An interventional study of Lower Extremity First (LEF) and Upper Extremity First (UEF) in Healthy, sponsored by Parker University. Completed at 1 site in United States. Open to participants aged 21 Years to 40 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2020-02-07.
Sponsored by Parker University · Not applicable, Interventional, and Treatment
This study will evaluate the multi-segmental postural sway after upper versus lower extremity manipulation.
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.
Parker University is the lead sponsor of 10 studies on the registry; none are open to participants now.
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Exclusion Criteria:
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).
Procedure: Lower Extremity First (LEF)
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).
Procedure: Upper Extremity First (UEF)
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).
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).
Postural Assessment
Each participant was fitted with two Shimmer3 sensors (Shimmer Sensing, Dublin, Ireland) on their head (occiput) and low back (over S2 tubercle) (see Figure 2) with a third Shimmer3 sensor placed on the surface (ground or rocker board). Participants were asked to perform a series of four postural tasks with two surface conditions (floor or rocker board) and two variations of each (eyes open or closed, and AP or ML rocker board direction). The conditions were randomized (using REDCap) such that either both floor or both rocker board conditions were performed first, with the remainder performed second. The order of variation within the surface type was held consistent for all occasions; eyes open then eyes closed on the floor, and AP then ML rotation direction on the rocker board.
Time frame: Post Treatment on Day 1
Postural Assessment
Each participant was fitted with two Shimmer3 sensors (Shimmer Sensing, Dublin, Ireland) on their head (occiput) and low back (over S2 tubercle) (see Figure 2) with a third Shimmer3 sensor placed on the surface (ground or rocker board). Participants were asked to perform a series of four postural tasks with two surface conditions (floor or rocker board) and two variations of each (eyes open or closed, and AP or ML rocker board direction). The conditions were randomized (using REDCap) such that either both floor or both rocker board conditions were performed first, with the remainder performed second. The order of variation within the surface type was held consistent for all occasions; eyes open then eyes closed on the floor, and AP then ML rotation direction on the rocker board.
Time frame: Pre Treatment on Day 2
Postural Assessment
Each participant was fitted with two Shimmer3 sensors (Shimmer Sensing, Dublin, Ireland) on their head (occiput) and low back (over S2 tubercle) (see Figure 2) with a third Shimmer3 sensor placed on the surface (ground or rocker board). Participants were asked to perform a series of four postural tasks with two surface conditions (floor or rocker board) and two variations of each (eyes open or closed, and AP or ML rocker board direction). The conditions were randomized (using REDCap) such that either both floor or both rocker board conditions were performed first, with the remainder performed second. The order of variation within the surface type was held consistent for all occasions; eyes open then eyes closed on the floor, and AP then ML rotation direction on the rocker board.
Time frame: Post Treatment on Day 2
Postural Assessment
Each participant was fitted with two Shimmer3 sensors (Shimmer Sensing, Dublin, Ireland) on their head (occiput) and low back (over S2 tubercle) (see Figure 2) with a third Shimmer3 sensor placed on the surface (ground or rocker board). Participants were asked to perform a series of four postural tasks with two surface conditions (floor or rocker board) and two variations of each (eyes open or closed, and AP or ML rocker board direction). The conditions were randomized (using REDCap) such that either both floor or both rocker board conditions were performed first, with the remainder performed second. The order of variation within the surface type was held consistent for all occasions; eyes open then eyes closed on the floor, and AP then ML rotation direction on the rocker board.
Time frame: Pre Treatment on Day 3
Plan to share: Undecided — It is not yet known if there will be a plan to make IPD available.
No publications or documents are linked to this record.
Ran from Jul 2017 to primary completion in Aug 2017, 0 months.
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