Does Core Activation on an Unstable Surface Affect Periscapular Muscle Activation?

The core muscles contain various muscle groups that stabilize the shoulders, pelvis, and spine, and they play an important role as pivot points in extremity movements. It is known that core muscles stabilize the lumbar region and core stabilization affects muscle activation. İn addition conscious abdominal muscle activation during exercise performance is believed to promote greater scapular muscle activation through existing myofascial connections. Studies support the relationship between the scapular region and the core region.

Another aspect of rehabilitation is the use of unstable surfaces with exercise, since it is possible to increase neuromuscular demand without placing further overload on the musculoskeletal system.

Hypothesis originating from the investigation:

H1: Exercises performed with core activation on stable surfaces activate the muscles around the scapula more than exercises performed without core activation.

H2: Exercises performed with core activation on unstable surfaces activate the muscles around the scapula more than exercises performed without core activation.

H3: Exercises performed with core activation on unstable surfaces activate muscle activation around the scapula more than exercises performed on stable surfaces.

H4: Exercises performed without core activation on unstable surfaces activate muscle activation around the scapula more than exercises performed on stable surfaces.

Study Overview

• Status: Not yet recruiting
• Conditions: Healthy
• Intervention / Treatment: Other: electromyographic device

Detailed Description

Muscle activation of upper trapezius, middle trapezius, lower trapezius ve serratus anterior will be measured by superficial electromyographic measurement. Muscle activation according to SENIAM for each muscle will be evaluated.

Muscle activations will be measured during 4 different scapula exercises based on the literature. These exercises are: Inferior glide, External rotation in sitting, External rotation with standing elevation, Wall slide.

The specified scapula exercises will be performed on stable and unstable surfaces while the core region muscles are active and inactive. During the exercises, superficial EMG measurements of muscles will be recorded bilaterally.

All measurements will be made in 3 repetitions.

• Study Type: Observational
• Enrollment (Anticipated): 30

Contacts and Locations

• Study Contact: Name: Tuba KAYA BENLİ; Phone Number: 05386891682; Email: tbky1995@gmail.com
• Study Contact Backup: Name: Yeşim BAKAR, Prof.

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (ADULT, OLDER_ADULT)
• Accepts Healthy Volunteers: Yes
• Genders Eligible for Study: All

• Sampling Method: Non-Probability Sample

Study Population

Young healthy individuals over the age of 18

Description

Inclusion Criteria:

• Young individuals aged 18 and over
• Body mass index <30kg/m2

Exclusion Criteria:

• Individuals with previous trauma, neurological or musculoskeletal disorders in the shoulder girdle, upper extremity, spine, or pelvic girdle
• Individuals with a limited or painful range of motion in the shoulder girdle, upper extremity, spine, or pelvic girdle

Study Plan

How is the study designed?

Number of groups / cohorts

1

Cohorts and Interventions

Group / Cohort	Intervention / Treatment
Healthy subjects	Other: electromyographic device; An 8-channel surface EMG system (Noraxon Telemyo DTS system, Scottsdale, USA) will be used to measure signals from muscles during surface electromyography measurements.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Surface electromyographic measurement	Muscle activation measurement	60 minutes

Collaborators and Investigators

• Sponsor: Hacettepe University
• Investigators: Principal Investigator: Tuba KAYA BENLİ, İzmir Bakırçay University; Study Director: Yeşim BAKAR, Prof., İzmir Bakırçay University; Study Chair: Nuriye BÜYÜKTAŞ, İzmir Bakırçay University; Study Chair: Hüseyin MAHİROĞLU, İzmir Bakırçay University

Publications and helpful links

General Publications

• Barati A, Safarcherati A, Aghayari A, Azizi F, Abbasi H. Evaluation of Relationship between Trunk Muscle Endurance and Static Balance in Male Students. Asian J Sports Med. 2013 Dec;4(4):289-94. doi: 10.5812/asjsm.34250. Epub 2013 Nov 15.
• Vega Toro AS, Cools AM, de Oliveira AS. Instruction and feedback for conscious contraction of the abdominal muscles increases the scapular muscles activation during shoulder exercises. Man Ther. 2016 Sep;25:11-8. doi: 10.1016/j.math.2016.05.331. Epub 2016 Jun 1.
• de Oliveira Scatolin R, Hotta GH, Cools AM, Custodio GAP, de Oliveira AS. Effect of conscious abdominal contraction on the activation of periscapular muscles in individuals with subacromial pain syndrome. Clin Biomech (Bristol, Avon). 2021 Apr;84:105349. doi: 10.1016/j.clinbiomech.2021.105349. Epub 2021 Apr 2.
• de Araujo RC, Nascimento VYS, Torres RJB, Trombini-Souza F, Behm D, Pitangui ACR. Can the Use of Unstable Surfaces and Instruction for Conscious Abdominal Contraction Increase the EMG Activity of the Periscapular Muscles During the Dynamic Push-Up? J Sport Rehabil. 2020 Feb 1;29(2):225-230. doi: 10.1123/jsr.2018-0165.

Study record dates

Study Major Dates

• Study Start (ANTICIPATED): July 1, 2022
• Primary Completion (ANTICIPATED): July 1, 2022
• Study Completion (ANTICIPATED): September 1, 2022

Study Registration Dates

• First Submitted: May 27, 2022
• First Submitted That Met QC Criteria: May 27, 2022
• First Posted (ACTUAL): June 2, 2022

Study Record Updates

• Last Update Posted (ACTUAL): June 2, 2022
• Last Update Submitted That Met QC Criteria: May 27, 2022
• Last Verified: March 1, 2022

More Information

Terms related to this study

• Keywords: exercise; electromyography; muscle activation; scapula
• Other Study ID Numbers: BAKİRCAYU

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No