心肺动力学:过渡到耐力训练状态的敏感性。

N A Taylor, M A Osborne, T L Bube, J M Stocks
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引用次数: 3

摘要

本项目研究了在广泛的耐力训练历史中,氧摄取(VO(2))动态对训练引起的生理变化的敏感性。40名受试者参与:久坐(n = 10)、积极健康(n = 10)、经常跑步(n = 10)和竞技长跑(n = 10)。受试者完成一个循环阶跃函数方案,以达到60%最大工作速率的稳定状态。收集VO(2)和心脏频率(f(c))的逐次呼吸数据,并进行数学建模,并用于确定达到各自稳定状态的20%,40%,60%,80%和100%的平均响应时间。VO(2)和f(c)的组间比较显示,训练较好的被试对诱导反应的40%、60%、80%和100%的反应时间明显较快(P < 0.05)。一般来说,这种技术允许区分非精英受试者的VO(2)和f(c)反应动态,这些受试者来自广泛的耐力训练历史,当受试者接近稳定状态时,差异变得更加明显。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Cardiorespiratory dynamics: sensitivity of the on-transition to endurance-training status.

This project investigated the sensitivity of oxygen uptake (VO(2)) dynamics to training-induced physiological changes, across a broad spectrum of endurance-training histories. Forty subjects participated: sedentary (n = 10), active healthy (n = 10), regular runners (n = 10), and competitive distance runners (n = 10). Subjects completed a cycle step-function protocol, to elicit a steady state at 60% maximal work rate. Breath-by-breath data were collected for VO(2) and cardiac frequency (f(c)), and modelled mathematically, and used to determine the average response times to attain 20%, 40%, 60%, 80% and 100% of the respective steady states. The between-group comparisons for both VO(2) and f(c) revealed significantly faster response times to 40%, 60%, 80% and 100% of the induced response, for the better trained subjects (P < 0.05). In general, this technique permitted differentiation between the VO(2) and f(c) response dynamics of non-elite subjects from a broad range of endurance-training histories, with differences becoming more pronounced as subjects approached the steady state.

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