Jurema Gonçalves Lopes de Castro Filha

Estado de hidratación de atletas en carrera de calle de 15 km bajo elevado estrés térmico

INTRODUCTION: An adequate hydration status is of utmost importance to participants of street running, both for better sports performance and to preventi disorders caused by heat. OBJECTIVE: The study aimed to evaluate the hydration status of males on a 15 km street race. METHODS: The sample consisted of 15 males (37.67 ± 7.22 years old) habitual street runners. The hydration status was evaluated before and after the race by the following parameters: body weight, color and urine specific gravity (USG), bioelectrical impedance analysis (BIA), hemoglobin (Hb) and hematocrit (Ht). In data analysis, the paired Student t-test or the Wilcoxon test were used, setting as statistically significant p <0.01. RESULTS: There was a decrease in body weight of the subjects after the race (p <0.0001), as well as an increase in Hb and Ht. Despite the observed decrease in USG after exercise, there was no significant improvement in the standard of urine color or difference between the initial and final contents of total body water. The room temperature (RT) and relative humidity (RH) were 38.75±1.79°C and 37.37±4.66%, respectively. CONCLUSION: The exercise in the environment at issue led the individuals to a state of dehydration, only detected by the analysis of variation in body weight and blood parameters such as Hb and Ht. Urinary parameters such as urine color and USG, as well as those obtained by BIA, were probably confused by variables that were not controlled by the present study.INTRODUCAO: Um adequado estado de hidratacao e de suma importância para os participantes de corridas de rua, tanto para um melhor desempenho esportivo, quanto na prevencao dos disturbios causados pelo calor. OBJETIVO: O estudo visa avaliar o estado de hidratacao de individuos do sexo masculino em corrida de rua de 15 km. METODOS: A amostra foi composta por 15 individuos do sexo masculino (37,67±7,22 anos) praticantes habituais de corrida de rua. O estado de hidratacao foi avaliado antes e apos a corrida atraves dos seguintes parâmetros: peso corporal, coloracao e gravidade especifica da urina (GEU), analise da impedância bioeletrica (BIA), niveis de hemoglobina (Hb) e hematocrito (Ht). Na analise dos dados, foi utilizado o teste t de Student pareado ou o teste de Wilcoxon, aceitando-se como estatisticamente significante p < 0,01. RESULTADOS: Houve diminuicao do peso corporal dos individuos apos a corrida (p<0,0001), assim como elevacao dos niveis de Hb e Ht. Apesar da diminuicao observada na GEU apos o exercicio, nao houve melhora significativa do padrao de coloracao da urina ou diferenca entre o conteudo inicial e final de agua corporal total. A temperatura ambiente (TA) e umidade relativa do ar (URA) foram de 38,75±1,79°C e 37,37±4,66%, respectivamente. CONCLUSAO: O exercicio no ambiente em questao conduziu os individuos a um estado de desidratacao, apenas detectado pela analise da variacao do peso corporal e de parâmetros sanguineos atraves dos niveis de Hb e Ht. Parâmetros urinarios como a coloracao da urina e GEU, assim como aqueles obtidos atraves da BIA, provavelmente foram confundidos por variaveis nao controladas pelo presente estudo.

Estado de hidratação de atletas em corrida de rua de 15 km sob elevado estresse térmico

INTRODUCTION: An adequate hydration status is of utmost importance to participants of street running, both for better sports performance and to preventi disorders caused by heat. OBJECTIVE: The study aimed to evaluate the hydration status of males on a 15 km street race. METHODS: The sample consisted of 15 males (37.67 ± 7.22 years old) habitual street runners. The hydration status was evaluated before and after the race by the following parameters: body weight, color and urine specific gravity (USG), bioelectrical impedance analysis (BIA), hemoglobin (Hb) and hematocrit (Ht). In data analysis, the paired Student t-test or the Wilcoxon test were used, setting as statistically significant p <0.01. RESULTS: There was a decrease in body weight of the subjects after the race (p <0.0001), as well as an increase in Hb and Ht. Despite the observed decrease in USG after exercise, there was no significant improvement in the standard of urine color or difference between the initial and final contents of total body water. The room temperature (RT) and relative humidity (RH) were 38.75±1.79°C and 37.37±4.66%, respectively. CONCLUSION: The exercise in the environment at issue led the individuals to a state of dehydration, only detected by the analysis of variation in body weight and blood parameters such as Hb and Ht. Urinary parameters such as urine color and USG, as well as those obtained by BIA, were probably confused by variables that were not controlled by the present study.INTRODUCAO: Um adequado estado de hidratacao e de suma importância para os participantes de corridas de rua, tanto para um melhor desempenho esportivo, quanto na prevencao dos disturbios causados pelo calor. OBJETIVO: O estudo visa avaliar o estado de hidratacao de individuos do sexo masculino em corrida de rua de 15 km. METODOS: A amostra foi composta por 15 individuos do sexo masculino (37,67±7,22 anos) praticantes habituais de corrida de rua. O estado de hidratacao foi avaliado antes e apos a corrida atraves dos seguintes parâmetros: peso corporal, coloracao e gravidade especifica da urina (GEU), analise da impedância bioeletrica (BIA), niveis de hemoglobina (Hb) e hematocrito (Ht). Na analise dos dados, foi utilizado o teste t de Student pareado ou o teste de Wilcoxon, aceitando-se como estatisticamente significante p < 0,01. RESULTADOS: Houve diminuicao do peso corporal dos individuos apos a corrida (p<0,0001), assim como elevacao dos niveis de Hb e Ht. Apesar da diminuicao observada na GEU apos o exercicio, nao houve melhora significativa do padrao de coloracao da urina ou diferenca entre o conteudo inicial e final de agua corporal total. A temperatura ambiente (TA) e umidade relativa do ar (URA) foram de 38,75±1,79°C e 37,37±4,66%, respectivamente. CONCLUSAO: O exercicio no ambiente em questao conduziu os individuos a um estado de desidratacao, apenas detectado pela analise da variacao do peso corporal e de parâmetros sanguineos atraves dos niveis de Hb e Ht. Parâmetros urinarios como a coloracao da urina e GEU, assim como aqueles obtidos atraves da BIA, provavelmente foram confundidos por variaveis nao controladas pelo presente estudo.

Hydration status in athletes on 15 km street race under elevated heat stress

INTRODUCTION: An adequate hydration status is of utmost importance to participants of street running, both for better sports performance and to preventi disorders caused by heat. OBJECTIVE: The study aimed to evaluate the hydration status of males on a 15 km street race. METHODS: The sample consisted of 15 males (37.67 ± 7.22 years old) habitual street runners. The hydration status was evaluated before and after the race by the following parameters: body weight, color and urine specific gravity (USG), bioelectrical impedance analysis (BIA), hemoglobin (Hb) and hematocrit (Ht). In data analysis, the paired Student t-test or the Wilcoxon test were used, setting as statistically significant p <0.01. RESULTS: There was a decrease in body weight of the subjects after the race (p <0.0001), as well as an increase in Hb and Ht. Despite the observed decrease in USG after exercise, there was no significant improvement in the standard of urine color or difference between the initial and final contents of total body water. The room temperature (RT) and relative humidity (RH) were 38.75±1.79°C and 37.37±4.66%, respectively. CONCLUSION: The exercise in the environment at issue led the individuals to a state of dehydration, only detected by the analysis of variation in body weight and blood parameters such as Hb and Ht. Urinary parameters such as urine color and USG, as well as those obtained by BIA, were probably confused by variables that were not controlled by the present study.INTRODUCAO: Um adequado estado de hidratacao e de suma importância para os participantes de corridas de rua, tanto para um melhor desempenho esportivo, quanto na prevencao dos disturbios causados pelo calor. OBJETIVO: O estudo visa avaliar o estado de hidratacao de individuos do sexo masculino em corrida de rua de 15 km. METODOS: A amostra foi composta por 15 individuos do sexo masculino (37,67±7,22 anos) praticantes habituais de corrida de rua. O estado de hidratacao foi avaliado antes e apos a corrida atraves dos seguintes parâmetros: peso corporal, coloracao e gravidade especifica da urina (GEU), analise da impedância bioeletrica (BIA), niveis de hemoglobina (Hb) e hematocrito (Ht). Na analise dos dados, foi utilizado o teste t de Student pareado ou o teste de Wilcoxon, aceitando-se como estatisticamente significante p < 0,01. RESULTADOS: Houve diminuicao do peso corporal dos individuos apos a corrida (p<0,0001), assim como elevacao dos niveis de Hb e Ht. Apesar da diminuicao observada na GEU apos o exercicio, nao houve melhora significativa do padrao de coloracao da urina ou diferenca entre o conteudo inicial e final de agua corporal total. A temperatura ambiente (TA) e umidade relativa do ar (URA) foram de 38,75±1,79°C e 37,37±4,66%, respectivamente. CONCLUSAO: O exercicio no ambiente em questao conduziu os individuos a um estado de desidratacao, apenas detectado pela analise da variacao do peso corporal e de parâmetros sanguineos atraves dos niveis de Hb e Ht. Parâmetros urinarios como a coloracao da urina e GEU, assim como aqueles obtidos atraves da BIA, provavelmente foram confundidos por variaveis nao controladas pelo presente estudo.

Desidratação e balanço hídrico em meia maratona

The aim of this study was to evaluate the degree of dehydration from the hydric balance and density of urine (Du) in half marathon runners. The study included 18 male subjects. The fluid intake was “ad libitum” and was held in Du analysis at the beginning and at the end of the race, as well as measurements of weight and height. Environmental conditions (33,30 ± 5,30 oC and 57,50 ± 13,60% of URA) were recorded by digital hygrometer. The subjects began and finished the study dehydrated, and showed a significant difference in body weight (4,11%). We conclude that the fluid intake “ad libitum” was not sufficient to maintain hydric balance.

Dehydration and water balance in half marathon

The aim of this study was to evaluate the degree of dehydration from the hydric balance and density of urine (Du) in half marathon runners. The study included 18 male subjects. The fluid intake was “ad libitum” and was held in Du analysis at the beginning and at the end of the race, as well as measurements of weight and height. Environmental conditions (33,30 ± 5,30 oC and 57,50 ± 13,60% of URA) were recorded by digital hygrometer. The subjects began and finished the study dehydrated, and showed a significant difference in body weight (4,11%). We conclude that the fluid intake “ad libitum” was not sufficient to maintain hydric balance.

Deshidratación y el balance hídrico em media maratón

The aim of this study was to evaluate the degree of dehydration from the hydric balance and density of urine (Du) in half marathon runners. The study included 18 male subjects. The fluid intake was “ad libitum” and was held in Du analysis at the beginning and at the end of the race, as well as measurements of weight and height. Environmental conditions (33,30 ± 5,30 oC and 57,50 ± 13,60% of URA) were recorded by digital hygrometer. The subjects began and finished the study dehydrated, and showed a significant difference in body weight (4,11%). We conclude that the fluid intake “ad libitum” was not sufficient to maintain hydric balance.