Integrated portable device and method implementing an accelerometer for detecting asymmetries in a movement of a user
DCFirst Claim
1. A method for detecting asymmetries in a movement of a user, comprising:
- (a) fastening a device on the torso of said user, close to his/her center of gravity, said device being electrically self-sufficient and comprising a triaxial accelerometer for providing distinct acceleration sequence data along three distinct axis, and a digital processor, wherein the digital processor is configured to calculate, on the basis of acceleration data, a plurality of biomechanical parameters, said plurality of biomechanical parameters including;
a stride regularity index of an exercise determined on the basis of said acceleration data,wherein said stride regularity index is determined based on dispersion of a reactivity, and wherein the reactivity is determined based on flight time and contact time, and wherein flight time and contact time are determined on the basis of said acceleration data; and
a fatigue level indicator determined on the basis of said regularity index, and(b) measuring a sequence of acceleration data along at least a vertical direction using said accelerometer, while the user performs at least one exercise;
(c) during or at the end of this exercise, having said processor calculate, on the basis of said acceleration data, said plurality of biomechanical parameters which allow at least one asymmetry in the movements of the user to be determined.
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Abstract
System and method implementing an accelerometer (17) for detecting asymmetries in a movement of a user. The system includes a fastening a device (1) on the torso of the runner, close to his/her center of gravity (CG), the device being electrically self-sufficient and comprising a triaxial accelerometer (17) and a digital processor (19). The accelerometer is used to measure a sequence of acceleration data in at least the vertical direction (av), while the user performs at least one exercise. During or at the end of the exercise, having the processor calculate the biomechanical parameters enabling the detection of at least one asymmetry in a movement of the user, on the basis of the acceleration data.
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Citations
18 Claims
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1. A method for detecting asymmetries in a movement of a user, comprising:
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(a) fastening a device on the torso of said user, close to his/her center of gravity, said device being electrically self-sufficient and comprising a triaxial accelerometer for providing distinct acceleration sequence data along three distinct axis, and a digital processor, wherein the digital processor is configured to calculate, on the basis of acceleration data, a plurality of biomechanical parameters, said plurality of biomechanical parameters including; a stride regularity index of an exercise determined on the basis of said acceleration data, wherein said stride regularity index is determined based on dispersion of a reactivity, and wherein the reactivity is determined based on flight time and contact time, and wherein flight time and contact time are determined on the basis of said acceleration data; and a fatigue level indicator determined on the basis of said regularity index, and (b) measuring a sequence of acceleration data along at least a vertical direction using said accelerometer, while the user performs at least one exercise; (c) during or at the end of this exercise, having said processor calculate, on the basis of said acceleration data, said plurality of biomechanical parameters which allow at least one asymmetry in the movements of the user to be determined. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A non-transitory computer data carrier storing a computer program, comprising:
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digital processor for executing the computer program to calculate, during or at the end of at least one exercise performed by a user, on the basis of acceleration data measured along at least a vertical direction using an accelerometer, a plurality of biomechanical parameters which allow at least one asymmetry in a movement of the user to be determined, wherein said biomechanical parameters include; i) a stride regularity index of an exercise determined on the basis of said acceleration data, wherein said stride regularity index is determined based on dispersion of a reactivity, and wherein the reactivity is determined based on flight time and contact time, and wherein flight time and contact time are determined on the basis of said acceleration data; and ii) a fatigue level indicator determined on the basis of said regularity index, and wherein the digital processor is configured to calculate said plurality of biomechanical parameters.
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14. A device designed for detecting asymmetries in a movement of a user, comprising:
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a self-sufficient electric power source; a triaxial accelerometer for providing distinct acceleration sequence data along three distinct axis whilst the user performs at least one exercise; a digital processor programmed for calculating, during or at the end of said exercise, a plurality of biomechanical parameters enabling a detection of at least one asymmetry in a movement of said user, on the basis of said acceleration data, said biomechanical parameters including; i) a stride regularity index of an exercise determined on the basis of said acceleration data, wherein said stride regularity index is determined based on dispersion of a reactivity, and wherein the reactivity is determined based on flight time and contact time, and wherein flight time and contact time are determined on the basis of said acceleration data; and ii) a fatigue level indicator determined on the basis of said regularity index, and wherein the digital processor is configured to calculate said plurality of biomechanical parameters. - View Dependent Claims (15)
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16. A method for detecting asymmetries in a movement of a user, comprising:
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(a) fastening a device on the torso of said user, close to his/her center of gravity, said device being electrically self-sufficient and comprising a triaxial accelerometer for providing distinct acceleration sequence data along three distinct axis, and a digital processor; (b) measuring a sequence of acceleration data along at least a vertical direction using said accelerometer, while the user performs at least one exercise; (c) during or at the end of this exercise, having said processor calculate, on the basis of said acceleration data, a plurality of biomechanical parameters which allow at least one asymmetry in the movements of the user to be determined, wherein said biomechanical parameters includes;
a stride regularity index of the exercise determined on the basis of said acceleration data, wherein said stride regularity index is determined based on dispersion of a reactivity, and wherein the reactivity is determined based on flight time and contact time, and wherein flight time and contact time are determined on the basis of said acceleration data; and
a fatigue level indicator determined on the basis of said stride regularity index. - View Dependent Claims (17, 18)
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Specification