Nam Hun Kim1, Michael Wininger2, William Craelius3. 1. Rutgers University Rehabilitation Laboratory, Department of Biomedical Engineering, Rutgers, The State University of New Jersey, Piscataway, New Jersey; Human Performance and Movement Analysis Laboratory, Kessler Foundation Research Center, West Orange, New Jersey. Electronic address: nkim@KesslerFoundation.net. 2. Rutgers University Rehabilitation Laboratory, Department of Biomedical Engineering, Rutgers, The State University of New Jersey, Piscataway, New Jersey; Clinical Brain Disorders Branch, National Institute of Mental Health, Bethesda, Maryland. 3. Rutgers University Rehabilitation Laboratory, Department of Biomedical Engineering, Rutgers, The State University of New Jersey, Piscataway, New Jersey.
Abstract
STUDY DESIGN: A clinical measurement study. PURPOSE: To test the applicability of Fitts' paradigm to grasping tasks in individuals with chronic stroke. INTRODUCTION: Fitts' Law relates the time of target achievement to task difficulty in repetitive motor tasks. METHODS: Six male chronic stroke patients performed repetitive actuation of a grip force dynamometer with their affected hands for 12 sessions over four to six weeks. RESULTS: Movement times followed Fitts' behavior with correlations of R(2)>0.8 for all subjects. Grasp control improved during training, as indicated by an average decrease in Fitts' slope of 26% at high difficulty levels (p<0.05), and decreases in the number of force corrections and in jerkiness, both at p<0.001 level. CONCLUSIONS: The Fitts' grip force targeting protocol provides an objective standardized instrument for grasp proficiency quantification and a potentially efficacious platform for hand training for persons with stroke. LEVEL OF EVIDENCE: N/A. Copyright (c) 2010 Hanley & Belfus. Published by Elsevier Inc. All rights reserved.
STUDY DESIGN: A clinical measurement study. PURPOSE: To test the applicability of Fitts' paradigm to grasping tasks in individuals with chronic stroke. INTRODUCTION:Fitts' Law relates the time of target achievement to task difficulty in repetitive motor tasks. METHODS: Six male chronic strokepatients performed repetitive actuation of a grip force dynamometer with their affected hands for 12 sessions over four to six weeks. RESULTS: Movement times followed Fitts' behavior with correlations of R(2)>0.8 for all subjects. Grasp control improved during training, as indicated by an average decrease in Fitts' slope of 26% at high difficulty levels (p<0.05), and decreases in the number of force corrections and in jerkiness, both at p<0.001 level. CONCLUSIONS: The Fitts' grip force targeting protocol provides an objective standardized instrument for grasp proficiency quantification and a potentially efficacious platform for hand training for persons with stroke. LEVEL OF EVIDENCE: N/A. Copyright (c) 2010 Hanley & Belfus. Published by Elsevier Inc. All rights reserved.
Authors: Francesca Ferrari; Courtney E Shell; Zachary C Thumser; Francesco Clemente; Ela B Plow; Christian Cipriani; Paul D Marasco Journal: Front Neurorobot Date: 2021-03-01 Impact factor: 2.650
Authors: Claudio Castellini; Panagiotis Artemiadis; Michael Wininger; Arash Ajoudani; Merkur Alimusaj; Antonio Bicchi; Barbara Caputo; William Craelius; Strahinja Dosen; Kevin Englehart; Dario Farina; Arjan Gijsberts; Sasha B Godfrey; Levi Hargrove; Mark Ison; Todd Kuiken; Marko Marković; Patrick M Pilarski; Rüdiger Rupp; Erik Scheme Journal: Front Neurorobot Date: 2014-08-15 Impact factor: 2.650