Effects of a 6-Week Treadmill Training With and Without Virtual Reality on Frailty in People With Multiple Sclerosis

Tobia Zanotto, Irina Galperin, Danya Pradeep Kumar, Anat Mirelman, Shahar Yehezkyahu, Keren Regev, Arnon Karni, Tanja Schmitz-Hübsch, Friedemann Paul, Sharon G. Lynch, Abiodun E. Akinwuntan, Jianghua He, Bruce R. Troen, Hannes Devos, Jeffrey M. Hausdorff, Jacob J. Sosnoff

Research output: Contribution to journalArticlepeer-review

Abstract

Objective: To examine the effects of a cognitive-motor rehabilitation program consisting of treadmill training (TT) augmented by virtual reality (TT+VR) on frailty in people with multiple sclerosis (pwMS). Design: Secondary analysis from a multicenter randomized controlled trial investigating the effects of TT+VR, compared with TT only, on measures of mobility and cognitive function in pwMS. Setting: Four university research laboratories in 3 countries. Participants: A total of 124 pwMS were randomized into the parent trial. Here, we studied a subset of n = 83 participants (mean age, 49.4±9.3y; 73.5% female; expanded disability status scale range, 2.0-6.0), who completed the intervention and had complete preintervention and postintervention frailty data. Interventions: Participants were randomly allocated to TT+VR (n=44) or TT (n=39). Both groups trained 3 times a week for 6 weeks. Main Outcome Measures: Frailty was assessed using a 40-item frailty index (FI) through standard validated procedures and represented the primary study outcome. Two exploratory frailty indices were also computed by isolating health-related deficits involving the cognitive (FI-physical) or physical (FI-cognitive) domains from the main FI. The assessments were performed at baseline and after 6 weeks, upon intervention completion. Results: The mean FI of study participants at baseline was 0.33±0.13, indicating a moderate average level of frailty. FI scores improved in both TT+VR and TT groups participants (pooled mean ΔFI, 0.024; 95% CI, 0.010-0.038; F=10.49; P=.002; ηp2=0.115), without any group-by-time interaction (F=0.82; P=.367; ηp2=0.010). However, a significant group-by-time interaction was found for pretraining and posttraining changes in FI-cognitive (F=5.74; P=.019; ηp2=0.066), suggesting a greater improvement for TT+VR group participants than for TT group participants. Conclusions: TT with or without virtual reality can reduce frailty levels in pwMS. While both TT and TT+VR had a positive effect on overall frailty, only TT+VR improved cognitive aspects of frailty and may represent an appropriate strategy for counteracting frailty in pwMS.

Original languageAmerican English
Pages (from-to)187-194
Number of pages8
JournalArchives of Physical Medicine and Rehabilitation
Volume106
Issue number2
DOIs
StatePublished - 1 Feb 2025

Keywords

  • Cognitive function
  • Frailty
  • Multiple sclerosis
  • Rehabilitation
  • Virtual Reality

All Science Journal Classification (ASJC) codes

  • Rehabilitation
  • Physical Therapy, Sports Therapy and Rehabilitation

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