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• Clinical Article •
A magnetic resonance imaging study of the influence of runner-related factors on the cross-sectional area of thigh muscles in male amateur marathon runners
ZHOU Jing  ZHENG Xiaozhong  YAO Wanzhen  CHEN Leilei  DING Jianping 

Cite this article as: Zhou J, Zheng XZ, Yao WZ, et al. A magnetic resonance imaging study of the influence of runner-related factors on the cross-sectional area of thigh muscles in male amateur marathon runners[J]. Chin J Magn Reson Imaging, 2021, 12(5): 40-43. DOI:10.12015/issn.1674-8034.2021.05.009.


[Abstract] Objective To evaluate cross sectional area (CSA) of male amateur marathon runners in front, middle and back legs, and explore the correlation between them and age, body mass index (BMI), running age, speed exercise, and monthly exercise. Materials andMethods To recruit standard male amateur marathon runners, 64 male 15 healthy volunteers, and often do not exercise will not exercise regularly male healthy volunteers set as group A, the other selected 15 with A height (less than 5 cm), age group (3 years), weight (3 kg) and BMI (1 points) that match the male amateur marathon runner set as group B. All subjects underwent bilateral axial mri scans of their thighs, and the cross-sectional areas of different muscle groups were delineated on T1WI images.Results The anterior muscle CSA of group A (63.16±7.38) cm was lower than that of group B (72.05±8.34) cm, the difference was statistically significant (P＜0.01). The CSA of posterior group A and medial group was (31.16±4.78) cm and (46.06±7.06) cm, respectively, lower than that of group B (33.07±4.05) cm and (49.51±6.87) cm, with no statistical significance (P values were 0.248 and 0.186, respectively). Among the factors of male amateur marathon runners' age, BMI, running age, pace and monthly running amount, only BMI was positively correlated with CSA of all muscle groups, and the correlation was statistically significant.Conclusion Long-term running exercises can increase the cross-sectional area of the anterior thigh muscles. Long-term endurance running training may counteract the effects of age on muscles. There was no significant correlation between running-related age, pace, and monthly running amount and thigh muscle cross-sectional area.
[Keywords] amateur marathon runner；running；thigh muscles；magnetic resonance imaging；cross-sectional area

ZHOU Jing   ZHENG Xiaozhong   YAO Wanzhen   CHEN Leilei   DING Jianping*  

Department of Radiology, the Affiliated Hospital of Hangzhou Normal University, Hangzhou 310015, China

Ding JP, E-mail: jpding@vip.sina.com

Conflicts of interest   None.

ACKNOWLEDGMENTS The Medical and Health Science & Technology Project of Zhejiang Province (No. 2020KY711).
Received  2020-12-01
Accepted  2021-03-25
DOI: 10.12015/issn.1674-8034.2021.05.009
Cite this article as: Zhou J, Zheng XZ, Yao WZ, et al. A magnetic resonance imaging study of the influence of runner-related factors on the cross-sectional area of thigh muscles in male amateur marathon runners[J]. Chin J Magn Reson Imaging, 2021, 12(5): 40-43. DOI:10.12015/issn.1674-8034.2021.05.009.

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