NCT04869241

Brief Summary

To investigate change of shoulder muscles by measuring muscle activity according to the position of the backpack.

Trial Health

30
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Timeline
Completed

Started May 2021

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
withdrawn

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

April 8, 2021

Completed
25 days until next milestone

First Posted

Study publicly available on registry

May 3, 2021

Completed
Same day until next milestone

Study Start

First participant enrolled

May 3, 2021

Completed
25 days until next milestone

Primary Completion

Last participant's last visit for primary outcome

May 28, 2021

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

May 28, 2021

Completed
Last Updated

June 1, 2021

Status Verified

May 1, 2021

Enrollment Period

25 days

First QC Date

April 8, 2021

Last Update Submit

May 28, 2021

Conditions

Keywords

backpackshoulder muscle activationsurface emgdeltoid, serratus anterior, trapezius

Outcome Measures

Primary Outcomes (1)

  • Root mean square of each muscle activation

    Quantification of muscle activity

    through study completion, an average of 1 year

Study Arms (1)

Experimental group

EXPERIMENTAL

Group measuring shoulder muscle activities by surface EMG with carrying backpacks forward

Diagnostic Test: surface EMG

Interventions

surface EMGDIAGNOSTIC_TEST

Carrying backpacks forward or backward

Experimental group

Eligibility Criteria

Age20 Years - 59 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • Healthy adults from 20s to 50s

You may not qualify if:

  • Restriction of joint motion range of shoulder and elbow
  • Hisory of upper limb surgery in the past 6 months
  • If there is an external wire such as a temporary external pacemaker or central line guide wire

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Bundang CHA Medical Center

Seongnam-si, Gyeonggi-do, South Korea

Location

MeSH Terms

Interventions

Electromyography

Intervention Hierarchy (Ancestors)

ElectrodiagnosisDiagnostic Techniques and ProceduresDiagnosisMyography

Study Officials

  • Kyunghoon Min, MD, PhD

    Department of Rehabilitation Medicine, CHA Bundang Medical Center, CHA University School of Medicine

    STUDY DIRECTOR
0

Study Design

Study Type
interventional
Phase
not applicable
Allocation
NA
Masking
NONE
Purpose
DIAGNOSTIC
Intervention Model
SINGLE GROUP
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Director

Study Record Dates

First Submitted

April 8, 2021

First Posted

May 3, 2021

Study Start

May 3, 2021

Primary Completion

May 28, 2021

Study Completion

May 28, 2021

Last Updated

June 1, 2021

Record last verified: 2021-05

Data Sharing

IPD Sharing
Will share

Locations