Constraint Induced Movement Therapy
Medically reviewed by Karen Murray, OT, CHT, CSRS - written by Stroke-rehab.com

Constraint Induced Movement Therapy (CI) involves limiting the movement of the strong side and “forcing” the weaker side to attempt activities.  The underlying principle of CIMT is to encourage the use of the weak limb and avoid learned non-use phenomenon, where individuals tend to rely heavily on their unaffected or stronger limb. CIMT aims to stimulate neural reorganization and facilitate functional recovery. By restricting the use of the unaffected limb, the brain is encouraged to rewire itself and form new neural connections, leading to improvements in motor control and functionality in the affected limb.

CIMT has been shown to be effective in improving upper limb function in various conditions, such as stroke, cerebral palsy, and traumatic brain injuries. It has gained popularity due to its focus on task-specific training and the positive neuroplastic changes it can induce in the brain.

Some of the original studies using this treatments had patients restrain their unaffected arms for 90% of waking hours (this can be done via a sling, mitt, or other restraining device) and had patients use their affected arm for 6 hours a day over a period of two weeks for daily activities. There is a modified version of the technique that has patients use the affected arm for 3 hours a day over a longer period of time. 

The non-affected arm is usually restrained from three to six hours a day and the patient attempts to use the affected arm during this time. If the stroke patient can tolerate restraint of the stronger arm for 6 hours a day, then CI therapy is usually prescribed for 2 weeks. If the patient cannot tolerate six hours, restraint time is sometimes reduced to three hours a day but attempted over a longer period of time (e.g. a month or six weeks).

Constraint Induced Movement Therapy Process

The typical process of CIMT involves the following steps:

Evaluation: A thorough assessment is conducted to determine the individual's specific motor impairments, functional limitations, and overall eligibility for CIMT.

Constraint: The unaffected limb is placed in a sling or splint, which restricts its movement. This forces the individual to use the affected limb more frequently and with increased effort.

Repetitive Task Practice: The person participates in various activities or exercises that focus on the use of the affected limb. These tasks are often challenging but tailored to the individual's abilities.

Shaping: The therapist may gradually increase the complexity and difficulty of the tasks to promote continuous improvement.

Transfer Package: Strategies and techniques are taught to the individual to help transfer the gains made during therapy into real-life situations.

Constraint Induced Movement Therapy Activity Ideas

It may be hard for the stroke patient to think of tasks that can be done with the weaker arm, but there are many daily activities than can be used to incorporate the affected side. Some ideas for tasks to try with the weak arm include:

Dusting	Turn faucet on or off
Turn pages in a book	Move, scoot or slide objects
Wash your face	Turn a door knob
Scoop beans	Brush Hair
Pick up objects	Pour liquids back and forth
Draw or Write	Finger Paint or Paint
Pet your cat or dog	Hit a balloon
Squeeze a ball	Knead Dough
Turn Cards Over	Push keys on a piano or keyboard

Some other ideas for tasks to try with the weak arm include:

• Flip a light switch
• Flush the toilet
• Pinch clothespins
• Roll a ball
• Play with putty
• Place bean bags or other objects on a target
• Try to push up from sit to stand with the weak arm
• Play an app on a cell phone or tablet
• Carry a light bucket or briefcase by the handle
• Eat finger foods
• Play games, use pegboards, or other activities requiring arm/hand use
• Plant seeds or participate in gardening tasks
• Play a musical instrument such as a drum, xylophone, or tambourine
• Participate in food preparation or cooking tasks such as stirring, pouring from containers, assembling a sandwich or fruit plate

CI therapy is hard work and may not be right for everyone, but a good concept to take from it is that you must use the affected arm if you want to see improvement.  I can’t tell you how many stroke patients I see that never attempt to use their weak arm except during a one hour therapy session two to three times a week.  This is not enough to help improve functional return in the arm or to make neuroplastic changes in the brain.  Even if you do not try CI therapy, it is a good idea to attempt activities like those above on a daily basis with the weak arm.  For more information regarding Constraint Induced Movement Therapy, one can visit Strokengine.ca. 

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