Reliability and Validity of a New Specific Field Test of Aerobic Capacity with the Ball for Futsal Players

Abstract

The aim of this study was to establish the validity and reliability and verification of the reproducibility of the lactate minimum test (LM) to predict the maximal lactate steady state exercise intensity (MLSS) on a futsal-specific circuit (Futsal_circuit) which takes into consideration the technical movements performed. 16 male Brazilian futsal players (body mass: 67.7±8.3 kg; height: 1.73±0.05 m) were distributed randomly into 2 studies with 8 athletes in each (Study A - reproducibility; Study B - validity). First, aerobic capacity was determined by adapting the protocol of the LM to the futsal_circuit. In study A, the evaluation was repeated after 7 days (test e re-test) and, in study B, the MLSS on the futsal_circuit was performed. LM intensity (test=7.7±0.3 km.h; retest=7.7±0.4 km.h) showed a concordance (CV=4.13 and ET=0.32) on study A. No significant differences, high association (r=0.80; p<0.05) and concordance (lower limits: -0.58 km.h; Upper limits: 0.55 km.h) between LM and MLSS (7.5±0.5 km.h LM; 7.5±0.4 km.h MLSS) on study B. According to the results, we can conclude that the Futsal_circuit is reliable, reproducible and valid for assessing the functional aerobic capacity of futsal players.

Game Running Performance and Fitness in Women’s Futsal

“…Finally, the lack of specific skills in the selected fitness tests could also be attributed to the absence of more significant relationships. On the other hand, only recent attempts have been made to develop and assess the validity (i. e. concurrent) of such tests involving ball manipulation in a futsal context (i. e. futsal-circuit) but against own indices (i. e. lactate minimum and maximal lactate steady state measures) [49].…”

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

“…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.…”

Predicting Maximal Lactate Steady State from Carminatti’s Shuttle Run Test in Soccer Players

“…Additionally, the determination of MLSS in the current study was derived from a very specific pattern of exercise, similar in nature to soccer. Previously, Barbieri et al [13] used a circuit with ball driving in futsal; Loures et al [14] used the Hoff Circuit designed for soccer, and in other studies, the MLSS and estimates were determined using continuous running on a treadmill or outdoor track [12,15,16]. It is important to note that in the present study, as the MLSS was determined using the intermittent model, the exercise intensity at MLSS is higher than in the MLSS determined using the continuous model [27,28].…”

“…The MLSS is not a practical and accessible measure, especially in team sports such as soccer, because it involves several bouts at different speeds on different days, and this modality involves a high number of athletes [9,10]. Previously, the prediction of MLSS was conducted in soccer players by using invasive procedures or multiple trials procedures [12][13][14][15][16]. Additionally, the determination of MLSS in the current study was derived from a very specific pattern of exercise, similar in nature to soccer.…”

“…In short, the continuous MLSS determination is based on several 30-min trials performed on different days, including blood [La − ] samples [10], which makes it more impractical and not widely accessible. In an attempt to make it easier to determine MLSS with 1-day tests and/or without any invasive procedures, studies of MLSS prediction in soccer players have focused on critical speed [12], [La − ] minimum test [13], [La − ]-derived thresholds [12,14,15], and use of field incremental test parameters [16]. However, those studies determined the MLSS during continuous exercise models (pauses only for [La -] sample) [12][13][14][15][16], which is not in accordance with the specificity regarding the intermittent character of soccer.…”