These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: [Magnetic resonance imaging analysis on the effect of marathon on the dynamic changes of morphological characteristics of patellar tendon in amateur marathon runners after half marathon].
    Author: Zhang Y, Zhou J, Zheng XZ, Ding JP, Shu DB, Chen LL, Lin XY, Tian T.
    Journal: Zhonghua Yi Xue Za Zhi; 2022 Mar 08; 102(9):636-641. PubMed ID: 35249306.
    Abstract:
    Objective: To explore the dynamic changes of morphological characteristics of patellar tendon (PT) in amateur athletes after a half-marathon using magnetic resonance imaging. Methods: A total of 19 male amateur marathon runners with 38 knee joints,aged from 26 to 53(41.5±7.9) years, running for 3 to 18 years, with a weekly running volume of 30-90 km and a monthly running volume of 100-300 km were enrolled and underwent 1.5T MRI scan before the half-marathon, within 3 hours after running and 3 days after running. Ten healthy male volunteers with 20 knee joints, who had never participated in marathon and exercised (including but not limited to running) per week for less than 150 minutes were recruited as the control group, aged from 26 to 54 (39.4±9.1) years. Firstly, the PT signal was qualitatively assessed on fat-suppressed proton density-weighted imaging (fs-PDWI) sequence to observe the presence of patellar tendinitis. Then, the length, proximal, middle and distal cross-sectional area (CSA), and volume of PT were measured using the post-processing tool ITK-SNAP, and the data were standardized. The independent sample t-test was used for comparing. One-way repeated measures analysis of variance was used to analyze the morphological changes of PT before and after half-marathon running. Results: The incidence of asymptomatic patellar tendinitis in amateur marathon runners was 26.3% (5/19). No significant MR signal changes of PT were observed in all runners after running. The proximal CSA in runners group was larger than that in controls [(4.20±0.62) mm2/kg3/4 vs (3.63±0.57) mm2/kg3/4, P<0.05], and there was no significant difference in length, medium and distal CSA and volume(all P>0.05). The length, proximal and distal CSA and volume of PT in runners group increased at 3 h after running [(47.35±3.22) mm vs (46.83±3.35) mm; (102.52±13.03) mm2 vs (98.98±13.14) mm2; (108.67±15.72) mm2 vs (100.27±14.37) mm2; (4 020.36±514.38) mm3 vs (3 826.57±499.23) mm3, all P<0.05]. There was no significant difference between before running and 3 days after running(all P>0.05). The middle CSA were not significantly different among different periods(all P>0.05). Conclusion: Marathon has effect on the normal PT morphology in male amateur marathon runners, showing an increase in proximal CSA. A half-marathon will cause reversible changes in PT length, regional CSA and volume. 目的： 分析半程马拉松运动后业余运动员髌腱形态特征动态变化的MRI表现。 方法： 招募19名男性业余马拉松运动员共38侧髌腱，年龄26~53（41.5±7.9）岁，跑龄3~18年，周跑量30~90 km，月跑量100~300 km，分别于半程马拉松跑前（基线，t0）、跑后3 h内（t1）、跑后3 d（t2）对髌腱进行1.5 T MRI扫描。招募从未参加过马拉松、每周运动（包括但不限于跑步）时长<150 min的男性健康志愿者10名共20侧髌腱作为对照组，年龄26~54（39.4±9.1）岁。首先于脂肪抑制质子密度加权像（fs-PDWI）序列对髌腱信号做定性评估，观察是否存在髌腱炎；然后使用后处理工具ITK-SNAP对髌腱的形态参数［长度及近端、中部、远端横截面积（CSA）、体积］进行测量。形态参数进行标准化处理后采用独立样本t检验与对照组比较二者之间的差异。采用重复测量方差分析比较半程马拉松跑前、跑后的髌腱形态参数变化。 结果： 5名业余运动员出现无症状性髌腱炎，发生率为26.3%（5/19），另外14名业余运动员为正常髌腱。所有运动员在半程马拉松跑后均未观察到髌腱fs-PDWI序列信号发生改变。基线水平时，运动员组正常髌腱的近端CSA大于对照组［（4.20±0.62）mm2/kg3/4比（3.63±0.57）mm2/kg3/4］（P<0.05），长度及中部、远端CSA和体积两组差异均无统计学意义（均P>0.05）。运动员组正常髌腱的长度及近端、远端CSA和体积在半程马拉松跑后3 h较基线时增大［（47.35±3.22）mm比（46.83±3.35）mm，（102.52±13.03）mm2比（98.98±13.14）mm2，（108.67±15.72）mm2比（100.27±14.37）mm2，（4 020.36±514.38）mm3比（3 826.57±499.23）mm3］（均P<0.05）；以上指标在跑后3 d与基线相比差异均无统计学意义（均P>0.05）。中部CSA在跑前跑后各时期差异均无统计学意义（均P>0.05）。 结论： 男性业余马拉松运动员髌腱的近端CSA增大。一次半程马拉松后髌腱长度、区域性CSA及体积产生的变化是可逆的。.
    [Abstract] [Full Text] [Related] [New Search]