SEMG: Age-related Changes of Shoulder Muscles

Sponsor

University of Alcala (Other)

Overall Status

Completed

CT.gov ID

NCT02974452

Collaborator

(none)

Enrollment

Duration (Months)

Study Details

Study Description

Brief Summary

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.

Condition or Disease	Intervention/Treatment	Phase
Electromyography

Detailed Description

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.

Study Design

Study Type:

Observational

Actual Enrollment :

60 participants

Observational Model:

Ecologic or Community

Time Perspective:

Cross-Sectional

Official Title:

Age-related Changes in Activation Patterns of Shoulder Muscles

Study Start Date :

Jan 1, 2014

Actual Primary Completion Date :

Mar 1, 2015

Actual Study Completion Date :

Jan 1, 2016

Arms and Interventions

Arm	Intervention/Treatment
Group I: Older adults healthy subjects older than 68 years old whose shoulder muscle are measured by surface electromyography
Group II: Adults healthy subjects 43 to 67 years old, whose shoulder muscle are measured by surface electromyography
Group III: Young adults healthy subjects 20 to 42 years old, whose shoulder muscle are measured by surface electromyography

Outcome Measures

Primary Outcome Measures

The mean Root Mean Square (RMS) value [30 minutes]
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
onset latency [30 minutes]
Start of contraction on the basis of 15% of RMS

Secondary Outcome Measures

maximal isometric voluntary contraction [5 minutes]
Using hand-held dynamometer
body mass index [5 minutes]

Eligibility Criteria

Criteria

Ages Eligible for Study:

20 Years to 90 Years

Sexes Eligible for Study:

All

Accepts Healthy Volunteers:

Yes

Inclusion Criteria:

Healthy subjects with no previously manifested symptoms in the shoulder joint and/or the neck during the past year,

Exclusion Criteria:

moderate or severe cognitive impairment, rheumatologic diseases, massive osteoarthritis, tumors, shoulder joint instability, circulatory disorders (hemophilia clotting problems) and dermatological problems exacerbated by contact with skin

Contacts and Locations

Locations

No locations specified.

Sponsors and Collaborators

University of Alcala

Investigators

Study Director: Maria Tommes Lacomba, PhD, University of Alcalá

Study Documents (Full-Text)

None provided.

More Information

Publications

None provided.

Responsible Party:

Cristina Lirio Romero, Physiotherapist, University of Alcala

ClinicalTrials.gov Identifier:

NCT02974452

Other Study ID Numbers:

UAlcalaH

First Posted:

Nov 28, 2016

Last Update Posted:

Nov 28, 2016

Last Verified:

Nov 1, 2016

Individual Participant Data (IPD) Sharing Statement:

Plan to Share IPD:

Study Results

No Results Posted as of Nov 28, 2016