Changes in muscle coordination following upper-body strength training

ISRCTN ISRCTN10375612
DOI https://doi.org/10.1186/ISRCTN10375612
Secondary identifying numbers N/A
Submission date
04/02/2015
Registration date
11/02/2015
Last edited
18/02/2022
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Musculoskeletal Diseases
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data

Plain English summary of protocol

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

Contact information

Dr Mathias Kristiansen
Scientific

Fredrik Bajersvej 7E
Aalborg
9220
Denmark

Phone +4526803461
Email mvk@hst.aau.dk

Study information

Study designRandomised controlled trial
Primary study designInterventional
Secondary study designRandomised controlled trial
Study setting(s)Other
Study typeOther
Scientific titleChanges in muscle coordination after 5 weeks of bench press training in previously untrained participants: A randomised controlled trial
Study objectivesFollowing 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(s)The North Denmark Region Committee on Health Research Ethics, Denmark, July 2012, ref: N-20120036
Health condition(s) or problem(s) studiedInter-muscular coordination
InterventionSubjects 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 typeOther
Primary outcome measureUpper-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 measuresCompliance. Will be measured at each training session.
Overall study start date30/07/2014
Completion date20/12/2014

Eligibility

Participant type(s)Healthy volunteer
Age groupAdult
Lower age limit18 Years
Upper age limit40 Years
SexMale
Target number of participants32
Key inclusion criteria1. Males
2. Age 18-40
Key exclusion criteria1. 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
Date of first enrolment30/09/2014
Date of final enrolment30/10/2014

Locations

Countries of recruitment

  • Denmark

Study participating centre

Aalborg University
-
Denmark

Sponsor information

Aalborg University
University/education

Fredrik Bajersvej 7D
Aalborg
9220
Denmark

ROR logo "ROR" https://ror.org/04m5j1k67

Funders

Funder type

University/education

Aalborg University

No information available

Results and Publications

Intention to publish date31/12/2015
Individual participant data (IPD) Intention to shareNo
IPD sharing plan summaryNot expected to be made available
Publication and dissemination planWe 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.
IPD sharing planNot provided at time of registration

Study outputs

Output type Details Date created Date added Peer reviewed? Patient-facing?
Results article 01/07/2016 18/02/2022 Yes No

Editorial Notes

18/02/2022: Publication reference added.