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11.
袁世万 《湖南科技学院学报》2005,26(4):238-240
呼吸是生活中人的生命运动本能，而歌唱的呼吸虽然来自于生活而又高于生活。因此，研究人类的本能呼吸是我们寻求理想的歌唱呼吸的最佳途经之一。 相似文献
12.
长期游泳运动后大鼠主动脉内皮细胞的改变 总被引：2，自引：0，他引：2
对9只大鼠进行了6个月的游泳训练后，结果发现：内皮细胞胞核增大，染色体增多，细胞质中线粒体增加，有大量微饮小泡存在。运动训练可以引起主动脉形态结构的改变。 相似文献
13.
为探讨运动训练对大血管的影响，对长期游泳训练的大鼠主动脉中膜作了透射电镜及光镜的配合观察。结果发现：游泳训练后的大鼠主动脉中膜平滑肌细胞线粒体、粗面内质网、微饮小泡等超微结构产生了形态学上的变化。中膜弹力纤维增多有利于大动脉的弹性贮器功能。为进一步研究运动训练对大血管的影响提供了形态学上的依据。 相似文献
14.
《European Journal of Sport Science》2013,13(6):469-474
Abstract Objective: To evaluate the influence of hamstring extensibility on spinal and pelvic postures adopted by young paddlers in their kayaks. Methods: Sixty-eight young elite kayakers were recruited for the study (mean value 15.23, s=0.68 years). Thoracic and lumbar curvatures and pelvic position were evaluated with a Spinal Mouse system in standing position and in the boat (seated in the kayak with the paddle resting on their thighs, right entry position and left entry position). Hamstring muscle extensibility was determined in both legs by passive straight leg raise test (PSLR). The sample was divided into two groups with regard to straight leg raise angle (Group A, PSLR < 80°, n=32, and group B, PSLR ≥ 80°, n=32). Results: Paddlers with lower extensibility presented higher thoracic and lumbar flexion and a more posterior pelvic tilt in the kayak in all three positions. However, no significant differences were found between the groups when standing. Conclusion: The results suggest that lower hamstring extensibility is related to increased spinal flexion and posterior pelvic tilt, which can overload the spine during paddling training. A systematic and intensive stretching programme to improve hamstring muscle extensibility should be incorporated into the training activities of paddlers. 相似文献
15.
Video-assisted thoracic surgery——the past, present status and the future 总被引：10，自引：3，他引：10
Video-assisted thoracic surgery （VATS） has developed very rapidly in these two decades, and has replaced conventional open thoracotomy as a standard procedure for some simple thoracic operations as well as an option or a complementary procedure for some other more complex operations. In this paper we will review its development history, the present status and the future perspectives. 相似文献
16.
为探讨有氧运动在预防和改善动脉粥样硬化发生发展过程中对主动脉一氧化碳(CO)的影响,子高脂膳食建立大鼠动脉粥样硬化模型过程中,施以不同强度的有氧运动,8周后检测主动脉CO含量。结果显示,在动脉粥样硬化发生发展中,每天60分钟和120分钟的游泳训练,大鼠主动脉CO含量显著升高,分别增加了37 37%和51 60%(P<0 01)。提示有氧运动刺激主动脉产生CO增加,可能是其预防和改善动脉粥样硬化发生发展的机制之一。 相似文献
17.
LIN Ming-shian LIN Wea-lung LUH Shi-ping TSAO Thomas Chang-yao WU Tzu-ching 《Journal of Zhejiang University. Science. B》2007,(10)
Actinomycosis is an uncommon disease, which is usually manifested as cervicofacial infection and related to poor oral hygiene or compromised immune function. Pulmonary actinomycosis is rare, but its diagnosis is changing due to its variable presentation and the similarity in appearance to other intrapulmonary diseases. Here we report an 80-year-old man with a solitary pulmonary nodule over the left upper lobe. Pulmonary neoplasm was highly suspected in this patient and thus resection of the mass was undertaken through video-assisted thoracic surgery (VATS). Histopathological examination demonstrated this patient had an Actinomyeces infection. While the application of VATS in patients with pulmonary actinomycosis has rarely been reported in literature, we conclude that VATS is valuable for the diagnosis and treatment of patients with undetermined pulmonary nodule(s). 相似文献
18.
Graeme G. Sorbie Fergal M. Grace Yaodong Gu Julien S. Baker 《Journal of sports sciences》2018,36(7):717-723
The purpose of this study was to compare the electromyography (EMG) patterns of the thoracic and lumbar regions of the erector spinae (ES) muscle during the golf swing whilst using four different golf clubs. Fifteen right-handed male golfers performed a total of twenty swings in random order using the driver, 4-iron, 7-iron and pitching-wedge. Surface EMG was recorded from the lead and trail sides of the thoracic and lumbar regions of the ES muscle (T8, L1 and L5 lateral to the spinous-process). Three-dimensional high-speed video analysis was used to identify the backswing, forward swing, acceleration, early and late follow-through phases of the golf swing. No significant differences in muscle-activation levels from the lead and trail sides of the thoracic and lumbar regions of the ES muscle were displayed between the driver, 4-iron, 7-iron and pitching-wedge (P > 0.05). The highest mean thoracic and lumbar ES muscle-activation levels were displayed in the forward swing (67–99% MVC) and acceleration (83–106% MVC) phases of the swing for all clubs tested. The findings from this study show that there were no significant statistical differences between the driver, 4-iron, 7-iron and pitching-wedge when examining muscle activity from the thoracic and lumbar regions of the ES muscle. 相似文献
19.
胸主动脉夹层是一种严重危及人类健康的心血管疾病，临床上的主要治疗方式为胸腔内修复术（TEVAR）。结合开窗技术的TEVAR（ISF-TEVAR）可用于治疗累及主动脉弓及其弓上分支血管的复杂病例。对一例主动脉夹层建立ISF-TEVAR术后的主动脉模型，开展血液两相流动数值模拟。通过考察血流动力学参数，定量探究ISF-TEVAR手术疗效；同时通过虚拟手术，缩短开窗支架在主动脉弓部的伸出长度，分别构建"半伸出"和"无伸出"两例术后模型，对比探究开窗支架的伸出长度对术后血液流动的影响。结果表明，开窗支架伸出段对血液动力学参数有显著影响，适当缩短伸出段长度有助于提升手术疗效。 相似文献
20.
Dongxu He Aiqin Mao Chang-Bo Zheng Hao Kan Ka Zhang Zhiming Zhang Lei Feng Xin Ma 《国家科学评论(英文版)》2020,7(5):881
The aorta, with ascending, arch, thoracic and abdominal segments, responds to the heartbeat, senses metabolites and distributes blood to all parts of the body. However, the heterogeneity across aortic segments and how metabolic pathologies change it are not known. Here, a total of 216 612 individual cells from the ascending aorta, aortic arch, and thoracic and abdominal segments of mouse aortas under normal conditions or with high blood glucose levels, high dietary salt, or high fat intake were profiled using single-cell RNA sequencing. We generated a compendium of 10 distinct cell types, mainly endothelial (EC), smooth muscle (SMC), stromal and immune cells. The distributions of the different cells and their intercommunication were influenced by the hemodynamic microenvironment across anatomical segments, and the spatial heterogeneity of ECs and SMCs may contribute to differential vascular dilation and constriction that were measured by wire myography. Importantly, the composition of aortic cells, their gene expression profiles and their regulatory intercellular networks broadly changed in response to high fat/salt/glucose conditions. Notably, the abdominal aorta showed the most dramatic changes in cellular composition, particularly involving ECs, fibroblasts and myeloid cells with cardiovascular risk factor-related regulons and gene expression networks. Our study elucidates the nature and range of aortic cell diversity, with implications for the treatment of metabolic pathologies. 相似文献