Method for testing maximum strength and explosive power of upper limbs

Abstract

The invention discloses a method for testing the maximum strength and explosive power of upper limbs, which comprises the following steps: a subject lies on the back or prostrate on a bench press and bench pull training device, continuously keeps a quiet state, measures and records the initial pressure of the bench press and bench pull training device in the quiet state, and records the initial pressure as quiet weight; the subject lies on the back or prostrate to carry out a bench press or bench pull test on the bench press or bench pull training device, and the training pressure of the bench press or bench pull training device in the bench press or bench pull process is measured and recorded; when the training pressure reaches the triggering pressure, a first data point with the training pressure smaller than or equal to the silent weight calibration pressure is searched forwards to serve as a force generation starting point; and obtaining indexes for evaluating the maximum strength and explosive power of the upper limbs based on the recorded training pressure. According to the invention, a bench press or bench pull test with equal-length strength is adopted, the power value of the bench press or bench pull action of the upper limb is acquired, and the dynamically acquired power value is processed to obtain the index for evaluating the maximum strength and explosive power of the upper limb.

Description

Technical Field

[0001] The present invention relates to the technical field of sports testing, and particularly relates to a method for testing the maximum strength and explosive power of the upper limbs. Background Art

[0002] The thigh mid-position pull (IMPT) evaluation method is widely used for the explosive power of the human lower limbs, but this method has not been applied to the test of the explosive power of the upper limbs. Therefore, there is an urgent need for an evaluation method for the strength and explosive power of the upper limb bench press and pull. Summary of the Invention

[0003] The purpose of the present invention is to provide a method for testing the maximum strength and explosive power of the upper limbs.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0005] A method for testing the maximum strength and explosive power of the upper limbs, comprising the following steps:

[0006] S1. The subject lies supine or prone on a bench press and pull training device, continuously maintains a quiet state, measures and records the starting pressure of the bench press and pull training device in the quiet state, and records it as the quiet body weight;

[0007] S2. The subject lies supine or prone on a bench press and pull training device to perform a bench press or pull test, measures and records the training pressure of the bench press and pull training device during the bench press or pull, and the training pressure is the bench press force or pull force plus the quiet body weight;

[0008] S3. When the training pressure reaches the trigger pressure, search forward to find the first data point where the training pressure is less than or equal to the quiet body weight calibration pressure as the starting point of the force. The trigger pressure is 1.3 times the quiet body weight, and the quiet body weight calibration pressure is the average value of the first 500 training pressures plus the average standard deviation of the first 500 training pressures;

[0009] S4. Based on the recorded training pressure, obtain indicators for evaluating the maximum strength and explosive power of the upper limbs. The indicators include peak force, peak force time, maximum strength, time-segmented force rate, time-segmented maximum force rate, average force rate, and peak force rate.

[0010] Furthermore, a pressure sensor is used to measure the starting pressure and training pressure. The sensor is connected to a sampling circuit. The sampling frequency of the sampling circuit is 1000HZ. The sampling circuit includes a single-chip microcomputer and an analog-to-digital converter. The analog-to-digital converter is used to convert the sampled pressure into a digital signal, and the single-chip microcomputer is used to store and process the digital signal.

[0011] Further, the force application time for the bench press or bench pull test is 5 s. Set a RAM storage space with 5000 data points in the single-chip microcomputer. Each data point in the RAM storage space stores a training pressure. Divide the RAM storage space into two parts. The first part is used to store 1500 training pressures before the force application start point, and the second part is used to store 3500 training pressures after the force application start point.

[0012] Further, the peak force is the maximum training pressure among the 3500 training pressures after the force application start point. Record the data point position of the peak force in the RAM storage space as the peak point and calculate the peak force time;

[0013] The calculation of the peak force time Tpeak is as follows:

[0014] Tpeak = (Ppeek - Pstart) * tps;

[0015] Ppeek is the peak point, Pstart is the force application start point, and tps is the time interval between two adjacent data points in the RAM storage space, and tps = 0.001 s.

[0016] Further, the calculation of the average force application rate RFDavg is as follows:

[0017] RFDavg = PF / Tpeak;

[0018] PF is the peak force, and Tpeak is the peak time.

[0019] Further, the calculation of the maximum strength is as follows: Segment the 5000 data volumes in the RAM storage space into segments of 200 data volumes each, obtaining segment intervals BUF[0] - BUF

[199] , BUF

[200] - BUF

[399] ,..., BUF

[4800] - BUF

[4999] . BUF[0] represents the data point position corresponding to the 1st data volume, and BUF

[4999] represents the data point position corresponding to the 5000th data volume. Calculate the segment average value of the training pressure in each segment interval, and record the maximum segment average value as the maximum strength.

[0020] Further, the calculation of the time-segmented force application rate is as follows:

[0021] RFDn = (BUF[Pstart + N] - BUF[Pstart]) / (N * 0.001);

[0022] RFDn represents the time-segmented force application rate between N data points with the force application start point as the reference point, n = Nms, BUF[Pstart] is the training pressure at the force application start point, and BUF[Pstart + N] is the training pressure at the Nth data point after the force application start point;

[0023] RFDn2 - n1 = (BUF[Pstart + N2] - BUF[Pstart + N1]) / ((N2 - N1) * 0.001);

[0024] RFDn2 - n1 represents the time - segmented force - exertion rate between (N2 - N1) data points with the N1 - th data point after the force - exertion start point as the reference point. n2 = N2ms, n1 = N1ms, BUF[Pstart + N1] is the training pressure at the N1 - th data point after the force - exertion start point, and BUF[Pstart + N2] is the training pressure at the N2 - th data point after the force - exertion start point.

[0025] Further, the calculation of the time - segmented maximum force - exertion rate RFDmaxn is as follows:

[0026] RFDmaxn = max{RFDnN0, RFDnN1, RFDnN2,...RFDnNe};

[0027] Ne = 4999 - Pstart - N;

[0028] RFDnN0 = (BUF[Pstart + N + 0] - BUF[Pstart + 0]) / (N * 0.001);

[0029] RFDnN1 = (BUF[Pstart + N + 1] - BUF[Pstart + 1]) / (N * 0.001);

[0030] RFDnN2 = (BUF[Pstart + N + 2] - BUF[Pstart + 2]) / (N * 0.001); ...

[0032] RFDnNe = (BUF[Pstart + N + 4999 - Pstart - N] - BUF[Pstart + 4999 - Pstart - N]) / (N * 0.001) = (BUF

[4999] - BUF[4999 - N]) / (N * 0.001);

[0033] Further, the calculation of the peak force - exertion rate RFDpeak is as follows:

[0034] RFDpeak = RFDmax20ms;

[0035] RFDmax20ms is the maximum value of the time - segmented force - exertion rate between every 20 data points with the force - exertion start point as the starting point.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] The present invention uses an isometric strength bench press or lying pull test to collect the force values of the upper limb bench press or lying pull movements, and obtains indicators for evaluating the maximum strength and explosive power of the upper limb by processing the dynamically collected force values. The operation of the present invention is simple, and it can efficiently and quickly realize the test of the maximum strength and explosive power of the upper limb. Brief Description of the Drawings

[0038] Figure 1 It is a flowchart of the method of the present invention.

[0039] Figure 2 It is a structural diagram of the bench press and lying pull training device of the present invention.

[0040] Figure 3 It is a structural diagram of the training bench of the bench press and lying pull training device of the present invention.

[0041] Figure 4 It is an exploded view of the training bench of the bench press and lying pull training device of the present invention.

[0042] Figure 5 It is a cross-sectional view of the side frame of the bench press and lying pull training device of the present invention.

[0043] Figure 6 It is a structural diagram of the side frame push rod of the bench press and lying pull training device of the present invention.

[0044] Figure 7 It is a structural diagram of the push rod seat A of the bench press and lying pull training device of the present invention.

[0045] Figure 8 It is a structural diagram of the push rod seat B of the bench press and lying pull training device of the present invention.

[0046] Figure 9 It is a schematic diagram of the lying pull state of the bench press and lying pull training device of the present invention.

[0047] Among them, the names corresponding to the reference numerals are:

[0048] 1 - training bench; 2 - side frame; 3 - upper frame of the side frame; 4 - receiving plate; 5 - push rod seat A; 6 - push rod; 7 - push rod seat B; 8 - sampling circuit; 9 - button; 10 - pressure sensor; 11 - sensor mounting hole; 12 - base; 13 - guide rod; 14 - leg; 15 - cross bar; 16 - sliding groove; 17 - Smith machine; 18 - barbell bar; 19 - barbell plate; 20 - limit block; 21 - limit groove; 22 - pull-up bar; 23 - push rod mounting groove A; 24 - connection hole A; 25 - push rod mounting block; 26 - connection hole B; 27 - pin A; 28 - push rod mounting groove B; 29 - connection hole C; 30 - connection hole D; 31 - pin B; 32 - breathing mounting groove; 33 - breathing hole pad; 34 - foot plate. Detailed Embodiments

[0049] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the protection scope of the present invention.

[0050] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0051] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; of course, it can also be a mechanical connection or an electrical connection; in addition, it can also be directly connected, or indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0052] As Figure 1 shown, a method for testing the maximum strength and explosive power of the upper limb provided by the present invention includes the following steps:

[0053] S1. The subject lies supine or prone on the bench press and pull training device, and continuously maintains a quiet state to measure and record the starting pressure of the bench press and pull training device in the quiet state, which is recorded as the quiet body weight.

[0054] S2. The subject lies supine or prone on the bench press and pull training device to perform a bench press or pull test, and measure and record the training pressure of the bench press and pull training device during the bench press or pull. The training pressure is the bench press force or pull force plus the quiet body weight.

[0055] S3. When the training pressure reaches the trigger pressure, search forward for the first data point where the training pressure is less than or equal to the quiet body weight calibration pressure as the starting point of the force. The trigger pressure is 1.3 times the quiet body weight, and the quiet body weight calibration pressure is the average of the first 500 training pressures plus the average standard deviation of the first 500 training pressures.

[0056] S4. Obtain indicators for evaluating the maximum strength and explosive power of the upper limb based on the recorded training pressure. The indicators include peak force, peak force time, maximum strength, time-segmented force generation rate, time-segmented maximum force generation rate, average force generation rate, and peak force generation rate.

[0057] The above-mentioned S1 is the preparation stage before the test. Before the test, it is necessary to measure the weight of the subject. Specifically, the subject lies supine or prone on the bench press and pull training device, continuously maintains a quiet state for 5 s and records the starting pressure of the bench press and pull training device in the quiet state, denoted as the quiet body weight (BW), and the quiet body weight is the weight of the subject.

[0058] The above-mentioned S2 is the test stage. The subject lies supine or prone on the bench press and pull training device, prepares and keeps the upper limb relaxed, and quickly exerts force after hearing the instruction. After exerting force for 5 s, the test is automatically completed. During the test, the training pressure of the bench press and pull training device during the bench press or pull is measured and recorded. The training pressure is the bench press force or pull force plus the quiet body weight. Among them, a pressure sensor installed under the bench press and pull training device is used to measure the starting pressure and training pressure. The sensor is connected to a sampling circuit, and the sampling frequency of the sampling circuit is 1000 HZ, that is, the training pressure of the subject is sampled and recorded 1000 times per second. If the force is exerted for 5 s, it is sampled 5000 times, including 5000 data. To meet the requirements for testing and analyzing instantaneous movements in explosive power tests, the minimum requirement is 200 Hz. The data acquisition speed of 1000 HZ adopted in the present invention can fully ensure the accuracy requirements of the test data.

[0059] The above-mentioned sampling circuit includes a single-chip microcomputer and an analog-to-digital converter. The analog-to-digital converter is used to convert the sampled pressure into a digital signal, and the single-chip microcomputer is used to store and process the digital signal. Preferably, the single-chip microcomputer adopts STM32F103VET6, and the analog-to-digital converter adopts ADS1220. Set a RAM storage space with a data volume of 5000 in the single-chip microcomputer, that is, the data buffer area BUF. Each data point in the RAM storage space stores a training pressure. The RAM storage space is divided into two parts. The first part BUF

[1500] is used to store 1500 training pressures before the force application start point, and the second part BUF

[3500] is used to store 3500 training pressures after the force application start point.

[0060] Before the training pressure (Fn) is less than the trigger pressure (TriggerW), the microcontroller controls the analog-to-digital converter to collect the training pressure in real time, which is stored in the BUF

[1500] storage space and continuously overwritten and updated, that is, dynamically refreshed and stored in the BUF

[1500] storage space. Dynamic refresh means that if the data in BUF

[1500] is full, the first data in BUF

[1500] is removed, and the data as a whole migrates forward, and the latest data is stored in the last empty position. The data will continuously cycle and migrate to save the newly collected pressure data until it is greater than or equal to the trigger pressure, at which time the data saving will stop. When the training pressure (Fn) is equal to or greater than the trigger pressure (TriggerW), 3500 data are continuously collected and stored in the BUF

[3500] storage space and the test is completed. Finally, the data obtained by the single-chip microcomputer is BUF

[5000] =BUF

[1500] +BUF

[3500] .

[0061] S3 and S4 are the data storage and processing stages. When the training pressure (Fn) reaches the trigger pressure (TriggerW), search forward to find the first data point where the training pressure is less than or equal to the quiet body weight calibration pressure (BWref) as the starting point of force application (Pstart). The trigger pressure (TriggerW) is 1.3 times the quiet body weight (BW), and the quiet body weight calibration pressure is the average value (Favg500) of the first 500 training pressures plus the average standard deviation (SD500) of the first 500 training pressures, that is, BWref = Favg500 + SD500. The magnitude (change) of the training pressure (Fn) is due to the pressure exerted on the sensor under the bench press or pull-up training device by the subject when doing the bench press or pull-up. The greater the force of the subject, the greater the corresponding pressure.

[0062] The starting point of force application (Pstart) is also called the starting position of the movement, indicating that the subject is in the force application state and is the turning point from the reserve stage to the test stage. According to the test process, the subject remains quiet before the test. At this time, the pressure value of the pressure sensor is the quiet body weight (BW). When the subject applies force, the pressure value quickly increases to reach the trigger pressure (TriggerW), that is, 1.3*BW. Therefore, among the data stored in BUF

[1500] , search forward from the position of the last data point and mark the position of the data point less than or equal to BW. This position is defined as the starting point of force application Pstart.

[0063] Peak force (PF) refers to the maximum value of force reached within a certain period of time, that is, the maximum instantaneous value reached during the entire test phase, which can intuitively reflect the strength level of the subject. The peak force is the maximum training pressure among 3500 training pressures BUF

[3500] after the starting point of force application. At the same time, record the data point position of the peak force in the RAM storage space as the peak point and calculate the peak force time. The calculation of the peak force time Tpeak is as follows:

[0064] Tpeak = (Ppeek - Pstart) * tps;

[0065] Ppeek is the peak point, Pstart is the starting point of force application, and tps is the time interval between two adjacent data points in the RAM storage space. Since the sampling frequency is 1000Hz, tps is 0.001s, that is, 1ms.

[0066] Average rate of force development (RFDavg) is the change in force divided by the change in time within the time required to reach the peak force from the start of force application. It is an important indicator to measure explosive power and is used to evaluate the ability of an athlete or individual to generate force in a short period of time.

[0067] The calculation of the average rate of force development RFDavg is as follows:

[0068] RFDavg = PF / Tpeak;

[0069] PF is the peak force and Tpeak is the peak time.

[0070] Maximum strength is the maximum value of the segment average in each segment interval during the entire test process. It is the average strength in different time periods and is an important indicator to measure the maximum upper limb strength. The calculation of the maximum strength is as follows: Segment the 5000 data volumes in the RAM storage space into segments of 200 data volumes each, obtaining segment intervals BUF[0] - BUF

[199] , BUF

[200] - BUF

[399] ,..., BUF

[4800] - BUF

[4999] . BUF[0] represents the data point position corresponding to the first data volume, and BUF

[4999] represents the data point position corresponding to the 5000th data volume. Calculate the segment average Avg200ms of the training pressure within each segment interval, that is, 25 Avg200ms, and record the calculated maximum segment average as the maximum strength.

[0071] Time - segmented rate of force development refers to the rate of change of force within a specified time period. It is an indicator to measure the ability of muscles to generate force quickly in different time periods.

[0072] The time-segmented force development rate includes the time-segmented force development rate RFDn between N data points with the force start point as the reference point, and the time-segmented force development rate between (N2 - N1) data points with the N1th data point after the force start point as the reference point.

[0073] Specifically:

[0074] RFDn = (BUF[Pstart + N] - BUF[Pstart]) / (N * 0.001);

[0075] n = Nms, BUF[Pstart] is the training pressure at the force start point, BUF[Pstart + N] is the training pressure at the Nth data point after the force start point, and 0.001 is the time interval between two adjacent data points in the RAM storage space, that is, 0.001s;

[0076] RFDn2 - n1 = (BUF[Pstart + N2] - BUF[Pstart + N1]) / ((N2 - N1) * 0.001);

[0077] n2 = N2ms, n1 = N1ms, BUF[Pstart + N2] is the training pressure at the N2th data point after the force start point, BUF[Pstart + N1] is the training pressure at the N1th data point after the force start point, and 0.001 is the time interval between two adjacent data points in the RAM storage space, that is, 0.001s.

[0078] The time-segmented force development rates to be analyzed in the explosive force test with a sampling frequency of 1000HZ mainly include RFD50ms, RFD100ms, RFD150ms, RFD200ms, RFD250ms, RFD50ms - 100ms, RFD100ms - 200ms, and RFD200ms - 250ms.

[0079] RFD50ms = (BUF[Pstart + 50] - BUF[Pstart]) / (50 * 0.001);

[0080] RFD100ms = (BUF[Pstart + 100] - BUF[Pstart]) / (100 * 0.001);

[0081] RFD150ms = (BUF[Pstart + 150] - BUF[Pstart]) / (150 * 0.001);

[0082] RFD200ms = (BUF[Pstart + 200] - BUF[Pstart]) / (200 * 0.001);

[0083] RFD250ms = (BUF[Pstart + 250] - BUF[Pstart]) / (250 * 0.001);

[0084] RFD50 - 100ms = (BUF[Pstart + 100] - BUF[Pstart + 50]) / ((100 - 50) * 0.001);

[0085] RFD100 - 200ms = (BUF[Pstart + 200] - BUF[Pstart + 100]) / ((200 - 100) * 0.001);

[0086] RFD200 - 250ms = (BUF[Pstart + 250] - BUF[Pstart + 200]) / ((250 - 200) * 0.001).

[0087] The time - segmented maximum force - development rate refers to the maximum rate at which muscles generate force within a specific time interval, and it is an important indicator for measuring the ability of muscles to generate force quickly in different time periods.

[0088] The calculation of the time - segmented maximum force - development rate is as follows:

[0089] RFDmaxn = max{RFDnN0, RFDnN1, RFDnN2,...RFDnNe};

[0090] Ne = 4999 - Pstart - N;

[0091] RFDnN0 = (BUF[Pstart + N + 0] - BUF[Pstart + 0]) / (N * 0.001);

[0092] RFDnN1 = (BUF[Pstart + N + 1] - BUF[Pstart + 1]) / (N * 0.001);

[0093] RFDnN2 = (BUF[Pstart + N + 2] - BUF[Pstart + 2]) / (N * 0.001); ...

[0095] RFDnNe = (BUF[Pstart + N + 4999 - Pstart - N] - BUF[Pstart + 4999 - Pstart - N]) / (N * 0.001) = (BUF

[4999] - BUF[4999 - N]) / (N * 0.001).

[0096] Similarly, 0.001 is the time interval between two adjacent data points in the RAM storage space, that is, 0.001 s.

[0097] For the explosive force test with a sampling frequency of 1000 HZ, the maximum force rates to be analyzed for the time segments mainly include RFDmax50ms, RFDmax100ms, RFDmax150ms, RFDmax200ms, and RFDmax250ms.

[0098] The calculation of RFDmax50ms is as follows:

[0099] Ne = 4999 - Pstart - 50;

[0100] RFDmax50ms = max{RFD50msN0, RFD50msN1, RFD50msN2,... RFD50msNN};

[0101] RFD50msN0 = (BUF[Pstart + 50 + 0] - BUF[Pstart + 0]) / (50 * 0.001);

[0102] RFD50msN1 = (BUF[Pstart + 50 + 1] - BUF[Pstart + 1]) / (50 * 0.001);

[0103] RFD50msN2 = (BUF[Pstart + 50 + 2] - BUF[Pstart + 2]) / (50 * 0.001); ...

[0105] RFDn50msN = (BUF

[4999] - BUF[4999 - 50]) / (50 * 0.001).

[0106] The calculations of RFDmax100ms, RFDmax150ms, RFDmax200ms, and RFDmax250m are the same, so they will not be elaborated here.

[0107] The peak force rate is the maximum force rate calculated based on the force rate RFD20ms for the time segment with a time width of 20 ms, that is, between 20 data points. It is an important indicator to measure the ability of muscles to generate force rapidly in a short time and is used to evaluate the explosive power of athletes and the function of the neuromuscular system.

[0108] The calculation of the peak force rate RFDpeak is as follows:

[0109] RFDpeak = RFDmax20ms;

[0110] RFDmax20ms is the maximum value of the time-segmented force application rate between every 20 data points starting from the force application start point.

[0111] As Figures 2 - 9 shown, the bench press and pull training device adopted by the present invention includes a Smith component for bench press or pull, and a training bench 1 located directly below the Smith component for supporting the subject to perform bench press or pull training;

[0112] The training bench 1 includes a pair of parallel side frames 2, a side frame upper frame 3 slidably arranged on the side frames 2, a receiving plate 4 arranged between the two side frame upper frames 3 and located directly below the Smith component, a detection component arranged at the bottom of the side frames 2 for detecting the bench press thrust of the subject, and a control mechanism arranged on the side wall of the side frames 2 and connected to the detection component.

[0113] The subject lies supine or prone on the training bench 1 and performs bench press or pull training by pushing or pulling the Smith component.

[0114] The side frame upper frame 3 is slidably installed on the side frames 2, and the receiving plate 4 is arranged between the side frame upper frames 3. During use, the height of the receiving plate 4 can be adjusted by sliding the side frame upper frame 3, so as to facilitate the user to use the training bench 1. And the detection component is arranged at the bottom of the side frames 2. During use, the detection component can measure the pressure on the receiving plate 4 (i.e., the above-mentioned training pressure) in real time, and transmit the measured pressure to the control mechanism for processing to obtain an index for evaluating the maximum upper limb strength and explosive power.

[0115] Preferably, a driving mechanism is arranged between the side frames 2 and the side frame upper frame 3. The driving mechanism includes a push rod seat A5 arranged on the side frames 2, a push rod 6 arranged on the push rod seat A5 and connected to the control mechanism, and a push rod seat B7 arranged on the side frame upper frame 3 and connected to the output end of the push rod 6.

[0116] The driving mechanism can facilitate driving the side frame upper frame 3 to slide on the side frames 2, so as to facilitate adjusting the height of the receiving plate 4. Specifically, the push rod seat A5 is installed in the middle of the top surface of the side frames 2, and the push rod 6 is installed on the push rod seat A5 and connected to the control mechanism. The push rod seat B7 is installed on the side frame upper frame 3 and connected to the output end of the push rod 6. During use, the control mechanism controls the push rod 6 to move, and the push rod 6 pushes the side frame upper frame 3 to rise or fall, and the side frame upper frame 3 drives the receiving plate 4 to rise or fall, so as to facilitate adjusting the height of the receiving plate 4.

[0117] More preferably, a push rod mounting groove A23 is formed in the push rod seat A5, a connection hole A24 communicating with the push rod mounting groove A23 is provided on the push rod seat A5, a push rod mounting block 25 adapted to the push rod mounting groove A23 is provided at the bottom of the push rod 6, a connection hole B26 adapted to the connection hole A24 is provided on the push rod mounting block 25. During installation, the push rod mounting block 25 is located in the push rod mounting groove A23, and a pin A27 is inserted into the connection hole A24 and the connection hole B26.

[0118] More preferably, a push rod mounting groove B28 is formed in the push rod seat B7, a connection hole C29 adapted to the push rod mounting groove B28 is provided on the push rod seat B7, a connection hole D30 adapted to the connection hole C29 is provided at the output end of the push rod 6. During connection, the output end of the push rod 6 is located in the push rod mounting groove B28, and a pin B31 is inserted into the connection hole C29 and the connection hole D30, thereby facilitating the installation and fixation of the push rod 6.

[0119] Preferably, the control mechanism includes a sampling circuit 8 provided on one of the side frames 2 and connected to the detection component and the push rod 6 respectively, and buttons 9 provided on the upper frames 3 of the two side frames and connected to the sampling circuit 8. The sampling circuit 8 includes a single-chip microcomputer and an analog-to-digital converter. The analog-to-digital converter is used to convert the sampled pressure into a digital signal, and the single-chip microcomputer is used to store and process the digital signal. Preferably, the single-chip microcomputer is wirelessly connected to a mobile device such as a mobile phone or a PC, and the mobile device can display the processed digital signal, that is, the curve graph formed by each index and individual indexes.

[0120] More preferably, the sampling circuit 8 is arranged on the side wall of one of the side frames 2, the buttons 9 are respectively arranged on the upper frames 3 of the two side frames, and the buttons 9 move synchronously with the upper frames 3 of the side frames. The buttons 9 are connected to the sampling circuit 8. During use, the buttons 9 can facilitate the adjustment of the moving distance of the push rod 6, thereby facilitating the adjustment of the height of the receiving plate 4.

[0121] Preferably, the detection component includes a pressure sensor 10 provided at the bottom of the side frame 2 and connected to the control mechanism. The pressure sensor 10 is used to measure the starting pressure and the training pressure; a sensor mounting hole 11 adapted to the pressure sensor 10 is provided at the bottom of the side frame 2, and the pressure sensor 10 is installed in the sensor mounting hole 11. The installation of the pressure sensor 10 can be facilitated through the sensor mounting hole 11.

[0122] More preferably, there are four pressure sensors 10, which are respectively arranged at the four corners of the bottom of the training bench 1.

[0123] Preferably, the side frame 2 includes a base 12 and a pair of guide rods 13 that are parallelly arranged on the base 12 and slidably connected to the upper side frame 3; the detection assembly is arranged at the bottom of the base 12, and the control mechanism is installed on the side wall of one of the bases 12. The guide rods 13 are arranged on the base 12, and the upper side frame 3 is installed on the guide rods 13. The base 12 can facilitate the support of the guide rods 13, and at the same time, the guide rods 13 can guide when the upper side frame 3 slides, so as to facilitate the sliding of the upper side frame 3. Moreover, the push rod seat A5 is installed on the base 12 and located in the middle of the two guide rods 13, the pressure sensor 10 is installed at the bottom of the base 12, and the control mechanism is installed on the side wall of one of the bases 12.

[0124] Preferably, the upper side frame 3 includes legs 14 that are respectively slidably arranged on the two guide rods 13, and a cross bar 15 that is arranged between the two legs 14 and connected to the receiving plate 4; the legs 14 are provided with sliding grooves 16 adapted to the guide rods 13, and the legs 14 are slidably installed on the guide rods 13 through the sliding grooves 16. The two legs 14 are respectively slidably installed on the corresponding guide rods 13, the cross bar 15 is installed between the two legs 14 and moves synchronously with the legs 14. The cross bar 15 is connected to the receiving plate 4, and the push rod seat B7 is installed in the middle of the bottom surface of the cross bar 15. During use, the push rod 6 drives the cross bar 15 to move, the cross bar 15 drives the legs 14 to move on the guide rods 13, and at the same time, the cross bar 15 drives the receiving plate 4 to move, so as to facilitate the adjustment of the height of the receiving plate 4. The legs 14 are provided with sliding grooves 16 adapted to the guide rods 13, and the legs 14 are slidably installed on the guide rods 13 through the sliding grooves 16, and the sliding grooves 16 can facilitate the installation of the legs 14 on the guide rods 13.

[0125] Preferably, the Smith assembly includes a Smith frame 17 located directly above the receiving plate 4, two groups of limiting mechanisms arranged on the Smith frame 17 in a mirror image manner, and a barbell assembly arranged between the two limiting mechanisms. The Smith frame 17 is located directly above the receiving plate 4, the limiting mechanisms are arranged on the Smith frame 17, and the barbell assembly is arranged between the two limiting mechanisms. The limiting mechanisms can facilitate the limitation of the barbell assembly. The user lies on the training bench 1, and the user pushes or pulls the barbell assembly on the limiting mechanism to perform bench press or bench pull training.

[0126] Preferably, the barbell assembly includes a barbell rod 18 arranged between the two limiting mechanisms, and a plurality of barbell plates 19 respectively arranged at both ends of the barbell rod 18. The barbell rod 18 is placed between the two limiting mechanisms, and the barbell plates 19 are respectively arranged at both ends of the barbell rod 18. Preferably, there are 3 barbell plates 19. When performing bench press or bench pull training, the user pushes or pulls the barbell rod 18 to perform bench press or bench pull training.

[0127] Preferably, the limiting mechanism includes a plurality of limiting blocks 20 spaced on the Smith machine 17, and a limiting groove 21 provided on the limiting block 20, and the barbell rod 18 is located in the limiting groove 21. The limiting block 20 is arranged on the Smith machine 17. Preferably, there are nine limiting blocks 20 in the present invention. The limiting groove 21 is opened on the limiting block 20. The limiting groove 21 can facilitate the limitation of the barbell rod 18, thereby preventing the barbell rod 18 from sliding on the limiting block 20.

[0128] Preferably, a pull-up bar 22 for training pull-ups is respectively provided on both sides of the top of the Smith machine 17. The pull-up bar 22 is arranged on both sides of the top of the Smith machine 17. During use, the Smith machine 17 is moved out of the training bench 1, so that the pull-up bar 22 can be used for pull-up training.

[0129] Finally, it should be noted that the above embodiments are only relatively preferred embodiments of the present invention to illustrate the technical solutions of the present invention, rather than limiting it, and certainly not limiting the patent scope of the present invention; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention; that is to say, any meaningless changes or polishings made in the main design idea and spirit of the present invention, as long as the technical problems solved are still the same as those of the present invention, should be included in the protection scope of the present invention; in addition, directly or indirectly applying the technical solutions of the present invention to other related technical fields shall similarly be included in the patent protection scope of the present invention.

Claims

1. A method for testing the maximum strength and explosive power of the upper limb, characterized in that, It includes the following steps: S1. The subject lies supine or prone on the bench press and pull training device, and continuously maintains a quiet state to measure and record the starting pressure of the bench press and pull training device in the quiet state, which is recorded as the quiet body weight; S2. The subject lies supine or prone on the bench press and pull training device to perform a bench press or pull test, and measures and records the training pressure of the bench press and pull training device during the bench press or pull. The training pressure is the bench press force or pull force plus the quiet body weight; S3. When the training pressure reaches the trigger pressure, search forward for the first data point where the training pressure is less than or equal to the quiet body weight calibration pressure as the starting point of the force. The trigger pressure is 1.3 times the quiet body weight, and the quiet body weight calibration pressure is the average of the first 500 training pressures plus the average standard deviation of the first 500 training pressures; S4. Based on the recorded training pressure, obtain the indicators for evaluating the maximum upper limb strength and explosive power. The indicators include peak force, peak force time, maximum strength, time-segmented force rate, time-segmented maximum force rate, average force rate, and peak force rate.

2. The method for testing the maximum strength and explosive power of the upper limb according to claim 1, characterized in that The starting pressure and training pressure are measured using a pressure sensor. The sensor is connected to a sampling circuit. The sampling frequency of the sampling circuit is 1000HZ. The sampling circuit includes a single-chip microcomputer and an analog-to-digital converter. The analog-to-digital converter is used to convert the sampled pressure into a digital signal, and the single-chip microcomputer is used to store and process the digital signal.

3. A method for testing the maximum strength and explosive power of the upper limb according to claim 2, characterized in that, The force application time for the bench press or pull test is 5s. Set a RAM storage space of 5000 data points in the single-chip microcomputer. Each data point in the RAM storage space stores a training pressure. Divide the RAM storage space into two parts. The first part is used to store the first 1500 training pressures before the starting point of the force, and the second part is used to store the 3500 training pressures after the starting point of the force.

4. A method for testing the maximum strength and explosive power of the upper limbs according to claim 3, characterized in that, The peak force is the maximum training pressure among the 3500 training pressures after the starting point of the force. Record the data point position of the peak force in the RAM storage space as the peak point and calculate the peak force time; The calculation of the peak force time Tpeak is as follows: Tpeak = (Ppeek - Pstart) * tps; Ppeek is the peak point, Pstart is the starting point of the force, and tps is the time interval between two adjacent data points in the RAM storage space, tps = 0.001s.

5. A method for testing the maximum strength and explosive power of the upper limb according to claim 4, characterized in that, The calculation of the average force rate RFDavg is as follows: RFDavg = PF / Tpeak; PF is the peak force, and Tpeak is the peak time.

6. A method for testing the maximum strength and explosive power of the upper limb according to claim 3, characterized in that, The calculation of the maximum strength is as follows: Divide the 5000 data volumes in the RAM storage space into segments of 200 data volumes each, obtaining segment intervals BUF[0] - BUF[199], BUF[200] - BUF[399],..., BUF[4800] - BUF[4999]. BUF[0] represents the data point position corresponding to the first data volume, and BUF[4999] represents the data point position corresponding to the 5000th data volume. Calculate the segment average value of the training pressure in each segment interval, and record the largest segment average value as the maximum strength.

7. A method for testing the maximum strength and explosive power of the upper limb according to claim 3, characterized in that, The calculation of the time-segmented force rate is as follows: RFDn = (BUF[Pstart + N] - BUF[Pstart]) / (N * 0.001); RFDn represents the time - segmented force - exertion rate between N data points with the starting point of force exertion as the reference point. n = N ms, BUF[Pstart] is the training pressure at the starting point of force exertion, and BUF[Pstart + N] is the training pressure at the Nth data point after the starting point of force exertion; RFDn2 - n1 = (BUF[Pstart + N2] - BUF[Pstart + N1]) / ((N2 - N1) * 0.001); RFDn2 - n1 represents the time - segmented force - exertion rate between (N2 - N1) data points with the N1th data point after the starting point of force exertion as the reference point. n2 = N2 ms, n1 = N1 ms, BUF[Pstart + N1] is the training pressure at the N1th data point after the starting point of force exertion, and BUF[Pstart + N2] is the training pressure at the N2th data point after the starting point of force exertion.

8. A method for testing the maximum strength and explosive power of the upper limb according to claim 7, characterized in that, The calculation of the time - segmented maximum force - exertion rate RFDmaxn is as follows: RFDmaxn = max{RFDnN0, RFDnN1, RFDnN2,... RFDnNe}; Ne = 4999 - Pstart - N; RFDnN0 = (BUF[Pstart + N + 0] - BUF[Pstart + 0]) / (N * 0.001); RFDnN1 = (BUF[Pstart + N + 1] - BUF[Pstart + 1]) / (N * 0.001); RFDnN2 = (BUF[Pstart + N + 2] - BUF[Pstart + 2]) / (N * 0.001); ... RFDnNe = (BUF[Pstart + N + 4999 - Pstart - N] - BUF[Pstart + 4999 - Pstart - N]) / (N * 0.001) = (BUF[4999] - BUF[4999 - N]) / (N * 0.001).

9. A method for testing the maximum strength and explosive power of the upper limb according to claim 7, characterized in that, The calculation of the peak force - exertion rate RFDpeak is as follows: RFDpeak = RFDmax20ms; RFDmax20ms is the maximum value of the time - segmented force - exertion rate between every 20 data points with the starting point of force exertion as the starting point.

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