Kalva-Filho Carlos Augusto, Toubekis Argyris, Zagatto Alessandro Moura, da Silva Adelino Sanchez Ramos, Loures João Paulo, Campos Eduardo Zapaterra, Papoti Marcelo
1 University of São Paulo.
2 National and Kapodistrian University of Athens.
Pediatr Exerc Sci. 2018 Aug 1;30(3):383-392. doi: 10.1123/pes.2016-0247. Epub 2018 Mar 27.
To test the reliability and validity of tethered swimming lactate minimum test in young swimmers.
Lactate minimum test was performed twice to test the reliability (experiment 1; n = 13). In addition, the validity was investigated through lactate minimum test relationships with tethered swimming lactate threshold and peak force obtained during graded exercise test (experiment 2; n = 11). Finally, the correlations with mean speeds observed during 200-m (s200m) and 30-minute continuous efforts (s30min) were also analyzed (experiment 3; n = 15). In all experiments, the lactate minimum test began with 3-minute all-out effort to induce lactatemia, followed by an exhaustive graded exercise test.
The lactate minimum intensity and mean force during the entire 3-minute all-out effort (MF) showed high reliability (coefficient of variation < 8.9% and intraclass correlation coefficient > .93). The lactate minimum intensity was not different compared with lactate threshold (P = .22), presenting high correlations (r = .92) and agreement (95% limits of agreement = ±7.9 N). The mean force during the entire 3-minute all-out effort was similar to peak force obtained during graded exercise test (P = .41), presenting significant correlations (r = .88) and high indices of agreement (95% limits of agreement = ±11.3 N). In addition, lactate minimum test parameters correlated both with mean speeds observed during 200-m (r > .74) and 30-minute continuous efforts (r > .70).
Thus, tethered swimming lactate minimum test can be used for training recommendations and to monitor aerobic adaptations in young swimmers.
测试束缚游泳乳酸最低值测试在年轻游泳运动员中的可靠性和有效性。
进行两次乳酸最低值测试以检验可靠性（实验1；n = 13）。此外，通过乳酸最低值测试与束缚游泳乳酸阈值以及分级运动测试中获得的峰值力量之间的关系来研究有效性（实验2；n = 11）。最后，还分析了与200米（s200m）和30分钟持续运动中观察到的平均速度的相关性（实验3；n = 15）。在所有实验中，乳酸最低值测试开始时先进行3分钟全力运动以诱导血乳酸升高，随后进行力竭性分级运动测试。
整个3分钟全力运动期间的乳酸最低强度和平均力量（MF）显示出高可靠性（变异系数<8.9%，组内相关系数>.93）。乳酸最低强度与乳酸阈值相比无差异（P = 0.22），呈现出高相关性（r = 0.92）和一致性（95%一致性界限 = ±7.9 N）。整个3分钟全力运动期间的平均力量与分级运动测试中获得的峰值力量相似（P = 0.41），呈现出显著相关性（r = 0.88）和高一致性指标（95%一致性界限 = ±11.3 N）。此外，乳酸最低值测试参数与200米（r > 0.74）和30分钟持续运动中观察到的平均速度均相关（r > 0.70）。
因此，束缚游泳乳酸最低值测试可用于训练建议，并监测年轻游泳运动员的有氧适应性。
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