Specifications of the clinical stabilometry platform ‘ADAP_NORMES13’

Abstract

Following the decision of the International Committee, ISPGR, for Standardization of the clinical stabilometry not to decide anything because a series of decisions must be arbitrary, the posturologists have decided to adopt a new definition of stabilometry: "Stabilometry observes and measures how a man manages to stabilize himself in imposed arbitrary conditions." This definition allows offering to builders arbitrary specifications of a vertical forces platform, appropriate to their medical practice.

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TECHNICAL ADVANCE ARTICLES
Manual Therapy, Posturology & Rehabilitation Journal. ISSN 2236-5435. Copyright © 2016. This is an Open Access article
distributed under the terms of the Creative Commons Attribution Non-Commercial License which permits unrestricted
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Specifications of the clinical stabilometry platform
‘ADAP_ NORMES13’
Pierre-Marie Gagey1
ABSTRACT
Latin posturologists unanimously recognize and accept that the normalization of stabilometry can only be based on decisions often
arbitrar y . These specifications of the standard stabilometry platform, ADAP-N ormes2013, represent the first series of those decisions,
admittedly arbitrary but made after a discussion with the French and Russian platform manufacturers, in Paris on 13 December 2007.
Keywords: Stabilometry; Force platform; Normalisation; Specifications.
Corresponding author: Pierre-Marie Gagey. Paris, France. E-mail: pmgagey@club-internet.fr
1 Institut de Posturologie Paris, Paris, France.
Financial support: No nancial support.
Submission date 15 December 2015; Acceptance date 1 March 2016; Publication online date 16 March 2016
http://dx.doi.org/10.17784/mtprehabjournal.2016.14.332
METROLOGY
The figure 1 shows the normal operating range with
minimum and maximum values.
The gure 2 shows the storage temperature range.
Average time of good uptime
The manufacturer will specify the me interval between
periodic inspecons.
Validation tests Procedures
The Parre’s test procedure(1) may be used to validate the
compliance of the plaorm with the specicaons.
STABILOMETRIC SIGNAL
Center of gravity
The calculaon of the posion of the center of gravity must
comply with the sources, provided free by the ADAP.(2)
Not because this calculaon would be the best, but because
we need to work on the same values.
This calculaon should use the height of the subject and
the form factor: 0.659, not because it would be the best, but
because we need to work on the same values.(3)
Signal analysis
Manufacturers may provide all stabilometric parameters
they want. But ADAP has dened some parameters described
in a data basis; the soware provided by manufacturers must
produce exactly the same values of these parameters as those
given in the data basis. (The data basis will be published later).
Transfer of the stabilometric signal
The coordinates of the center of pressure of each
recording must be available for anyone. At the end of the
le, the rst ve tags will give these indicaons, in this order
and these units:
1) Height (cm),
2) Weight (Kg),
3) Shoe size (French),
4) Sex,
5) Age (Years)
NON MANDATORY APPENDIX
Weight of the skirt of the platform
The error due to the weight of the skirt of the plaorm
is to be corrected, simply by mulplying the signal by the
coecient:
( )
/1 Pj Ps+
where Pj is the weight of the skirt and Ps is the subject’s weight.

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ADAP_NORMES13 MTP&RehabJournal 2016, 14: 332
Figure 1. Normal operang range.
Figure 2. Absolute Maximum Rangs.
Figure 3. Proposal of a standard connecon plaorm/PC.
(*) “8A” 2bytes header: “10001010” in binary.
(**) « 0 » for a valid measurement.
UART communicaon using USB2.0 cable & COM port compable.
• Baud Rate: 9600 bps minimum … 115.200 bps maximum.
• Data: 8 bits.
• Stop Bit: 1bit.
• Parity: None.
Height of the platform
It could be a good idea reducing the distance between the
plane of the gauges and the superior plane of the plaorm.(4)
The gure 3 shows the proposal of a standard connecon
plaorm/PC.
CERTIFICATE OF CONFORMITY
Direcve 93/42 / EEC and its Annexes of the Council of
Europe of 14 June 1993(5) provides that: “The EC declaraon
of conformity is the procedure whereby the manufacturer
ensures and declares that the products concerned meet the
provisions of the Direcve ... “
This obligaon and its consequences are therefore imposed
to the builders of stabilometric platforms conform to the
specifications ADAP2013 (considered as Medical Devices,
Class 1 m, with measuring funcon), parcularly in its Annexes
VI and X (point 3). It belongs to them taking all technical,
industrial, organizaonal and contractual decisions needed
to cerfy the proper compliance of their plaorms to these
specicaons.

3
Gagey PM
MTP&RehabJournal 2016, 14: 332
COMPETING INTERESTS
The author(s) declare that they have no compeng interests.
REFERENCES
1. Parre F. Qualicaon d’une plate-forme de stabilométrie. 2005 [cited
2015]; Rapport de stage d’un DESS de Physique, Université de Toulouse
(48 pages)]. Available from: hp://ada-posturologie.fr/Parre.pdf.
2. Gagey B. Programmaon du calcul de la soluon numérique de l’équaon
de WINTER. 2011; Available from: hp://ada-posturologie.fr/Programme_
Bernard.pdf<.
3. Gagey B. Etude sur le coecient de l’équaon de Winter. 2013 [cited 2013
06/10//2013]; Available from: hp://ada-posturologie.fr/Winter_coecient_
k2.pdf.
4. Kodde L, Nieuwenhuizen J, Massen C. The inuence of platlorm geometry on
stabilograms. Biomedizinische Technik. 1978;23(5/6):130-113 l.
5. Lexurisery. Direcve 93/42 EEC. 1993 [cited 2015]; Available from: hp://
eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=CONSLEG:1993L004.