Adaptação dos testes de lactato mínimo, potência crítica e limiar anaeróbio para avaliação da transição anaeróbia-anaeróbia em protocolo específico para o tênis de mesa

Abstract

ARTIGO ORIGINAL RESUMOOs objetivos do estudo foram verificar a adaptação dos testes de lactato mínimo, freqüência crítica e limiar anaeróbio em protocolo específico para o tênis de mesa para avaliação da transição anaeróbia-anaeróbia; verificar a reprodutibilidade do teste de lactato mínimo; e verificar a associação desses procedimentos específicos com o limiar anaeróbio determinado em corrida em esteira rolante (LAn est ). Para isso, foram estudados 11 mesatenistas com tempo mínimo de treinamento de dois anos. Foram aplicados os testes de: 1) lactato mínimo em duas ocasiões para análise da reprodutibilidade (LACmin 1 e LACmin 2 ); 2) teste de freqüência crítica (fcrit); 3) teste incremental para determinação do limiar anaeróbio através da concentração fixa de lactato de 3,5mM (LAn esp3,5 ) e regressão linear bissegmentada (LAn BI ), todos em procedimentos específicos para o tênis de mesa; e 4) o limiar anaeróbio em corrida aplicado em esteira rolante (LAn est ) determinado pela concentração fixa de lactato de 3,5mM. Nos procedimentos específicos foi utilizado um lançador de bolas mecânico como ergômetro e os participantes realizaram golpes apenas de forehand. Como procedimentos estatísticos foram utilizados os testes de Bland-Altman, correlação produto-momento e ANOVA one way, com nível de significância de 5%. As intensidades de LACmin (59,40 ± 4,06 e 61,56 ± 8,97 bolas ) foi apenas correlacionado com a intensidade de fcrit (0,73). Desse modo, pode-se concluir que o teste de LACmin específico é reprodutível e que esse procedimento, assim como o teste de fcrit, pode ser aplicado para avaliar a transição aeróbia-anaeróbia no tênis de mesa e que o LAn est deve ser utilizado com cautela na avaliação de mesatenistas.Palavras-chave: lactato, lançador de bolas mecânico, reprodutibilidade, especificidade, tênis de mesa. ABSTRACTThe aims of the present study were to adapt the lactate minimum, critical power model and anaerobic threshold tests for assessment of the aerobic-anaerobic transition in specific test for table tennis; to verify the reproducibility of the lactate minimum test and to verify the relationship between these specific procedures with the anaerobic threshold determined in running on treadmill (AnT TR ). Eleven male table tennis players participated in the study. The participants performed four tests (three specific tests and a conventional test performed on a treadmill): 1) lactate minimum test (LACmin) (applied twice for reproducibility analyses -LACmim1 and LACmin2); 2) critical frequency test (critf ); 3) incremental test for anaerobic threshold determination by 3.5 mM steady lactate concentration (AnT 3.5 ) and bi-segmented linear regression (AnT BI ) methods, all in specific protocol; and 4) anaerobic threshold on running (AnT TR ). Specific tests were applied by using a mechanical ball thrower to control the intensity of the exercise. The Bland-Altman plot, product-moment correlation and One-way ANOVA tests were used as statistical procedure, with significance level at 5%. , respectively, and onl...

Influência da seleção dos estágios incrementais sobre a intensidade de lactato mínimo: estudo piloto

“…The lactate minimum (LACmin) test, as well as individual anaerobic threshold 1 , anaerobic threshold 2 , respiratory compensation point 3 and others 4 , have been shown to be reproducible [5][6][7] , valid [8][9][10] and reliable [11][12][13] for estimating maximal lactate steady state intensity (iMLSS), which is considered as the gold standard procedure in the evaluation of aerobic capacity. The LACmin consists of an effort to induce hyperlactatemia followed by an incremental test and it has advantages over other protocols that aim to estimate the iMLSS, for example by not using fixed lactate values, such as the 4 mmol•L -1 proposed by Heck et al 2 .…”

Reproducibility and Validity of a Stroke Effectiveness Test in Table Tennis Based on the Temporal Game Structure

“…Almost most of the tests for measuring physiological and technical skills were applied in a specific table tennis exercise (i.e., in an ecological task), their protocols were characterized by a continuous profile, with use of only forehand (FH) offensive strokes at balls sent by a robot at fixed areas of ball contact with the table. Zagatto et al (Morel and Zagatto, 2008; Zagatto et al, 2008, 2011; Zagatto and Gobatto, 2012) developed a number of specific table tennis tests to assess physiological parameters, which in general comprised incremental (e.g., intensities incremented every 2–3 min – effort periods – interspersed with pauses of 30 s until voluntary exhaustion) and constant (e.g., 3-4 effort periods from 2 to 10 min, separated by a minimum break of 2 h) protocols. In these studies, balls were sent systematically at 2–4 fixed areas on the table.…”

“…Previous investigations have proposed several tests to evaluate the perceptual-motor skills (Faber et al, 2014a,b, 2015), aerobic and anaerobic parameters (Morel and Zagatto, 2008; Zagatto et al, 2008, 2011; Zagatto and Gobatto, 2012), and technical skills (Le Mansec et al, 2016) in table tennis players. Almost most of the tests for measuring physiological and technical skills were applied in a specific table tennis exercise (i.e., in an ecological task), their protocols were characterized by a continuous profile, with use of only forehand (FH) offensive strokes at balls sent by a robot at fixed areas of ball contact with the table.…”

Blood lactate minimum of rats during swimming test using three incremental stages

“…The lactate minimum test (LACmin test ), which consists of an effort to induce hyperlactatemia followed by an incremental test, have been shown to be reproducible (Dotan et al, 2011;Morel & Zagatto, 2008), and reliable (Ribeiro, Balikian, Malachias, & Baldissera, 2003;Smith, Balmer, Coleman, Bird, & Davison, 2002) for estimating maximal lactate steady state (MLSS) intensity, which is considered as the gold standard procedure in the aerobic endurance evaluation.…”