Comparison Between Functional and Analytic Methods to Strengthen Shoulder Rotators and Scapular Muscles

Strength Clinical Trial

Official title:

Functional or Analytic Methods: What is the Best to Strengthen Shoulder and Scapular Muscles?

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT05146128
• Other study ID #: Functional or analytic
• Status: Completed
• Phase: N/A
• Start date: September 20, 2021
• Est. completion date: January 15, 2022

Study information

• Verified date: May 2022
• Source: University of Liege
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The objective of the study was to compare analytic, functional and mixed (analytic/functional) methods in strengthening rotator cuff and scapular stabilizers muscles. For that purpose, participants had to follow a strengthening program 3 times a week during 8 weeks.

Description:

Each participant was allocated to a group (analytic, functional and mixed groups) in a random way while assuring that the groups were quite similar in morphological data or in performance. The strengthening program has to be performed three times a week during eight weeks by each participant.

The exercises included in the program were chosen among the bests exercises described in literature to active shoulder rotators as well as scapular stabilizing muscles. The analytic group has to perform the following exercises: prone rowing with dumbbell, prone external rotation at 90° of abduction, prone extension, bilateral scapular protraction with dumbbells, eccentric internal rotation at 90° of abduction, external rotation diagonal exercise and single arm shot put medicine ball throw. The functional group performed the same exercises but with a functional component: standard plank rowing, swissball external rotation at 90° of abduction, standard plank extension, bilateral scapular protraction (standard plank + raised feet), eccentric internal rotation 90° of abduction with unipodal glute bridge, external rotation diagonal in an unipodal position and single arm shot put throw with medicine ball in and single arm shot put medicine ball throw. Then, for the mixed group, the program included exercises from the analytic group and other ones from the functional group in equal parts. For all the groups, the exercises aimed to strengthen shoulder rotators were performed five times in a row and the others aimed to strengthen scapular stabilizing muscles were performed fifteen times in a row. The only exception was for the single arm shot put medicine ball throw that was performed ten times. Two series of each exercises were performed during each session, which represent a mean duration of thirty minutes.

At the beginning and at the end of the intervention, three different evaluations were performed :

• Measurement of shoulder rotators strength (with an isokinetic device)

• Measurement of scapular stabilizers strength (with an isokinetic device)

• Measurement of functional performance (with Medicine Ball Throw, CKCUEST, Y Balance Test and a core stability test)

Recruitment information / eligibility

• Status: Completed
• Enrollment: 38
• Est. completion date: January 15, 2022
• Est. primary completion date: December 15, 2021
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: Male
• Age group: 18 Years to 35 Years

Eligibility

Inclusion Criteria:

• Males aged between 18 and 35 years old

Exclusion Criteria:

• Practicing an overhead sport

• Having an history of shoulder pain or shoulder surgery in the past 12 months

Related Conditions & MeSH terms

• Strength

Intervention

Other:
• Strengthening exercises
The participants had to perform specific exercices 3 times a week during 8 weeks

Locations

Country	Name	City	State
Belgium	Université de Liège	Liège

Sponsors (1)

Lead Sponsor	Collaborator
University of Liege

Country where clinical trial is conducted

Belgium, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Shoulder rotators strength	The strength was measured with an isokinetic device	Change from baseline at 8 weeks
Primary	Scapular stabilizing muscles strength	The strength was measured with an isokinetic device	Change from baseline at 8 weeks
Primary	Upper Quarter Y Balance Test	A closed-kinetic-chain upper extremity functional test aimed to assess stability and mobility of the shoulder	Change from baseline at 8 weeks
Primary	Closed Kinetic Chain Upper Extremity Stability Test	A closed-kinetic-chain upper extremity functional test aimed to assess coordination and shoulder stability	Change from baseline at 8 weeks
Primary	Medicine ball throw	The participants had to throw a 800g-medicine ball as far as possible	Change from baseline at 8 weeks
Primary	Core stability test	The participants had to maintain a plank position as long as possible	Change from baseline at 8 weeks