HAVAE EA6310 (Handicap, Aging, Autonomy, Environment), FIRAH, University of Limoges, 87042 Limoges, France; Department of Physical Medicine and Rehabilitation in the University Hospital Center, 87042 Limoges, France.
HAVAE EA6310 (Handicap, Aging, Autonomy, Environment), FIRAH, University of Limoges, 87042 Limoges, France.
Gait Posture. 2021 Sep;89:217-219. doi: 10.1016/j.gaitpost.2021.07.017. Epub 2021 Jul 29.
The oxygen cost of walking (Cw) represents the energy expenditure involved in walking, which is a major concern when quantifying physical activity in stroke. Recent studies have reported that Cw may be estimated accurately with a prediction equation using the self-self-selected walking speed (S).
To evaluate the validity of Cw estimates according to different modalities of S measurements (10-m walking test, 6-minute walking test, GaitRite system).
Twenty-one stroke individuals in subacute phase who were able to walk without human aid were included. Cw was estimated from the walking speed measured during a 10-m walking test, a 6-minute walking test and a recording on a GaitRite system. The values of the Cw estimates were compared to those measured by a respiratory gas exchange analyzer (Metamax3b).
The findings showed that there is no significant difference between the Cw measured by Metamax3b and the Cw estimates regardless of the modalities used to measure S (Fvalue = 0.02; pvalue = 0.99). The mean bias between Cw measured by the Metamax3b and those estimated using the different S measurement modalities was less than 2.5 % of the mean Cw value. Test retest reliability was excellent with an intraclass correlation coefficient higher than 0.95.
in stroke survivors who are able to walk independently without human aid, the use of a 10-m walking test, a 6-minute walking test or a GaitRite recording can be considered validated for estimating Cw.
步行耗氧量（Cw）代表步行所涉及的能量消耗，这是量化中风患者身体活动时的主要关注点。最近的研究报告称，使用自我选择的步行速度（S）的预测方程可以准确估计 Cw。
评估根据 S 测量的不同方式（10 米步行测试、6 分钟步行测试、GaitRite 系统）估计 Cw 的有效性。
纳入 21 名处于亚急性期且能够独立行走无需他人帮助的中风患者。通过 10 米步行测试、6 分钟步行测试和 GaitRite 系统上的记录来测量步行速度，从而估算 Cw。将 Cw 估计值与呼吸气体交换分析仪（Metamax3b）测量的值进行比较。
研究结果表明，无论使用哪种方式测量 S，Metamax3b 测量的 Cw 与使用不同 S 测量方式估算的 Cw 之间没有显著差异（F 值=0.02；p 值=0.99）。Metamax3b 测量的 Cw 值与使用不同 S 测量方式估算的 Cw 值之间的平均偏差小于平均 Cw 值的 2.5%。测试-再测试可靠性非常好，组内相关系数高于 0.95。
在能够独立行走且无需他人帮助的中风幸存者中，使用 10 米步行测试、6 分钟步行测试或 GaitRite 记录可以被认为是估算 Cw 的有效方法。
