Chorley Alan, Bott Richard P, Marwood Simon, Lamb Kevin L
Department of Sport and Exercise Sciences, University of Chester, Chester, CH1 4BJ, UK.
School of Health Sciences, Liverpool Hope University, Liverpool, L16 9JD, UK.
Eur J Appl Physiol. 2020 Nov;120(11):2349-2359. doi: 10.1007/s00421-020-04459-6. Epub 2020 Aug 9.
This study examined the relationship of physiological and anthropometric characteristics with parameters of the critical power (CP) model, and in particular the reconstitution of W' following successive bouts of maximal exercise, amongst trained and untrained cyclists.
Twenty male adults (trained nine; untrained 11; age 39 ± 15 year; mass 74.7 ± 8.7 kg; V̇O 58.0 ± 8.7 mL kg min) completed three incremental ramps (20 W min) to exhaustion interspersed with 2-min recoveries. Pearson's correlation coefficients were used to assess relationships for W' reconstitution after the first recovery (W'), the delta in W' reconstituted between recoveries (∆W') CP and W'.
CP was strongly related to V̇O for both trained (r = 0.82) and untrained participants (r = 0.71), whereas W' was related to V̇O when both groups were considered together (r = 0.54). W' was strongly related to V̇O for the trained (r = 0.81) but not untrained (r = 0.18); similarly, ∆W' was strongly related to V̇O (r = - 0.85) and CP (r = - 0.71) in the trained group only.
Notable physiological relationships between parameters of aerobic fitness and the measurements of W' reconstitution were observed, which differed among groups. The amount of W' reconstitution and the maintenance of W' reconstitution that occurred with repeated bouts of maximal exercise were found to be related to key measures of aerobic fitness such as CP and V̇O. This data demonstrates that trained cyclists wishing to improve their rate of W' reconstitution following repeated efforts should focus training on improving key aspects of aerobic fitness such as V̇O and CP.
本研究探讨了训练有素和未经训练的自行车运动员的生理和人体测量学特征与临界功率（CP）模型参数之间的关系，特别是连续多次最大运动后W’的恢复情况。
20名成年男性（训练有素的9名；未经训练的11名；年龄39±15岁；体重74.7±8.7kg；摄氧量58.0±8.7mL·kg·min）完成三次递增斜坡运动（20W/min）直至力竭，每次运动之间穿插2分钟恢复时间。使用Pearson相关系数评估第一次恢复后的W’恢复情况（W’）、恢复期间W’恢复的变化量（∆W’）、CP与W’之间的关系。
对于训练有素的参与者（r = 0.82）和未经训练的参与者（r = 0.71），CP与摄氧量均密切相关；而将两组参与者综合考虑时，W’与摄氧量相关（r = 0.54）。对于训练有素的参与者，W’与摄氧量密切相关（r = 0.81），但未经训练的参与者则不然（r = 0.18）；同样，仅在训练有素的组中，∆W’与摄氧量（r = -0.85）和CP（r = -0.71）密切相关。
观察到有氧适能参数与W’恢复测量值之间存在显著的生理关系，且不同组之间存在差异。发现多次最大运动后W’的恢复量以及W’恢复的维持情况与CP和摄氧量等有氧适能关键指标有关。这些数据表明，希望在多次运动后提高W’恢复率的训练有素的自行车运动员应将训练重点放在改善有氧适能的关键方面，如摄氧量和CP。
