Are Previous Joint Injuries Associated with Muscle Performance in Volleyball Athletes?
*.
Rev Bras Ortop 2023;
58:36-41. [PMID:
36969780 PMCID:
PMC10038711 DOI:
10.1055/s-0042-1745801]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 02/07/2022] [Indexed: 03/26/2023] Open
Abstract
Objective
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.
Methods
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).
Results
The results of the ROC curve analysis indicated that hamstring fatigue index values at 300
o
/s were associated with the presence of previous knee injury (area under the curve [AUC] = 73%,
p
= 0.004), and shoulder external rotators fatigue index values at 360°/s were not associated with the presence of previous shoulder injury (AUC = 68%,
p
= 0.053).
Conclusions
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.
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