Clinical trial NCT05400772: Does Core Activation on an Unstable Surface Affect Periscapular Muscle Activation?
Official title: Does Core Activation on an Unstable Surface Affect Periscapular Muscle Activation?
Study type: OBSERVATIONAL
Overall status: UNKNOWN
Conditions: Healthy
Keywords: electromyography
muscle activation
exercise
scapula
Lead sponsor: Hacettepe University
Sponsor class: OTHER
First posted: 2022-06-02
Enrollment: 30
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Observational model: OTHER
Time perspective: PROSPECTIVE
Sampling method: NON_PROBABILITY_SAMPLE
Study population: Young healthy individuals over the age of 18

Brief summary: 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.

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.

Eligibility criteria: 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

Primary outcomes:
measure: Surface electromyographic measurement
timeFrame: 60 minutes
Secondary outcomes:
Other outcomes:
Locations:
Study officials:
affiliation: İzmir Bakırçay University
name: Tuba KAYA BENLİ
role: PRINCIPAL_INVESTIGATOR
affiliation: İzmir Bakırçay University
name: Yeşim BAKAR, Prof.
role: STUDY_DIRECTOR
affiliation: İzmir Bakırçay University
name: Nuriye BÜYÜKTAŞ
role: STUDY_CHAIR
affiliation: İzmir Bakırçay University
name: Hüseyin MAHİROĞLU
role: STUDY_CHAIR
References:
citation: 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.
citation: 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.
citation: 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). 2021 Apr;84:105349. doi: 10.1016/j.clinbiomech.2021.105349. Epub 2021 Apr 2.
citation: 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.