| （浙江越秀外国语学院 体育部，浙江 绍兴 312000） 摘 要：为了解能力主导型高原训练对国家皮划艇队女子皮划艇运动员心脏功能的影响。以国家皮划艇队女子皮划艇运动员10人为研究对象，监测高原训练前、高原训练第1、2、3、4周的周一清晨心电图(electrocardiogram，ECG)变化，求取心电图ΣT/R值；同时取清晨空腹静脉血测定肌钙蛋白T(Cardiac troponin T，cTnT)。结果显示：(1)与高原训练前相比，安静心率(Heart Rate，HR)在高原训练第1周显著升高(P<0.01)，之后几周无明显差异。(2)血清cTnT先上升后下降，高原训练第1周显著升高((0.13±0.02)ng/mL)，P<0.01)。(3)高原训练第3周后心电图ΣT/R显著下降(0.91±0.44，P<0.01)。结果说明：(1)高原训练初期安静心率升高，随机体适应后，心率下降。(2)高原训练中低氧环境能促使血清cTnT升高。(3)高原训练过程中低氧和训练双重刺激会使心电图ΣT/R值明显下降，要密切关注心电图ΣT/R值在高原训练中的变化，并采取及时有效的措施。 |
LI De-qi
| （Department of Physical Education，Zhejiang Yuexiu Foreign Language College，Shaoxing 312000，China） Abstract: In order to understand the effects of capacity orientated altiplano training on the cardiac functions of fe-male kayakers in the national kayak team, the author, by basing his study subject on 10 female kayakers in the na-tional kayak team, monitored the changes of electrocardiogram (ECG) in the mornings of Mondays in weeks 1, 2, 3 and 4, calculated the ECG ΣT/R value, and at the same time, drew venous blood in the mornings in an empty stomach condition to measure cardiac troponin T (cTnT), and revealed the following findings: 1) as compared that before altiplano training, the calm heart rate increased significantly in the first week of altiplano training (P<0.01), having no significant difference in the next few weeks; 2) blood serum cTnT increased first and then decreased, in-creased significantly in the first week of altiplano training (0.13±0.02, P<0.01); 3) after the third week of altiplano training, ECG ΣT/R decreased significantly (0.91±0.44, P<0.01). The findings indicated the followings: 1) the calm heart rate increased in the early period of altiplano training, and then decreased as the body had adapted; 2) in alti-plano training, the hypoxia environment could boost the increase of blood serum cTnT; 3) in altiplano training, the double stimulation of hypoxia and training could cause the significant decrease of ECG ΣT/R, therefore, the change of the ECG ΣT/R value in altiplano training should be watched closely, and timely and effectively measures should be taken. |
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