Caetano Júnior P C, Castilho M L, Raniero L
1 Department of Health and Physical Education, Universidade Paulista (UNIP), São Paulo, Brazil.
2 Laboratory of Nanosensor, Institute of Research and Development (IP&D), Universidade do Vale do ParaíbaSão Paulo, Brazil.
Percept Mot Skills. 2017 Jun;124(3):649-661. doi: 10.1177/0031512517704340. Epub 2017 Apr 12.
This study compared the effects of an official rugby match and a fatigue test on the salivary cortisol responses of 13 rugby players. We also examined the relationship between this cortisol response and session ratings of perceived exertion (session-RPE). We collected saliva before and after the match and fatigue test and assessed physical effort intensity via session-RPE using a CR-10 scale. We measured cortisol concentration by enzyme-linked immunosorbent assays. Results were greater session-RPE and cortisol concentrations for the rugby match, compared with the fatigue test. There was a significant difference between cortisol concentrations obtained pre- and postmatch ( p < .022) and significant correlations between cortisol response and session-RPE sampling in both the rugby match ( r = .81; p < .001) and fatigue test ( r = .91; p < .001). This study provides evidence of greater perceived effort and higher cortisol concentrations in actual competition versus a fatigue test. Our data further support session-RPE as a relatively inexpensive close correlate of a stress biomarker (cortisol response). Thus, session-RPE can be used by coaches as a valid indication of training loads and adequate recovery time after exertion.
本研究比较了一场正式橄榄球比赛和一次疲劳测试对13名橄榄球运动员唾液皮质醇反应的影响。我们还研究了这种皮质醇反应与主观用力程度（session-RPE）之间的关系。我们在比赛和疲劳测试前后收集唾液，并使用CR-10量表通过session-RPE评估体力消耗强度。我们通过酶联免疫吸附测定法测量皮质醇浓度。结果显示，与疲劳测试相比，橄榄球比赛的session-RPE和皮质醇浓度更高。比赛前后获得的皮质醇浓度存在显著差异（p < 0.022），并且在橄榄球比赛（r = 0.81；p < 0.001）和疲劳测试（r = 0.91；p < 0.001）中，皮质醇反应与session-RPE采样之间均存在显著相关性。本研究提供了证据，表明与疲劳测试相比，实际比赛中的主观用力程度更高，皮质醇浓度也更高。我们的数据进一步支持session-RPE作为应激生物标志物（皮质醇反应）的一种相对廉价的密切相关指标。因此，教练可以将session-RPE用作训练负荷以及运动后恢复时间是否充足的有效指标。
