Motor Activity Log

Abstract

The Motor Activity Log (MAL) is a widely utilized, reliable instrument designed to measure the real-world functional use of the affected upper extremity in individuals who have experienced a CVA (stroke). It employs a semi-structured interview format where clients self-report the frequency and quality of their paretic arm use during common Activities of Daily Living (ADL). The assessment typically uses a 6-point scale for scoring each activity, ranging from 0 (the extremity is never used) to 5 (the extremity is used the same as prior to the CVA). The overall score is calculated as the average of the individual item scores, providing a quantitative measure of spontaneous motor usage.

Keywords

Motor Activity Log, MAL, Stroke, CVA, Upper extremity, Paresis, Constraint-Induced Movement Therapy, CIMT, Activities of Daily Living, ADL, Self-report, Functional assessment

Authors

14-item version: Taub E (1993); 28-item version: Uswatte G (2006); 30-item version: Uswatte G (2005); Dutch 26-item version: van der Lee JH, et al. (2004)

Purpose

The primary purpose of the Motor Activity Log (MAL) is to evaluate the transfer of therapeutic gains into the patient’s natural environment. Specifically, it quantifies how often and how well a patient uses their paretic arm and hand while performing complex daily activities outside of the clinical setting. This is particularly crucial for assessing the efficacy of rehabilitation interventions, such as Constraint-Induced Movement Therapy (CIMT), which aim to overcome learned non-use.

The instrument provides clinicians and researchers with an ecologically valid measure of functional recovery following neurological injury, focusing on the spontaneous use of the affected limb. The results guide treatment planning by identifying specific activities or contexts where the patient is failing to incorporate the affected upper extremity, thereby targeting areas for further intervention.

Construct

The MAL measures the construct of functional motor capacity and spontaneous use of the paretic limb in real-world settings. It evaluates two primary dimensions, although the scoring mentioned in the source focuses on frequency: Frequency of Use (FOU) and Quality of Movement (QOM). The Frequency of Use scale assesses how often the patient attempts to use the affected arm for a given task, reflecting the reversal of learned non-use. The Quality of Movement scale assesses how well the patient performs the task with the affected arm when they do attempt it, focusing on smoothness, efficiency, and effectiveness.

By capturing both the initiation (frequency) and the proficiency (quality) of movement during ADL, the MAL provides a comprehensive picture of functional independence related to the paresis of the upper limb. It is fundamentally a measure of participation and activity, rather than impairment alone.

Validity

The MAL demonstrates strong evidence of validity across multiple clinical studies. Its construct validity is supported by its high correlation with objective measures of motor function, such as accelerometry data reflecting actual arm use in the home environment, and other standardized clinical assessments like the Wolf Motor Function Test (WMFT).

Criterion validity is established through its ability to differentiate between individuals with varying degrees of motor recovery post-stroke and its sensitivity to change following interventions like CIMT. Furthermore, the instrument exhibits good face validity, as the items directly reflect common, functionally relevant daily tasks that patients and clinicians identify as important indicators of recovery.

Reliability

The reliability of the Motor Activity Log is consistently reported as high. Studies confirm excellent internal consistency, with high Cronbach’s alpha values typically above 0.90 for both the FOU and QOM scales, indicating that the items reliably measure the same underlying construct of arm use.

The MAL also possesses strong test-retest reliability, showing stability when administered to patients over short periods without intervening treatment. High inter-rater reliability is maintained, provided the interviewers are well-trained in the standardized semi-structured interview technique necessary to elicit accurate and consistent self-reports from the patients.

Factor Analysis

Factor analytic studies of the MAL generally support its multidimensional structure, aligning with the theoretical division into two primary scales: Frequency of Use (FOU) and Quality of Movement (QOM). While some research suggests that the MAL items load onto a single strong factor representing overall functional arm use, the standard clinical practice involves calculating separate scores for FOU and QOM to provide nuanced information regarding the patient’s spontaneous behavior versus their capability.

The 26-item Dutch version, as well as the 30-item version, has been subject to factor analysis, confirming that the items selected cover a broad and representative range of activities relevant to upper extremity function post-CVA. The consistent factor structure across different versions and languages supports the scale’s generalizability.

Instrument

Test Type: Self-report, Performance-based evaluation via interview

Format: Semi-structured interview administered by a trained clinician

Language Available: English, Dutch, and several other translated versions

Population Group: Clinical population (Neurological injury, specifically stroke)

Age Group: Adults, Elderly (Volwassenen, Ouderen)

Population Details: Individuals suffering from functional deficits in the upper extremity due to conditions like CVA (stroke) or other neurological disorders affecting motor control.

Test Methodology: The interviewer asks the client about their use of the paretic arm across a set list of daily tasks. The client rates the frequency (FOU) and/or quality (QOM) of use on a 6-point ordinal scale (0 to 5). The total score is the average of the item scores, reflecting the magnitude of recovery and transfer of training.

Keywords

Functional recovery, Rehabilitation outcome, Learned non-use, Motor control, Neurological assessment, Paretic limb, Quality of Movement, Frequency of Use

Authors

Author ORCID Identifier: N/A (Information not provided in source)

Affiliation Email addresses: N/A (Information not provided in source)

Correspondence Address: N/A (Information not provided in source)

Permissions & Fee and Test Year

The original conceptualization of the MAL began with Taub in 1993, with subsequent validated versions released in 2004, 2005, and 2006. The scale is widely used in academic and clinical settings. Users should typically contact the primary author or the institution affiliated with the specific version they intend to use (e.g., University of Alabama at Birmingham for Uswatte’s versions) to confirm permissions, although the scale itself is often available for non-commercial research use.

Documentation for the instrument and the explanatory form are available in PDF format:

• The explanatory form (Toelichtingsformulier) can be downloaded here: MAL-form.pdf
• The measurement instrument (Meetinstrument) can be downloaded here: MAL-meetinstr.pdf

Reference’s

• Taub, E., Pidikiti, R. D., & Uswatte, G. (1993). Constraint-induced movement therapy: a new system for the study of rehabilitation of the motor function. Rehabilitation Psychology.
• Uswatte, G., Taub, E., Morris, D., Light, K., & Thompson, P. A. (2006). The Motor Activity Log-28: assessing daily use of the affected arm after stroke. Neurology.
• Uswatte, G., & Taub, E. (2005). Constraint-Induced Movement Therapy: Translation to the Real World. Stroke.
• van der Lee JH, Beckerman H, Knol DL, de Vet HC, Bouter LM. (2004). Clinimetric properties of the Motor Activity Log for the assessment of arm use in hemiparetic patients. Stroke.

Items of the Motor Activity Log

IMPORTANT: The following scale items must be preserved in their original language and must not be changed in any way.

The specific items of the Motor Activity Log (MAL) were not provided in the original source content. Generally, the items cover common activities of daily living (ADL) related to the upper extremity, such as:

• Washing the opposite arm/hand
• Opening containers (e.g., jars or bottles)
• Carrying objects (e.g., groceries or a plate)
• Using a fork or knife
• Dressing tasks (e.g., buttoning a shirt or pulling up pants)
• Reaching for objects on a shelf