Effects of Walking Endurance Reduction on Gait Stability in Patients with Stroke

Abstract

Control of gait is usually altered following stroke, and it may be further compromised by overexertion and fatigue. This study aims to quantitatively assess patients' gait stability during six-minute walking, measuring upper body accelerations of twenty patients with stroke (64±13 years old) and ten age-matched healthy subjects (63±10 years old). Healthy subjects showed a steady gait in terms of speed and accelerations over the six minutes. Conversely, the patients unable to complete the test (𝑛=8) progressively reduced their walking speed (22±11%, confidence interval CI95%: 13, 29%, 𝑃=0.046). Patients able to complete the test (𝑛=12) did not vary their walking speed over time (𝑃=0.493). However, this ability was not supported by an adequate capacity to maintain their gait stability, as shown by a progressive increase of their upper body accelerations (