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Modified Constraint-Induced Movement Therapy for Stroke

Original Editor - Alyssa Whelan as part of the Queen's University Neuromotor Function Project
Top Contributors - Alyssa Whelan, Vidya Acharya, Kim Jackson, Nadia Kashetsky, Maryellen Tighe, PT, DPT, Jessica Craig, Maura Leslie, Amrita Patro, Dinu Dixon and Alexandra Stead  

This article is currently under review and may not be up to date. Please come back soon to see the finished work! (30/09/2026)

Introduction

Modified constraint-induced movement therapy (mCIMT) is an intervention to address learned non-use and decreased motor function after a neurological injury by reducing the usage of the less affected upper extremity during gross motor tasks, fine motor tasks and ADLs.

mCIMT is a less intensive form of constraint-induced movement therapy (CMIT), an intervention originally designed to improve functionality and mobility in the more affected upper extremity post-stroke.[1] Due to mCIMT's success in this area, the principles have also been applied to lower extremity interventions post-stroke,[2] and upper extremity interventions in a pediatric setting, such as treating obstetric brachial plexus palsy (OBPP).[3] 

The original CIMT involves the restraint of the individual’s less impaired upper extremity with the use of a safety mitt. The mitt is left on for 90% of the day, over a two week intervention period in conjunction with six hours a day, five days of the week of task-specific training.[1] The modified CIMT (mCIMT) protocol was developed as an alternative to the intensive nature of CIMT. It addresses low patient adherence[4] by implementing less time utilizing constraint over a longer intervention period[5] with fewer hours of task specific training each day.[6] Because mCIMT application is not as homogeneous as CIMT application, research remains unclear on dosage. [2][3] For example, a systematic review on the use of mCIMT for OBPP found intervention periods ranging from two to 14 weeks.[3]

The National Clinical Guideline for Stroke for the United Kingdom and Ireland and the Guideline for Adult Stroke Rehabilitation and Recovery from the American Heart Association and American Stroke Association[7] both support the use of mCTIB for upper extremity motor recovery after a stroke.

Components of mCIMT

Current evidence explores many different formats of mCIMT for stroke rehabilitation.

These protocols differ in practice and constraint time; however, the three fundamental components that are utilized in every session of mCIMT are:[8]

  1. Restraint of the less impaired upper extremity, using a mitt.
  2. Repetitive Task Practice.
  3. Application of behavioural techniques
    • Shaping is deemed the most important technique:
      • Shaping involves matching the difficulty of tasks performed to the improvements the patients make and providing encouraging feedback immediately after any gain in function[9].
      • Shaping tasks are determined by therapists based on: individual movement deficits at specific joints, joint movements that, in the therapists opinion, has the most potential for improvement, and patient preference of specific tasks that would produce the movements above[10]. With shaping, progression of movement tasks is made in a systematic, quantified, and parametric way on tasks that are individualized for the patient. This makes the intervention time-specific and meaningful to the patient/client, as well as positive - as feedback is always positive and encouraging, very rarely negative [10].

A 2025 systematic review looked at 16 studies (covering 612 patients) and found a wide variability in dosage, from 180 minutes of physical therapy for 10 consecutive days to 30 minutes of physical therapy three days a week for 10 weeks.[11] Interventions from two to 12 weeks and durations of 30 to 180 minutes were all found to improve upper limb function in this review, however, the authors noted that the greatest effect was seen in patients who were at least two months post-stroke and chronic stroke patients, with limited efficacy in acute stroke patients.[11]

mCIMT includes a distributed practice schedule, whereas CIMT employs the massed practice. mCIMT protocols include less clinical treatment time with therapists, providing the patients with an increased amount of time to be spent on home-based practice using the more affected upper extremity functionally and during activities of daily living.[8]

Outcome Measures

Outcome measures most commonly used throughout the literature alongside mCIMT include the Fugl-Meyer Assessment and Functional Independence Measure (FIM) for disability, and Action Research Arm for motor function.[12][13]

Other outcome measures used to quantify the progress of the mCIMT intervention for individuals who have experienced stroke include:[13]

Measures of disability:

Measures of arm motor function:

Measures of perceived arm motor function:

  • Motor activity log (MAL)
  • Amount of use (AoU)
  • Quality of use (QoU)

Measures of arm motor impairment:

Measures of dexterity:

  • Nine-hole peg test (NHPT) [low score indicated positive outcome]
  • Grooved pegboard test (GPT)

Measures of quality of life:

Evidence

mCIMT has been shown to improve upper extremity function in acute and sub-acute stroke patients in inpatient hospital settings, according to a 2025 meta analysis.[14] The effectiveness of UE recovery has been observed across all stages of recovery post-stroke,[12] though the majority of evidence comes from research on chronic stroke population.

Using mCIMT to optimize therapy intensity has been show to improve upper limb function among stroke survivors, including in patients receiving less than 40 hours total of therapist training, but spending at least 10 hours a day in the restraint.[15] This is much less than the time required for CIMT listed above. Some studies suggest that performing aerobic exercise prior to m-CIMT enhances the outcomes[16].

Furthermore, mCIMT has also been shown to be effective in lower extremity treatment, improving motor function, mobility, balance, strength, weight-bearing, and walking ability in patients after stroke.[17]

A single-blind, randomized parallel study found that both individual and group mCIMT increases the function and use of the upper extremity, with the increases being higher with the group mCIMT[18].

In comparison to the original CIMT specifically, meta-analytic evidence suggests that mCIMT is just as influential in promoting the use and functional recovery of an affected limb post-stroke.[12] Moreover, the decrease in clinical time and use of resources involved in mCIMT makes it easier and more feasible to manage for both the therapist and patient/client[12]. A 2011 review examined the literature on the 10-week, mCIMT protocol, and showed that it is an effective treatment for the promotion of recovery in the upper extremity post stroke[12]. The outcome measures used (UE of the Fugl-Meyer, ARAT, Motor Activity Log (MAL)) all demonstrated a positive improvement for patients using the mCIMT protocol in regard to upper extremity impairment and function. In the majority of studies analyzed, the average degree of change for patients was greater than the MCID of the outcome measures used, indicating that the patients who received mCIMT saw a change in UE function that is clinically meaningful, compared to control or no-therapy groups [12].

A literature review incorporating findings from studies on Constraint-Induced Movement Therapies (the original Constraint-Induced Movement Therapy and the modified Constraint-Induced Movement Therapy) in adult stroke patients concluded more encouraging outcomes with mCIMT as it includes a longer course of training which allows enough time for adaptation to new changes[19].

Applications of mCIMT

As the research supporting mCIMT improves, it is also being combined with other interventions to improve efficacy. For patients who receive botulinum toxin (BTX) injections for spasticity, mCIMT is shown to improve distal motor recovery at 4 weeks and 3 months and increase real-world use of the affected limb compared with patients who received injection and no therapy.[20] The use of mCIMT for OBPP is indicated for at least two weeks with further improvements when combined with BTX.[3]

mCIMT is more effective in the two weeks immediately post stroke when paired with transcranial direct current stimulation, showing improvements with just one week of this joint therapy.[21]

There has been a small study evaluating the effectiveness of a telehealth-only mCIMT approach. It showed improvements in upper extremity motor functions, grip strength, fine dexterity, the amount and quality of use of the UE in daily living activities, and daily living activities in stroke patients compared to non mCIMT patients who also received telehealth treatment post-stroke.[22]

Information about the use of mCIMT for the lower extremity is limited by the same heterogeneity of upper extremity interventions, with one additional variable: if the constraint should be used at all.[17] A 2025 review looked at 36 studies (covering more than 900 patients) and found a range in dosage ranging from a single 20 minute gait training session to six hours a day for two weeks, or 84 hours of interventions, improved patient outcomes[17] How the less affected limb was restricted was highly variable, including: knee orthotics, slings for the upper extremity, an insole or lift at the foot, a weight at the ankle and no restraint, simply focusing task-specific therapy on the affected leg.[17]

The use of mCIMT has been trialled in other nerve injury patients, with one recent case study showing improvements in upper extremity function after a 10-week protocol for a patient with incomplete tetraplegia C5 American Spinal Injury Association (ASIA) Impairment Scale D.[23]

Limitations of mCIMT

A protocol for mCIMT is not consistently applied for either upper extremity[11] or lower extremity[17] usage, resulting in unclear clinical results as duration, intensity and dosage can vary between providers.

Despite this limitation, a recent survey shows that six or more hours of restraint wear per day with six hours of training per week is the optimal amount, a factor which limits patient and clinician participation.[24] Patient participation is also limited by cognition, with studies screening for patient understanding of the protocols and procedures.[2] [11][12][14][15][3]

Summary

CIMT is an effective therapy for patients post-stroke. While it was initially created using an intensive restraint and retraining protocol, mCIMT has shown good efficacy with much less clinician time and patient restraint wearing time. The protocol was initially developed for the upper extremity but the principles have shown to be effective in lower extremity interventions. The current interventions are being combined with other methods to improve efficacy and are being trialled on patients with other neurological injuries.

References

  1. ↑ 1.0 1.1 Reiss AP, Wolf SL, Hammel EA, McLeod EL, Williams EA. Constraint-induced movement therapy (CIMT): Current perspectives and future directions. Stroke Research and Treatment. 2012.
  2. ↑ 2.0 2.1 2.2 Zhou L, Chu H, Cao M, Abdul Rahim NA, Ahmad Yusof H, Hou Y. Modified constraint-induced movement therapy for lower extremity intervention on patients with stroke: A Scoping Review. Sports Medicine and Health Science. 2025 Jun 25;8(3):291-301.
  3. ↑ 3.0 3.1 3.2 3.3 3.4 Sicari M, Longhi M, D'Angelo G, Boetto V, Lavorato A, Cocchini L, Beatrici M, Battiston B, Garbossa D, Massazza G, Titolo P. Modified constraint induced movement therapy in children with obstetric brachial plexus palsy: a systematic review. European Journal of Physical and Rehabilitation Medicine. 2022 Feb;58(1):43-50.
  4. ↑ Blanton S, Wolf S. An application of upper-extremity constraint-induced movement therapy in a patient with subacute stroke. Physical Therapy. 1999;79(9):847–53.
  5. ↑ Page S, Sisto S, Levine P, McGrath R. Efficacy of Modified Constraint-Induced Movement Therapy in Chronic Stroke: A Single-Blinded Randomized Controlled Trial. Archives of Physical Medicine and Rehabilitation. 2004;85(1):14–8.
  6. ↑ Viana R, Teasell R. Barriers to the Implementation of Constraint-Induced Movement Therapy Into Practice. Topics in Stroke Rehabilitation. 2012;19(2):104–14.
  7. ↑ Richards L, Ifejika N, Stein J, MD, Bahouth M, Saylor M, Barrett A, Chen P, Deutsch A, Dusenbury W, Ellis C, Eng J, Fleet J, Ford H, Grattan E, Harvey R, Jones C, Krishnan C, Kutzle S, Matthews D, Mazwi N, Minga J, Nilsen D, Noser E, Porter H, Raghavan P, Rose D, Skidmore E, St-Onge M, Stoykov M, Schettini A, Terrill A, Tirschwell D, Vilar P, Whitaker-Hilbig A, Zorowitz R. 2026 Guideline for Adult Stroke Rehabilitation and Recovery: A Guideline From the American Heart Association and American Stroke Association. Stroke. 2026 Aug;57(10).
  8. ↑ 8.0 8.1 Fleet A, Page S, MacKay-Lyons M, Boe S. Modified Constraint-Induced Movement Therapy for Upper Extremity Recovery Post Stroke: What Is the Evidence? Topics in Stroke Rehabilitation. 2014;21(4):319–31.
  9. ↑ Uswatte G, Taub E, Morris D, Barman J, Crago J. Contribution of the shaping and restraint components of Constraint-Induced Movement therapy to treatment outcome. NeuroRehabilitation. 2006;21(2):147–56. =
  10. ↑ 10.0 10.1 Taub E, Uswatte G, King D, Morris D, Crago J, Chatterjee A. A placebo-controlled trial of constraint-induced movement therapy for upper extremity after stroke. Stroke. 2006;37(4):1045–9.
  11. ↑ 11.0 11.1 11.2 11.3 Liu J, Wang Z, Wang C, Zhang Y. Interventional effects of modified constraint-induced movement therapy on upper limb function in patients who had a stroke: systematic review and meta-analysis. BMJ Open. 2025 May 30;15(5):e094309.
  12. ↑ 12.0 12.1 12.2 12.3 12.4 12.5 12.6 Shi YX, Tian JH, Yang KH, Zhao Y. Modified constraint-induced movement therapy versus traditional rehabilitation in patients with upper-extremity dysfunction after stroke: A systematic review and meta-analysis. Archives of Physical Medicine and Rehabilitation. 2011;92(6):972–82.
  13. ↑ 13.0 13.1 Sirtori V, Corbetta D, Moja L, Gatti R. Constraint-induced movement therapy for upper extremities in stroke patients. Cochrane database of Systematic Reviews. 2009;(4):CD004433.
  14. ↑ 14.0 14.1 Hansen R, Joy A, Lockwood K. Effectiveness of modified constraint-induced movement therapy on upper limb function of stroke survivors in inpatient hospital settings: a systematic review and meta-analysis: Modified Constraint-Induced Movement Therapy in Hospital. Disability and Rehabilitation. 47(23), 6011–6019.
  15. ↑ 15.0 15.1 Psychouli P, Anastasiou C, Mamais I, Papasalourou NE. Systematic Review and Meta-analysis of the Efficacy of Shorter Duration Modified Constraint-Induced Movement Therapy (mCIMT) Programs. Archives of Rehabilitation Research and Clinical Translation. 2026 Feb 26;8(2):100604.
  16. ↑ da Silva ES, Santos GL, Catai AM, Borstad A, Furtado NP, Aniceto IA, Russo TL. Effect of aerobic exercise prior to modified constraint-induced movement therapy outcomes in individuals with chronic hemiparesis: a study protocol for a randomized clinical trial. BMC neurology. 2019 Dec 1;19(1):196.
  17. ↑ 17.0 17.1 17.2 17.3 17.4 Zhou L, Chu H, Cao M, Abdul Rahim N, Ahmad Yusof H, Hou Y. Modified constraint-induced movement therapy for lower extremity intervention on patients with stroke: A Scoping Review. Sports Medicine and Health Science. 2025 Jun 25;8(3):291-301.
  18. ↑ Doussoulin A, Rivas C, Rivas R, Saiz J. Effects of modified constraint-induced movement therapy in the recovery of upper extremity function affected by stroke: a single-blind randomized parallel trial-comparing group versus individual intervention. International Journal of Rehabilitation Research. 2017;1, 35-40.
  19. ↑ Bani-Ahmed AA. Post-stroke motor recovery and cortical organization following Constraint-Induced Movement Therapies: a literature review. Journal of Physical Therapy Science. 2019;31(11):950-9.
  20. ↑ Zhang W, Mei S, Wen M, Jiao K, Zhao L, Zhang R. Home-based modified constraint-induced movement therapy improves distal motor outcomes after botulinum toxin A injection in chronic stroke. Frontiers in Neurology. 2026 Sep 7;17:1906566.
  21. ↑ Garrido M, �Alvarez E, Acevedo F, Moyano A, Castillo N, Cavada G. Early transcranial direct current stimulation with modified constraint-induced movement therapy for motor and functional upper limb recovery in hospitalized patients with stroke: A randomized, multicentre, double-blind, clinical trial. Brain Stimulation. 2023:16;40-47
  22. ↑ Saygili F, Guclu-Gunduz A, Eldemir S, Eldemir K, Ozkul C, Gursoy GT. Effects of modified-constraint induced movement therapy based telerehabilitation on upper extremity motor functions in stroke patients. Brain Behavior. 2024 Jun;14(6):e3569.
  23. ↑ Antoniadou E, Vassilopoulou P, Marini K, Patouha M, Tsoukanelis S, Panagea E, Panagiotopoulos E. Use of the Modified Constraint Induced Movement Therapy Protocol to Improve Function of the Predominant Arm on a Patient With Incomplete Spinal Cord Injury. American Journal of Physical Medicine & Rehabilitation. 2021. 101(4), e62-e64.
  24. ↑ Yang Y, Lin C, Chen P, Jhou H. Timing and Dose of Constraint-Induced Movement Therapy after Stroke: A Systematic Review and Meta-Regression. Journal of Clinical Medicine. 2023 Mar 15;12(6):2267.
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