WO2001050958A1 - Procede et systeme d'analyse de mouvement - Google Patents

Procede et systeme d'analyse de mouvement

Info

Publication number
WO2001050958A1
WO2001050958A1 PCT/FI2000/000014 FI0000014W WO0150958A1 WO 2001050958 A1 WO2001050958 A1 WO 2001050958A1 FI 0000014 W FI0000014 W FI 0000014W WO 0150958 A1 WO0150958 A1 WO 0150958A1
Authority
WO
WIPO (PCT)
Prior art keywords
movement
exercise apparatus
statistical model
muscular exercise
muscular
Prior art date
Application number
PCT/FI2000/000014
Other languages
English (en)
Inventor
Simo Taimela
Original Assignee
Dbc International Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dbc International Oy filed Critical Dbc International Oy
Priority to AU21134/00A priority Critical patent/AU2113400A/en
Priority to PCT/FI2000/000014 priority patent/WO2001050958A1/fr
Publication of WO2001050958A1 publication Critical patent/WO2001050958A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B24/00—Electric or electronic controls for exercising apparatus of preceding groups; Controlling or monitoring of exercises, sportive games, training or athletic performances
    • A63B24/0003—Analysing the course of a movement or motion sequences during an exercise or trainings sequence, e.g. swing for golf or tennis
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/22—Ergometry; Measuring muscular strength or the force of a muscular blow
    • A61B5/221—Ergometry, e.g. by using bicycle type apparatus
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb

Definitions

  • the present invention relates to a method as defined in the preamble of claim 1 and to a system as defined in the preamble of claim 5 for the analysis of a movement made with a muscle exercise apparatus.
  • US 4,893,808 presents a device for the measurement of functional properties of the cervical spine or neck.
  • the apparatus can be used to measure and analyze e.g. the velocity of movement and its changes in order to analyze deficiencies in the performance of the neck, but the specification does not disclose any concrete means or method for analyzing the measured information.
  • a feature typical of musculoskeletal disorders is abnormal, e.g. jerky movement.
  • the human mo- toric regulation system is disturbed e.g. in consequence of pain. From a medical point of view, research on this phenomenon is important ⁇ for diagnosing. The problem is that current research methods are largely based on the observer's own experience, his/her opinion of correct and incorrect movement .
  • the instru- ments such as a goniometer, used in the examination are very sensitive in respect of correctness of the method of measurement and calibration.
  • Previously known is a system in which a movement is examined e.g. by means of a video system. In this case, special points whose movement is monitored via a digitized image recognition system are attached to the person testing the apparatus.
  • the problems with this type of investigation are a complexity of the resources required by the system and the number of degrees of freedom; the essential features of the movement are difficult to distinguish from two-dimensional measurement data.
  • the object of the invention is to eliminate the problems referred to above.
  • a specific object of the invention is to disclose a new type of method and system that will make it possible to analyze the qual- ity of a movement performed with a muscular exercise apparatus .
  • the method of the invention is characterized by what is presented in claim 1.
  • the system of the invention characterized by what is presented in claim 5.
  • the velocity quantity of a movement is measured by means of a device connected to a part of a muscular exercise apparatus resisting the movement.
  • a part resisting the movement means a part of the muscular exercise appara- tus which is moved by the user performing an exercise.
  • a statistical model describing its smoothness is generated; the statistical model is compared with predetermined models; and, based on the comparison, feedback regarding the quality of the movement is given.
  • the muscular exercise apparatus Based on measurement data obtained from tests with a larger number of persons, different models have been generated, on the basis of which the movement can be classified as a correct or an incorrect type of performance. Thus, it is possible e.g. to qualify the level of the movement performed with the muscular exercise apparatus.
  • the user of the muscular exercise apparatus is given feedback about the quality of the performance.
  • the feedback may be e.g. of a visual or auditory nature, and it is given e.g. during the performance, thus allowing the user to observe the quality of his/her own performance.
  • the statistical model is generated by dividing the path of the movement of the muscular exercise apparatus into sections and saving information regarding the time spent in 8
  • the device measuring the movement is preferably connected to a rotatable main shaft of the muscular exercise apparatus.
  • the muscular exercise apparatus is an apparatus for the exercise of the cervical and upper spinal muscles.
  • the statistical model can be generated by only considering the effect of appropriate groups of muscles.
  • the invention relates to a system for the analysis of a movement performed with a muscu- lar exercise apparatus.
  • the system comprises means for generating from a measured velocity quantity a statistical model describing the smoothness of the velocity quantity; means for comparing the statistical model with predetermined models; and means for giving feedback based on the comparison regarding the quality of the movement.
  • the system preferably comprises means for giving visual and/or auditory feedback to the user of the muscular exercise apparatus .
  • the feedback may be given e.g. via a display device, a light system or equivalent, allowing the user to see the appraisal generated by the system regarding the level of the performance or movement.
  • the feedback may also consist of a sound signal, a summer, speech synthesizer or equivalent.
  • the system comprises means for dividing the path of motion of the muscular exercise apparatus into sections and means for storing information regarding the time spent in different sections of the path. From the statistical elements thus obtained, a statistical model is generated.
  • the device measuring the movement is connected to a rotating main shaft of the muscular exercise apparatus.
  • the muscular exercise apparatus is preferably an apparatus for the exercise of the cervical and/or upper spinal muscles.
  • the means used to divide the path of movement into sections is a pulse detector.
  • the means for generating a statistical model and the means for performing a comparison are fitted in a computer system.
  • the advantages of the invention include simplicity of the measuring system; simple and cheap technical implementation requiring few components.
  • the system of the invention can be easily connected to existing muscular exercise apparatus without any major changes.
  • the invention also makes it possible to obtain immediate feedback regarding the level of the performance, so that the person doing the exercise can either interrupt the performance or change the parameters so as to make them more appropriate for him/herself.
  • possible problems associated with the locomotor system can be detected.
  • the average velocity and accuracy of a movement within a limited extent of mo- tion and with a limited load is analyzed.
  • the time derivatives thus obtained are analyzed by statistical means .
  • Fig. 1 presents a diagram representing a system according to the invention
  • Fig. 2a and 2b present examples of muscular exercise apparatus to which the invention can be ap- plied.
  • Fig. 3a and 3b present examples of statistical models according to the invention.
  • the diagram in Fig. 1 represents a system according to the invention.
  • the system is connected to a muscular exercise apparatus 1.
  • the muscular exercise apparatus 1 comprises a part resisting the movement.
  • a part resisting the movement means a part which moves in the muscular exercise apparatus 1 while the user is performing an exercise with the apparatus .
  • the exercise can also be performed with zero resistance or with a minimal resistance, in which case the function of the muscular exercise apparatus 1 is not to create a strain but primarily to guide the user towards performing a movement correctly in respect of its path.
  • the system comprises means 6 for measuring the smoothness of a velocity quantity.
  • the means 6 are connected to the part of the muscular exercise apparatus 1 which resists the movement, e.g.
  • the velocity quantity of the movement, the smoothness of which is measured is e.g. the velocity of the movement, in which case the smoothness measurement is obtained as an acceleration value.
  • the acceleration values are obtained as derivatives of velocity.
  • the samples obtained from the path of movement of the muscular exercise apparatus are stored using means 10, and a statistical model can be generated using means 7.
  • a statistical model can be generated using means 7.
  • the statistical model thus generated is compared with predetermined statistical models.
  • the predetermined statistical models have been generated on the basis of a large random sample of patients, thus creating different classes; for example, the magnitude of a functional disorder of the cervical spine can be defined by the aid of the classification.
  • feedback is given to the person doing the exercise or to a person making a diagnosis .
  • the feedback may consist of e.g. three different light signals implemented using LED ' s corresponding to the level of the performance according to the classification.
  • the system of the invention is partly implemented using a computer system 11.
  • the output of a pulse detector 6 is connected to the computer system 11 e.g. via a parallel port of the computer.
  • the com- puter converts the rectangular wave into a pulse defined with respect to time, collects the pulses into a file and generates a statistical model on the basis of the file.
  • the comparison with a predetermined statistical model and the feedback given on the basis of the comparison can also be implemented using a computer.
  • Fig. 2a and 2b present examples of muscular exercise apparatus in which the system of the invention can be incorporated.
  • Fig. 2a shows an apparatus, presented in Finnish patent application FI-980039, for the exercise and rehabilitation of the motional pattern of the cervical spine and/or the muscles around the cervical spine via a rotational exercise movement of the head.
  • the apparatus can be used to perform rotational exercise movements of the cervical spine in order to learn a correct three-dimensional motional pattern of the rotation of the cervical spine.
  • a pulse detector By attaching a pulse detector to the main shaft 12, it is possible to distinguish from the three-dimensional motion a movement rotating in one plane only, thus pro- ducing a pulse detector output describing the function of a more precisely defined group of muscles.
  • Fig. 2b presents an apparatus described in Finnish patent application FI-974645, which can be used to exercise and rehabilitate neck exten- sors by a flexion and extension movement of the neck.
  • Fig. 3a and 3b present examples of statistical models according to the invention, representing neck movements in the muscular exercise apparatus.
  • the x-axis describes the pulse duration while the y-axis represents the number of pulses, in other words, the figures present a histogram divided according to the pulse duration.
  • Fig. 3a shows a histogram with two sharp peaks, from which it can be seen that the movement has been smooth in both directions.
  • a smooth movement produces pulses of even length.
  • Such a movement is normal neck movement.
  • Fig. 3b represents a jerky movement of a neck suffering from disorders. It can be seen from the figure that the duration of the pulses is more evenly distributed, even into several peaks of different lengths.
  • the quantities that may be used for the comparison include zero point symmetry, peak sharpness, distribution width and absolute location of the peak. If there occurs a jerk in the other direction, then the histogram will show a dual -peak distribution.
  • the invention is not restricted to the examples of its embodiments described above, but many variations are possible within the scope of the inventive idea defined in the claims.

Abstract

L'invention concerne un procédé et un système destinés à analyser un mouvement réalisé avec un appareil d'exercice musculaire (1). A partir d'une grandeur de vitesse mesurée, on génère un modèle statistique décrivant son lissé, puis le modèle statistique est comparé à des modèles prédéterminés, et, sur la base de cette comparaison, on obtient un retour d'information sur la qualité du mouvement. Le système comprend des moyens (7) permettant, à partir de la grandeur de vitesse mesurée, de générer un modèle statistique décrivant le lissé de la grandeur de vitesse, des moyens (8) destinés à comparer le modèle statistique à des modèles prédéterminés, et des moyens (9) permettant, sur la base de cette comparaison, d'obtenir un retour d'information sur la qualité du mouvement.
PCT/FI2000/000014 2000-01-10 2000-01-10 Procede et systeme d'analyse de mouvement WO2001050958A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU21134/00A AU2113400A (en) 2000-01-10 2000-01-10 Method and system for analyzing a movement
PCT/FI2000/000014 WO2001050958A1 (fr) 2000-01-10 2000-01-10 Procede et systeme d'analyse de mouvement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FI2000/000014 WO2001050958A1 (fr) 2000-01-10 2000-01-10 Procede et systeme d'analyse de mouvement

Publications (1)

Publication Number Publication Date
WO2001050958A1 true WO2001050958A1 (fr) 2001-07-19

Family

ID=8555866

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2000/000014 WO2001050958A1 (fr) 2000-01-10 2000-01-10 Procede et systeme d'analyse de mouvement

Country Status (2)

Country Link
AU (1) AU2113400A (fr)
WO (1) WO2001050958A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002089923A1 (fr) * 2001-05-10 2002-11-14 Physiotech Aps Appareil de diagnostic et d'exercice de la region cervicale
US6908478B2 (en) 2001-12-05 2005-06-21 Cardiac Dimensions, Inc. Anchor and pull mitral valve device and method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4893808A (en) * 1988-01-26 1990-01-16 Mcintyre Donald R Exercise apparatus for the neck
WO1990011049A1 (fr) * 1989-03-23 1990-10-04 David Fitness & Medical Ltd Oy Procede de mesure de la fonctionnalite musculaire et systeme de mesure et d'exercice permettant d'effectuer des mesures de la fonctionnalite musculaire et des exercices musculaires
US5094249A (en) * 1990-04-16 1992-03-10 William S. Marras Apparatus for monitoring the motion of the lumbar spine
US5474086A (en) * 1992-07-07 1995-12-12 Chattanooga Group, Inc. Apparatus for monitoring the motion of the lumbar spine
WO1999034877A1 (fr) * 1997-12-30 1999-07-15 Dbc International Oy Appareil d'exercice et/ou de readaptation des extenseurs de la nuque
US5997440A (en) * 1997-09-29 1999-12-07 Hanoun; Reed Cervical muscle evaluation apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4893808A (en) * 1988-01-26 1990-01-16 Mcintyre Donald R Exercise apparatus for the neck
WO1990011049A1 (fr) * 1989-03-23 1990-10-04 David Fitness & Medical Ltd Oy Procede de mesure de la fonctionnalite musculaire et systeme de mesure et d'exercice permettant d'effectuer des mesures de la fonctionnalite musculaire et des exercices musculaires
US5094249A (en) * 1990-04-16 1992-03-10 William S. Marras Apparatus for monitoring the motion of the lumbar spine
US5474086A (en) * 1992-07-07 1995-12-12 Chattanooga Group, Inc. Apparatus for monitoring the motion of the lumbar spine
US5997440A (en) * 1997-09-29 1999-12-07 Hanoun; Reed Cervical muscle evaluation apparatus
WO1999034877A1 (fr) * 1997-12-30 1999-07-15 Dbc International Oy Appareil d'exercice et/ou de readaptation des extenseurs de la nuque

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002089923A1 (fr) * 2001-05-10 2002-11-14 Physiotech Aps Appareil de diagnostic et d'exercice de la region cervicale
US6908478B2 (en) 2001-12-05 2005-06-21 Cardiac Dimensions, Inc. Anchor and pull mitral valve device and method

Also Published As

Publication number Publication date
AU2113400A (en) 2001-07-24

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