An observational study in Electromyography, sponsored by University of Alcala. Completed. Open to participants aged 20 Years to 90 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2016-11-28.
Sponsored by University of Alcala · Observational
A cross-sectional descriptive study, in which the surface electromyographic activity of five shoulder muscles was compared in three populations: older adults, middle-aged adults and young adults. The evaluation of the electromyographic data offers a suitable foundation to understand aging process.
This supports that surface electromyography provide information about the aged shoulder muscles. Loss of functionality is suffered by a high percentage of older adults, which greatly limits their physical activity. In this sense, this paper presents findings that might be related with possible therapeutic approaches in subsequent studies.
The purpose of the present work was to assess neuromotor abnormalities in aging shoulder. Twenty young adults (20-42), 20 middle-aged adults (43-67) and 20older adults (>68) were recruited. A comparative electromyography (EMG) study was performed on the upper and lower trapezius, middle deltoid, infraspinatus and serratus anterior. The EMG measurement (root mean square (RMS)) and onset time of isometric contractions were analyzed. Body mass index and strength were also tested.
University of Alcala is the lead sponsor of 123 studies on the registry; 36 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Participants came from Madrid and Castilla La Mancha (Spain) and voluntarily attended the Unit of the Research Group "Physical Therapy in Women´s Health Processes" in the Department of Physical Therapy, University of Alcalá, and the Ocaña Senior Center.
Exclusion Criteria:
healthy subjects older than 68 years old whose shoulder muscle are measured by surface electromyography
healthy subjects 43 to 67 years old, whose shoulder muscle are measured by surface electromyography
healthy subjects 20 to 42 years old, whose shoulder muscle are measured by surface electromyography
The mean Root Mean Square (RMS) value
The electromyographic data were captured simultaneously on a PC by using the LabChart® software. Within the time interval from 2 to 4 seconds after contraction initiation a power spectrum analysis was performed together with the determination of RMS values. The mean RMS values were automatically obtained from the software
Time frame: 30 minutes
onset latency
Start of contraction on the basis of 15% of RMS
Time frame: 30 minutes
maximal isometric voluntary contraction
Using hand-held dynamometer
Time frame: 5 minutes
body mass index
Time frame: 5 minutes
No study locations are listed for this record.
Plan to share: No
This study is completed, as verified in Nov 2016. You cannot join it, but the record below documents what was studied.
Get an email when the registry record changes — status, dates, results — or when someone posts here.
Sign in to followQuestions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.
Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.
Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.
University of Alcala