The Effects of Exercise Training on Shoulder Neuromuscular Control

NCT02164305 | Completed DMC

• 1 other identifier: 07252013.032
• Study Type: interventional
• Target: 42
• Locations: 1 country
• Sites: 1

Brief Summary

Dynamic control of the rotator cuff muscles plays an important role in stabilizing the shoulder during motion. Impairment in the neuromuscular control of these muscles may to lead to injury and pain. Rehabilitation programs have moderate success in decreasing pain and improving shoulder function. While most of these programs target the rotator cuff, it is still unknown if they serve to improve the neuromuscular control of the rotator cuff muscles. The rehabilitation may induce neurological and physiologic changes in neuromuscular structures and thus alter the neuromuscular control of the entire shoulder complex. Kinematics and electromyographic (EMG) activities have been widely used to study neuromuscular control. However, corticospinal excitability, which has been widely examined in the patients with neurological disorders, provides a more detailed account of central control from the primary motor cortex through the spinal cord to the muscles. This assessment of neuromuscular control will serve to illuminate the ability of the shoulder muscles to handle the stress from activities such as overhead sports activities and carrying or lifting heavy objects. This approach could be used to help design efficient training program for athletes and effective rehabilitation program for patients with shoulder injuries. The purpose of the proposed study is to investigate the effect of exercise treatment effect on the proprioception, kinematics, EMG and corticospinal excitability of shoulder muscles, including the deltoid and rotator cuff muscles.

Conditions

Shoulder Impingement

Keywords

Rotator cuff muscle; Excitability; Proprioception; Kinematics; Muscle activity; Electromyography

Outcome Measures

Primary Outcomes (1)

• Change from baseline in muscle activity of rotator cuff and scapular muscles at 4 weeks

  Baseline and 4 weeks

Secondary Outcomes (3)

• Change from baseline in elevation force at 4 weeks

  Baseline and 4 weeks

• Change from baseline in proprioception errors at 4 weeks

  Baseline and 4 weeks

• Change from baseline in the amplitude of motor evoked potential of rotator cuff at 4 weeks

  Baseline and 4 weeks

Study Arms (3)

Strengthening group

EXPERIMENTAL

4-week exercise training, 3 times a week, 30 minutes per visit.

Other: Strengthening group

Neuromuscular group

EXPERIMENTAL

4-week exercise training, 3 times a week, 30 minutes per visit

Other: Neuromuscular group

Control

SHAM COMPARATOR

Only have 2 assessments.

Other: Control

Interventions

Strengthening group OTHER

Open-chain exercise for rotator cuff and scapular muscles

Strengthening group

Neuromuscular group OTHER

Closed-chain exercise for shoulder muscles

Neuromuscular group

Control OTHER

No exercise training

Control

Eligibility Criteria

• Age: 18 Years - 50 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• Healthy subjects

You may not qualify if:

• Less than 135 degrees of active humeral elevation in the scapular plane
• Prior shoulder and cervical surgery
• Presence of shoulder and neck pain
• Had history of head, cervical or shoulder pain or pathology
• Stroke and neurological impairment
• History of seizures
• Taking anti-seizure and anti-depressive medication
• With pacemaker and other magnetic implant
• Pregnancy
• Athletes performing upper extremity exercise

Sponsors & Collaborators

• University of Oregon: lead

Study Sites (1)

University of Oregon

Eugene, Oregon, 97403, United States

Location

MeSH Terms

Conditions

Shoulder Impingement Syndrome

Condition Hierarchy (Ancestors)

Joint Diseases; Musculoskeletal Diseases; Shoulder Injuries; Wounds and Injuries

Study Officials

• Andrew Karduna, PhD

  Department of Human Physiology at University of Oregon

  STUDY DIRECTOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: SINGLE
• Who Masked: PARTICIPANT
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: May 21, 2014
• First Posted: June 16, 2014
• Study Start: May 1, 2014
• Primary Completion: September 1, 2015
• Study Completion: October 1, 2015
• Last Updated: September 14, 2017

Record last verified: 2017-09

Data Sharing

• IPD Sharing: Will not share

Locations

US (1)