| Author/Editor | Perucca, Laura; Caronni, Antonio; Vidmar, Gaj; Tesio, Luigi | |
| Title | Electromyographic latency of postural evoked responses from the leg muscles during EquiTest Computerised Dynamic Posturography | |
| Type | članek | |
| Vol. and No. | Letnik 24, št. 1 | |
| Publication year | 2014 | |
| Volume | str. 126-133 | |
| ISSN | 1050-6411 - Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology | |
| Language | eng | |
| Abstract | No normative data are available for the latencies of the EMG signals from the ankle muscles in responseto sudden sagittal tilt (toes-UP or toes-DOWN) or shift (shift-FOR or shift-BACK) of the support surfaceduring standing. In this study the postural evoked response (PER) paradigm on the EquiTest force platformwas applied to 31 healthy adults (18 women and 13 men; mean age 29 years). The EMG latencies(PEREMG) were computed both through the standard manual procedure and through a specially designedautomated algorithm. The manually computed PEREMG onset yielded a 95% tolerance interval between82 ms and 148 ms after toes-UP perturbation, between 93 ms and 182 ms after toes-DOWN perturbation,between 67 ms and 107 ms after shift-BACK perturbation, and between 73 ms and 113 ms after shift-FORperturbation. When comparing the two methods, paired t-tests showed no significant mean difference(Bonferroni-adjusted p-values ranged from 0.440 to 1.000) and all BlandAltman plots included zero differencewithin the limits of agreement. Therefore, the manual and the automated methods appear to besufficiently consistent. These results foster the clinical application of PEREMG testing on the EquiTestplatform. | |
| Descriptors | Posture Electromyography Humans | |
| Keywords | postural evoked responses EquiTest normative data |