Post-Graduate Program of Health Sciences, Faculdade Ciências Médicas de Minas Gerais, Alameda Ezequiel Dias, 275 - Centro, Belo Horizonte, MG, 30120-010, Brazil.
Discipline of Physiotherapy, The University of Sydney, Sydney, Australia.
Neurol Sci. 2022 Jul;43(7):4349-4354. doi: 10.1007/s10072-022-05939-7. Epub 2022 Feb 9.
To determine whether minute ventilation-to-carbon dioxide production (VE/VCO), oxygen pulse (VO/HR), and rate pressure product (RPP: VO * HR/1000) can explain energy expenditure during stair ascent/descent and whether energy expenditure during stair ascent/descent can discriminate between walking abilities in individuals with chronic stroke.
Regression analysis of cross-sectional data from 50 individuals between 1 and 4 years post-stroke was carried out to investigate the prediction of energy expenditure during stair ascent/descent. In addition, discriminant analysis was carried out to investigate the discrimination between walking abilities for energy expenditure: community (walking speed ≥ 0.8 m/s) and non-community (walking speed < 0.8 m/s) walkers.
Oxygen pulse and rate pressure product were retained in the model. Oxygen pulse alone explained 70% of the variance in energy expenditure during stair ascent/descent. By adding rate pressure product, 79% of the variance was explained. Energy expenditure was able to discriminate the community from the non-community walkers, with a cutoff value of 13.8 ml∙kg∙min and correctly classified 62% of the non-community and 78% of the community walkers.
Oxygen pulse and rate pressure product significantly predicted energy expenditure during stair ascent/descent in individuals with chronic stroke. Energy expenditure during stair ascent/descent discriminated community from non-community walkers.
确定分钟通气量与二氧化碳产量（VE/VCO）、氧脉冲（VO/HR）和心率压力乘积（RPP：VO*HR/1000）是否可以解释上下楼梯时的能量消耗，以及上下楼梯时的能量消耗是否可以区分慢性中风患者的行走能力。
对 50 名中风后 1 至 4 年的个体的横断面数据进行回归分析，以研究上下楼梯时能量消耗的预测。此外，还进行了判别分析，以研究能量消耗在行走能力方面的区分：社区（步行速度≥0.8m/s）和非社区（步行速度<0.8m/s）步行者。
氧脉冲和心率压力乘积保留在模型中。氧脉冲单独解释了上下楼梯时能量消耗的 70%。通过添加心率压力乘积，解释了 79%的方差。能量消耗能够区分社区和非社区步行者，截断值为 13.8ml·kg·min，正确分类了 62%的非社区和 78%的社区步行者。
氧脉冲和心率压力乘积显著预测了慢性中风患者上下楼梯时的能量消耗。上下楼梯时的能量消耗区分了社区和非社区步行者。
