EP1377345A2 - Dynamic balance board - Google Patents

Dynamic balance board

Info

Publication number
EP1377345A2
EP1377345A2 EP02722400A EP02722400A EP1377345A2 EP 1377345 A2 EP1377345 A2 EP 1377345A2 EP 02722400 A EP02722400 A EP 02722400A EP 02722400 A EP02722400 A EP 02722400A EP 1377345 A2 EP1377345 A2 EP 1377345A2
Authority
EP
European Patent Office
Prior art keywords
dynamic balance
balance board
board according
top board
dome
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP02722400A
Other languages
German (de)
French (fr)
Other versions
EP1377345B1 (en
Inventor
Gillian Brydson
Daniel Rafferty
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
University of Glasgow
Glasgow Caledonian University
Original Assignee
University of Glasgow
Glasgow Caledonian University
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 University of Glasgow, Glasgow Caledonian University filed Critical University of Glasgow
Publication of EP1377345A2 publication Critical patent/EP1377345A2/en
Application granted granted Critical
Publication of EP1377345B1 publication Critical patent/EP1377345B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • A63B21/0004—Exercising devices moving as a whole during exercise
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B26/00—Exercising apparatus not covered by groups A63B1/00 - A63B25/00
    • A63B26/003—Exercising apparatus not covered by groups A63B1/00 - A63B25/00 for improving balance or equilibrium
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
    • A63B22/0025—Particular aspects relating to the orientation of movement paths of the limbs relative to the body; Relative relationship between the movements of the limbs
    • A63B2022/0033—Lower limbs performing together the same movement, e.g. on a single support element
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
    • A63B22/18—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with elements, i.e. platforms, having a circulating, nutating or rotating movement, generated by oscillating movement of the user, e.g. platforms wobbling on a centrally arranged spherical support
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2208/00—Characteristics or parameters related to the user or player
    • A63B2208/12—Characteristics or parameters related to the user or player specially adapted for children
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2220/00—Measuring of physical parameters relating to sporting activity
    • A63B2220/50—Force related parameters
    • A63B2220/51—Force

Definitions

  • Wobble or rocker style balance boards are commonly used by physiotherapists in the rehabilitation of patients with a variety of diagnoses and within a range of clinical specialisms. Such boards are purported to improve dynamic balance, range of movement, co- ordination, proprioception (joint position sense) and confidence. They comprise a non-flexing piece of plywood on a rocker base that provide approximately 10-20 degrees of tilt. If the range of motion over which this tilt is exhibited is 180 degrees then the board is referred to in the prior art as a rocker board. If such a range is 360 degrees then the board is refereed to as a wobble board, and as such, wobble boards offer a greater challenge to a patient.
  • Wobble and rocker boards are routinely used for patients with ankle and knee ligament injuries to improve a patient's proprioceptive ability. They also help increase the available range of movement of the ankle and foot so improving movement and a patient's perception of stiffness.
  • a third area where such devices are commonly employed is in helping patients with balance problems arising as a result of neurological, orthopaedic problems or normal ageing.
  • Such devices are suitable for use across the whole spectrum of patients. For example they may be employed in the rehabilitation of children or athletes as well as to improve independent mobility in the elderly.
  • Wobble and rocker boards are popular because they are cheap, portable easy to use and are understood by both clinicians and patients alike. They are designed to be used independently by patients and are easily graded so as to progress difficulty. However, the devices are limited when in comes to the provision of an objective measurement on a patient's progress. There is an increasing movement for physiotherapists to formally audit the outcome of their work with patients by showing what progress has been made. Although there are some balance monitor systems available on the market they do not directly measure performance in a manner familiar to the patient. Also such devices tend not to be portable and are considerably more expensive that traditional wobble or rocker boards.
  • a further object of an aspect of the present invention is to provide a balance board capable of producing dynamic balance measurements that is highly portable and cost effective to produce.
  • a dynamic balance board comprising a top board, a rocking means and one or more detection means, whereby the rocking means permits the oscillation of the top board about an eguilibnum position and the detection means provides output information regarding the angle of the top board relative to the equilibrium position.
  • the detection means provides output information regarding the rotation of the dynamic balance board relative to an equilibrium position
  • the output information of the detection means is binary, whereby the output is off when the top board is substantially horizontal and on when the top board rotates through a predetermined angle.
  • the predetermined angle is determined by the location of the detection means on the rocking means.
  • the rocking means comprises a dome.
  • the dome is substantially hemispherical.
  • the detection means comprises one or more force sensitive switches.
  • the force sensitive switches comprise active transducers mounted on the dome at predetermined locations, whereby when a force, greater than a critical magnitude, is applied to the transducer a resultant output voltage from the transducer is produced.
  • the transducers are mounted on the dome in a substantially radial manner.
  • transducers on different radii are located on the dome at predetermined latitudes, defined by the diameter of a horizontal chord of the dome, whereby when the top board tilts through the predetermined angle a force applied to the transducer is greater than the critical magnitude.
  • the output signals from the transducers are transmitted to a recording and processing means that provides a time dependent profile of the angle of the top board.
  • the recording and processing means provides a time dependent profile of the rotational movement of the dynamic balance board.
  • the dynamic balance board comprises a biofeedback device capable of relaying information regarding the user to the recording and processing means.
  • the recording and processing means is a microcomputer.
  • the recording and processing means is a computer.
  • Figure 1 illustrates a side elevation of a dynamic balance board
  • Figure 2 illustrates a bottom elevation of a rocker base of the dynamic balance board of Figure 1;
  • Figure 3 illustrates a top elevation of a force sensitive switch of the dynamic balance board of Figure 1;
  • Figure 4 illustrates a side elevation of the force sensitive switch of the dynamic balance board of Figure 1;
  • Figure 5 illustrates an alternative embodiment of the rocker base of the dynamic balance board of Figure 1.
  • a dynamic balance board 1 is generally depicted and can be seen to comprise a top board 2 and a rocker base 3 m the shape of a hemisphere.
  • FIG 2 presents a bottom view of the rocker base 3.
  • the force sensitive switches 4 are mounted on the rocker base 3.
  • Figure 3 and Figure 4 show further detail of the force sensitive switches 4.
  • Each switch 4 can be seen to comprise an active transducer 5 and an electrical connector 6.
  • the force sensitive switches 4 operate in a binary mode. When no external force is applied to the active transducer 5 the force sensitive switch 4 remains in an off position. However, the application of a force to the active transducer 5, greater than a critical magnitude, activates the force sensitive switch .
  • each force sensitive switch 4 is connected to an electronic comparator (not shown) that produce TTL (transistor-transistor logic) pulses that form the digital input for an electronic display (not shown) .
  • TTL transistor-transistor logic
  • the period of time that any force sensitive switch 4 is activated can then be calculated, hence the period of time that a patient spends at 10 degrees or more from the horizontal equilibrium position can be recorded.
  • the time and direction of tilt can then be expressed as a percentage of the overall test duration, therefore producing a dynamic measurement of a patient's ability to balance the board 1.
  • the rocker base 3 is populated with force sensitive switches 4 located at two separate diameters on the rocker base 3.
  • the mounting of the force sensitive switches 4 at a second diameter provides means for taking secondary angular measurements of the tilt angle of the top board, as described previously.
  • an additional signal is produced by the force sensitive switches corresponding to what diameter the switch is located. Therefore, employment of this second embodiment provides greater information on the angle of tilt and the time spent at these angles.
  • Additional force sensitive switches 4 can easily be incorporated on the rocker base 3. These additional switches 4 would increases the accuracy of the dynamic balance profile obtained since the discrete directions in which the angle of tilt is measured would increase. Therefore, the dynamic balance board 1 could readily be employed to provide information regarding rotational movement as well as that relating to angular tilt.
  • a yet further embodiment includes the incorporation of biofeedback devices to the dynamic balance board in order to allow patients to self-monitor their own progress. Such direct feedback has been shown to improve patient recovery as motivation levels to continue with exercise are increased.
  • An advantage of the present invention is that it provides a balance board that incorporates a means for providing objective measurements on a user's dynamic balance.
  • a second advantage of the present invention is that it is small and portable, not requiring a separate computer to record data, thereby making it easy for user's to deploy and store.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biophysics (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Slot Machines And Peripheral Devices (AREA)
  • Pinball Game Machines (AREA)
  • Switches With Compound Operations (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

A dynamic balance board is described that incorporates a means for providing objective measurements on a user's dynamic balance. The balance board comprises a top board, a rocker base and a plurality of force sensitive transducers strategically positioned on the rocker base. When a user stands on the top board the rocker base permits the oscillation of the top board about an equilibrium position. The force sensitive switches then provide output information regarding the angle of the top board and the rotational movement of the balance board relative to the equilibrium position. By monitoring the output information the dynamic balance board provides an objective measurement of the user's ability to balance on the top board.

Description

Dynamic Balance Board
The present invention relates to the field of balance boards. In particular, it relates to a balance board for the automated measurement of dynamic balance.
Wobble or rocker style balance boards are commonly used by physiotherapists in the rehabilitation of patients with a variety of diagnoses and within a range of clinical specialisms. Such boards are purported to improve dynamic balance, range of movement, co- ordination, proprioception (joint position sense) and confidence. They comprise a non-flexing piece of plywood on a rocker base that provide approximately 10-20 degrees of tilt. If the range of motion over which this tilt is exhibited is 180 degrees then the board is referred to in the prior art as a rocker board. If such a range is 360 degrees then the board is refereed to as a wobble board, and as such, wobble boards offer a greater challenge to a patient.
Wobble and rocker boards are routinely used for patients with ankle and knee ligament injuries to improve a patient's proprioceptive ability. They also help increase the available range of movement of the ankle and foot so improving movement and a patient's perception of stiffness. A third area where such devices are commonly employed is in helping patients with balance problems arising as a result of neurological, orthopaedic problems or normal ageing.
Such devices are suitable for use across the whole spectrum of patients. For example they may be employed in the rehabilitation of children or athletes as well as to improve independent mobility in the elderly.
Wobble and rocker boards are popular because they are cheap, portable easy to use and are understood by both clinicians and patients alike. They are designed to be used independently by patients and are easily graded so as to progress difficulty. However, the devices are limited when in comes to the provision of an objective measurement on a patient's progress. There is an increasing movement for physiotherapists to formally audit the outcome of their work with patients by showing what progress has been made. Although there are some balance monitor systems available on the market they do not directly measure performance in a manner familiar to the patient. Also such devices tend not to be portable and are considerably more expensive that traditional wobble or rocker boards.
It is an ob ect of an aspect of the present invention to provide a balance board that incorporates a means for providing objective measurements on a user's dynamic balance, thereby permitting an objective measurement of progress to be made. A further object of an aspect of the present invention is to provide a balance board capable of producing dynamic balance measurements that is highly portable and cost effective to produce.
According to the present invention there is provided a dynamic balance board comprising a top board, a rocking means and one or more detection means, whereby the rocking means permits the oscillation of the top board about an eguilibnum position and the detection means provides output information regarding the angle of the top board relative to the equilibrium position.
Preferably the detection means provides output information regarding the rotation of the dynamic balance board relative to an equilibrium position
Most preferably the output information of the detection means is binary, whereby the output is off when the top board is substantially horizontal and on when the top board rotates through a predetermined angle.
Preferably the predetermined angle is determined by the location of the detection means on the rocking means.
Preferably the rocking means comprises a dome.
Preferably the dome is substantially hemispherical.
Preferably the detection means comprises one or more force sensitive switches. Preferably the force sensitive switches comprise active transducers mounted on the dome at predetermined locations, whereby when a force, greater than a critical magnitude, is applied to the transducer a resultant output voltage from the transducer is produced.
Preferably the transducers are mounted on the dome in a substantially radial manner.
Most preferably transducers on different radii are located on the dome at predetermined latitudes, defined by the diameter of a horizontal chord of the dome, whereby when the top board tilts through the predetermined angle a force applied to the transducer is greater than the critical magnitude.
Preferably the output signals from the transducers are transmitted to a recording and processing means that provides a time dependent profile of the angle of the top board. Optionally the recording and processing means provides a time dependent profile of the rotational movement of the dynamic balance board.
Preferably the dynamic balance board comprises a biofeedback device capable of relaying information regarding the user to the recording and processing means.
Optionally the recording and processing means is a microcomputer. Alternatively the recording and processing means is a computer. Embodiments of the present invention will now be described, by way of example only, with reference to the accompanying drawings, in which:
Figure 1 illustrates a side elevation of a dynamic balance board;
Figure 2 illustrates a bottom elevation of a rocker base of the dynamic balance board of Figure 1;
Figure 3 illustrates a top elevation of a force sensitive switch of the dynamic balance board of Figure 1;
Figure 4 illustrates a side elevation of the force sensitive switch of the dynamic balance board of Figure 1; and
Figure 5 illustrates an alternative embodiment of the rocker base of the dynamic balance board of Figure 1.
Referring initially to Figure 1 a dynamic balance board 1 is generally depicted and can be seen to comprise a top board 2 and a rocker base 3 m the shape of a hemisphere.
Figure 2 presents a bottom view of the rocker base 3. As can be observed the force sensitive switches 4 are mounted on the rocker base 3. Figure 3 and Figure 4 show further detail of the force sensitive switches 4. Each switch 4 can be seen to comprise an active transducer 5 and an electrical connector 6. The force sensitive switches 4 operate in a binary mode. When no external force is applied to the active transducer 5 the force sensitive switch 4 remains in an off position. However, the application of a force to the active transducer 5, greater than a critical magnitude, activates the force sensitive switch .
With the force sensitive switches 4 mounted on the rocker base 3 they operate in conjunction with the angle of the top board 2. When the top board 2 is substantially horizontal the force sensitive switches 4 are all off and so provide no output. However, when the top board 2 tilts more than an angle as determined by the location of the force active switches on the rocker base (for example 10 degrees relative to horizontal) a force of sufficient magnitude is applied to the active transducer 5 so activating the switch 4.
The output from each force sensitive switch 4 is connected to an electronic comparator (not shown) that produce TTL (transistor-transistor logic) pulses that form the digital input for an electronic display (not shown) . The period of time that any force sensitive switch 4 is activated can then be calculated, hence the period of time that a patient spends at 10 degrees or more from the horizontal equilibrium position can be recorded. The time and direction of tilt can then be expressed as a percentage of the overall test duration, therefore producing a dynamic measurement of a patient's ability to balance the board 1.
In an alternative embodiment, shown in Figure 5, the rocker base 3 is populated with force sensitive switches 4 located at two separate diameters on the rocker base 3. The mounting of the force sensitive switches 4 at a second diameter provides means for taking secondary angular measurements of the tilt angle of the top board, as described previously. However, in this embodiment an additional signal is produced by the force sensitive switches corresponding to what diameter the switch is located. Therefore, employment of this second embodiment provides greater information on the angle of tilt and the time spent at these angles.
Additional force sensitive switches 4 can easily be incorporated on the rocker base 3. These additional switches 4 would increases the accuracy of the dynamic balance profile obtained since the discrete directions in which the angle of tilt is measured would increase. Therefore, the dynamic balance board 1 could readily be employed to provide information regarding rotational movement as well as that relating to angular tilt.
A yet further embodiment includes the incorporation of biofeedback devices to the dynamic balance board in order to allow patients to self-monitor their own progress. Such direct feedback has been shown to improve patient recovery as motivation levels to continue with exercise are increased.
An advantage of the present invention is that it provides a balance board that incorporates a means for providing objective measurements on a user's dynamic balance.
A second advantage of the present invention is that it is small and portable, not requiring a separate computer to record data, thereby making it easy for user's to deploy and store.
Further modifications and improvements may be incorporated without departing from the scope of the invention as defined by the appended Claims.

Claims

Claims
1. A dynamic balance board comprising a top board, a rocking means and one or more detection means, whereby the rocking means permits the oscillation of the top board about an equilibrium position and the detection means provides output information regarding the angle of the top board relative to the equilibrium position.
2. A dynamic balance board according to Claim 1 wherein the detection means provides output information regarding the rotation of the dynamic balance relative to an equilibrium position
3. A dynamic balance board according to Claim 1 or Claim 2 wherein the output information of the detection means is binary, such that the output is off when the top board is substantially horizontal and on when the top board rotates through a predetermined angle.
4. A dynamic balance board according to Claim 3 wherein the predetermined angle is determined by the location of the detection means on the rocking means.
5. A dynamic balance board according to any of the preceding claims wherein the rocking means comprises a dome.
6. A dynamic balance board according to Claim 5 wherein the dome is substantially hemispherical.
7. A dynamic balance board according to any of the preceding claims wherein the detection means comprises one or more force sensitive switches.
8. A dynamic balance board according to Claim 7 wherein the force sensitive switches comprise transducers mounted on the dome at predetermined locations, whereby when a force, greater than a critical magnitude, is applied to the transducer a resultant output voltage from the transducer is produced.
9. A dynamic balance board according to Claim 8 wherein the transducers are mounted on the dome in a substantially radial manner.
10. A dynamic balance board according to Claim 8 or Claim 9 wherein transducers on different radii are located on the dome at predetermined latitudes, defined by the diameter of a horizontal chord of the dome, whereby when the top board tilts through the predetermined angle a force applied to the transducer is greater than the critical magnitude.
11. A dynamic balance board according to Claims 8 - 10 wherein the output signals from the transducers are transmitted to a recording and processing means that provides a time dependent profile of the angle of the top board.
12. A dynamic balance board according to Claims 8 - 10 wherein the output signals from the transducers are transmitted to the recording and processing means that provides a time dependent profile of the rotational movement of the dynamic balance board.
13. A dynamic balance board according to any of the preceding claims comprising a biofeedback device capable of relaying information regarding the user to the recording and processing means.
14. A dynamic balance board according to Claims 11 - 13 wherein the recording and processing means is a microcomputer.
15. A dynamic balance board according to Claims 11 - 13 wherein the recording and processing means is a computer.
EP02722400A 2001-04-04 2002-04-03 Dynamic balance board Expired - Lifetime EP1377345B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB0108421 2001-04-04
GBGB0108421.9A GB0108421D0 (en) 2001-04-04 2001-04-04 Dynamic balance board
PCT/GB2002/001325 WO2002081033A2 (en) 2001-04-04 2002-04-03 Dynamic balance board

Publications (2)

Publication Number Publication Date
EP1377345A2 true EP1377345A2 (en) 2004-01-07
EP1377345B1 EP1377345B1 (en) 2004-09-01

Family

ID=9912225

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02722400A Expired - Lifetime EP1377345B1 (en) 2001-04-04 2002-04-03 Dynamic balance board

Country Status (9)

Country Link
US (1) US20040198573A1 (en)
EP (1) EP1377345B1 (en)
AT (1) ATE274978T1 (en)
AU (1) AU2002253282B2 (en)
CA (1) CA2443033A1 (en)
DE (1) DE60201130T2 (en)
ES (1) ES2230485T3 (en)
GB (1) GB0108421D0 (en)
WO (1) WO2002081033A2 (en)

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Also Published As

Publication number Publication date
DE60201130D1 (en) 2004-10-07
WO2002081033A3 (en) 2002-11-21
ES2230485T3 (en) 2005-05-01
EP1377345B1 (en) 2004-09-01
WO2002081033A2 (en) 2002-10-17
AU2002253282B2 (en) 2007-03-29
DE60201130T2 (en) 2005-09-22
CA2443033A1 (en) 2002-10-17
US20040198573A1 (en) 2004-10-07
ATE274978T1 (en) 2004-09-15
GB0108421D0 (en) 2001-05-23

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