The Immediate Effects of Spinal Manipulative Therapy on Kinetic and Kinematic Symmetry.
Condition: Asymptomatic Condition
MeSH terms: Asymptomatic Diseases
Study type: Interventional

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.
    

Intervention name(s): Spinal Manipulative Therapy; SHAM
Intervention type(s): Procedure; Procedure
Intervention description(s): Lumbar (SMT) was performed using Diversified techniques, aiming to correct vertebral dysfunctional lumbar segments. Participants were asked to lay down prone on, to perform spinal motion palpation analysis was in order to evaluate the presence of dysfunction in vertebral segments of lumbar spine.; The "SHAM" (pre-load positioning 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 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).
Other intervention name(s): Movement Disorders/therapy; Spinal Manipulation; Control Group
Allocation: Randomized
Intervention model: Parallel Assignment
Intervention model description: randomized controlled single-blinded study.
Masking: Single (Outcomes Assessor)
Primary purpose: Treatment
Keywords: symmetry index, functional performance tests, SMT