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Previous issue date: 2012 / Atletas de v?rias modalidades desportivas realizam mais de uma sess?o de treinamento por
dia. Diversas estrat?gias t?m sido utilizadas com o intuito de acelerar a recupera??o p?s-exerc?cio.
Embora a imers?o em ?gua seja uma estrat?gia comum entre os atletas, a sua
efic?cia na acelera??o da recupera??o ainda n?o est? estabelecida, e os efeitos da temperatura
da ?gua na imers?o sobre o desempenho n?o s?o claros. Sendo assim, este estudo avaliou os
efeitos da recupera??o passiva por imers?o em ?gua, em diferentes temperaturas, sobre o
desempenho ap?s uma sess?o de exerc?cio. Nove homens, jovens, fisicamente ativos,
participaram de quatro sess?es experimentais randomizadas compostas por exerc?cio
exc?ntrico (3 x 10 repeti??es a 100% de uma repeti??o m?xima) e 90 minutos de corrida em
esteira rolante a 70% do pico de consumo de oxig?nio. Em seguida, os volunt?rios
recuperaram durante 45 minutos, distribu?dos em 15 minutos de imers?o em ?gua a 15, 28 ou
38?C sentados e 30 minutos deitados em repouso a temperatura ambiente (20 ? 2? C). Na
sess?o controle (CON), durante a recupera??o, os volunt?rios permaneceram sentados durante
15 minutos ? temperatura ambiente. Quatro horas ap?s o final do exerc?cio experimental, os
volunt?rios foram submetidos ? corrida de intensidade autorregulada m?xima de 5 km seguido
do teste de Wingate para avaliar o desempenho f?sico. A temperatura retal (Tret), a frequ?ncia
card?aca (FC) e sua variabilidade (VFC) foram medidas ao longo de toda a sess?o. O consumo
excessivo de oxig?nio p?s-exerc?cio (EPOC) foi medido durante a recupera??o. Os
marcadores do dano muscular, creatina quinase (CK) e aspartato amino transferase (AST) e a
contagem de leuc?citos totais foram medidas antes e ap?s o exerc?cio, ap?s imers?o, antes e
ap?s o desempenho, e 24 horas ap?s o exerc?cio experimental. A velocidade m?dia na corrida
de intensidade autorregulada m?xima de 5 km e a pot?ncia pico relativano teste de Wingate
n?o foram diferentes entre as condi??es experimentais. A imers?o em ?gua a 15?C reduziu a
Tret, a FC e os ?ndices de VFC a valores de repouso, ap?s a recupera??o. O EPOC foi maior na
imers?o em ?gua a 15?C e a 28?C. Durante a corrida de intensidade autorregulada de 5 km e
do teste Wingate, a Tret e a FC n?o foram diferentes entre as condi??es experimentais. A
sess?o de exerc?cio experimental induziu dano muscular e leucocitose. Entretanto, n?o houve
diferen?a nos n?veis s?ricos de CK, AST e no n?mero de leuc?citos totais entre as condi??es
experimentais. A recupera??o por imers?o em ?gua,a diferentes temperaturas, n?o foi efetiva
em modificar o desempenho f?sico 4 horas ap?s uma sess?o de exerc?cio prolongado. / Disserta??o (Mestrado) ? Programa Multic?ntrico de P?s-gradua??o em Ci?ncias Fisiol?gicas, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2012. / Athletes of several sport modalities regularly train more than once a day. Several strategies
have been used in order to accelerate post-exercise recovery. Although water immersion is a
common strategy among athletes, it effectiveness in accelerate the recovery is not yet
established, and the effects of temperature water immersion on performance are not clear.
Thus, this study evaluated the effects of passive recovery water immersion at different
temperatures on performance following an exercise session.Nine physically active men (24 ?
6 years old, 72 ? 13 kg, 177 ? 7 cm, peak oxygen consumption (VO2peak) of 55 ? 4 mL?kg-
1?min-1), participated of four randomized experimental sessions. Each session consisted of
eccentric knee flexion (3 x 10 repetitions of 100% from one maximum repetition) and 90
minutes of treadmill running at 70% of VO2peak, followed by 15 minutes of passive recovery
by water immersion at 15?C, 28?C or 38?C and 30 minutes resting in supine position at room
temperature (20 ? 2?C). In the control session, volunteers remained seated for 15 minutes at
room temperature after exercise. After four hours of resting, in order to evaluate recovery
strategies, the volunteers underwent a 5 km of maximal self-paced treadmill running followed
by the Wingate test. Prior to experimental sessions, rested volunteers completed 5 km of
maximal self-paced running and the Wingate test, which were used as reference performance
values. Rectal temperature (Tret), heart rate (HR) and heart rate variability indexes (HRV
indexes) were measured through the entire session. Excess post-exercise oxygen consumption
(EPOC) was measured during recovery period. The markers of muscle damage, creatine
kinase (CK) and aspartate aminotransferase (AST) and total leukocyte count were measured
before and after exercise, after immersion, before and after performance tests, and 24 hours
after the experimental exercise. Average speed during 5 km of maximal self-paced treadmill
running and relative peak power during Wingate test were not different between experimental
conditions. Water immersion at 15?C reduced Tret, HR and HRV indexes to baseline values
after recovery. EPOC was higher in water immersion at 15?C and 28?C. During 5 km of
maximal self-paced treadmill running and Wingate test, Tret and HR were not different
between experimental conditions. The experimental exercise session induced muscle damage
and leukocytosis. However, there was no difference in serum CK, AST and total leukocyte
count between experimental conditions.The recovery by water immersion at different
temperatures was not effective in modify the physical performance 4 hours after a session of
prolonged exercise.
| Identifer | oai:union.ndltd.org:IBICT/oai:acervo.ufvjm.edu.br/jspui:1/1502 |
| Date | 21 August 2012 |
| Creators | Paula, Fabr?cio de |
| Contributors | Amorim, Fabiano Trigueiro, Vieira, Etel Rocha, Moreira, Christiano Ant?nio Machado, Lacerda, Ana Cristina Rodrigues, Coimbra, C?ndido Celso, Vieira, Etel Rocha, Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM), Amorim, Fabiano Trigueiro |
| Publisher | UFVJM |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Source | reponame:Repositório Institucional da UFVJM, instname:Universidade Federal dos Vales do Jequitinhonha e Mucuri, instacron:UFVJM |
| Rights | A concess?o da licen?a deste item refere-se ao ? termo de autoriza??o impresso assinado pelo autor, assim como na licen?a Creative Commons, com as seguintes condi??es: Na qualidade de titular dos direitos de autor da publica??o, autorizo a Universidade Federal dos Vales do Jequitinhonha e Mucuri e o IBICT a disponibilizar por meio de seus reposit?rios, sem ressarcimento dos direitos autorais, de acordo com a Lei n? 9610/98, o texto integral da obra disponibilizada, conforme permiss?es assinaladas, para fins de leitura, impress?o e/ou download, a t?tulo de divulga??o da produ??o cient?fica brasileira, e preserva??o, a partir desta data., info:eu-repo/semantics/openAccess |
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