Attia Ahmed, Hachana Younes, Chaabène Helmi, Gaddour Abdelmajid, Neji Zied, Shephard Roy J, Chelly Mohamed Souhaiel
Research Unit « Sport Performance & Health», High Institute of Sport and Physical Education of Ksar Saîd, University of "Manouba", Tunis, Tunisia; High Institute of Sport and Physical Education of Ksar Said, University of "Manouba", Tunis, Tunisia.
Faculty of Kinesiology and Physical Education, University of Toronto, Toronto, Ontario, Canada.
PLoS One. 2014 Dec 4;9(12):e114444. doi: 10.1371/journal.pone.0114444. eCollection 2014.
The intent of this study was to evaluate relative and absolute reliability of the 20-s anaerobic test (WAnT20) versus the WAnT30 and to verify how far the various indices of the 30-s Wingate anaerobic test (WAnT30) could be predicted from the WAnT20 data in male athletes. The participants were Exercise Science majors (age: 21.5±1.6 yrs, stature: 0.183±0.08 m, body mass: 81.2±10.9 kg) who participated regularly in team sports. In Phase I, 41 participants performed duplicate WAnT20 and WAnT30 tests to assess reliability. In Phase II, 31 participants performed one trial each of the WAnT20 and WAnT30 to determine the ability of the WAnT20 to predict components of the WAnT30. In Phase III, 31 participants were used to cross-validate the prediction equations developed in Phase II. Respective intra-class correlation coefficients (ICC) for peak power output (PPO) (ICC = 0.98 and 0.95) and mean power output (MPO) (ICC 0.98 and 0.90) did not differ significantly between WAnT20 and WAnT30. ICCs for minimal power output (POmin) and fatigue index (FI) were poor for both tests (range 0.53 to 0.76). Standard errors of the means (SEM) for PPO and MPO were less than their smallest worthwhile changes (SWC) in both tests; however, POmin and FI values were "marginal," with SEM values greater than their respective SWCs for both tests values. Stepwise regression analysis showed that MPO had the highest coefficient of predictability (R = 0.97), with POmin and FI considerable lower (R = 0.71 and 0.41 respectively). Cross-validation showed insignificant bias with limits of agreement of 0.99±1.04, 6.5±92.7 W, and 1.6±9.8% between measured and predicted MPO, POmin, and FI, respectively. WAnT20 offers a reliable and valid test of leg anaerobic power in male athletes and could replace the classic WAnT30.
本研究旨在评估20秒无氧测试（WAnT20）相对于30秒无氧测试（WAnT30）的相对可靠性和绝对可靠性，并验证从男性运动员的WAnT20数据中能在多大程度上预测30秒温盖特无氧测试（WAnT30）的各项指标。参与者为经常参加团队运动的运动科学专业学生（年龄：21.5±1.6岁，身高：0.183±0.08米，体重：81.2±10.9千克）。在第一阶段，41名参与者进行了两次重复的WAnT20和WAnT30测试以评估可靠性。在第二阶段，31名参与者分别进行了一次WAnT20和WAnT30测试，以确定WAnT20预测WAnT30各项指标的能力。在第三阶段，31名参与者用于交叉验证在第二阶段建立的预测方程。WAnT20和WAnT30之间，峰值功率输出（PPO）的类内相关系数（ICC）（ICC = 0.98和0.95）以及平均功率输出（MPO）的类内相关系数（ICC 0.98和0.90）无显著差异。两种测试中最小功率输出（POmin）和疲劳指数（FI）的ICC均较差（范围为0.53至0.76）。两种测试中PPO和MPO的均值标准误（SEM）均小于其最小有价值变化（SWC）；然而，POmin和FI值处于“临界”状态，两种测试中SEM值均大于各自的SWC。逐步回归分析表明，MPO具有最高的可预测系数（R = 0.97），POmin和FI则低得多（分别为R = 0.71和0.41）。交叉验证显示，测量值与预测值之间的MPO、POmin和FI的偏差不显著，一致性界限分别为0.99±1.04、6.5±92.7瓦和1.6±9.8%。WAnT20为男性运动员腿部无氧功率提供了可靠且有效的测试，可替代经典的WAnT30。
