The aim of this study is to investigate the immediate effects of high-velocity low-amplitude (HVLA) chiropractic manipulation on the autonomic nervous system and baropodometric parameters. The effects of different manipulation techniques on pedobarographic analysis and the autonomic nervous system were examined.
Ninety-six individuals who met the inclusion criteria participated in the study. The participants were divided into three groups: the sacroiliac joint manipulation group (n=32), the cervical manipulation group (n=32), and the control group (n=30). No treatment was administered to the control group, while sacroiliac joint manipulation and cervical manipulation were applied to the sacroiliac joint manipulation group and the cervical manipulation group, respectively. Autonomic nervous system activity was assessed using the Polar H-10 device, pedobarographic analysis was performed using the METISENS pedobarographic evaluation device, and blood pressure and pulse were measured manually from the left arm using a sphygmomanometer. A 30-minute waiting period was used during the evaluation of the control group. A significance level of p\<0.05 was considered
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
DOUBLE
Enrollment
96
The patient was asked to tie his arms while he was in the side lying position. The patient's upper knee was flexed and positioned such that it was placed in the popliteal fossa of the lower knee, while the lower knee was in full extension. Pushing maneuver was performed with HVLA from posterior to anterior and from medial to lateral with pelvic rotation. The contact point of the sacroiliac joint was PSIS.
Cervical SM was applied supine to restrictions found on motion palpation, according to the technique described by Bergmann and Peterson28 The participant's head and neck were simultaneously rotated and laterally flexed over the contact point-specifically, the posterior supramastoid groove or zygomatic arch (C0-C1), the posterior aspect of the transverse process (C1-C2), or the posterior articular pillar of superior vertebrae (C2-C7) -to the end of passive ROM. Thereafter, a high-velocity, low-amplitude thrust was delivered in the direction of restricted movement. Participants with more ROM restriction in the lateral plane were given more lateral-to-medial directed thrusts; participants with more restriction in rotation were given thrusts in the direction of restricted axial rotation; and participants with more restriction in extension were given more anteriorly directed thrusts.
Sinop University
Sinop, Turkey (Türkiye)
Evaluation of Autonomic Nervous System
The assessment of the autonomic nervous system was conducted using the Polar H10 device, which is a high-accuracy, gold-standard HRV sensor that comes with a chest-worn strap. The device can connect to multiple components via Bluetooth and ANT+. This device facilitates the measurement of heart rate variability (HRV), R-R intervals, RMSSD (an instantaneous assessment of the parasympathetic system), LF Power (activation of the sympathetic nervous system), HF Power (activation of the parasympathetic nervous system), HF band, and LF/HF ratio (sympathetic-vagal balance). For data analysis, the Elite HRV software supported by the device is utilized. Measurements are conducted while the participant is seated and last approximately one minute. To ensure accurate measurements, it is necessary to moisten the electrode surface before each measurement. During the assessment, the participant should not speak or move
Time frame: In the manipulation groups, measurements were repeated immediately after the manipulation, while in the control group, the initial measurements were repeated 30 minutes later.
Evaluation of Blood Pressure
Blood pressure of the participants were evaluated with a manual sphygmomanometer on the left arm.
Time frame: In the manipulation groups, measurements were repeated immediately after the manipulation, while in the control group, the initial measurements were repeated 30 minutes later.
Analysis of Pedobarographic Data
The analysis of pedobarographic data was conducted using METISENS pedobarographic assessment devices. During the measurements of pressure analysis in individuals participating in our study, static conditions were maintained, and the load distribution on both the right and left feet, as well as the loads on the anterior and posterior aspects of the foot (%), were reported. Pressure analyses were determined using the Metisens Baropodometric Analysis software, which is the proprietary software that operates in conjunction with the Metisens Pedobarographic Assessment Device (It is not possible to separate these measurements as the device takes all measurements and provides a total analysis.)
Time frame: In the manipulation groups, measurements were repeated immediately after the manipulation, while in the control group, the initial measurements were repeated 30 minutes later.
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Evaluation of Pulse
The pulse of the participants were evaluated with a manual sphygmomanometer on the left arm.
Time frame: In the manipulation groups, measurements were repeated immediately after the manipulation, while in the control group, the initial measurements were repeated 30 minutes later.