Extremity Manipulation Impact on Postural Sway Characteristics

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

25 participants

Study Classification

INTERVENTIONAL

Study Start Date

2017-07-24

Study Completion Date

2017-08-09

Brief Summary

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This study will evaluate the multi-segmental postural sway after upper versus lower extremity manipulation.

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Detailed Description

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The focus of this study is to explore the effect of upper and lower extremity chiropractic adjustments (manipulation) as well as surface condition (hard surface vs rocker board) on multisegmental postural control as represented by postural sway. Using a rocker (tilt) board, the participant cannot stand still, but has to adjust posture continuously to maintain balance. Body sways are considered to be self-induced because the design of the rocker board creates a natural instability without any external perturbation. This task provides a self-driven sensorimotor condition in addition to amplifying the sway dynamics. Because the rocker board has only one degree of freedom of motion, anteroposterior and lateral sways were considered separately on the device.

The investigators had the following hypotheses.

Hypothesis 1: Lower extremity adjustments will lead to reduced postural sway magnitude compared to upper extremity adjustments.

Hypothesis 2: Lower extremity adjustments will reduce sway variability of the rocker board, trunk and head compared to upper extremity adjustments.

Hypothesis 3: Lower extremity adjustments will facilitate the organization of sway behavior as assessed by the chaotic structure of sway.

Conditions

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Healthy

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

This study used a randomized, crossover experimental design over three days of testing.

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Outcome Assessors

Treatment was unknown to outcome assessors. Participant were unaware of what the treatment would be and how it may / may not impact the outcome.

Study Groups

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Lower Extremity First (LEF)

The treatment was a non-specific long-axis distraction to the ankle, knee, and hip provided was at the discretion of the clinic doctor (over 25 years experience).

Group Type EXPERIMENTAL

Lower Extremity First (LEF)

Intervention Type PROCEDURE

The intervention for the LEF group was a non-specific long-axis distraction to the ankle, knee, and hip or shoulder, elbow and wrist provided was at the discretion of the clinic doctor (over 25 years experience).

Upper Extremity First (UEF)

The treatment was a non-specific long-axis distraction to the shoulder, elbow and wrist provided was at the discretion of the clinic doctor (over 25 years experience).

Group Type EXPERIMENTAL

Upper Extremity First (UEF)

Intervention Type PROCEDURE

The intervention for the UEF group was a non-specific long-axis distraction to the shoulder, elbow and wrist provided was at the discretion of the clinic doctor (over 25 years experience).

Interventions

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Lower Extremity First (LEF)

The intervention for the LEF group was a non-specific long-axis distraction to the ankle, knee, and hip or shoulder, elbow and wrist provided was at the discretion of the clinic doctor (over 25 years experience).

Intervention Type PROCEDURE

Upper Extremity First (UEF)

The intervention for the UEF group was a non-specific long-axis distraction to the shoulder, elbow and wrist provided was at the discretion of the clinic doctor (over 25 years experience).

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* student in Parker University's Doctor of Chiropractic program and patient at the Parker University Wellness Clinic;
* available to take part in the study for all 3 test days;
* willing to forgo all non-normal daily activities and chiropractic treatments during the test days;

Exclusion Criteria

* pregnant;
* previous major injury involving the extremities;
* previous surgeries to an extremity joint; and
* known neurological or systemic diseases.

Minimum Eligible Age

21 Years

Maximum Eligible Age

40 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes