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作者
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Chuang, L-L., Lin, K-C., Wu,
C-Y.*, Chang, C-W., Chen, H-C., Yin, H-P., Wang, L.
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關鍵字
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Activities of Daily Living, Motor
Function, Rehabilitation, Stroke, Upper Extremity
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摘要
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Objective: To investigate the relative and absolutereliabilities
of the myotonometer.
Design: Psychometric study.
Setting: Three medical centers.
Participants: Sixty-one stroke patients.
Interventions: Not applicable.
Main Outcome Measures: Muscle tone, elasticity, and stiffness of relaxed
affected deltoid, triceps brachii, biceps brachii, extensor digitorum,
flexor carpi radialis,
and flexor carpi ulnaris
were measured twice, 30 minutes apart, using the myotonometer.
Intraclass correlation coefficient (ICC), a
relative reliability index, was calculated for three muscular properties and
for each muscle to examine the degree of consistency and agreement between
two test sessions. Absolute reliability indices, including the standard error
of measurement (SEM), smallest real difference (SRD), and Bland-Altman limits
of agreement (LOA), were used to quantify measurement errors and check
systematic biases of two test sessions.
Results: The ICCs were 0.83-0.95 for muscle tone, elasticity, and stiffness
of all muscle groups. The SEM and SRD of muscle tone, elasticity, and
stiffness of the biceps were the smallest among the six muscles tested. The
Bland-Altman analyses showed no systematic bias between most of the repeated
measurements. Compared with other muscles, biceps had narrower LOA ranges,
indicating that the myotonometric measurements of
the biceps had higher stability and less variation overtime.
Conclusions: The Myoton-3 myometer reliably
measures muscular properties, with good relative and absolute reliabilities.
These findings are useful for clinicians and researchers to assess muscle
properties reliably and determine whether a real change has occurred in
groups and on individual levels of stroke patients.
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