Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy.
Department for Life Quality Studies, University of Bologna, Bologna, Italy.
J Strength Cond Res. 2019 May;33(5):1408-1415. doi: 10.1519/JSC.0000000000002066.
Piras, A, Cortesi, M, Campa, F, Perazzolo, M, and Gatta, G. Recovery time profiling after short-, middle- and long-distance swimming performance. J Strength Cond Res 33(5): 1408-1415, 2019-We investigated cardiac autonomic responses and hemodynamic parameters on recovery time after short-, middle- and long-swimming performance. Ten male regional-level swimmers were tested to estimate time and frequency domains of arterial baroreflex sensitivity (BRS) and heart rate variability after 100, 200, and 400 m of front crawl. We found a BRS reduction for 90 minutes after a maximal 100- and 200-m front crawl event, meanwhile the reflex was restored back to the baseline value approximately 70 minutes after 400 m. The vagally mediated high-frequency power of R-R intervals was significantly reduced for 30 minutes after 400 m, and more than 90 minutes after 100 and 200 m, with a concomitant increase of sympathetic modulation. After 400 m, athletes have reduced their stroke volume for 50 minutes, which remained at the baseline level after 100 and 200 m. Heart rate was restored back after 90 minutes in all conditions, whereas total peripheral vascular resistance was significantly reduced for 50 minutes after 200 and 400 m, with a persistent reduction after 100 m. Time course of autonomic recovery after 3 different swimming performances is influenced by exercise intensity and duration, showing a rapid recovery after 400 m, an intermediate recovery after 200 m, and a significantly delayed recovery after a more strictly anaerobic performance like 100 m of front crawl. These results could encourage coaches to consider that athlete might be affected by the specific recovery time of the previous exercise performed, suggesting that the management of the exercise intensity, and appropriate monitoring of cardiac autonomic parameters might be helpful to know the physical condition of each athlete.
皮拉斯、A、科尔泰西、M、坎帕、F、佩拉佐洛、M 和加塔、G. 短、中、长距离游泳表现后恢复时间分析。J 力量与调节研究 33(5):1408-1415,2019-我们研究了心脏自主神经反应和血流动力学参数在短、中、长距离游泳表现后的恢复时间。10 名男性地区级游泳运动员接受测试，以估计 100、200 和 400 米自由泳后的动脉压力反射敏感性 (BRS) 和心率变异性的时间和频率域。我们发现，最大 100 和 200 米自由泳事件后 90 分钟内 BRS 降低，而反射大约在 400 米后恢复到基线值。400 米后，R-R 间期的迷走介导高频功率显著降低 30 分钟，100 和 200 米后超过 90 分钟，同时交感神经调节增加。400 米后，运动员的每搏输出量减少 50 分钟，100 和 200 米后保持在基线水平。所有条件下，心率在 90 分钟后恢复，而总外周血管阻力在 200 和 400 米后显著降低 50 分钟，100 米后持续降低。3 种不同游泳表现后自主神经恢复的时间过程受运动强度和持续时间的影响，400 米后恢复较快，200 米后恢复较快，100 米后恢复较慢。这些结果可能鼓励教练考虑到运动员可能会受到之前运动的特定恢复时间的影响，这表明运动强度的管理和适当监测心脏自主神经参数可能有助于了解每个运动员的身体状况。
