The Anterior Cruciate Ligament Can Become Hypertrophied in Response to Mechanical Loading: A Magnetic Resonance Imaging Study in Elite Athletes.
The Anterior Cruciate Ligament Can Become Hypertrophied in Response to Mechanical Loading: A Magnetic Resonance Imaging Study in Elite Athletes.
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DOI：
10.1177/03635465211012354
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发表时间：
2021-07
期刊：
影响因子：
--
通讯作者：
Wojtys EM
中科院分区：
文献类型：
--
作者：
Beaulieu ML;DeClercq MG;Rietberg NT;Li SH;Harker EC;Weber AE;Ashton-Miller JA;Wojtys EM
主要来自动物模型的证据表明，青春期生长期间的运动可以使前交叉韧带（ACL）肥大并改善其力学性能。在人类中，ACL肥大的唯一证据来自于一项针对精英举重运动员和对照组参与者的小型横断面研究，该研究存在方法学缺陷;因此需要更多证据。在习惯性单腿负重多于另一条腿的运动员中，我们研究了ACL横截面积（CSA）的双侧差异，以寻找单侧肥大的证据。横截面研究我们招募了52名花样滑冰运动员和跳板跳水运动员（46名女性，6名男性;平均年龄：20.2 ± 2.7岁），因为前者总是在同一条腿上跳，而后者总是在跨栏时用同一条腿进入板。所有参与者的运动训练都在青春期之前开始，并持续到青春期前后。使用轴位和矢状位磁共振图像，我们分别测量了ACL CSA和髌腱前后径。此外，使用测力计获得等长和等速膝关节伸肌和屈肌峰值扭矩。通过双侧配对样本t检验评价ACL CSA、髌腱直径和膝关节肌力的双侧差异。还检查了ACL CSA的双侧差异与训练开始年龄之间的相关性以及ACL CSA的双侧差异与训练年限之间的相关性。着陆/驱动腿的ACL CSA以及PT直径显著大于对侧腿（ACL：差异%= 4.9 ± 14.0%，p = 0.041; PT：差异%= 4.7 ± 9.4%，p = 0.002）。然而，ACL CSA的双侧差异百分比与训练开始或训练年限无关。最后，着地/驱动腿的等长膝屈肌峰值扭矩显著大于对侧膝关节（%差异= 14.5 ± 33.8%; p = 0.019）。在青春期之前、期间和之后习惯性地一条腿比另一条腿负荷更多的运动员表现出显著的单侧ACL肥大。这项研究表明，前交叉韧带可能是能够“训练”的运动员。如果操作正确，它可以帮助降低ACL损伤的风险。
Evidence, mainly from animal models, suggests that exercise during periods of pubertal growth can hypertrophy the anterior cruciate ligament (ACL) and improve its mechanical properties. In humans, the only evidence of ACL hypertrophy comes from a small cross-sectional study of elite weightlifters and control participants with methodological weaknesses; therefore more evidence is needed. In athletes who have habitually loaded one leg more than the other, we investigated bilateral differences in ACL cross-sectional area (CSA) for evidence of unilateral hypertrophy. Cross-sectional study We recruited 52 figure skaters and springboard divers (46 females, 6 males; mean age: 20.2 ± 2.7 yrs) because the former always land jumps on the same leg, while the latter always drive the same leg into the board during their hurdle approach. Sport training for all participants began prior to puberty and continued through and after. Using oblique-axial- and oblique-sagittal-plane magnetic resonance images, we measured the ACL CSA and the anteroposterior diameter of the patellar tendon, respectively. In addition, isometric and isokinetic knee extensor and flexor peak torques were acquired using a dynamometer. Bilateral differences in ACL CSA, patellar tendon diameter, and knee muscle strength were evaluated via two-sided paired-sample t-tests. Correlations between the bilateral difference in the ACL CSA and age of training onset as well as between the bilateral difference in the ACL CSA and years of training were also examined. Significantly larger ACL CSAs, as well as PT diameter, were found in the landing/drive leg than in the contralateral leg (ACL: % difference = 4.9 ± 14.0%, p = 0.041; PT: % difference = 4.7 ± 9.4%, p = 0.002). The percent bilateral difference in ACL CSA, however, was not associated with training onset or years of training. Lastly, isometric knee flexor peak torques were significantly greater in the landing/drive leg than the contralateral knee (% difference = 14.5 ± 33.8%; p = 0.019). Athletes who habitually loaded one leg more than the other prior to, during and after puberty exhibited significant unilateral ACL hypertrophy. This study suggests that the ACL may be able to be ‘trained’ in athletes. If done correctly, it could help lower the risk for ACL injury.
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影响因子：
3
作者：
DeFreitas, Jason M.;Beck, Travis W.;Kasishke, Paul R., II
通讯作者：
Kasishke, Paul R., II
影响因子：
1.9
作者：
Nagano, Yasuharu;Ida, Hirofumi;Fukubayashi, Toru
通讯作者：
Fukubayashi, Toru
影响因子：
4.8
作者：
CABAUD, HE;CHATTY, A;FELTMAN, RJ
通讯作者：
FELTMAN, RJ
DOI：
10.1097/mco.0b013e32833781b5
发表时间：
2010-05
影响因子：
3.1
作者：
McCarthy JJ;Esser KA
通讯作者：
Esser KA
影响因子：
2.7
作者：
Grzelak, Piotr;Podgorski, Micha;Stefanczyk, Ludomir;Krochmalski, Marek;Domzalski, Marcin
通讯作者：
Domzalski, Marcin