Li B, Zhang H B, Yu Y C, Hu P P, Yang C X, Zhang H M, Gao F
Department of Ultrasonography, Affiliated Hospital of Hangzhou Normal University, Hangzhou 310015, China.
Zhonghua Yi Xue Za Zhi. 2022 Mar 8;102(9):654-658. doi: 10.3760/cma.j.cn112137-20210625-01438.
To analyze the changes of patellar tendon elasticity quantitatively of amateur marathon runners by shear wave elastography (SWE) in a half marathon. A total of 47 amateur marathon runners (31 males and 16 females, aged from 20 to 44 years) were enrolled as the marathon group, and divided into dominant side (47 patellar tendons) and non-dominant side (47 patellar tendons). Grey-scale ultrasound and SWE were performed on the bilateral patellar tendons before and after the half marathon within 2 h and after a period of 1 week. Thirty healthy volunteers (18 males and 12 females, aged from 22 to 39 years) were enrolled as the control group, the SWE-values derived from the patellar tendon were collected and analyzed. Multivariate logistic regression was performed to analyze the relationship between the changes of SWE-values and running age as well as weekly amount of running. None of any runners showed knee pain and sports injury during the test. The dominant side had a higher SWE-values than non-dominant side in marathon group before running [(55.1±15.7) kPa vs (43.8±15.9) kPa, <0.05]. The marathon group had higher SWE-values than the control group both in dominant side [(55.1±15.7) kPa vs (18.5±3.7) kPa] and non-dominant side [(43.8±15.9) kPa vs (17.4±3.2) kPa], respectively, before running (<0.05). The SWE-values increased significantly both in dominant side [(80.2±23.2) kPa vs (55.1±15.7) kPa] and non-dominant side [(76.5±26.6) kPa vs (43.8±15.9) kPa] 2 h after running in marathon group. After a week, the SWE-values were not statistically different from those before running (>0.05). Multivariate logistic regression showed that running age and weekly amount of running were related factors leading to the increase of SWE-values after running. The patellar tendon of amateur marathon runners has higher SWE-values. SWE can dynamically evaluate the changes of patellar tendon during exercise and is helpful for runners in scientific training and avoiding sports injury.
通过剪切波弹性成像（SWE）分析半程马拉松业余马拉松运动员髌腱弹性的变化。共纳入47名业余马拉松运动员（男性31名，女性16名，年龄20至44岁）作为马拉松组，并分为优势侧（47条髌腱）和非优势侧（47条髌腱）。在半程马拉松前后2小时内及1周后，对双侧髌腱进行灰阶超声和SWE检查。纳入30名健康志愿者（男性18名，女性12名，年龄22至39岁）作为对照组，收集并分析髌腱的SWE值。采用多因素logistic回归分析SWE值变化与跑步年限以及每周跑步量之间的关系。测试期间，所有跑步者均未出现膝关节疼痛和运动损伤。马拉松组跑步前优势侧的SWE值高于非优势侧[（55.1±15.7）kPa对（43.8±15.9）kPa，P<0.05]。马拉松组跑步前优势侧[（55.1±15.7）kPa对（18.5±3.7）kPa]和非优势侧[（43.8±15.9）kPa对（17.4±3.2）kPa]的SWE值均高于对照组（P<0.05）。马拉松组跑步后2小时优势侧[（80.2±23.2）kPa对（55.1±15.7）kPa]和非优势侧[（76.5±26.6）kPa对（43.8±15.9）kPa]的SWE值均显著升高。1周后，SWE值与跑步前相比无统计学差异（P>0.05）。多因素logistic回归显示，跑步年限和每周跑步量是导致跑步后SWE值升高的相关因素。业余马拉松运动员的髌腱具有较高的SWE值。SWE可动态评估运动过程中髌腱的变化，有助于跑步者进行科学训练并避免运动损伤。
