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Peri E, Ambrosini E, Colombo VM, van de Ruit M, Grey MJ, Monticone M, Ferriero G, Pedrocchi A, Ferrigno G, Ferrante S. Intra and inter-session reliability of rapid Transcranial Magnetic Stimulation stimulus-response curves of tibialis anterior muscle in healthy older adults. PLoS One 2017; 12:e0184828. [PMID: 28910370 PMCID: PMC5599029 DOI: 10.1371/journal.pone.0184828] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Accepted: 08/31/2017] [Indexed: 12/25/2022] Open
Abstract
OBJECTIVE The clinical use of Transcranial Magnetic Stimulation (TMS) as a technique to assess corticospinal excitability is limited by the time for data acquisition and the measurement variability. This study aimed at evaluating the reliability of Stimulus-Response (SR) curves acquired with a recently proposed rapid protocol on tibialis anterior muscle of healthy older adults. METHODS Twenty-four neurologically-intact adults (age:55-75 years) were recruited for this test-retest study. During each session, six SR curves, 3 at rest and 3 during isometric muscle contractions at 5% of maximum voluntary contraction (MVC), were acquired. Motor Evoked Potentials (MEPs) were normalized to the maximum peripherally evoked response; the coil position and orientation were monitored with an optical tracking system. Intra- and inter-session reliability of motor threshold (MT), area under the curve (AURC), MEPmax, stimulation intensity at which the MEP is mid-way between MEPmax and MEPmin (I50), slope in I50, MEP latency, and silent period (SP) were assessed in terms of Standard Error of Measurement (SEM), relative SEM, Minimum Detectable Change (MDC), and Intraclass Correlation Coefficient (ICC). RESULTS The relative SEM was ≤10% for MT, I50, latency and SP both at rest and 5%MVC, while it ranged between 11% and 37% for AURC, MEPmax, and slope. MDC values were overall quite large; e.g., MT required a change of 12%MSO at rest and 10%MSO at 5%MVC to be considered a real change. Inter-sessions ICC were >0.6 for all measures but slope at rest and MEPmax and latency at 5%MVC. CONCLUSIONS Measures derived from SR curves acquired in <4 minutes are affected by similar measurement errors to those found with long-lasting protocols, suggesting that the rapid method is at least as reliable as the traditional methods. As specifically designed to include older adults, this study provides normative data for future studies involving older neurological patients (e.g. stroke survivors).
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Affiliation(s)
- Elisabetta Peri
- NearLab, Department of Electronics, Information and Bioengineering, Politecnico di Milano, Milano, Italy
- * E-mail:
| | - Emilia Ambrosini
- NearLab, Department of Electronics, Information and Bioengineering, Politecnico di Milano, Milano, Italy
- Department of Physical and Rehabilitative Medicine, Scientific Institute of Lissone IRCCS, Istituti Clinici Scientifici Maugeri, Lissone, MB, Italy
| | - Vera Maria Colombo
- NearLab, Department of Electronics, Information and Bioengineering, Politecnico di Milano, Milano, Italy
| | - Mark van de Ruit
- Department of Biomechanical Engineering Faculty of Mechanical, Maritime and Materials Engineering, Delft University of Technology, Delft, The Netherlands
| | - Michael J. Grey
- Acquired Brain Injury Rehabilitation Alliance, School of Health Sciences, University of East Anglia, Norwich, United Kingdom
| | - Marco Monticone
- Department of Physical and Rehabilitative Medicine, Scientific Institute of Lissone IRCCS, Istituti Clinici Scientifici Maugeri, Lissone, MB, Italy
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - Giorgio Ferriero
- Department of Physical and Rehabilitative Medicine, Scientific Institute of Lissone IRCCS, Istituti Clinici Scientifici Maugeri, Lissone, MB, Italy
| | - Alessandra Pedrocchi
- NearLab, Department of Electronics, Information and Bioengineering, Politecnico di Milano, Milano, Italy
| | - Giancarlo Ferrigno
- NearLab, Department of Electronics, Information and Bioengineering, Politecnico di Milano, Milano, Italy
| | - Simona Ferrante
- NearLab, Department of Electronics, Information and Bioengineering, Politecnico di Milano, Milano, Italy
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Collett J, Meaney A, Howells K, Dawes H. Acute recovery from exercise in people with multiple sclerosis: an exploratory study on the effect of exercise intensities. Disabil Rehabil 2016; 39:551-558. [DOI: 10.3109/09638288.2016.1152604] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Johnny Collett
- Movement Science Group, Oxford Brookes University, Oxford, UK
| | - Andy Meaney
- Movement Science Group, Oxford Brookes University, Oxford, UK
| | - Ken Howells
- Movement Science Group, Oxford Brookes University, Oxford, UK
| | - Helen Dawes
- Movement Science Group, Oxford Brookes University, Oxford, UK
- Department of Clinical Neurology, University of Oxford, Oxford, UK
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