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Completed

NCT Number: NCT02974452

Age-related Changes of Shoulder Muscles

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.

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Key information

Conditions

Electromyography

Age range

20 year–90 year

Sex eligibility

All sexes

Study type

Observational

About this study

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.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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

Treatment and study plan

Primary outcomes

  1. The mean Root Mean Square (RMS) value

    Time frame: 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

  2. onset latency

    Time frame: 30 minutes

    Start of contraction on the basis of 15% of RMS

Secondary outcomes

  1. maximal isometric voluntary contraction

    Time frame: 5 minutes

    Using hand-held dynamometer

  2. body mass index

    Time frame: 5 minutes

Sponsors and collaborators

Lead sponsor

University of Alcala

Other

Registry information

Official study title

Age-related Changes in Activation Patterns of Shoulder Muscles

Acronym: SEMG

Important dates

Study start
2014
Primary completion
2015
Study completion
2016
First posted
Nov 28, 2016
Registry last updated
Nov 28, 2016

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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