高强度CrossFit®训练中两种厌氧能评估方法的利弊

Manoel Rios, V. Reis, Susana Soares, D. Moreira-Gonçalves, R. Fernandes
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摘要

目前的研究旨在证明两种间接方法的优势和劣势,以评估厌氧半乳糖对特定CrossFit®锻炼的贡献。30名经验丰富的交叉训练者以最大强度进行Fran训练,并在恢复期使用遥测便携式气体分析仪收集通气数据,以评估非动力学快速成分(Anarecovery)的摄氧量(VO2)。最大磷酸肌酸裂解(AnaPCr)的动力学是根据文献确定的。两种方法之间没有观察到差异(Anarecovery和AnaPCr分别为31.4±4.0和30.4±4.1 kJ)。尽管在两种方法中都存在一些注意事项(例如,分别由VO2恢复开始时的延迟和每公斤湿肌磷酸肌酸浓度给定值的假设得出的误差),数据表明,它们产生了类似的结果,并允许从短时间和高强度的CrossFit®程序中估计星系能量的贡献。目前的数据有助于CrossFit®锻炼评估和训练策略,帮助研究人员更准确地评估交叉训练。目前研究中使用的两种方法的优点是它们是非侵入性的,与肌肉活检有很大不同。
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Pros and Cons of Two Methods of Anaerobic Alactic Energy Assessment in a High-Intensity CrossFit® Workout
The current study aimed to evidence the strengths and weaknesses of two indirect methods for assessing the anaerobic alactic contribution to a specific CrossFit® workout. Thirty experienced crossfitters performed the Fran workout at maximal intensity, and ventilatory data were collected during the recovery period using a telemetric portable gas analyser to assess the oxygen uptake (VO2) of the off-kinetics fast component (Anarecovery). The kinetics of maximal phosphocreatine splitting (AnaPCr) were determined based on the literature. No differences between the two methods were observed (31.4 ± 4.0 vs. 30.4 ± 4.1 kJ for Anarecovery and AnaPCr, respectively). Despite the existence of some caveats (e.g., errors derived from a delay at the onset of VO2 recovery and the assumption of given values in the concentration of phosphocreatine per kilogram of wet muscle, respectively) in both methods, the data indicate that they yield similar results and allow for estimations of alactic energy contribution from a short-duration and high intensity CrossFit® routine. The current data contributes to CrossFit® workout evaluations and training strategies, helping researchers to evaluate crossfitters more accurately. The advantage of the two methods used in the current study is that they are non-invasive, which differs greatly from muscle biopsies.
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