Laboratory of Sciences of Physical Activity, Sport and Health, Faculty of Medical Sciences, Universidad de Santiago de Chile, Santiago 9170022, Chile.
Human Performance Lab, Education, Physical Activity and Health Research Unit (GEEAFyS), Universidad Católica del Maule, Talca 3460000, Chile.
Medicina (Kaunas). 2022 Mar 3;58(3):378. doi: 10.3390/medicina58030378.
: The prevalence of chronic diseases increases with age, and in octogenarian elderly, a cardiorespiratory test with gas analysis is more effective in determining the risk of mortality than applying the conventional risk factors. : 25 untrained non-frail octogenarian subjects (four men) performed a submaximal test with gas analysis, which was stopped after the second ventilatory threshold (VT2) was reached. The variables analyzed were oxygen consumption at the first threshold (VO VT1); ventilatory class (VE/VCO); oxygen uptake efficiency slope (OUES); cardiorespiratory optimal point (COP); oxygen pulse difference between VT2 and VT1 (diff. VO/HR VT2-VT1). : the variables were classified categorically based on cut-off points present in the literature, where the variable with the highest percentage of altered cases was dif. VO2/HR VT2-VT1 at 48%; followed by VO VT1 at 40%, OUES at 36%, COP at 32%, and VE/VCO at 24%. Chi-square analysis between the measured parameters defined that normal and altered variables were related to each other, except for the variable VE/VCO and OUES. : it was found that the main altered variable was the oxygen pulse and the least altered variable was VCO/VCO; there was only a statistically significant difference in a pair of OUES vs. VE/VCO variables.
随着年龄的增长，慢性病的患病率增加，在 80 岁以上的老年人中，与应用传统危险因素相比，进行带气体分析的心肺测试更能有效确定死亡风险。 25 名未经训练的非虚弱 80 岁以上老年人（4 名男性）进行了带气体分析的亚最大强度测试，当达到第二个通气阈值 (VT2) 后停止测试。分析的变量包括第一阈值时的耗氧量 (VO VT1)；通气分级 (VE/VCO)；摄氧量效率斜率 (OUES)；心肺最佳点 (COP)；VT2 与 VT1 之间的氧脉冲差 (diff. VO/HR VT2-VT1)。 根据文献中存在的截止点对变量进行分类，其中改变病例百分比最高的变量是 diff. VO2/HR VT2-VT1 为 48%；其次是 VO VT1 为 40%，OUES 为 36%，COP 为 32%，VE/VCO 为 24%。测量参数之间的卡方分析表明，正常和改变的变量相互关联，除了 VE/VCO 和 OUES 变量。 结果发现，主要改变的变量是氧脉冲，改变最小的变量是 VCO/VCO；仅在 OUES 与 VE/VCO 变量对之间存在统计学差异。
