Araujo Marcus P, Nóbrega Antônio C L, Espinosa Gabriel, Hausen Matheus R, Castro Renata R T, Soares Pedro P, Gurgel Jonas L
1Graduate Program on Cardiovascular Sciences, Medical Science Center, Fluminense Federal University (UFF), Rio de Janeiro, Brazil; 2Biomechanics Research Group (GPBIO), Physical Education Institute, Fluminense Federal University (UFF), Rio de Janeiro, Brazil; and 3Biological and Health Science College, Iguaçu University (UNIG), Nova Iguaçu, Brazil.
J Strength Cond Res. 2017 Jun;31(6):1525-1535. doi: 10.1519/JSC.0000000000001312.
The objective of this study is to evaluate the cardiorespiratory variables of Taekwondo athletes while performing incremental exercise test on an ergometer using a ramp protocol and to propose a specific protocol for assessing these physiological variables during Taekwondo practice. Fourteen athletes participated in 2 incremental exercise tests: a treadmill exercise test (TREADtest) and a Taekwondo-specific exercise test (TKDtest). The TKDtest consists in 1-minute stages of kicks with an incremental load between then. The subjects perform kicks each time a sound signal was heard. Heart rate (HR), oxygen uptake (V[Combining Dot Above]O2), and their reserve correspondents (V[Combining Dot Above]O2R and reserve heart rate [HRR]) were divided into quartiles to verify their kinetics along the tests. Significant difference between 2 tests was found only for V[Combining Dot Above]O2R (p = 0.03). Regarding the quartiles, significant differences were found for HR in the first (p = 0.030) and second (p = 0.003). Analyzing the regression curves, significant differences were found for HR for intercept (p = 0.01) and slope (p = 0.05) and HRR for slope (p = 0.02). Analysis showed that significant reliability, with intraclass correlation coefficient (ICC), was found for the V[Combining Dot Above]O2peak (ICC = 0.855, p = 0.003), V[Combining Dot Above]O2 in ventilatory thresholds 1 (ICC = 0.709, p = 0.03) and 2 (ICC = 0.848, p = 0.003). Bland-Altman analyses reported a mean difference ± the 95% limits of agreement of 2.2 ± 8.4 ml·kg·min to V[Combining Dot Above]O2peak. The TKDtest is reliable for measurement of cardiorespiratory variables, and the behavior of these variables differs mainly from TREADtest, probably because of the motor task performed.
本研究的目的是评估跆拳道运动员在使用斜坡方案在测力计上进行递增运动测试时的心肺变量，并提出一种在跆拳道练习期间评估这些生理变量的特定方案。14名运动员参加了2次递增运动测试：跑步机运动测试（TREADtest）和特定于跆拳道的运动测试（TKDtest）。TKDtest包括每次踢腿1分钟的阶段，其间负荷递增。受试者每次听到声音信号时进行踢腿。心率（HR）、摄氧量（V̇O₂）及其储备对应值（V̇O₂R和储备心率[HRR]）被分为四分位数，以验证它们在测试过程中的动力学。仅在V̇O₂R方面发现2次测试之间存在显著差异（p = 0.03）。关于四分位数，在第一个（p = 0.030）和第二个（p = 0.003）四分位数中发现HR存在显著差异。分析回归曲线时，发现HR在截距（p = 0.01）和斜率（p = 0.05）以及HRR在斜率（p = 0.02）方面存在显著差异。分析表明，对于V̇O₂峰值（组内相关系数[ICC] = 0.855，p = 0.003）、通气阈值1（ICC = 0.709，p = 0.03）和2（ICC = 0.848，p = 0.003）中的V̇O₂，发现了具有显著可靠性。Bland-Altman分析报告V̇O₂峰值的平均差异±95%一致性界限为2.2±8.4 ml·kg·min。TKDtest对于心肺变量的测量是可靠的，并且这些变量的行为主要与TREADtest不同，可能是由于所执行的运动任务。
