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心脏尺寸与峰值摄氧量的关系。

Relation between cardiac dimensions and peak oxygen uptake.

机构信息

Department of Clinical Physiology, Lund University Hospital, Lund University, Lund, Sweden.

出版信息

J Cardiovasc Magn Reson. 2010 Feb 1;12(1):8. doi: 10.1186/1532-429X-12-8.

DOI:10.1186/1532-429X-12-8
PMID:20122149
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC2825210/
Abstract

BACKGROUND

Long term endurance training is known to increase peak oxygen uptake (VO2peak) and induce morphological changes of the heart such as increased left ventricular mass (LVM). However, the relationship between and the total heart volume (THV), considering both the left and right ventricular dimensions in both males and females, is not completely described. Therefore, the aim of this study was to test the hypothesis that THV is an independent predictor of VO2peak and to determine if the left and right ventricles enlarge in the same order of magnitude in males and females with a presumed wide range of THV.

METHODS AND RESULTS

The study population consisted of 131 subjects of whom 71 were athletes (30 female) and 60 healthy controls (20 female). All subjects underwent cardiovascular MR and maximal incremental exercise test. Total heart volume, LVM and left- and right ventricular end-diastolic volumes (LVEDV, RVEDV) were calculated from short-axis images. was significantly correlated to THV, LVM, LVEDV and RVEDV in both males and females. Multivariable analysis showed that THV was a strong, independent predictor of (R2 = 0.74, p < 0.001). As LVEDV increased, RVEDV increased in the same order of magnitude in both males and females (R2 = 0.87, p < 0.001).

CONCLUSION

Total heart volume is a strong, independent predictor of maximal work capacity for both males and females. Long term endurance training is associated with a physiologically enlarged heart with a balance between the left and right ventricular dimensions in both genders.

摘要

背景

长期耐力训练可增加峰值摄氧量(VO2peak),并引起心脏形态变化,如左心室质量(LVM)增加。然而,男性和女性的总心脏体积(THV)与 VO2peak 之间的关系尚未完全描述,同时也考虑到左右心室的维度。因此,本研究旨在检验 THV 是 VO2peak 的独立预测因子的假设,并确定在假定的 THV 范围较宽的情况下,左右心室是否按相同的幅度增大。

方法和结果

研究人群包括 131 名受试者,其中 71 名是运动员(30 名女性),60 名是健康对照者(20 名女性)。所有受试者均接受心血管磁共振和最大递增运动试验。从短轴图像计算总心脏体积、LVM 和左、右心室舒张末期容积(LVEDV、RVEDV)。在男性和女性中,均与 THV、LVM、LVEDV 和 RVEDV 显著相关。多变量分析显示,THV 是 VO2peak 的一个强大的独立预测因子(R2 = 0.74,p < 0.001)。随着 LVEDV 的增加,男性和女性的 RVEDV 按相同的幅度增加(R2 = 0.87,p < 0.001)。

结论

THV 是男性和女性最大工作能力的一个强大的、独立的预测因子。长期耐力训练与生理性增大的心脏相关,左右心室的维度在两性中保持平衡。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04a5/2825210/1125e7b34d88/1532-429X-12-8-5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04a5/2825210/e05bbe096028/1532-429X-12-8-1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04a5/2825210/dbc39cd06704/1532-429X-12-8-2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04a5/2825210/1f515743b0e3/1532-429X-12-8-3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04a5/2825210/03dbfc3e5c77/1532-429X-12-8-4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04a5/2825210/1125e7b34d88/1532-429X-12-8-5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04a5/2825210/e05bbe096028/1532-429X-12-8-1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04a5/2825210/dbc39cd06704/1532-429X-12-8-2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04a5/2825210/1f515743b0e3/1532-429X-12-8-3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04a5/2825210/03dbfc3e5c77/1532-429X-12-8-4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04a5/2825210/1125e7b34d88/1532-429X-12-8-5.jpg

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