Functional walk tests in individuals with stroke - Relation to perceived exertion and myocardial exertion
Functional walk tests in individuals with stroke - Relation to perceived exertion and myocardial exertion
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DOI：
10.1161/hs0302.104195
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发表时间：
2002-03-01
期刊：
影响因子：
8.3
通讯作者：
Hepburn, KE
中科院分区：
文献类型：
--
作者：
Eng, JJ;Chu, KS;Hepburn, KE
背景和目的-功能性步行试验，如6分钟和12分钟步行试验（即，分别为6 MWT和12 MWT）是用于确定能力受损个体的功能能力的次最大测量。本研究的目的是确定这些步行试验和劳累（感知和心肌）的措施之间的关系，除了在个人中风的损害。6 MWT、12 MWT和更传统的自行起搏步态速度评估指标之间的关系（通常在短距离内评估，例如，10米）也evaluated.Methods -25个社区居住的个人与中风进行了评估，为以下：12 MWT距离、6 MWT距离、8 m以上自行步速、跖屈强度、贝格平衡量表、Ashworth痉挛量表和Chedoke-McMaster卒中评估。在功能性步行试验中评估心率（HR）、心率-血压乘积（RPP）和自感劳累。相关性分析量化了步态、损伤测量和功能性步行测试期间的生理反应之间的关系。结果- HR在6分钟后达到稳定状态，并反映了年龄预测最大HR的63%的中等运动强度。6 MWT，12 MWT，与自主步速之间均高度相关（r > 0.90），且均与损伤程度有关。功能性步行距离与感知的劳累或实际的劳累（通过RPP测量的心肌需氧量增加）无关。结论-卒中特异性损伤是卒中患者步行距离的主要限制。如果功能性步行试验用于评估个体随时间推移的表现（例如，对干预的反应），我们建议同时测量运动（例如，RPP或HR的增加）和距离。
Background and Purpose - Functional walk tests such as the 6- and 12-Minute Walk Test (i.e, 6MWT and 12MWT, respectively) are submaximal measures used to determine functional capacity in individuals with compromised ability. The purpose of this study was to determine the relationship between these walk tests and measures of exertion (perceived and myocardial), in addition to impairment in individuals with stroke. The relationship among the 6MWT, 12MWT, and the more traditionally assessed measure of self-paced gait speed (generally assessed over a short distance, eg, 10 m) was also evaluated.Methods - Twenty-five community-dwelling individuals with stroke were evaluated for the following: 12MWT distance, 6MWT distance, self-paced gait speed over 8 m, plantarflexion strength, Berg Balance Scale, Ashworth Scale of Spasticity, and Chedoke-McMaster Stroke Assessment. Heart rate (HR), rate-pressure product (RPP), and perceived exertion were assessed during the functional walk tests. Correlational analysis quantified the relationship between gait, impairment measures, and physiological responses during the functional walk tests.Results - HR reached a steady state after 6 minutes and reflected a moderate exercise intensity of 63% of age-predicted maximum HR. The 6MWT, 12MWT, and self-paced gait speed were all highly correlated with one another (r > 0.90) and were all also related to the severity of impairments. The functional walk distances did not relate either to perceived exertion or actual exertion (increase in the myocardial oxygen demand as measured by RPP).Conclusions - Stroke- specific impairments are the major limitations to the distance walked in individuals with stroke. If the functional walk test is used to assess performance of an individual over time (eg, in response to an intervention), we recommend that both exertion (eg, increase in RPP or HR) and distance be measured.