Controller synthesis and clinical exploration of wearable gyroscopic actuators to support human balance

 So success. How many fucking decades before this gets to your hospital? Probably after your children and grandchildren are dead. THAT is how fossilized I know stroke leadership is.

 Controller synthesis and clinical exploration of wearable gyroscopic actuators to support human balance

Scientific Reports , Volume 10(1) , Pgs. 10412.

NARIC Accession Number: J84055.  What's this?
ISSN: 2045-2322.
Author(s): Lemus, Daniel ; Berry, Andrew ; Jabeen, Saher Jayaraman, Chandrasekaran ; Hohl, Kristen ; van der Helm, Frans C. T. ; Jayaraman, Arun ; Vallery, Heike.
Project Number: 90RE5010 (formerly H133E120010).
Publication Year: 2020.
Number of Pages: 15.

Abstract: 

Study used the GyBAR, a backpack-like prototype portable robot, to investigate the hypothesis that the balance of both healthy and chronic stroke subjects can be augmented through moments applied to the upper body. Gyroscopic actuators are appealing for wearable applications due to their ability to provide overground balance support without obstructing the legs. Two experiments involving a different set of balancing tasks were performed. Experiment 1 compared different candidate balance-assisting controllers with 10 healthy subjects in a walking task, and Experiment 2 explored both walking and standing balance in 5 healthy subjects and 5 individuals with chronic stroke. Balance performance was measured in terms of each participant's ability to walk or remain standing on a narrow support surface oriented to challenge stability in either the frontal or the sagittal plane. By comparing candidate balance controllers, it was found that effective assistance did not require regulation to a reference posture. A rotational viscous field increased the distance healthy participants could walk along a 30-millimeter-wide beam by a factor of 2.0, compared to when the GyBAR was worn but inactive. The same controller enabled individuals with chronic stroke to remain standing for a factor of 2.5 longer on a narrow block. Due to its wearability and versatility of control, the GyBAR could enable new therapy interventions for training and rehabilitation.
Descriptor Terms: AMBULATION, ASSISTIVE TECHNOLOGY, BODY MOVEMENT, EQUILIBRIUM, MOBILITY AIDS, MOBILITY IMPAIRMENTS, POSTURE, REHABILITATION TECHNOLOGY, ROBOTICS, STROKE, TASK ANALYSIS.


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Get this Document: https://www.nature.com/articles/s41598-020-66760-w.

Citation: Lemus, Daniel , Berry, Andrew , Jabeen, Saher Jayaraman, Chandrasekaran , Hohl, Kristen , van der Helm, Frans C. T. , Jayaraman, Arun , Vallery, Heike. (2020). Controller synthesis and clinical exploration of wearable gyroscopic actuators to support human balance.  Scientific Reports , 10(1), Pgs. 10412. Retrieved 8/18/2020, from REHABDATA database.

Treadmill walking with partial body weight support versus floor walking in hemiparetic subjects

It has only been 21 years, how fucking long will you allow your stroke doctors and hospital to stay incompetent by not having protocols on this? Is another 50 years good? So your grandchildren have the same incompetent and ineffective stroke rehab you had? It is up to you to change the trajectory of stoke rehab. Your stroke medical professionals have failed for decades. I suggest firings start at the top with the board of directors.

 

Treadmill walking with partial body weight support versus floor walking in hemiparetic subjects

 Stefan Hesse, MD, Matthias Konrad, MD, Dietmar Uhlenbrock, MPhil

ABSTRACT. 

Hesse S, Konrad M, Uhlenbrock D. Treadmill walking with partial body weight support versus floor walking in hemiparetic subjects. Arch Phys Med Rehabil 1999;80: 421-7. 

Objective: 

To compare the gait of hemiparetic subjects walking on a treadmill with various body weight supports and walking on the floor. Design: Hemiparetic subjects walked on a treadmill, secured in a harness, with no body weight support and with 15% and 30% body weight relief, and walked on a floor. 

Setting: 

Kinematic laboratory of a department of rehabilitation. 

Subjects: 

Eighteen hemiparetic stroke patients. 

Main Outcome Measures: 

Gait cycle parameters and kinesiologic electromyogram of six muscles of the affected side and of two muscles of the nonaffected side. 

Results: 

On the treadmill, patients walked more slowly because of a reduced cadence, with a longer single stance period of the paretic limb, more symmetrically, and with a larger hip extension (multivariate profile analysis, p < .05). The mean functional activities of the gastrocnemius muscle and of the first crest of the erector spinae of the paretic side were smaller on the treadmill (univariate test, p < .05). Further, the premature activity of the gastrocnemius muscle, indicating spasticity, was less on the treadmill (univariate test, p < .05); correspondingly the qualitative muscle pattern analysis re- vealed less co-contraction between the gastrocnemius and tibialis anterior muscles in 11 of the 18 subjects. 

Conclusions: 

Treadmill training with partial body weight support in hemiparetic subjects allows them to practice a favorable gait characterized by a greater stimulus for balance training because of the prolonged single stance period of the affected limb, a higher symmetry, less plantar flexor spasticity, and a more regular activation pattern of the shank muscles as compared with floor walking.

1999 by the American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation