Integrated portable device and method implementing an accelerometer for analyzing biomechanical parameters of a stride
DCFirst Claim
1. A device designed for analyzing the biomechanical parameters of the stride of a runner, comprising:
- a self-sufficient electric power source;
a triaxial accelerometer capable of supplying at least one sequence of acceleration data in at least the vertical direction whilst the runner travels a distance on a running course;
a chronograph;
a belt;
a display;
a digital processor programmed for calculating, during or at the end of the run, biomechanical parameters of the stride of said runner on the basis of said acceleration data, of said distance and of a duration counted by said chronograph, and for displaying said parameters on said display, wherein the biomechanical parameters of the stride comprises the vertical oscillation of the center of gravity of said runner between a lowest position and a highest vertical position of the center of gravity of said runner, and include the distance the center of gravity lowers and/or the distance the center of gravity elevates in a stride, and/or sum of the lowering of the center of gravity of said runner from a first highest vertical position to a second lowest vertical position and of the elevation of the center of gravity of said runner from the second lowest vertical position to the first highest vertical position, and wherein the biomechanical parameters are calculated at each stride, and wherein the digital processor is further programmed for calculating an average, per stride, of at least some calculated biomechanical parameters of the stride, wherein said lowering of said center of gravity is obtained as a function of maximum bearing force, of contact time and of the runner'"'"'s mass, wherein the maximum bearing force is multiplied by the square of the contact time and divided by the runner'"'"'s mass and wherein the function includes at least a constant.
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Abstract
An accelerometer analyzing biomechanical parameters of the stride of a runner, including: fastening a device on the torso of the runner that is electrically self-sufficient and includes a triaxial accelerometer, chronograph, digital processor and display; measuring a sequence of acceleration data in at least the vertical direction using the accelerometer, while the runner runs a certain distance along a running course; during or at the end of the course, having the processor calculate the biomechanical parameters of the stride, including the lowering of the center of gravity and/or the elevation of the center of gravity and/or the sum of the lowering and of the elevation of the center of gravity and/or the vertical mechanical work of the center of gravity of the runner, on the basis of the acceleration data, of the distance and of a period of time measured by the chronograph; and displaying the parameters on the display.
38 Citations
21 Claims
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1. A device designed for analyzing the biomechanical parameters of the stride of a runner, comprising:
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a self-sufficient electric power source; a triaxial accelerometer capable of supplying at least one sequence of acceleration data in at least the vertical direction whilst the runner travels a distance on a running course; a chronograph; a belt; a display; a digital processor programmed for calculating, during or at the end of the run, biomechanical parameters of the stride of said runner on the basis of said acceleration data, of said distance and of a duration counted by said chronograph, and for displaying said parameters on said display, wherein the biomechanical parameters of the stride comprises the vertical oscillation of the center of gravity of said runner between a lowest position and a highest vertical position of the center of gravity of said runner, and include the distance the center of gravity lowers and/or the distance the center of gravity elevates in a stride, and/or sum of the lowering of the center of gravity of said runner from a first highest vertical position to a second lowest vertical position and of the elevation of the center of gravity of said runner from the second lowest vertical position to the first highest vertical position, and wherein the biomechanical parameters are calculated at each stride, and wherein the digital processor is further programmed for calculating an average, per stride, of at least some calculated biomechanical parameters of the stride, wherein said lowering of said center of gravity is obtained as a function of maximum bearing force, of contact time and of the runner'"'"'s mass, wherein the maximum bearing force is multiplied by the square of the contact time and divided by the runner'"'"'s mass and wherein the function includes at least a constant. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 18)
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15. A method for analyzing the biomechanical parameters of the stride of a runner, using a device of which comprises:
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a self-sufficient electric power source; a triaxial accelerometer capable of supplying at least one sequence of acceleration data in at least the vertical direction whilst the runner travels a distance on a running course; a chronograph; a belt; a display; a digital processor; the method comprising the steps of, calculating, during or at the end of a run, biomechanical parameters of the stride of said runner on the basis of acceleration data, of distance and of a duration counted by said chronograph, and wherein the biomechanical parameters of the stride comprise the vertical oscillation of the center of gravity of said runner between a first lowest vertical position and a second highest vertical position, and include the distance the center of gravity lowers and/or the distance the center of gravity elevates in a stride, and/or sum of the lowering of the center of gravity of said runner from the second highest vertical position to the first lowest vertical position and of the elevation of the center of gravity of said runner from the first lowest vertical position to the second highest vertical position; and calculating an average, per stride, of at least some calculated biomechanical parameters of the stride, obtaining said lowering of said center of gravity as a function of maximum bearing force, of contact time and of the runner'"'"'s mass, wherein the maximum bearing force is multiplied by the square of the contact time and divided by the runner'"'"'s mass and wherein the function includes at least a constant. - View Dependent Claims (19)
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16. A device designed for analyzing the biomechanical parameters of the stride of a runner, comprising:
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a self-sufficient electric power source; a triaxial accelerometer capable of supplying at least one sequence of acceleration data in at least the vertical direction whilst the runner travels a distance on a running course; a chronograph; a belt; a display; a digital processor programmed for calculating, during or at the end of the run, biomechanical parameters of the stride of said runner on the basis of said acceleration data, of said distance and of a duration counted by said chronograph, and for displaying said parameters on said display, wherein the biomechanical parameters of the stride comprises a stiffness parameter based on the maximum force exerted by the ground on the foot and on the lowering of the center of gravity when this maximum force is exerted, and wherein the biomechanical parameters are calculated at each stride, wherein said lowering of said center of gravity is obtained as a function of maximum bearing force, of contact time and of the runner'"'"'s mass, wherein the maximum bearing force is multiplied by the square of the contact time and divided by the runner'"'"'s mass and wherein the function includes at least a constant, and wherein the digital processor is further programmed for calculating an average, per stride, of at least some calculated biomechanical parameters of the stride. - View Dependent Claims (20)
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17. A method for analyzing the biomechanical parameters of the stride of a runner, using a device of which comprises:
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a self-sufficient electric power source; a triaxial accelerometer capable of supplying at least one sequence of acceleration data in at least the vertical direction whilst the runner travels a distance on a running course; a chronograph; a belt; a display; a digital processor; the method comprising the steps of, calculating, during or at the end of a run, biomechanical parameters of the stride of said runner on the basis of acceleration data, of distance and of a duration counted by said chronograph, and wherein the biomechanical parameters of the stride comprise a stiffness parameter based on the maximum force exerted by the ground on the foot and on the lowering of the center of gravity when this maximum force is exerted; and calculating an average, per stride, of at least some calculated biomechanical parameters of the stride, obtaining said lowering of said center of gravity as a function of maximum bearing force, of contact time and of the runner'"'"'s mass, wherein the maximum bearing force is multiplied by the square of the contact time and divided by the runner'"'"'s mass and wherein the function includes at least a constant. - View Dependent Claims (21)
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Specification