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使用超声弹性成像评估体重指数和举重对肱二头肌和远端肱二头肌腱硬度的影响。

Influence of body mass index and weight lifting on bicep brachii muscle and distal bicep tendon stiffness evaluated using ultrasound elastography.

机构信息

Biomedical Technology Department, College of Applied Medical Sciences, King Saud University, Riyadh, Kingdom of Saudi Arabia.

National Center for Robotics Technology and Intelligent Systems, King Abdulaziz City for Science and Technology, Riyadh, Kingdom of Saudi Arabia.

出版信息

BMC Med Imaging. 2020 Dec 10;20(1):129. doi: 10.1186/s12880-020-00531-x.

DOI:10.1186/s12880-020-00531-x
PMID:33302887
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7731623/
Abstract

BACKGROUND

This study aimed to investigate the relationship between stiffness of the bicep brachii muscle (BBM) and distal bicep tendon (DBT) and effects of weight lifting (pre- to post-workout changes) among groups with different body mass indexes (BMI).

METHODS

Participants were divided into four groups according to BMI: A, underweight (< 18.5 kg/m); B, normal (18.5-24.9 kg/m); C, overweight (25.0-29.9 kg/m); and D, obese (> 30.0 kg/m). All participants were males who were untrained and had sedentary lifestyle without involvement in sports activities for the past 12 months. Ultrasonographic measurements to determine muscle and tendon stiffness was performed on the dominant side (i.e., right side) of the upper extremities in all participants.

RESULTS

Twenty-one healthy and untrained males volunteered to participate in this study; 14 were nonsmokers and 7 were smokers. The mean age and BMI were 22.5 ± 1.5 years and 23.8 ± 6.3 kg/m, respectively. Groups A, B, C, and D had four, ten, four, and three participants, respectively. The BBM thickness did not increase with increase in BMI and was not significantly different (P > .05) between groups. The BBM stiffness was significantly different (all P < .05) from pre- to post-workout values in all groups, whereas DBT stiffness did not follow the same trend.

CONCLUSIONS

Our study revealed that the BBM thickness is independent of BMI. After weight lifting, BBM stiffness in groups A and B increased for BBM compared to those in groups C and D. A similar trend was also recorded for DBT. Weight lifting in concentric and eccentric motions affects the stiffness of the BBM and DBT, thus weight lifting plays a role in adjusting the stiffness of the BBM and DBT. Trial registration The study was approved by ethics committee of the College of Applied Medical Sciences (CAMS 080-3839; March 14, 2018).

摘要

背景

本研究旨在探讨肱二头肌（BBM）硬度和远端肱二头肌肌腱（DBT）与不同体重指数（BMI）组举重前后（训练前后的变化）之间的关系。

方法

根据 BMI 将参与者分为四组：A、体重不足（<18.5kg/m）；B、正常（18.5-24.9kg/m）；C、超重（25.0-29.9kg/m）；D、肥胖（>30.0kg/m）。所有参与者均为男性，均未接受过训练，且过去 12 个月无运动活动。所有参与者的上肢优势侧（即右侧）均进行超声测量以确定肌肉和肌腱的硬度。

结果

21 名健康且未经训练的男性自愿参加了这项研究；14 名不吸烟，7 名吸烟。平均年龄和 BMI 分别为 22.5±1.5 岁和 23.8±6.3kg/m。A、B、C 和 D 组分别有 4、10、4 和 3 名参与者。BBM 厚度随 BMI 的增加而增加，但组间差异无统计学意义（P>.05）。BBM 硬度在所有组中均从训练前到训练后显著不同（所有 P<.05），而 DBT 硬度则没有遵循相同的趋势。

结论

我们的研究表明，BBM 厚度与 BMI 无关。举重后，A 组和 B 组的 BBM 硬度与 C 组和 D 组相比均增加。DBT 也记录到了类似的趋势。向心和离心运动的举重会影响 BBM 和 DBT 的硬度，因此举重在调节 BBM 和 DBT 的硬度方面发挥作用。

试验注册

该研究得到了应用医学科学学院伦理委员会的批准（CAMS 080-3839；2018 年 3 月 14 日）。

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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f02/7731623/ab18ec037bd1/12880_2020_531_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f02/7731623/bdfe6ed5ca2c/12880_2020_531_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f02/7731623/5f65833f3138/12880_2020_531_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f02/7731623/265172fd9741/12880_2020_531_Fig11_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f02/7731623/991486e45abc/12880_2020_531_Fig12_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f02/7731623/a87e01bb4334/12880_2020_531_Fig13_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f02/7731623/06b5d8f52f50/12880_2020_531_Fig14_HTML.jpg
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