Condition category
Musculoskeletal Diseases
Date applied
04/02/2015
Date assigned
11/02/2015
Last edited
11/02/2015
Prospective/Retrospective
Retrospectively registered
Overall trial status
Completed
Recruitment status
No longer recruiting

Plain English Summary

Background and study aims:
During complex resistance movements such as bench press, large amounts of muscle mass are activated, and multiple muscles are coordinated to achieve the desired movement. The aim of the current study is to evaluate if changes occur in the muscular coordination, following an increase in strength.

Who can participate?
Healthy men at the age of 18-40 with no previous surgery in the shoulder or elbow joint can participate.

What does the study involve?
Participants will be randomly allocated to one of two groups: a training group and a control group (no training). Subjects in the training group perform upper-body strength training for 5 weeks, 3 times a week. Each training session will last approximately 60 minutes and take place at the Center for Sensory-Motor Interaction, Aalborg (Denmark). Both groups will be tested in two sessions: before the start of training and after completion of the training (approx. 3 hours per session). The maximum strength in bench press will be measured and surface electromyograhy (EMG) will be recorded during 3 sets of 8 repetitions at submaximal intensity.

What are the possible benefits and risks of participating?
After completion of the training program, subjects are expected to have gained upper-body strength.
No risks or side effects are known to be associated with the methods used in the present study.

Where is the study run from?
Center for Sensory-Motor Interaction, Aalborg (Denmark).

When is study starting and how long is it expected to run for?
The project will run from September 2014 to March 2014.

How long will the trial be recruiting participants for?
Aalborg University (Denmark)

Who is the main contact?
PhD student Mathias Kristiansen
mvk@hst.aau.dk

Trial website

Contact information

Type

Scientific

Primary contact

MSc Mathias Kristiansen

ORCID ID

Contact details

Fredrik Bajersvej 7E
Aalborg
9220
Denmark
+4526803461
mvk@hst.aau.dk

Additional identifiers

EudraCT number

ClinicalTrials.gov number

Protocol/serial number

N/A

Study information

Scientific title

Changes in muscle coordination after 5 weeks of bench press training in previously untrained participants: A randomised controlled trial

Acronym

Study hypothesis

Following 5 weeks of intensive upper-body strength straining the training group will display:
1. Increased strength in bench press
2. Changes in muscle coordination as measured by the extracted muscle synergies

Ethics approval

The North Denmark Region Committee on Health Research Ethics, Denmark, July 2012, ref: N-20120036

Study design

Randomised controlled trial

Primary study design

Interventional

Secondary study design

Randomised controlled trial

Trial setting

Other

Trial type

Other

Patient information sheet

Condition

Inter-muscular coordination

Intervention

Subjects randomized to the training group will perform upper-body strength training 3 times per week for 5 weeks.
Subjects randomized to the control group will not perform any training.

Intervention type

Other

Phase

Drug names

Primary outcome measures

Upper-body strength, measured as 1RM in bench press. Will be assessed pre and post the 5 week intervention.
Muscle coordination, measured by extracting muscle synergies from surface electromyography (EMG). Will be assessed pre and post the 5 week intervention.

Secondary outcome measures

Compliance. Will be measured at each training session.

Overall trial start date

30/07/2014

Overall trial end date

20/12/2014

Reason abandoned

Eligibility

Participant inclusion criteria

1. Males
2. Age 18-40

Participant type

Healthy volunteer

Age group

Adult

Gender

Male

Target number of participants

32

Participant exclusion criteria

1. No previous surgery in shoulder or elbow joint
2. Regular strength training within 24 months before the study
3. Consumption of alcohol or pain-relieving drugs 24h prior to the experiment
4. Hypertension (>160/>100 mmHg) and heart diseases
5. Addictive or previous addictive behavior defined as the abuse of cannabis, opioids or other drugs
7. Previous neurological or mental disorders
8. Inability to cooperate

Recruitment start date

30/09/2014

Recruitment end date

30/10/2014

Locations

Countries of recruitment

Denmark

Trial participating centre

Aalborg University
Denmark

Sponsor information

Organisation

Aalborg University

Sponsor details

Fredrik Bajersvej 7D
Aalborg
9220
Denmark

Sponsor type

University/education

Website

Funders

Funder type

University/education

Funder name

Aalborg University

Alternative name(s)

Funding Body Type

Funding Body Subtype

Location

Results and Publications

Publication and dissemination plan

We are intending to publish a conference abstract at the European Conference on Sports Science June, 2015 in Malmø, Sweden.
And an original research paper to the Scandinavian journal of Medicine and Science in Sports.

Intention to publish date

31/12/2015

Participant level data

Not expected to be available

Results - basic reporting

Publication summary

Publication citations

Additional files

Editorial Notes