Comportamento de variáveis fisiológicas em atletas de nado sincronizado durante uma sessão de treinamento na fase de preparação para as Olimpíadas de Atenas 2004

Abstract

The purpose of this study was to evaluate the behavior of physiological variables during a synchronized swimming training session performed in athletes preparing for the Athens 2004 Olympic Games. Materials and methods: The sampling used was constituted by the duet (24 ± 0 years) who was representing Brazil in the Athens 2004 Olympic Games. Data collection was performed during a 198 minute training session. The training started with the physical portion, followed by the technical portion. In order to determine the glycemia and the ß-hydroxybutyrate, it was used an Optium ® monitor with its respective stripes. The cortisol and the dehydrogenase lactate enzymes (LDH), concentrations, as well as the kinase creatine (KC) concentration were determined through the radioimmunoassay (RIA © ) and through commercially available kits (CELM © ), respectively. The follow-up of the heart rate (HR) was performed using an Advantage Polar ® heart rate monitor. Results: It was noted a reduction (~2%) in the body weight. The glycemia also presented a fall (~30%) compared to the value attained in the beginning of the training session. Otherwise, it was observed an elevation in the cortisol concentration (salivary, 22%, and plasmatic, 29%) and in the ß-hydroxybutyrate (~340%). No significant changes in the plasmatic concentration of the KC and LDH were observed. The follow-up of the HR showed that from all 198 minutes of the training session, 36.5 ± 0.7 minutes were performed at a light intensity; 103.5 ± 0.7 minutes at a moderate intensity, 54.0 ± 2.1 minutes at a high intensity, and 4.0 ± 0.0 minutes at a very high intensity. Conclusions: The weight loss indicates that the hydric reposition was not adequate. The reduction in the glycemia and the increase in the ketonic bodies and cortisol concentrations reinforce the importance of a carbohydrate supplement during the long endurance training. The HR behavior shows that the training session was performed at a moderate intensity, but having fast moments of high intensity, in which routines were performed.

Profile of brazilian dissertations and theses about the cortisol as a stress marker

“…In general, studies do not suggest preference of material for analysis, meeting those using blood cortisol (COSWIG; NEVES; DEL VECCHIO, 2013;CRUZ et al, 2012. ), the salivary cortisol (ARRUDA et al, 2013a;2013b;MORAES, 2010), beyond the combined analysis of serum and salivary cortisol (PAZIKAS;CURI;AOKI, 2005).…”

“…The suggestion of the integrated stress analysis by combining multiple forms of assessment, highlight the complexity of the phenomenon, being used generally by researchers (ARRUDA et al, 2013a;2013b;COSWIG;NEVES;DEL VECCHIO, 2013;CRUZ et al, 2012;PAZIKAS;CURI;AOKI, 2005;MORAES, 2010).…”

Pode a termografia auxiliar no diagnóstico de lesões musculares em atletas de futebol?

“…At rest, these enzymes are found in low serum concentration; however, after intense exercise, they usually considerably increase their concentration 18 . Such increase is caused by the release of these and other enzymes in the blood stream after some kind of cellular damage, allowing hence that these enzymes, which are not normally able to cross the sarcoplasmatic membrane 31 , do it 14 . This increase may represent cellular necrosis after the onset of a muscular injury 34 .…”

“…On the other hand, it is known that high-intensity physical activities 18,31,32 contribute to the postexercise muscular injury and consequently increase of the LDH and CK levels 10,18 . The plasma samples were collected immediately after training for lactate dehydrogenase (LDH) and 24h after training for creatinekinase (CK) (U.L -1 ).…”

Respostas bioquímicas e físicas ao treinamento realizado dentro e fora da água em atletas de futsal

“…Nenhum trabalho com hidroginástica foi encontrado na literatura pesquisada, sendo encontrados estudos com a natação (NETO et al 2006;DA SILVA et al 2009), o nado sincronizado (PAZIKAS et al 2005), o cicloergômetro (PANTOJA et al 2006;) e a corrida em piscina funda (VENDRÚSCULO, 2005;TARTARUGA et al 2009). Esses estudos têm encontrado melhora do consumo máximo de oxigênio (VO 2 máx) igual ao treino em terra (VENDRÚSCULO, 2005), mas com menores níveis de CK (PANTOJA et al 2009;VENDRÚSCULO, 2005) ou sem alteração dessa enzima após uma sessão de treino (PAZIKAS et al 2005). Além disso, efeitos agudos foram obtidos por Da Silva et al (2009) que verificaram aumentos da atividade da catalase (CAT) após uma sessão de natação sem aumento das TBARS nem de CK.…”