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Bilateral training improves motor function in post-stroke patients with distal upper extremity hemiplegiaBilateral Training Shows Better Results for Stroke Arm Recovery

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Key Takeaway
Consider bilateral training over unilateral training to improve motor function in post-stroke patients with dUE hemiplegia.

This meta-analysis evaluated the efficacy of bilateral training (BT) compared to unilateral training (UT) for patients with post-stroke distal upper extremity (dUE) hemiplegia. The analysis included 12 RCTs focusing on motor function improvements in the upper extremity.

The synthesis found that BT led to greater improvements in overall upper extremity motor function (FMA-UE score, p=0.04) and specifically in dUE function (FMA-UE distal score, p=0.02). Subgroup analyses further supported the benefit of BT for stroke survivors with at least 4 weeks post-stroke onset (p=0.03) and for those undergoing a treatment duration of at least 4 weeks (p=0.0006).

The authors note that the evidence is limited by a small number of studies and significant heterogeneity among the included trials. Clinical application should be interpreted with caution due to these limitations, though the results suggest BT may be more effective than UT for motor recovery in both upper extremity and distal upper extremity regions.

How this fits prior evidence

This finding addresses a gap in rehabilitation protocols for post-stroke patients with distal upper extremity hemiplegia. While prior evidence has explored alternative therapies such as hydrokinesitherapy to improve balance function, this meta-analysis specifically focuses on the comparative efficacy of bilateral versus unilateral training for motor recovery.

Researchers looked at how different types of exercise help people with stroke-related weakness in their hands and arms. They compared bilateral training, where both sides of the body are worked together, to unilateral training, which focuses on only one side. The study focused specifically on patients who had difficulty moving their distal upper extremities after a stroke.

The results showed that patients who used bilateral training saw greater improvements in motor function scores than those who used unilateral training. This was true for both general arm movement and the specific movements of the hand and wrist. These benefits were also noted in groups who began treatment at least four weeks after their stroke occurred.

Because this analysis included a small number of studies with different methods, the results should be viewed with caution. While the data suggests that training both arms together is more effective for recovery, it is not a guarantee for every patient. You should talk to your doctor or physical therapist to see if this specific type of exercise is right for your recovery plan.

What this means for you:
Bilateral training may improve arm and hand movement after a stroke compared to training only one side.

Common questions

What is bilateral training?

Bilateral training involves exercising both sides of the body at the same time. In this study, it was compared to unilateral training, which focuses on only one side. The research suggests that using both arms during therapy may lead to better motor function for stroke patients than focusing on just one arm.

Who does this finding help?

This finding specifically relates to people who have suffered a stroke and have hemiplegia, which is weakness in the arm or hand. The study showed that bilateral training was particularly beneficial for those whose symptoms appeared at least four weeks before they began their treatment.

How much better is it than other methods?

The analysis found that patients using bilateral training had greater improvements in motor function scores compared to those using unilateral training. These improvements were noted for both general upper extremity movement and specific distal functions, such as moving the hand and wrist.

Study Details

Study typeMeta analysis
EvidenceLevel 1
Follow-up0.9 mo
PublishedAug 2026
View Original Abstract ↓
PurposeHemiplegia in the distal upper extremity (dUE) is a common post-stroke impairment that severely limits daily activities and functional recovery. Although upper-extremity rehabilitation typically focuses on unilateral training (UT), bilateral training (BT) is gaining recognition for its effectiveness in promoting post-stroke motor recovery. Few studies have characterized the effect of BT on dUE; therefore, the degree to which the effectiveness of BT can be predicted by clinical factors, such as patient characteristics and intervention settings, remains unclear. This study investigated the effectiveness of BT versus that of UT on dUE hemiplegia and analyzed the factors determining BT effectiveness.MethodsA systematic literature search was conducted in PubMed, Embase, Cochrane Library, Scopus, and Web of Science for randomized controlled trials (RCTs) published before March 2024. The study included RCTs that evaluated motor recovery in post-stroke patients with dUE hemiplegia, using outcome measures such as the Fugl-Meyer Assessment-Upper Extremity (FMA-UE), Action Research Arm Test, Wolf Motor Function Test, Box and Block Test, and the modified Ashworth Scale. Data were extracted on the effectiveness of BT and UT, focusing on motor function improvements. Subgroup analyses were conducted based on stroke onset timing and intervention settings.ResultsA total of 12 RCTs were included. The results showed that BT led to greater improvements in UE motor function (FMA-UE score,  = 0.04) and dUE function (FMA-UE distal score,  = 0.02) compared to UT. Subgroup analyses identified that stroke survivors with ≥4 weeks post-stroke onset ( = 0.03), and a treatment duration of at least 4 weeks ( = 0.0006) showed greater benefit from BT.ConclusionBT was more effective than UT for post-stroke motor recovery in both UE and dUE. Although stroke onset timing and intervention settings may influence BT outcomes, caution is needed when applying these findings due to the small number of studies and the heterogeneity of the included studies.
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