在基线条件下和响应急性最大运动时,对照组和三项运动员之间的大动脉脉冲波比较
Camila Ianê-Siva1, Reginaldo Gonçalves2, Claudinéia de Oliveira Otoni1
1Post-Graduate Program in Health Sciences-MG, Faculdade Ciências Médicas de Minas Gerais (FCM-MG), Belo Horizonte, MG, Brazil.
三项运动员的强度训练在最大运动测试期间改善了血液动力学反应. 三项运动员表现出较低的增强指数 (AIx@75) 和心率,与久坐的人相比,中风体积更高,表明心血管效率提高.
科学领域:
- 心血管生理学心血管生理学
- 运动生理学 运动生理学
- 运动科学 运动科学 运动科学
背景情况:
- 耐力运动员表现出明显的心血管适应.
- 了解对运动的血液动力学反应对于评估心血管健康至关重要.
- 最大运动测试 (MaxET) 提供了对生理限制和适应性的洞察.
研究的目的:
- 为了比较三项运动员和久坐不动的人之间的大动脉脉冲波变量和血液动力学参数.
- 为了评估强度训练在最大运动测试之前和之后对心血管反应的影响.
- 为了研究运动强度,动脉硬和心脏后负荷之间的关系.
主要方法:
- 前性,实验性研究设计.
- 招募了21名三项运动员和21名久坐式对照.
- 在MaxET之前和之后使用Mobil-O-Graph®评估血液动力学参数.
主要成果:
- 三项运动员在MaxET后的增强指数 (AIx@75) 与对照人群相比显著较低 (16.34 ± 5.95%与23.5 ± 8.53%,p=0.001).
- 三项运动员的心率在休息和MaxET后都较低.
- 与对照人群相比,三项运动员在休息和MaxET后的中风量显著更高.
结论:
- 强烈的有氧训练,如在三项运动员中看到的,导致有利的血液动力学适应.
- 三项运动员的较低AIx@75表明动脉硬性降低和左心室后负载.
- 这些发现强调了持续有氧体育训练对心血管的益处.
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