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1.1 1 xml info:srw/schema/1/mods-v3.2 Banina M C author Molad R author Solomon J S author Berman S author Soroker N author Frenkel-Toledo S author Liebermann D G author Levin M F author 2020 English Purpose: Motor recovery of the upper limb (UL) is related to exercise intensity, defined as movement repetitions divided by minutes in active therapy, and task difficulty. However, the degree to which UL training in virtual reality (VR) applications deliver intense and challenging exercise and whether these factors are considered in different centres for people with different sensorimotor impairment levels is not evidenced. We determined if (1) a VR programme can deliver high UL exercise intensity in people with sub-acute stroke across different environments and (2) exercise intensity and difficulty differed among patients with different levels of UL sensorimotor impairment.Methods: Participants with sub-acute stroke (<6 months) with Fugl-Meyer scores ranging from 14 to 57, completed 10 approximately 50-min UL training sessions using three unilateral and one bilateral VR activity over 2 weeks in centres located in three countries. Training time, number of movement repetitions, and success rates were extracted from game activity logs. Exercise intensity was calculated for each participant, related to UL impairment, and compared between centres.Results: Exercise intensity was high and was progressed similarly in all centres. Participants had most difficulty with bilateral and lateral reaching activities. Exercise intensity was not, while success rate of only one unilateral activity was related to UL severity.Conclusion: The level of intensity attained with this VR exercise programme was higher than that reported in current stroke therapy practice. Although progression through different activity levels was similar between centres, clearer guidelines for exercise progression should be provided by the VR application.Implications for rehabilitationVR rehabilitation systems can be used to deliver intensive exercise programmes.VR rehabilitation systems need to be designed with measurable progressions through difficulty levels. Stroke difficulty exercise therapy intensity personalized exercise upper limb virtual reality PMID:32421460 exported from refbase (https://refbase.nfshost.com/show.php?record=106), last updated on Thu, 21 May 2020 20:11:53 +0000 text http://www.ncbi.nlm.nih.gov/pubmed/32421460 http://www.ncbi.nlm.nih.gov/pubmed/32421460 10.1080/17483107.2020.1765421 32421460 Banina_etal2020 2020 continuing periodical academic journal 1 7 1748-3107 1