Adaptação de protocolos invasivos e não invasivos para avaliações aeróbias e anaeróbias específicas ao basquetebol feminino

Abstract

Objective: The aim of the study was to adapt the critical velocity (CV), RAST test and lactate minimum (LM) to evaluation of female basketball players. Methods: Twelve well-trained female basketball players (19 ± 1yrs) were submitted to four running intensities (10 -14 km/h) at shuttle exercise until exhaustion, applied on alternate days. The linear model 'velocity vs. 1/tlim' was adopted to determine the aerobic (CV) and anaerobic (ARC) parameters. The lactate minimum test consisted of two phases: 1) hyperlactatemia induction using the RAST test and 2) incremental test composed of five shuttle run (20-m) at 7, 8, 9, 10, and 12 km/h. Blood samples were collected at the end of each stage. Results: The velocity (vLM) and blood lactate concentrations at LM were obtained by two polynomial adjustments: lactate vs. intensity (LM1) and lactate vs. time (LM2). One-way ANOVA, Student's t-test and Pearson correlation were used for statistical analysis. The CV was obtained at 10.3 ± 0.2 km/h and the ARC estimated at 73.0 ± 3.4 m. The RAST was capable to induce hyperlactatemia and to determine the P max (3.6 ±0.2 W/kg), P mean (2.8 ± 0.1 W/kg), P min (2.3 ± 0.1 W/kg) and FI (30±3%). The vLM1 and vLM2 were obtained, respectively, at 9.47 ±0.13 km/h and 9.8 ±0.13 km/h, and CV was higher than vLM1. Conclusion: The results suggest that the non-invasive model can be used to determine the aerobic and anaerobic parameters. Furthermore, the LM test adapted to basketball using RAST and progressive phase was effective to evaluate female athletes considering the specificity of modality, with high success rates observed in polynomial adjustment 'lactate vs. time' (LM2).

The Lactate Minimum Test: Concept, Methodological Aspects and Insights for Future Investigations in Human and Animal Models

“…Despite the fact that several studies followed the original 8 min recovery (Bacon and Kern, 1999; Carter et al, 1999a,b, 2000; MacIntosh et al, 2002; Dantas De Luca et al, 2003; Ribeiro et al, 2003; Zagatto et al, 2004, 2013, 2014; Simões et al, 2005, 2009; Hiyane et al, 2006; Altimari et al, 2007, 2010; Azevedo et al, 2007; Silva et al, 2007; Pardono et al, 2008; Johnson et al, 2009; Johnson and Sharpe, 2011; Mota et al, 2011; Barbieri and Gobatto, 2013; Camargo et al, 2013; Mezzaroba and Machado, 2013; Miranda et al, 2013; Miyagi et al, 2013, 2015; Campos et al, 2014; Messias et al, 2015), a myriad of recovery manipulations is also observed, especially regarding the recovery type and intensity (Davison et al, 2000; Smith et al, 2002; Rotstein et al, 2007; Silva et al, 2007; Sotero et al, 2007, 2009, 2011; Knoepfli-Lenzin and Boutellier, 2011; Vicente-Campous et al, 2014; Browne et al, 2015). Some attention has been given to this phase due to its potential LMI influence.…”

“…For instance, its application was already conducted in a specific manner for taekwondo (Mota et al, 2011), basketball (Araujo et al, 2013; Camargo et al, 2013), table tennis (Barbieri and Gobatto, 2013), triathlon (Vicente-Campous et al, 2014), and futsal (Messias et al, 2015; Barbieri et al, 2017) besides several other important issues (Carter et al, 2000; Davison et al, 2000; Dantas De Luca et al, 2003; Zagatto et al, 2004, 2013; Simões et al, 2005; Rotstein et al, 2007; Mezzaroba and Machado, 2013; Miyagi et al, 2015; Sousa et al, 2017). Along with its popularity, concerns have arisen involving the influence of possible methodological aspects on LMT parameters, and effectiveness of LMI for identifying training effects or even iMLSS estimation validity.…”

“…According to Tegtbur et al (1993) this minimum point named the lactate minimum intensity (LMI), provides an estimation of the intensity that represents the balance between the appearance and clearance of arterial blood lactate, known as the maximal lactate steady state intensity (iMLSS). Apart from the aerobic capacity estimation, studies have also applied anaerobic protocols during the hyperlactatemia phase (Smith et al, 2002; Araujo et al, 2013; Camargo et al, 2013; Messias et al, 2015), allowing the determination of anaerobic indexes, such as peak, mean and minimum force/power. Therefore, in addition to its easy application and objectivity, the LMT is also considered a valid physiological protocol for the assessment of aerobic and anaerobic parameters in just one evaluation session (Messias et al, 2015).…”