The Immediate Effects of Spinal Manipulative Therapy on Kinetic and Kinematic Symmetry.

Not Applicable

Completed

• Conditions: Asymptomatic Condition
• Interventions: Procedure: Spinal Manipulative Therapy; Procedure: SHAM

• Registration Number: NCT03361592
• Lead Sponsor: University of Lisbon

Brief Summary

Athletes have been exposed to an ever increasing training load and subsequent biomechanical overload due to a constant demand for performance enhancement. As a result, it is observed an increased rate of musculoskeletal problems, including spinal biomechanical dysfunctions that are often asymptomatic. These dysfunctions are believed to negatively influence a wide range of mechanical and physiological parameters such as muscle strength, range of motion, and symmetry, what could potentially influence sports performance.

Spinal Manipulative Therapy (SMT) is a safe and effective therapy for musculoskeletal disorders that has been increasingly utilized in sports. SMT purpose is to correct spinal joints biomechanical dysfunctions using a high-velocity, low-amplitude movement, applied at the paraphysiological space, beyond the passive joint range of motion.

Kinetic and kinematic symmetry can be measured in commonly utilized physical functional tests often used as indicators of athlete's performance. Symmetry Index calculation is used to verify bilateral asymmetries in static and dynamic tests.

Detailed Description

Therefore, the objective of this randomized controlled trial study is to measure the immediate effects of lumbar SMT on kinetic and kinematic symmetry of asymptomatic athletes, through of the use of three commonly used functional tests: Static posture, Free Squat, and Countermovement Jump (CMJ) are often used as indicators of athlete's performance. These quantitative data is important to assess training effectiveness and prevention/ rehabilitation programs outcomes. To our knowledge this is the first study on literature that measured the immediate effects of SMT on kinetic and kinematic symmetry.

Study Timeline

• Study Start: 2017-09-04
• Primary Completion: 2017-09-22
• Study First Submitted: 2017-11-06
• Study First Submitted QC: 2017-11-28
• Study Completion: 2017-12-05
• Study First Posted: 2017-12-05
• Status Verified: 2018-04
• Last Update Submitted: 2018-04-30
• Last Update Posted: 2018-05-03

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 40

Inclusion Criteria

Not provided

Exclusion Criteria

The exclusion criteria for sample followed the assumptions below:

• Participants who received medical, surgical or in addition manual interventions prior or during the study, were immediately excluded.
• Participants who presented with any contraindications to manipulation on spine, which included but was not limited to osteomyelitis, tuberculosis, infectious arthritis, disc extrusion, hemangioma, vertebral malignancy and advanced spondylolisthesis
• Participants who have participating of sports competitions or change in training routine during the collecting data, was immediately withdraw from the study.;
• Participants with no vertebral dysfunction in the palpated lumbar joints were excluded of the study;
• Participants who did not sign the informed consent form, or not agree of the conditions, or did not have conditions to compromise with the schedule, were immediately withdraw from the study.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Spinal Manipulative Therapy	Spinal Manipulative Therapy	The participants assigned to the intervention group received the procedure Lumbar (SMT) was performed after baseline measurements, using Diversified techniques, aiming to correct vertebral dysfunctional segments after clinical assessment. Participants were asked to lay down prone on, to perform spinal motion palpation analysis was performed in order to evaluate the presence of dysfunction in vertebral segments of lumbar spine.
Sham pre-load positioning SMT	SHAM	The participants assigned to the control group received the procedure "Sham" (pre-load positioning MVT). The Sham (SMT) was performed with participant body positioning in the lateral position, as the SMT intervention. The doctor followed the participant through the same position of (SMT) intervention, using the maintenance of set-up position, but no manipulative thrust was delivered. The therapist applied minimal pressure and slid their hands across the skin to mimic the manipulative trust. The position was maintained for approximately 1 minute in total, 30 seconds on each side, and none of force or researcher body weight were putted in this procedure, only minimal pressure common to stabilize the set up position of (SMT).

Primary Outcome Measures

Name	Time	Method
Kinetic Symmetry (Lower Limbs Ground Reaction Forces)	5 min after lumbar SMT intervention	Lower Limbs Ground Reaction Forces measured by the force platforms

Secondary Outcome Measures

Name	Time	Method
Kinematic Symmetry (Linear Global Joint Centers Vectors Displacement)	5 min after lumbar SMT intervention	Linear Global Joint Centers Vectors Displacement measured by the 3D motion capture system

Trial Locations

Locations (1)

Bruno Araújo Procópio de Alvarenga; 🇵🇹 Lisbon, Portugal