernando
Formato: Online
Idioma:eng
Publicado: Escuela de Educación Física y Deportes - Universidad de Costa Rica 2016
Acceso en línea:https://revistas.ucr.ac.cr/index.php/pem/article/view/25853
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institution Universidad de Costa Rica
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language eng
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author Capitán-Jiménez, Catalina
Aragón-Vargas, Luis Fernando
spellingShingle Capitán-Jiménez, Catalina
Aragón-Vargas, Luis Fernando
THIRST RESPONSE TO POST-EXERCISE FLUID REPLACEMENT NEEDS AND CONTROLLED DRINKING
author_facet Capitán-Jiménez, Catalina
Aragón-Vargas, Luis Fernando
author_sort Capitán-Jiménez, Catalina
description Perceived thirst (TP) was evaluated as a dependent variable: can it distinguish among several levels of acute dehydration, is it reliable, and how does it respond to the ingestion of a fixed water volume post exercise? In a repeated-measures design, eight physically active students (24.5±3.6 years, mean±SD), reported to the laboratory on four non-consecutive days. They remained at rest or exercised at 32±3°C db and 65±6% rh to a randomly assigned dehydration equivalent to 1, 2, and 3% of body mass (BM). Following exercise, participants ingested a fixed water volume of 1.20% BM in 30 minutes; urine output, TP and plasma volume changes were assessed every 30 minutes over 3 hours. Post-exercise TP was not different before and after showering (p = 0.860), but it was significantly different among conditions (TP = 2.50 ± 0.45, 4.44 ± 0.72, 6.38 ± 0.82, and 8.63 ± 0.18 for 0, 1, 2, and 3% BM, p = 0.001). TP was associated with net fluid balance (rpart = -0.62, p < 0.0001) but, soon after drinking, TP was the same regardless of dehydration (p>0.05). Thirst perception is valid and reliable in the absence of drinking but it responds inappropriately to water intake.
title THIRST RESPONSE TO POST-EXERCISE FLUID REPLACEMENT NEEDS AND CONTROLLED DRINKING
title_short THIRST RESPONSE TO POST-EXERCISE FLUID REPLACEMENT NEEDS AND CONTROLLED DRINKING
title_full THIRST RESPONSE TO POST-EXERCISE FLUID REPLACEMENT NEEDS AND CONTROLLED DRINKING
title_fullStr THIRST RESPONSE TO POST-EXERCISE FLUID REPLACEMENT NEEDS AND CONTROLLED DRINKING
title_full_unstemmed THIRST RESPONSE TO POST-EXERCISE FLUID REPLACEMENT NEEDS AND CONTROLLED DRINKING
title_sort thirst response to post-exercise fluid replacement needs and controlled drinking
title_alt THIRST RESPONSE TO POST-EXERCISE FLUID REPLACEMENT NEEDS AND CONTROLLED DRINKING
A RESPOSTA DA SEDE ÀS NECESSIDADES DE REPOSIÇÃO DE LÍQUIDO E À INGESTÃO CONTROLADA DEPOIS DO EXERCÍCIO
publisher Escuela de Educación Física y Deportes - Universidad de Costa Rica
publishDate 2016
url https://revistas.ucr.ac.cr/index.php/pem/article/view/25853
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spelling PEM258532021-06-09T01:05:48Z THIRST RESPONSE TO POST-EXERCISE FLUID REPLACEMENT NEEDS AND CONTROLLED DRINKING THIRST RESPONSE TO POST-EXERCISE FLUID REPLACEMENT NEEDS AND CONTROLLED DRINKING A RESPOSTA DA SEDE ÀS NECESSIDADES DE REPOSIÇÃO DE LÍQUIDO E À INGESTÃO CONTROLADA DEPOIS DO EXERCÍCIO Capitán-Jiménez, Catalina Aragón-Vargas, Luis Fernando Dehydration fluid intake thirst perception water-electrolyte balance humans Deshidratación ingesta de líquido percepción de sed equilibrio de agua y electrolitos humanos Desidratação ingestão de líquido percepção da sede equilíbrio de água e eletrólitos humanos Perceived thirst (TP) was evaluated as a dependent variable: can it distinguish among several levels of acute dehydration, is it reliable, and how does it respond to the ingestion of a fixed water volume post exercise? In a repeated-measures design, eight physically active students (24.5±3.6 years, mean±SD), reported to the laboratory on four non-consecutive days. They remained at rest or exercised at 32±3°C db and 65±6% rh to a randomly assigned dehydration equivalent to 1, 2, and 3% of body mass (BM). Following exercise, participants ingested a fixed water volume of 1.20% BM in 30 minutes; urine output, TP and plasma volume changes were assessed every 30 minutes over 3 hours. Post-exercise TP was not different before and after showering (p = 0.860), but it was significantly different among conditions (TP = 2.50 ± 0.45, 4.44 ± 0.72, 6.38 ± 0.82, and 8.63 ± 0.18 for 0, 1, 2, and 3% BM, p = 0.001). TP was associated with net fluid balance (rpart = -0.62, p < 0.0001) but, soon after drinking, TP was the same regardless of dehydration (p>0.05). Thirst perception is valid and reliable in the absence of drinking but it responds inappropriately to water intake. Perceived thirst (TP) was evaluated as a dependent variable: can it distinguish among several levels of acute dehydration, is it reliable, and how does it respond to the ingestion of a fixed water volume post exercise? In a repeated-measures design, eight physically active students (24.5±3.6 years, mean±SD), reported to the laboratory on four non-consecutive days. They remained at rest or exercised at 32±3°C db and 65±6% rh to a randomly assigned dehydration equivalent to 1, 2, and 3% of body mass (BM). Following exercise, participants ingested a fixed water volume of 1.20% BM in 30 minutes; urine output, TP and plasma volume changes were assessed every 30 minutes over 3 hours. Post-exercise TP was not different before and after showering (p = 0.860), but it was significantly different among conditions (TP = 2.50 ± 0.45, 4.44 ± 0.72, 6.38 ± 0.82, and 8.63 ± 0.18 for 0, 1, 2, and 3% BM, p = 0.001). TP was associated with net fluid balance (rpart = -0.62, p < 0.0001) but, soon after drinking, TP was the same regardless of dehydration (p>0.05). Thirst perception is valid and reliable in the absence of drinking but it responds inappropriately to water intake. Avaliou-se a percepção da sede (PS) como variável dependente: Pode esta distinguir entre distintos níveis de desidratação aguda? É confiável? Como responde à ingestão de um volume fixo de água depois do exercício? Conforme um desenho de medidas repetidas, oito estudantes fisicamente ativos (24.5±3.6 anos, média±DE) relataram ao laboratório em quatro dias não consecutivos. Mantiveram-se em repouso ou se exercitaram a 32±3°C bs e 65±6% h até alcançar uma desidratação equivalente a 1, 2 ou 3% da massa corporal (MC); a ordem das provas foi designada aleatoriamente. Depois do exercício, os participantes ingeriram um volume fixo de água equivalente a 1.20% MC em 30 minutos. Mediu-se a eliminação de urina, a PS e as mudanças no volume plasmático a cada 30 minutos ao longo de três horas. Não houve diferença entre a PS pós-treino antes do banho e a PS depois do banho (p = 0.860), mas a PS sim foi distinta entre condições (PS = 2.50 ± 0.45, 4.44 ± 0.72, 6.38 ± 0.82, e 8.63 ± 0.18 para 0, 1, 2 e 3% MC, p = 0.001). Observou-se uma associação entre PS e o equilíbrio neto de líquido (rpar = -0.62, p < 0.0001), porém, pouco depois de beber, a PS foi igual sem importar a desidratação (p>0.05). A percepção da sede é válida e confiável enquanto não se bebe, mas responde inadequadamente à ingestão de água. Escuela de Educación Física y Deportes - Universidad de Costa Rica 2016-12-24 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed article Experimental Artículo con revisión por pares Experimental Artigo avaliado pelos pares Experimental application/pdf application/pdf application/vnd.ms-excel application/pdf application/vnd.ms-excel https://revistas.ucr.ac.cr/index.php/pem/article/view/25853 10.15517/pensarmov.v14i2.25853 Pensar en Movimiento: Revista de Ciencias del Ejercicio y la Salud; Vol. 14 No. 2 (2016): Pensar en Movimiento: Revista de Ciencias del Ejercicio y la Salud (cierra 31 de diciembre); 1-16 Pensar en Movimiento: Revista de Ciencias del Ejercicio y la Salud; Vol. 14 Núm. 2 (2016): Pensar en Movimiento: Revista de Ciencias del Ejercicio y la Salud (cierra 31 de diciembre); 1-16 Pensar en Movimiento: Revista de Ciencias del Ejercicio y la Salud; v. 14 n. 2 (2016): Pensar en Movimiento: Revista de Ciencias del Ejercicio y la Salud (cierra 31 de diciembre); 1-16 Pensar en movimiento; Vol. 14 N.º 2 (2016): Pensar en Movimiento: Revista de Ciencias del Ejercicio y la Salud (cierra 31 de diciembre); 1-16 1659-4436 1409-0724 eng https://revistas.ucr.ac.cr/index.php/pem/article/view/25853/27811 https://revistas.ucr.ac.cr/index.php/pem/article/view/25853/28445 https://revistas.ucr.ac.cr/index.php/pem/article/view/25853/31328 https://revistas.ucr.ac.cr/index.php/pem/article/view/25853/35391 https://revistas.ucr.ac.cr/index.php/pem/article/view/25853/35639 10.15517/pensarmov.v14i2.25853.g28445 10.15517/pensarmov.v14i2.25853.g31328 10.15517/pensarmov.v14i2.25853.g35391 10.15517/pensarmov.v14i2.25853.g35639 Derechos de autor 2016 Catalina Capitán-Jiménez, Luis Fernando Aragón-Vargas

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