Asymptomatic Condition
Conditions
Keywords
symmetry index, functional performance tests, SMT
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.
Interventions
PROCEDURESpinal Manipulative Therapy
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.
PROCEDURESHAM
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).
Sponsors
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior.
University of Lisbon
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Outcomes Assessor)
Masking description
Participants were initially instructed about the study procedures with therapeutic interventions. After collected data, the participants were asked about the therapeutic intervention, if they are capable to identify which intervention were performed, SMT or SHAM, as parte of study protocol.
Intervention model description
randomized controlled single-blinded study.
Eligibility
Sex/Gender
ALL
Age
18 Years to 35 Years
Healthy volunteers
Yes
Inclusion criteria
The inclusion criteria for sample followed the assumptions below: * All young student participants had to be of both sexes, age between 18-35 years old. * All participants had to be pain free or asymptomatic, with regards to low back pain, in order to create homogeneity within the study sample. * All participants had to have at least a minimal score, (low level) of physical activity, evaluated by (IPAQ) questionnaire (International Physical Activity Questionnaire). This was done on the argument that the minimal score, already shows that the participants were minimally physically active. This also contributed in an indirect way to assure a certain degree of sample homogeneity, scoring the minimal level of physical activity to include in the study; * All participants were required to show the subluxations or vertebral dysfunctions in their lumbar spine, detected by motion palpation. Through the purposive sampling, was allowed participants to officially take part in the study.
Exclusion criteria
The
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Kinetic Symmetry (Lower Limbs Ground Reaction Forces) | 5 min after lumbar SMT intervention | Lower Limbs Ground Reaction Forces measured by the force platforms |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| 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 |
Countries
Portugal
Outcome results
None listed