BACKGROUND Psychological factors including self-reported readiness to return to sport (RTS) after anterior cruciate ligament reconstruction (ACLR) measured with the Anterior Cruciate Ligament Return to Sport After Injury (ACL-RSI) scale have been shown to correlate with RTS. Physical deficits have been shown to exist in the later stages after ACLR rehabilitation. No previous studies have investigated the relationship between self-reported readiness to RTS and objective physical measures of power and strength. PURPOSE To investigate the relationship between ACL-RSI scores and measures of strength and power scores after ACLR. STUDY DESIGN Case control study; Level of evidence, 3. METHODS This study recruited 452 male athletes who had undergone primary ACLR. Each athlete completed the ACL-RSI questionnaire, isokinetic strength testing, and jump testing approximately 9 months after surgery. RESULTS ACL-RSI scores showed a trivial or weak correlation with strength and power measures at 9 months after surgery (r = 0.06-0.16). Similar results were found for the relationship between ACL-RSI scores and limb symmetry index for strength and power measures (r = 0.04-0.15). Comparing the strength and power measures of athletes with higher (≥90) ACL-RSI scores (n = 93) versus athletes with lower (≤75) ACL-RSI scores (n = 92) showed no significant differences except for isokinetic hamstring strength, but with a trivial effect size (P = .040; effect size = 0.15). CONCLUSION Self-reported readiness to RTS as measured by the ACL-RSI had little or no relationship with athletes' strength and power measures, and there was no meaningful difference in strength and power between athletes with higher and lower ACL-RSI scores at 9 months after ACLR. The findings suggest that psychological recovery and physical recovery after ACLR are different constructs, and strategies to measure and address each construct separately may be necessary to ensure successful RTS after ACLR.

中文翻译：

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前交叉韧带重建后9个月的受伤量表显示，力量和力量得分与前交叉韧带恢复运动之间没有关系。

背景技术已经显示了心理因素，包括自我报告的前十字韧带重建后的运动恢复准备能力（RTR），以及用前十字韧带损伤后的运动恢复能力（ACL-RSI）量表来衡量与RTS的相关性。已显示ACLR康复后的后期存在身体缺陷。以前没有研究调查自我报告的对RTS的准备程度与客观的身体力量和力量度量之间的关系。目的探讨ACLR后ACL-RSI评分与力量和力量评分之间的关​​系。研究设计案例对照研究；证据等级，3。方法该研究招募了452名接受原发性ACLR的男性运动员。每位运动员都完成了ACL-RSI问卷，等速肌力测试，并在手术后约9个月进行跳跃测试。结果术后9个月，ACL-RSI评分与力量和力量测量之间无显着或弱相关性（r = 0.06-0.16）。对于ACL-RSI评分与肢体对称指数的力量和力量测量之间的关系，发现了相似的结果（r = 0.04-0.15）。比较具有较高（≥90）ACL-RSI分数（n = 93）的运动员和具有较低（≤75）ACL-RSI分数（n = 92）的运动员的力量和力量测量，除等速肌腱绳肌力量外，没有显着差异，但影响大小微不足道（P = .040；影响大小= 0.15）。结论根据ACL-RSI进行的自我报告，他们对RTS的准备程度与运动员的力量和力量测量几乎没有关系，ACL后9个月，ACL-RSI得分较高和较低的运动员之间的力量和力量没有显着差异。研究结果表明，ACLR后的心理恢复和身体恢复是不同的构想，分别测量和处理每个构想的策略对于确保ACLR后成功进行RTS可能是必要的。