■患有髌腱病(PT)的运动员有姿势稳定性缺陷;然而,潜在机制和相关因素尚不清楚.减少股四头肌力量对PT姿势稳定性的影响,改变了本体感受,下肢肌肉紧绷,膝盖疼痛,这解释了其他人群的姿势稳定性不足,未经调查。
■本体感觉敏锐度,肌肉紧绷,股四头肌力量,疼痛可预测PT运动员的姿势稳定性。
■横断面比较研究。
■二级。
■共纳入43名PT运动员和43名健康运动员。静态和动态姿势稳定性,本体感觉敏锐度,肌肉紧绷,股四头肌力量,使用力平台评估疼痛,Y平衡试验(YBT),体重辨别协议,测角器,等距测力计,和一份有效的问卷,分别。
■与未患肢(NAL)和对照组(P<0.01)相比,有PT的运动员患肢(AL)的静态和动态姿势稳定性明显较差。患有PT的运动员显示股四头肌力量较低(P<0.01),本体感觉敏锐度(P=0.02),与NAL和对照组相比,AL的肌肉紧密度更高。PT运动员的AL股四头肌无力和疼痛解释了动态姿势稳定性障碍的变化。
■与健康同龄人相比,PT运动员的姿势稳定性不足。我们的结果表明,股四头肌肌无力和疼痛是解释姿势稳定性障碍的因素。
■这些结果不仅可以缓解疼痛,还可以通过阻力训练增强股四头肌,以避免PT运动员随后受伤,从而帮助临床医生设计治疗平衡康复计划。
UNASSIGNED: Athletes with patellar tendinopathy (PT) have postural stability deficits; however, the underlying mechanisms and factors responsible remain unknown. The effect on postural stability in PT of decreased quadriceps strength, altered proprioception, lower-limb muscle tightness, and knee pain, which explain postural stability deficiency in other populations, is uninvestigated.
UNASSIGNED: Proprioceptive acuity, muscle tightness, quadriceps strength, and pain predict postural stability in athletes with PT.
UNASSIGNED: Cross-sectional comparative study.
UNASSIGNED: Level 2.
UNASSIGNED: A total of 43 athletes with PT and 43 healthy athletes were enrolled. Static and dynamic postural stability, proprioceptive acuity, muscle tightness, quadriceps strength, and pain were evaluated using a force platform, Y-balance test (YBT), a weight discrimination protocol, a goniometer, an isometric dynamometer, and a valid questionnaire, respectively.
UNASSIGNED: Athletes with PT had significantly worse static and dynamic postural stability in the affected limb (AL) compared with the nonaffected limb (NAL) (P < 0.01) and the control group (P < 0.01). Athletes suffering from PT revealed lower quadriceps strength (P < 0.01), proprioceptive acuity (P = 0.02), and higher muscle tightness in the AL compared with the NAL and controls. Quadriceps weakness of the AL and pain in athletes with PT explained the variance of dynamic postural stability impairment.
UNASSIGNED: Athletes with PT have postural stability deficiency compared with healthy peers. Our results demonstrate that quadriceps muscle weakness and pain are the factors that explain postural stability impairment.
UNASSIGNED: These results can assist clinicians in the design of therapeutic balance rehabilitation programs by acting not only on pain relief but also on quadriceps strengthening through resistance training to avoid subsequent injuries in athletes with PT.