• Kim Jiae, Min Ho Chun, Junekyung Lee, Jun Won Kim, and Ji Yeon Lee.
• Department of Rehabilitation Medicine, Asan Medical Center, University of Ulsan College of Medicine, Republic of Korea.
• Medicine (Baltimore). 2022 Sep 23; 101 (38): e30818.

ObjectiveThis study is aimed to compare the effect of robot-assisted gait training when the intensity is controlled using patients' biometric data to when controlled by therapist's subjective judgment.DesignThis is non-blinded, prospective, randomized controlled study. Patients were randomly assigned to one of two groups. In biometric data control group, exercise intensity was controlled through the patient's heart rate or rating of perceived exertion (RPE). The intensity was raised to the next level when the patient's heart rate reserve was less than 40 percent or the RPE was less than 12 points. The exercise intensity of the therapist control group was adjusted according to the judgement of a therapist. All patients were instructed to perform robot (Morning Walk®)-assisted 20-minute gait training session five times a week during 3 weeks. The primary outcome was functional ambulation category (FAC). The secondary outcomes were modified Barthel index (MBI), Berg balance scale (BBS), timed up and go test (TUG) and 10-meter walk test (10MWT) The outcomes were evaluated at baseline and after 3-week gait training.ResultsA total of 55 patients with stroke were enrolled. After robotic rehabilitation, the primary outcome, FAC improved significantly (P < .05) in both groups. Also, secondary outcomes, including MBI, BBS, TUG, 10MWT, showed significant improvement (P < .05) in all groups. In addition, when comparing the functional change from baseline to week 3 between the two groups, there was no statistically significant difference in FAC (P > .05). The difference of baseline and week 3 of secondary outcome measure, MBI, BBS, TUG, 10MWT, showed no significant difference (P > .05).ConclusionIn conclusion, when the robot intensity was adjusted using the patient's heart rate or RPE, the treatment effect has no significant difference to when adjusting the intensity according to the know-how of the therapist.Copyright © 2022 the Author(s). Published by Wolters Kluwer Health, Inc.

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