Dr. Fred Illi (famous early chiropractor from Switzerland) developed the first four-quadrant weight scale in the mid-twentieth century. The idea was to determine the location of the center of gravity of a patient in quiet standing. The thought being the further from the center, the more physical stress the body would be under.
In the mid 1980’s, I developed a four-quadrant weight scale using computerized scales. We could not only measure the center of pressure (what we used to think was center of gravity), but could also measure the postural sway over a short time period. Two papers were written using this device.
In 2018 we built a new model, THE CENTRE OF PRESSURE SCALE.
Measuring postural sway in the standing position is the focus of much research right now.
Differentiating malingering balance disorder patients from healthy controls, compensated unilateral vestibular loss, and whiplash patients using stance and gait posturography.
Altered postural sway in patients suffering from non-specific neck pain and whiplash associated disorder – A systematic review of the literature
Instant reduction in postural sway during quiet standing by intraoral dental appliance in patients with Whiplash associated Disorders and non-trauma neck pain
Effectiveness of Exercise Interventions to Improve Postural Control in Older Adults: A Systematic Review and Meta-Analyses of Centre of Pressure Measurements
Day-to-Day Variability of Postural Sway and Its Association With Cognitive Function in Older Adults: A Pilot Study
Impaired Postural Control and Altered Sensory Organization During Quiet Stance Following Neurotoxic Chemotherapy: A Preliminary Study
Functional near-infrared spectroscopy reveals the compensatory potential of pre-frontal cortical activity for standing balance in young and older adults
A review of center of pressure (COP) variables to quantify standing balance in elderly people: Algorithms and open‐access code*
Rambling-trembling center-of-pressure decomposition reveals distinct sway responses to simulated somatosensory deficit
Altered neuromuscular activity and postural stability during standing balance tasks in persons with non-specific neck pain
Quantitative Assessment of Balance for Accurate Prediction of Return to Sport From Sport-Related Concussion
It should be seen that this device is good for both assessment and outcomes measurements for conditions such as concussions and risk of falling.
As data is collected and stored, machine learning will determine various common patterns of center of pressure procession. As the clinician collects samples, he sends them to a prescribed data bank. These new patterns may be indicators for many conditions outside of post-concussion symptoms and falling risks.