Physiological responses and perceived exertion during robot-assisted treadmill walking in non-ambulatory stroke survivors.

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ID: 58190
2019
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Abstract
: To examine physiological responses and perceived exertion during robot-assisted treadmill walking in non-ambulatory stroke survivors; compare these outcomes with aerobic exercise recommendations; and investigate the effect of robotic assistance. : Twelve non-ambulatory stroke survivors (67 ± 11 years-old, 84 ± 38 d post-stroke) participated. Subjects walked three times 20 min (1 session/day) in the Lokomat: once with conventional exercise parameters, once with 60% robotic assistance and once with 100% robotic assistance. Gas exchange and heart rate were monitored continuously. Perceived exertion was assessed every 3 min during walking. : During conventional robot-assisted treadmill walking, net perceived exertion (0-14 scale) significantly increased between minute 6 (median = 2, interquartile range = 4) and 18 (median = 5, interquartile range = 4). Net physiological responses did not significantly change over time. Throughout exercise, percentage of predicted heart rate reserve was significantly below the 40% threshold (medians: 11-14%) and percentage of predicted maximum heart rate reached the 55% threshold (medians: 59-60%). Perceived exertion reached the 11-point threshold halfway. Net physiological responses and perceived exertion did not significantly differ between 60% and 100% robotic assistance. : The assistance level that non-ambulatory stroke survivors require at their highest tolerable walking speed seems too high to sufficiently stress the cardiorespiratory system during robot-assisted treadmill walking. Implications for rehabilitation The exercise intensity of 20-minute conventional robot-assisted treadmill walking can be low, and might be too low to challenge the cardiorespiratory system of non-ambulatory stroke survivors. Lowering the level of robotic assistance from 100% to 60% does not seem to increase the exercise intensity of 20-minute robot-assisted treadmill walking.
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lefeber2019physiologicaldisability Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Nina Lefeber, Emma De Keersmaecker, Stieven Henderix, Marc Michielsen, Federica Tamburella, Nevio Luigi Tagliamonte, Marco Molinari, Bas de Geus, Eric Kerckhofs, Eva Swinnen
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Journal Disability and rehabilitation
Year 2019
DOI
10.1080/09638288.2019.1671502
URL
Keywords
stroke walking energy metabolism aerobic exercise exoskeleton devices

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