JP6665836B2 - Golf club fitting system, information processing apparatus and method - Google Patents

Description

  The present technology relates to a golf club fitting system, an information processing device, and a method.

  It is well known that the head speed is increased by the bending (flexure) of a shaft in a golf swing. For example, Patent Document 1 discloses a part of the head speed measured immediately before the impact of the "flexure speed". There is a description to the effect that the head speed is added by the deflection of the shaft.

JP 2006-255303 A

  When a golfer trial-hits a golf club for a test hit and selects a golf club suitable for the golfer, the head speed has been measured using a camera-type measuring instrument or the like. Further, the deflection speed is calculated by using a strain sensor or the like. Patent Document 1 describes a deflection speed.

  However, there has not been a viewpoint of capturing the increment of the deflection speed as a ratio to the head speed and using the ratio for the fitting of a golf club.

  In view of these circumstances, an object of the present invention is to enable selection of a golf club suitable for each golfer.

One embodiment of the present invention that achieves the above object is a golf club fitting system including a golf club and an information processing device.
The golf club includes a grip, a shaft, and a head.
The information processing device includes a receiving unit, a control unit, and a display unit.
The receiving unit receives at least two of the following three.
First speed information relating to the speed of the grip portion when the golf club swings;
Second speed information relating to the speed of the head unit at the time of the swing;
Third speed information relating to the moving speed of the head portion caused by bending of the shaft portion during the swing.
The control unit calculates speed information excluding the received speed information among the first to third speed information based on the received at least two speed information.
The control unit generates display information for a golf club fitting using a relationship among the first speed information, the second speed information, and the third speed information as a parameter.
The display unit displays and outputs the display information.

Another embodiment of the present invention that achieves the above object is an information processing device including a communication unit and a control unit.
The receiving unit receives at least two of the following three.
First speed information relating to the speed of the grip portion of the golf club during a swing.
Second speed information relating to the speed of the head of the golf club during the swing;
Third speed information relating to the moving speed of the head portion caused by bending of the shaft portion of the golf club at the time of the swing;
The control unit calculates speed information excluding the received speed information among the first to third speed information based on the received at least two speed information.
The control unit generates display information for fitting a golf club using a relationship among the first speed information, the second speed information, and the third speed information as a parameter.

  In order to solve the problem of enabling the selection of a shaft suitable for each golfer, the inventors of the present invention have conducted various trial and error, and as a result, calculated the shaft and the angular velocity of the grip portion as a rigid body. The relationship between the speed of the head (swing speed), the speed of the head due to the bending of the shaft (increment of the head speed caused by the bending), and the speed of the head (head speed) It has been found that the above problem can be solved by using as a parameter. That is, according to the above configuration, a golf club suitable for each golfer can be selected.

  The control unit may generate the display information including an illustration of a ratio of the speed according to the third speed information to the speed according to the first speed information.

  According to the above configuration, the ratio of the increase in the head speed caused by the bending to the speed of the swing can be illustrated, so that a fitter or a golfer can select an appropriate golf club.

  The control unit may generate the display information including an illustration of a ratio of the speed according to the third speed information to the speed according to the second speed information.

  According to the above configuration, the ratio of the increment of the head speed caused by the bending to the head speed can be illustrated, so that a fitter or a golfer can select an appropriate golf club.

  The control unit may include, on a graph in which the first speed information and the third speed information are arranged on two axes, a speed related to the first speed information and a speed related to the third speed information during the swing. The above display information in which coordinates having velocity as a component may be plotted may be generated.

  According to the above configuration, the relationship between the swing speed and the increase in the head speed caused by the bending becomes clear by being plotted on a two-dimensional graph, so that a fitter or a golfer can select an appropriate shaft. .

  The control unit may include, on a graph in which the second speed information and the third speed information are arranged on two axes, a speed related to the second speed information and a speed related to the third speed information during the swing. The above display information in which coordinates having velocity as a component may be plotted may be generated.

  The control unit may include, on a graph in which the first speed information and the second speed information are arranged on two axes, a speed related to the first speed information and a speed related to the second speed information during the swing. The above display information in which coordinates having velocity as a component may be plotted may be generated.

  The control unit is configured to control the third second speed information of the specific second golfer at the time of the swing on a frequency distribution of the ratio of the third speed information to the second speed information at the time of the swing of the plurality of first golfers. The display information indicating a position where the ratio of the speed information to the second speed information is applicable may be generated.

  The control unit is configured to control the third speed information of a specific second golfer at the time of the swing on a frequency distribution of a ratio of the third speed information to the first speed information at the time of a swing of a plurality of first golfers. The display information indicating a position where the ratio of the speed information to the first speed information is applicable may be generated.

Another embodiment of the present invention that achieves the above object is an information processing method including a receiving step, a calculating step, and a display information generating step.
The receiving step receives at least two of the following three.
First speed information relating to the speed of the grip portion of the golf club during a swing.
Second speed information relating to the speed of the head of the golf club during the swing;
Third speed information relating to the moving speed of the head portion caused by bending of the shaft portion of the golf club at the time of the swing;
In the calculating step, speed information other than the received speed information among the first to third speed information is calculated based on the received at least two speed information.
In the display information generating step, display information for fitting a golf club using a relationship among the first speed information, the second speed information, and the third speed information as a parameter is generated.

  As described above, according to the present invention, it is possible to select a golf club suitable for each golfer.

It is a figure showing the utilization mode of the fitting support system concerning one embodiment of the present invention. It is a figure showing the example of composition of the golf club concerning the above-mentioned embodiment. It is a figure showing the example of composition of the information processor concerning the above-mentioned embodiment. It is a figure for explaining the speed of the golf club in the above-mentioned embodiment. FIG. 8 is a diagram for explaining calculation of an increase in head speed caused by bending of a shaft in the embodiment. It is a flowchart which shows an example of the processing procedure of the information processing apparatus which concerns on the said embodiment. It is a figure showing an example of display information in the above-mentioned embodiment. It is a figure showing an example of display information in the above-mentioned embodiment. It is a figure showing an example of display information in the above-mentioned embodiment. It is a figure showing an example of display information in the above-mentioned embodiment. FIG. 11 is a diagram illustrating a comparative example with respect to FIG. 10. It is a figure showing an example of display information in the above-mentioned embodiment. It is a figure showing an example of display information in the above-mentioned embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[System configuration]
The configuration of the system according to the present embodiment will be described with reference to FIGS. 1, 2, and 3. FIG.

  FIG. 1 is an explanatory diagram showing a use situation of a fitting support system 1 for supporting selection (fitting) of a golf club suitable for an individual golfer. Since the fitting support system 1 is a computer system used for fitting the golf club 10, it can be called a "golf club fitting system".

  As shown in FIG. 1, the fitting support system 1 includes a golf club 10, an information processing device 20, and a camera-type measuring device 30. FIG. 2 is a diagram illustrating a configuration example of the golf club 10, and FIG. 3 is a diagram illustrating a configuration example of the information processing device 20. For convenience of explanation, as shown in FIG. 1, the vertical direction is a z-axis, the hitting direction of the ball BL is an x-axis, and an axis orthogonal to the x-axis and the z-axis is a y-axis. In addition to the x, y, and z axes, as shown in FIG. 2, the axis of the golf club 10 is the z 'axis, the direction in which the head 11 projects from the central axis is the y' axis, and the y 'axis is the z axis. The axis orthogonal to the 'axis is the x' axis.

  As shown in FIGS. 1 and 2, the golf club 10 has a head 11, a grip 13, and a shaft 12 to which both ends of the head 11 and the grip 13 are attached. A plurality of strain sensors 101 for evaluating the bending of the shaft 12 are attached to the surface of the shaft 12. When the golfer GF hits the ball BL with the golf club 10, the strain sensor 101 measures the strain of each part corresponding to the bending of the shaft 12. Further, a swing speed measuring sensor 131 for measuring acceleration and angular velocity is attached to the grip 13.

  A detachable or non-detachable grip end module 132 is attached to an end (grip end) of the grip 13 opposite to the head 11. The grip end module 132 functions as a wireless communication unit, and transmits the strain measurement data measured by the strain sensor 101, the acceleration and the angular velocity measured by the swing speed measurement sensor 131 to the control terminal 20 by wireless communication.

  The camera-type measuring device 30 is an example of a measuring unit that optically measures the speed of the head 11. The measurement by the camera-type measuring device 30 is performed by a method such as imaging the golf club 10 at least twice immediately before the impact of the shot by the golfer GF and optically measuring the moving distance of the head 11. The speed of the head 11 measured by the camera-type measuring device 30 is transmitted to the information processing device 20 by wire or wireless communication. Note that the camera-type measuring device 30 may perform processing up to image capturing, and the information processing device 20 may perform image analysis and measurement of the moving distance of the head 11. Hereinafter, the speed of the head 11 optically measured by the camera-type measuring device 30 is referred to as “head speed”.

  The information processing device 20 is a tablet terminal device having software for implementing the fitting support system 1 (hereinafter, also referred to as “fitting software”). By executing the fitting software in the tablet terminal device, the tablet terminal device performs information processing as described below.

  FIG. 3 is a diagram illustrating a hardware configuration of the information processing apparatus 20. As shown in FIG. 1, the information processing apparatus 20 includes a CPU (Central Processing Unit) 21, a ROM (Read Only Memory) 23, a RAM (Random Access Memory) 24, an input / output interface 26, and a bus connecting these to each other. 25.

  The CPU 21 appropriately accesses the RAM 24 and the like as necessary, and performs overall control of the entire blocks of the information processing device 20 while performing various arithmetic processes. The ROM 23 is a non-volatile memory in which an OS to be executed by the CPU 21 and firmware such as programs and various parameters are fixedly stored. The RAM 24 is used as a work area of the CPU 21 and temporarily stores an OS, various applications being executed, and various data being processed.

  The display unit 22, the operation reception unit 27, the storage unit 28, the communication unit 29, and the like are connected to the input / output interface 26. The display unit 22 is a display device using, for example, an LCD (Liquid Crystal Display), an OELD (Organic Electro-Luminescence Display), a CRT (Cathode Ray Tube), or the like. The operation receiving unit 27 is, for example, a pointing device such as a mouse, a keyboard, a touch panel, and other input devices. When the operation receiving unit 27 is a touch panel, the touch panel can be integrated with the display unit 22.

  The storage unit 28 is a nonvolatile memory such as a hard disk drive (HDD), a solid state drive (SSD), and other solid-state memories. The storage unit 28 stores the OS, various applications, and various data. As described above, the storage unit 28 stores fitting software, which is read and executed by the CPU 21 to execute predetermined information processing. Note that the fitting software is not limited to this, and may be provided by SAAS (Software as a Service). The storage unit 28 also stores a knowledge database 281 in which past information on swings is accumulated.

  The communication unit 29 is various modules for wireless communication such as a NIC (Network Interface Card) and a wireless LAN. The communication unit 29 performs communication processing with the grip end module 132 of the golf club 10 and also receives various information. The communication unit 29 also establishes communication with the camera-type measuring device 30, and transmits and receives information.

  The information processing device 20 receives the strain measurement data measured by the strain sensor 101, the acceleration and angular speed measured by the swing speed measurement sensor 131, and the head speed measured by the camera-type measuring device 30. The received strain measurement data is used to calculate an increase in head speed caused by bending of the shaft 12. The received acceleration and angular velocity are used to measure the swing speed of the golf club 10 (hereinafter, referred to as “swing speed”).

  The information processing device 20 illustrates the swing characteristics of the golfer GF based on the input information, and the fitter grasps the swing characteristics and the like of the golfer GF with reference to the information to provide a fitting service. Note that the information processing device 20 is a terminal used to support the fitting, and thus can be referred to as a fitting support terminal. Of course, the information processing device 20 is not limited to the tablet terminal device, and may be, for example, a notebook PC, or may be a stationary PC and a display device connected thereto.

[Description of measurement or calculation speed]
The speed of the golf club 10 measured or calculated in the present embodiment will be described with reference to FIG. The “head speed” which is the moving speed of the head 11 in the xyz space can be divided into two. The first one is caused by the golfer GF's swing itself, that is, “swing speed”. The second is caused by bending of the shaft 12. Assuming that the head speed is V2, the swing speed is V1, and the increment of the head speed caused by the bending of the shaft 12 is V3, the relationship of V2 = V1 + V3 holds (see FIG. 4).

  The swing speed V1 can be calculated based on the measurement value of the swing speed measurement sensor 131. As described above, the swing speed measurement sensor 131 is configured to include the acceleration sensor and the angular speed sensor. From the measured values, the angular speed ωr of the rotation due to the swing and the translation (the movement in the x-axis direction) Vt of the swing are obtained. Speed can be calculated. By setting the club length to L, the swing speed V1 can be calculated from (L × ωr + Vt).

  The head speed V2 can be measured by the camera-type measuring device 30. As described above, the camera-type measuring device 30 measures the moving distance of the head 11 in the x-axis direction by imaging the golf club 10 at least twice immediately before the impact, and thereby can calculate the speed.

  The head speed increment V3 caused by the bending of the shaft 12 can be calculated based on the measurement value of the strain sensor 101. As shown in FIG. 4, the golf club 10 is deformed by an external force applied by a golfer GF during a swing such as hitting a ball BL. The deflection amount of the head 11 is calculated using the strain measurement data obtained from the strain sensor 101. The plurality of strain sensors 101 are configured to output, for example, strain measurement data 1000 times (1000 Hz) per second. The strain measurement data temporarily stored in the golf club 10 is sequentially or collectively transmitted to the information processing device 20 by wireless communication.

  The communication unit 29 receives strain measurement data at each point on the shaft 12 to which the strain sensor 101 is attached. The CPU 21 estimates the curvature distribution of the shaft 12 based on the received measurement data. The curvature distribution of the shaft 12 is estimated by interpolating the curvature at a point between the mounting positions of the strain gauge 101. Assuming that the radius of curvature is ρ, the curvature is obtained by 1 / ρ = ε / r. Here, ε is distortion (measured data or interpolated value), and r is the radius of the shaft 12.

  By integrating the curvature at each point connected along the z 'axis, the deflection angle at each point can be calculated. Since the deflection angle is sufficiently small, it can be regarded as a cantilever, and by further integrating the deflection angle, an approximate value of the deflection amount at each point can be obtained.

  As described above, the CPU 21 calculates the amount of deflection at each point connected along the z 'axis. Since the strain measurement data is linked in time series as described above, the deflection amount is calculated at each point on the shaft 12 at each moment during measurement.

  FIG. 5 schematically shows deformation of the shaft 12 at times t1 to t4. FIG. 5 shows the deflection amount D (a value calculated based on the curvature of the contact point between the head 11 and the shaft 12) of the portion close to the head 11 among the deflection amounts D (t, z ') of the shaft 12. . The head speed increment V3 caused by the bending of the shaft 12 from time t1 to t2 can be calculated by (D (t2) -D (t1)) / (t2-t1).

  Assuming that t1 and t2 are the moments of impact in the above formula, an increment V3 of the head speed caused by bending of the shaft 12 at the moment of impact is calculated. Further, before and after the moment of impact, the x 'axis may be regarded as substantially overlapping the x axis, so that V2 = V1 + V3 also holds.

  As described above, the information processing apparatus 20 can measure the speeds V1, V2, and V3 based on the value measured by the sensor, but obtains any two speeds from the relationship of “V2 = V1 + V3”. If so, the remaining third can be calculated.

  Hereinafter, the value measured by the sensor for calculating the speed V1 or the speed V1 itself is referred to as “first speed information”. Similarly, a value measured by a sensor for calculating the speed V2 or the speed V2 itself is referred to as “second speed information”. Similarly, a value measured by a sensor for calculating the speed V3 or the speed V3 itself is referred to as “third speed information”.

[Operation of information processing device]
Next, information processing of the information processing apparatus 20 will be described with reference to the flowchart of FIG. The execution entity of each block in the flowchart of FIG. 6 is the CPU 21 unless otherwise specified. First, the first to third speed information is input to the information processing device 20 (step 101). However, input of all three pieces of speed information is not essential, and at least two pieces of speed information may be used.

  Next, the CPU 21 calculates the speeds V1, V2, and V3 using the speed information input in Step 101 (Step 102). In the calculation, the above-described relationship of V2 = V1 + V3 may be used.

  Next, the CPU 21 calculates V3 / V2 (step 103). Here, the CPU 21 calculates the contribution rate of the increase in the head speed caused by the bending of the shaft 12 due to the swing to the overall head speed. The contribution ratio and the ratio of the increase in head speed serve as indices at the time of fitting. Further, the CPU 21 may calculate V3 / V1.

  Next, the CPU 21 generates display information based on the information on the swing of the golfer GF calculated in steps 102 and 103 and the knowledge database 281 stored in the storage unit 28 (step 104). Further, the generated display information is output to the display unit 22 (Step 105).

[Display information for shaft fitting]
Hereinafter, display information for fitting a golf club generated by the CPU 21 in step 104 of FIG. 6 will be described. The display information generated by the information processing device 20 includes information obtained by visualizing two correlations by arranging two of V1, V2, and V3 on two axes. Examples are shown in FIG. 7, FIG. 8, and FIG.

  FIG. 7 plots V2 and V3, FIG. 8 plots V1 and V2, and FIG. 9 plots V3 and V1 on two axes, respectively, and records the records of the swings of many golfers acquired from the knowledge database 281. The information processing device 20 further plots points V1, V2, and V3 obtained from the swing of the golfer GF in these figures. In this way, by decomposing the head speed into elements and performing two-dimensional mapping, the fitter and the golfer GF can easily grasp the swing characteristics of the golfer GF, and an appropriate shaft selection can be made. Will be possible.

  Further, the information processing apparatus 20 determines the quantitative relationship between V1, V2, and V3, for example, the contribution rate (ratio) of the head speed increment V3 caused by the bending of the shaft 12 due to the swing to the overall head speed (V2), The ratio of the increment V3 of the head speed caused by the bending of the shaft 12 to the swing speed V1 is shown in FIG. An example is shown in FIG.

  In FIG. 10, a line is added to the graph of FIG. 9 so that V3 / V1 becomes a predetermined value (2%, 6%, 10%, 14%) in 100%. According to FIG. 10, it is possible to see how much the ratio of V3 to the swing speed V1 is. With respect to the input (V1) of the head speed, it is possible to know how much the output has increased, and to know how much the head speed has increased due to the bending of the shaft 12, a person who has a large / small person with a head speed V2. You can compare with the same criteria. Therefore, when the swing of the golfer GF is plotted on the graph of FIG. 10, the fitter or the golfer GF has information such as what kind of characteristics the swing has compared to the swings of other golfers. Can be easily known.

  FIG. 11 shows a comparative example with respect to FIG. As shown in the drawing, when a line is drawn with the value of the head speed increment V3, the head speed increment V3 is an average value, but this is because the swing speed V1 is high, and when viewed at a ratio V3 / V1. For a swing in which the head speed has not increased so much due to bending of the shaft (a swing plotted around the middle right in FIGS. 10 and 11), there is a possibility that an appropriate shaft advice may not be given. With the illustration as shown in FIG. 10, it is possible to select a shaft suitable for the golfer GF.

  Further, the information processing apparatus 20 stores, as a part of the display information, the knowledge database which indicates the ratio of the increment V3 of the head speed related to the swing of the golfer GF to the entire head speed (V2) and the percentage of the swing speed V1. 281 is shown in comparison with the past data. FIGS. 12 and 13 show respective examples.

  FIGS. 12 and 13 are histograms showing the distribution of V3 / V2 or V3 / V1 values with the total number of past swings of many golfers GF being 100%. Since the value of V3 / V2 or V3 / V1 relating to the golfer GF's swing is shown here, it is possible to understand at a glance what type the swing corresponds to.

  According to the results of repeated trial and error by the inventors of the present invention, a hard tip shaft is preferable for a swing having a large head speed increment ratio, and a tip shaft is preferable for a swing having a small head speed increment ratio. The result obtained was that a softer shaft was preferable. The significance of generating the display information as described above lies in performing the fitting based on the head speed increment ratio.

  Although the specific examples of the display information have been described above, other graphs and visual information may be presented.

[Modification]
The above embodiment can be variously modified. For example, in the above embodiment, the increment V3 of the head speed was measured using the strain gauge 101. However, the present invention is not limited to this. For example, the amount of displacement is optically measured by a camera facing the head 11 from the grip 13. May be acquired. Alternatively, it may be obtained by a motion capture system. In the above embodiment, the head speed V2 is measured by using the camera-type measuring device 30, but is not limited thereto, and may be measured by, for example, a radar-Doppler-type measuring device. Alternatively, it may be measured by an acceleration / angular velocity sensor attached to the head or the tip of the shaft. Alternatively, it may be obtained by a motion capture system. Furthermore, in the above-described embodiment, the swing speed V1 is measured using the swing speed measurement sensor 131 that measures the acceleration and the angular velocity. However, the present invention is not limited to this, and may be acquired by, for example, a motion capture system.

  In the above embodiment, when the CPU 21 generates the display information, V1, V2, V3 or the like when the golfer GF makes a trial hit on the distribution and frequency distribution of past swings of other golfers based on the knowledge database 281. An example is shown in which the relationship (ratio) is plotted. However, with respect to the distribution and the frequency distribution based on the knowledge database 281, the method of indicating relatively which position the various data based on the test hit corresponds to is not limited to plotting, and there are various methods. For example, numerical information may be indicated near a graph or a histogram, or may be indicated by an arrow.

DESCRIPTION OF SYMBOLS 1 ... Fitting support system 10 ... Golf club 101 ... Strain gauge 131 ... Swing speed measurement sensor 132 ... Grip end module 21 ... CPU
28: Storage unit 281: Knowledge database 29: Communication unit 30: Camera type measuring instrument

Claims (10)

A golf club fitting system including a golf club and an information processing device,
The golf club includes a grip portion, a shaft portion, and a head portion,
The information processing device,
First speed information calculated based on the angular speed of rotation of the golf club due to the swing and the translation speed of the swing ;
Second speed information relating to the speed of the head portion during the swing;
Of the third speed information related to the moving speed of the head portion caused by the bending of the shaft portion during the swing,
A receiving unit that receives at least two,
Based on the received at least two pieces of speed information, calculate speed information excluding the received speed information among the first to third speed information,
A control unit that generates display information for fitting a golf club using a relationship among the first speed information, the second speed information, and the third speed information as a parameter;
A golf club fitting system, comprising: a display unit that outputs the display information. A first velocity information calculated by the translational speed of the angular velocity and the swing of the rotation by the swing of the rubber Rufukurabu,
Second speed information relating to the speed of the head of the golf club during the swing;
Of the third speed information related to the moving speed of the head portion caused by the bending of the shaft portion of the golf club during the swing,
A receiving unit that receives at least two,
Based on the received at least two pieces of speed information, calculate speed information excluding the received speed information among the first to third speed information,
An information processing apparatus, comprising: a control unit that generates display information for fitting a golf club using a relationship among the first speed information, the second speed information, and the third speed information as a parameter. The information processing apparatus according to claim 2, wherein
The information processing device, wherein the control unit generates the display information including information indicating a rate at which the speed according to the third speed information contributes to the increment of the speed according to the first speed information. The information processing apparatus according to claim 2, wherein
The information processing device, wherein the control unit generates the display information including information indicating a rate at which a speed related to the third speed information contributes to an increment of a speed related to the second speed information. The information processing apparatus according to claim 2, wherein:
The control unit may include, on a graph in which the first speed information and the third speed information are arranged on two axes, a speed related to the first speed information and a speed related to the third speed information during the swing. An information processing apparatus for generating the display information in which coordinates having velocity as a component are plotted. The information processing device according to claim 2, wherein:
The control unit may include, on a graph in which the second speed information and the third speed information are arranged on two axes, a speed related to the second speed information and a speed related to the third speed information during the swing. An information processing apparatus for generating the display information in which coordinates having velocity as a component are plotted. The information processing device according to claim 2, wherein:
The control unit may include, on a graph in which the first speed information and the second speed information are arranged on two axes, a speed related to the first speed information and a speed related to the second speed information during the swing. An information processing apparatus for generating the display information in which coordinates having velocity as a component are plotted. The information processing device according to claim 2, wherein:
The control unit is configured to control the third second time information of the specific second golfer at the time of the swing on a frequency distribution of a ratio of the third speed information to the second speed information at the time of swinging of a large number of first golfers. An information processing apparatus that generates the display information indicating a position to which a ratio of the speed information to the second speed information corresponds. The information processing device according to claim 2, wherein:
The control unit is configured to control the third second speed information of the specific second golfer during the swing on a frequency distribution of a ratio of the third speed information to the first speed information when a large number of first golfers swing. An information processing apparatus that generates the display information indicating a position to which a ratio of the speed information to the first speed information corresponds. First speed information calculated based on the angular speed of rotation by the swing of the golf club and the translation speed of the swing ;
Second speed information relating to the speed of the head of the golf club during the swing;
Of the third speed information related to the moving speed of the head portion caused by the bending of the shaft portion of the golf club during the swing,
A receiving step of receiving at least two;
A calculating step of calculating speed information, excluding the received speed information, of the first to third speed information based on the received at least two pieces of speed information;
An information processing method comprising: a display information generating step of generating display information for fitting a golf club using a relationship among the first speed information, the second speed information, and the third speed information as a parameter.

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