Does Passive Spinal Mobilization Improve Shoulders Strength in Healthy Adults?

Not Applicable

Completed

• Conditions: Healthy
• Interventions: Behavioral: Passive mobilization; Other: Placebo

• Registration Number: NCT02392949
• Lead Sponsor: The Hong Kong Polytechnic University

Brief Summary

Previous studies have shown that peripheral muscles weakness or inhibition is related to spinal disorders. Passive mobilization and manipulation are likely to reverse such muscle weakness for patients with spinal pain. The purpose of the study was to assess the effect of spinal mobilization on the maximal muscle strength of the shoulders.

Detailed Description

Participants without existing neck pain or shoulder problem will be recruited. Subjects will be screened by 2 investigators independently for shoulder muscle weakness. Weakness is determined by the strength of the other side when one side is remarkably weaker or by comparing with the general strength of the deltoid muscle if both sides are suspected involved.

Suitable participants will undergo shoulder strength testing with a handheld dynamometer. Participants will be divided into the intervention group and the control group randomly. The shoulder strength will be tested by the second, individual blinded assessor.

Subjects in the intervention group will receive passive spinal mobilization at cervical 4-5 segment on the involved side(s); the control group will receive placebo intervention.

Each participant will be tested for 2 times, before and immediately after a C4-5 joint mobilization on the involved side (s).

Study Timeline

• Study First Submitted: 2015-02-27
• Study First Submitted QC: 2015-03-18
• Study First Posted: 2015-03-19
• Study Start: 2015-04
• Primary Completion: 2015-08
• Study Completion: 2015-08
• Status Verified: 2016-06
• Last Update Submitted: 2016-06-11
• Last Update Posted: 2016-06-14

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 22

Inclusion Criteria

• Healthy adults

Exclusion Criteria

• People with active neck or should pain

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Experimental group	Passive mobilization	Passive mobilization on cervical spine
Control	Placebo	Placebo exercise on arms

Primary Outcome Measures

Name	Time	Method
Electromyography (EMG) (signal from deltoid muscle)	10 minutes after the intervention	The EMG measure on the signal from deltoid muscle immediately after intervention
Deltoid muscle strength (dynamometer)	10 minutes after the intervention	Immediate measure after the intervention by dynamometer

Trial Locations

Locations (1)

The Hong Kong Polytechnic University; 🇭🇰 Hong Kong, Hong Kong