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Between‐day reliability of the trapezius muscle H‐reflex and M‐wave
Author(s) -
Vangsgaard Steffen,
Hansen Ernst a.,
Madeleine Pascal
Publication year - 2015
Publication title -
muscle and nerve
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.025
H-Index - 145
eISSN - 1097-4598
pISSN - 0148-639X
DOI - 10.1002/mus.24645
Subject(s) - intraclass correlation , trapezius muscle , medicine , stimulation , reliability (semiconductor) , reflex , h reflex , standard error , anatomy , electromyography , physical medicine and rehabilitation , physical therapy , anesthesia , audiology , mathematics , psychometrics , physics , statistics , clinical psychology , power (physics) , quantum mechanics
: The aim of this study was to investigate the between‐day reliability of the trapezius muscle H‐reflex and M‐wave. Methods : Sixteen healthy subjects were studied on 2 consecutive days. Trapezius muscle H‐reflexes were evoked by electrical stimulation of the C3/4 cervical nerves; M‐waves were evoked by electrical stimulation of the accessory nerve. Relative reliability was estimated by intraclass correlation coefficients (ICC 2,1 ). Absolute reliability was estimated by computing the standard error of measurement (SEM) and the smallest real difference (SRD). Bland–Altman plots were constructed to detect any systematic bias. Results : Variables showed substantial to excellent relative reliability (ICC = 0.70–0.99). The relative SEM ranged from 1.4% to 34.8%; relative SRD ranged from 3.8% to 96.5%. No systematic bias was present in the data. Conclusions : The amplitude and latency of the trapezius muscle H‐reflex and M‐wave in healthy young subjects can be measured reliably across days. Muscle Nerve 52 : 1066–1071, 2015