A meta-analysis of randomized controlled trials looked at virtual reality therapy for patients with hemiplegia after a stroke. The study included 844 patients who received either virtual reality therapy or conventional rehabilitation or a sham control. Researchers found that virtual reality therapy significantly enhanced hand function compared to other treatments. This improvement was measured using several standard hand performance tests. The analysis also looked at activities of daily living and quality of life as secondary outcomes. No safety concerns were reported in the included studies. However, the researchers noted considerable heterogeneity among the studies, which means the results varied across different trials. This variation suggests that factors like the specific type of virtual reality system or patient characteristics may influence outcomes. The main reason to be careful is that the high level of heterogeneity limits how broadly these results can be applied. Readers should understand that while virtual reality therapy shows promise, the effect size varies. The most significant benefits were seen in semi-immersive virtual reality systems and when the total treatment duration exceeded 12 hours. This information helps patients and clinicians understand where virtual reality therapy might be most effective for stroke recovery.
Meta-analysis shows semi-immersive VR improves hand function in post-stroke patients with over 12 hours of therapyVirtual Reality Therapy Improves Hand Function After Stroke
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Key Takeaway
Note considerable heterogeneity when interpreting semi-immersive VR benefits for hand function in post-stroke patients.
This meta-analysis of randomized controlled trials synthesized evidence regarding virtual reality therapy for patients with hemiplegia after stroke. The analysis included 844 participants and assessed hand-specific performance metrics as well as activities of daily living and quality of life. The primary outcome measured hand function using scales such as the Fugl-Meyer upper extremity subscale and the Box and Block Test.
The pooled results demonstrated that virtual reality therapy significantly enhanced hand function with a standardized mean difference of 0.68 and a 95% CI of 0.41-0.95. The p-value was less than 0.00001. Subgroup analysis indicated that semi-immersive VR yielded the most significant benefit with a standardized mean difference of 1.03. Additionally, training durations greater than 12 hours were associated with a pooled standardized mean difference of 0.94 and a 95% CI of 0.66-1.23.
The authors noted considerable heterogeneity with an I-squared value of 71%. Safety data, including adverse events and discontinuations, were not reported in the included studies. The authors caution against overstating the effect of semi-immersive VR or longer duration without acknowledging this heterogeneity. Practice relevance suggests that semi-immersive VR therapy improves hand function in post-stroke patients, particularly when the total cumulative treatment duration exceeds 12 hours.
What this means for you:
Virtual reality therapy improves hand function in stroke patients, especially with semi-immersive systems and over 12 hours of treatment. More on Stroke
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View Original Abstract ↓
BackgroundHemiplegia resulting from a stroke frequently causes considerable difficulties in hand function. Virtual reality (VR) therapy has evolved as an innovative and engaging method to facilitate sensorimotor rehabilitation.ObjectiveThis meta-analysis assessed the efficacy of VR-based therapies on hand function in post-stroke hemiplegic patients. The study evaluated the impact of treatment duration, type of VR (immersive, semi-immersive, non-immersive), and stroke stage (subacute versus chronic) on outcomes.MethodsA comprehensive search of six databases until September 2024 identified randomized controlled trials (RCTs) that compared VR therapy with conventional rehabilitation or sham control. The primary outcomes consisted of validated, hand-specific performance metrics, including the Fugl-Meyer upper extremity subscale, Action Research Arm Test, Box and Block Test, Jebsen-Taylor Hand Function Test and Box and Block Test.ResultsTwenty-five RCTs involving 844 participants were evaluated. VR therapy significantly enhanced hand function (SMD = 0.68; 95% CI: 0.41-0.95; p < 0.00001), while there was considerable heterogeneity (I = 71%). Subgroup analysis indicated that semi-immersive VR had the most significant benefit (SMD = 1.03), whereas interventions with a cumulative training duration beyond 12 h, along with those administered to subacute patients, demonstrated greater effect size in hand function relative to shorter interventions (pooled SMD for >12 h = 0.94; 95% CI: 0.66-1.23).ConclusionThis meta-analysis suggests that semi-immersive VR therapy improves hand function in post-stroke patients, especially when the total cumulative treatment duration exceeds 12 h. Future research should determine the principal treatment elements, establish uniform dosing methods, and evaluate long-term results, including activities of daily living and quality of life.
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