Bittencourt Natália F N, Amaral Giovanna M, Zuin Alysson L, Mascarenhas Rodrigo de O, Silva Anderson A, Silva Hytalo de J, Mendonça Luciana D
Laboratório de Prevenção e Reabilitação de Lesões Esportivas (LAPREV), Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil.
Pontifícia Universidade Católica de Minas Gerais - PUC Minas, Belo Horizonte, MG, Brasil.
Rev Bras Ortop (Sao Paulo). 2023 Mar 24;58(1):36-41. doi: 10.1055/s-0042-1745801. eCollection 2023 Feb.
The aim of the present study is to determine whether previous shoulder and knee injuries were associated with isokinetic fatigue index and agonist/antagonist ratio of shoulder internal/external rotators and knee flexors/extensors in male volleyball athletes. The current study is a cross-sectional investigation of 49 male elite volleyball players competing at a high level in Brazil. Isokinetic fatigue index and agonist/antagonist profiles were assessed during the preseason. Additionally, in order to record previous injuries, the athletes answered a standardized questionnaire. We conducted a receiver operating characteristic (ROC) curve analysis to determine the association strength and the clinically relevant cut-off point for variables presenting statistical significance for the area under the curve (AUC) (α = 0.05). An independent t-test was used to compare isokinetic variables between athletes with and without previous injury (α = 0.05). The results of the ROC curve analysis indicated that hamstring fatigue index values at 300 /s were associated with the presence of previous knee injury (area under the curve [AUC] = 73%, = 0.004), and shoulder external rotators fatigue index values at 360°/s were not associated with the presence of previous shoulder injury (AUC = 68%, = 0.053). Elite volleyball athletes who reported previous knee injuries were prone to a higher fatigue index than those reporting no injuries. Knee flexor resistance training might be useful for those athletes who reported knee injuries in the previous season.
本研究的目的是确定既往肩部和膝部损伤是否与男性排球运动员等速运动疲劳指数以及肩部内/外旋肌和膝部屈肌/伸肌的 agonist/antagonist 比值相关。 本研究是对49名在巴西高水平比赛的男性精英排球运动员进行的横断面调查。在季前赛期间评估等速运动疲劳指数和 agonist/antagonist 特征。此外，为了记录既往损伤，运动员回答了一份标准化问卷。我们进行了受试者操作特征（ROC）曲线分析，以确定曲线下面积（AUC）具有统计学意义的变量的关联强度和临床相关切点（α = 0.05）。使用独立 t 检验比较有和没有既往损伤的运动员之间的等速运动变量（α = 0.05）。 ROC 曲线分析结果表明，300°/s 时的腘绳肌疲劳指数值与既往膝部损伤的存在相关（曲线下面积 [AUC] = 73%，P = 0.004），而 360°/s 时的肩部外旋肌疲劳指数值与既往肩部损伤的存在无关（AUC = 68%，P = 0.053）。 报告有既往膝部损伤的精英排球运动员比未报告损伤的运动员更容易出现较高的疲劳指数。对于上赛季报告有膝部损伤的运动员，膝部屈肌抗阻训练可能有用。
