Arnason Kari, Agustsson Atli, Fredriksen Hilde, Rafnsson Elis Thor, Briem Kristin
Department of physical therapy - Research centre of movement science - Faculty of medicine University of Iceland.
, Department of physical therapy - Research centre of movement science - Faculty of medicine University of Iceland.
Int J Sports Phys Ther. 2024 Dec 1;19(12):1541-1550. doi: 10.26603/001c.126187. eCollection 2024.
Little is known about the influence of kinetic chain strength and power on shoulder problems in handball players or the impact of participation-related shoulder load (PSL) during a season. Suboptimal activity of the kinetic chain during throwing might make the shoulder more vulnerable.
The purpose of this study was to assess 1) the association between pre-season measurements and shoulder problems among handball players and 2) whether pre-season strength and power influence the association between PSL and severity of shoulder problems.
Prospective observational cohort study.
Pre-season measurements were done using the Isometric mid-thigh pull for lower body strength, a seated test for trunk rotation power (TRP) and isometric testing of external (ER) and internal rotation shoulder strength on 42 male players. Shoulder problems (prevalence, substantial prevalence, and severity score) were documented weekly through a season (31 weeks) with The Oslo Sports Trauma Research Center Overuse Questionnaire (OSTRC-O2) and PSL with the modified Borg rate of perceived exertion scale. Spearman´s correlation coefficient was applied to examine the association within the first aim, while a mixed model ANOVA was conducted to analyze the second aim.
A weak and negative correlation (rs=-0.34) was found between pre-season ER strength and the individual prevalence of shoulder problems (p=0.029). A main effect was found between PSL and the OSTRC-O2 severity score (p=<0.001) with higher severity scores observed with increased PSL. A significant interaction was found between PSL and pre-season TRP regarding their influence on the OSTRC-02 severity score (p=0.017). With higher PSL, a higher severity score was observed among players with pre-season TRP more than one standard deviation below the group's mean.
The results indicate that low TRP may make the throwing shoulder more vulnerable to an increase in load. Looking beyond shoulder strength and load may therefore be important.
关于动力链强度和力量对手球运动员肩部问题的影响,或赛季中与参与相关的肩部负荷(PSL)的影响,目前知之甚少。投掷过程中动力链的活动不理想可能会使肩部更容易受伤。
本研究的目的是评估1)季前测量与手球运动员肩部问题之间的关联,以及2)季前力量和力量是否会影响PSL与肩部问题严重程度之间的关联。
前瞻性观察队列研究。
对42名男性运动员进行季前测量,使用等长中大腿拉力测试下肢力量,坐位测试躯干旋转力量(TRP),以及肩部外旋(ER)和内旋力量的等长测试。在一个赛季(31周)中,每周通过奥斯陆运动创伤研究中心过度使用问卷(OSTRC-O2)记录肩部问题(患病率、显著患病率和严重程度评分),并使用改良的博格自觉用力程度量表记录PSL。采用斯皮尔曼相关系数检验第一个目标中的关联,同时进行混合模型方差分析以分析第二个目标。
季前ER力量与肩部问题的个体患病率之间存在弱负相关(rs=-0.34)(p=0.029)。发现PSL与OSTRC-O2严重程度评分之间存在主效应(p<0.001),PSL增加时严重程度评分更高。发现PSL与季前TRP之间在对OSTRC-02严重程度评分的影响方面存在显著交互作用(p=0.017)。在PSL较高的情况下,季前TRP低于组均值一个标准差以上的运动员中观察到更高的严重程度评分。
结果表明,低TRP可能使投掷肩部更容易受到负荷增加的影响。因此,超越肩部力量和负荷进行观察可能很重要。
3级。