Jeker David, Gosselin Jonathan, Drouet Jean-Marc, Goulet Eric D B
Department of Kinanthropology, Faculty of Physical Activity Sciences, University of Sherbrooke, Sherbrooke, QC, Canada.
VÉLUS Laboratory, Department of Mechanical Engineering, University of Sherbrooke, Sherbrooke, QC, Canada.
Front Sports Act Living. 2021 Sep 1;3:735046. doi: 10.3389/fspor.2021.735046. eCollection 2021.
The validity and reliability of the Computrainer Lab (CT) was assessed, for the first time, using a high-precision motor-driven calibration rig during simulated variable intensity 40 and 100 km time-trials (TTs). The load patterns imposed by the CT were designed from previously published studies in trained cyclists and included multiple 1 or 4 km bursts in power output. For the 40 and 100 km TTs, cluster-based analyses revealed a mean measurement error from the true workload of respectively 0.7 and 0.9%. However, measurement errors were dependent upon the workload variations, fluctuating from 0.2 to 5.1%. Average biases between repeated trials were contained within ± 1.1% for both TTs. In conclusion, using 40 and 100 km TTs containing 1 or 4 km bursts in power output, the present results indicate that (1) the CT can reliably be used by scientists to determine differences between research interventions; (2) the CT provides valid results of power output when data are being analyzed as a whole to derive one mean value of power output and; (3) variations in workload make it difficult to determine at any one time the veracity of the true power output produced by the athlete.
首次在模拟的40公里和100公里个人计时赛(TTs)中,使用高精度电机驱动校准装置对Computrainer实验室(CT)的有效性和可靠性进行了评估。CT施加的负荷模式是根据先前发表的针对训练有素的自行车运动员的研究设计的,包括多次1公里或4公里的功率输出爆发。对于40公里和100公里的个人计时赛,基于聚类的分析显示,与真实工作量相比,平均测量误差分别为0.7%和0.9%。然而,测量误差取决于工作量的变化,波动范围为0.2%至5.1%。两次个人计时赛重复试验之间的平均偏差均控制在±1.1%以内。总之,通过40公里和100公里包含1公里或4公里功率输出爆发的个人计时赛,目前的结果表明:(1)科学家可以可靠地使用CT来确定研究干预措施之间的差异;(2)当将数据作为一个整体进行分析以得出功率输出的一个平均值时,CT能提供有效的功率输出结果;(3)工作量的变化使得很难在任何时候确定运动员产生的真实功率输出的准确性。