A sitting forward flexion test device and a test method thereof

Abstract

The present invention relates to a sit-and-reach test device and a test method thereof. Sit-and-reach is a test item used to reflect the flexibility of the human body. The test results of the currently commonly used sit-and-reach test method are correlated with the arm length and the leg length, resulting in unfairness. The test method of the present invention uses the sum of the finger-heel distance in a straight state and the finger-heel distance in a bent state as the final score of sit-and-reach, and its test results are independent of the arm length and the leg length of the person being tested, thereby improving the scientificity and fairness of the sit-and-reach test results. The test device of the present invention can conveniently and accurately obtain test data of the finger-heel distance in a straight state and the finger-heel distance in a bent state. The straight measurement component of the present invention can be conveniently combined with the commonly used sit-and-reach test device to form a device that can simultaneously measure the finger-heel distance in a straight state and the finger-heel distance in a bent state.

Description

Technical Field

[0001] The invention relates to the field of sports equipment, and in particular to a sit-and-reach test device and a test method thereof. Background Art

[0002] The sit and reach exercise is a test item used to reflect the flexibility of the human body. Flexibility refers to the ability of the joints, muscles, tendons and ligaments to stretch when the human body completes an action. The quality of flexibility depends on the anatomical structure of the joints, the volume of the soft tissues around the joints, and the stretchability of the ligaments, tendons, muscles and skin. In order to encourage and promote students to actively participate in physical exercise and enhance their physical fitness, the "Student Physical Fitness Standard" was piloted in China in 2002. The sit and reach exercise is one of the test items specified in the standard. According to the results of the national student physical fitness and health survey in 2005, the Ministry of Education and the State General Administration of Sports have improved and revised the "Student Physical Fitness Standard". Now the sit and reach exercise is one of the optional items in the Chinese physical fitness middle school entrance examination.

[0003] The sit-and-reach test tests the range of motion that students' trunk, waist, hip and other joints can achieve in a static state. It mainly reflects the stretchability and elasticity of the joints, ligaments and muscles in these parts, as well as the development level of students' physical flexibility.

[0004] Currently, the commonly used test devices for sit-and-reach test are as follows: Figure 1 As shown. The foot support plate 11-1 is vertically fixedly connected to the horizontal support plate 11-5; a support reinforcement plate 11-6 is fixed between the foot support plate 11-1 and the horizontal support plate 11-5; the front end surface of the foot support plate 11-1 is the test reference surface 3; a scale rail 11-4 is fixed to the middle and upper part of the foot support plate 11-1; the scale rail 11-4 is perpendicular to the test reference surface 3; the upper end surface of the scale rail 11-4 has a body scale mark 11-2 of centimeters and millimeters; the 0 scale line of the body scale mark 11-2 on the scale rail 11-4 is flush with the test reference surface 3; the body sliding cursor 11-3 is mounted on the outside of the scale rail 11-4 and can slide longitudinally along the scale rail 11-4.

[0005] Currently, the commonly used test methods for sit-and-reach test are as follows: Figure 2 The person being tested 15 is in a sitting position, with the sole of the foot close to the test reference surface 3 of the body 11 of the commonly used sit-and-reach test device. Then the trunk is bent toward the legs, the arms are stretched toward the toes, and the fingertips 10 of the arms push the body sliding cursor 11-3 forward until it can no longer be pushed forward.

[0006] Figure 2The distance from the middle arm fingertip 10 to the shoulder joint 8 is the arm length 9; the distance from the shoulder joint 8 to the hip joint 5 is the trunk length 6; the angle between the line 7 from the shoulder joint 8 to the hip joint 5 and the horizontal reference line is the bending angle α; the distance from the hip joint 5 to the test reference plane 3 is the leg length 4; the currently commonly used test result of the sitting forward flexion is the distance from the arm fingertip 10 to the test reference plane 3, that is, the bent state finger-to-heel distance 1 in the present invention.

[0007] Depend on Figure 2 It can be seen that the bending state refers to the distance between the heel and the arm 9 + the trunk length 6·cosα-the leg length 4. Therefore, the test results of the commonly used sitting forward flexion test method, that is, the bending state refers to the distance between the heel and the arm 9, the trunk length 6, the leg length 4 and the bending angle α, are all correlated. Among them, only the bending angle α can more truly reflect the flexibility of the human body, and the arm length 9, the trunk length 6, and the leg length 4 have no direct correlation with the flexibility of the human body.

[0008] Therefore, the current testing method has the following disadvantages:

[0009] When the torso length 6 and the bending angle α are the same, the test scores of students with long arms 9 and short legs 4 are significantly better than those of students with short arms 9 and long legs 4.

[0010] The above shortcomings indicate that the existing sit-and-reach test method will cause unfairness. Because objective factors such as leg length and arm length are affected by genetic factors and early development time, they cannot be changed through hard training in a short period of time. Students with long legs and short arms have an innate disadvantage in the currently commonly used sit-and-reach test. Despite hard practice, the final results are still not up to standard. Students with long arms and short legs have an innate advantage in the currently commonly used sit-and-reach test and can easily achieve good results. Summary of the invention

[0011] The purpose of the present invention is to overcome the disadvantage that the existing sit-and-reach test method may cause unfairness, and to provide a sit-and-reach test device and a test method, which can avoid the influence of arm length and leg length on the measurement results.

[0012] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0013] A sitting forward flexion testing device comprises a device body and a straightness measuring component, wherein the device body comprises a foot support plate, a body scale mark, a body sliding cursor, a scale guide rail, a horizontal support plate, a support reinforcement plate and a test reference surface, and the straightness measuring component comprises two measuring guide rails fixed to both sides of the device body and having a component sliding cursor, the lower end surface of the measuring guide rail and the lower end surface of the horizontal support plate on the device body are on the same horizontal plane, and the upper end surface of the measuring guide rail is provided with centimeter and millimeter measuring scales; the 0 scale line of the measuring scale is flush with the test reference surface; the two measuring guide rails are perpendicular to the test reference surface and parallel to the scale guide rail on the device body; the component sliding cursor is sleeved on the outside of the measuring guide rail and can slide longitudinally along the measuring guide rail.

[0014] In the sit-and-reach test device as described above, the straight measurement component is a flexible film with measurement scales on both sides, the flexible film is fixed to one side of the lower part of the foot support plate, the lower end surface of the flexible film and the lower end surface of the horizontal support plate are on the same horizontal plane; there are centimeter and millimeter measurement scales on both sides of the upper end surface of the flexible film, the 0 scale line of the measurement scale is flush with the test reference plane; the scale direction of the measurement scale is perpendicular to the test reference plane and parallel to the ruler guide rail.

[0015] As a preferred solution, the thickness of the flexible film is 2-8 mm.

[0016] A sit-and-reach test method using any of the above-mentioned test devices comprises the following steps:

[0017] 1) Measure the finger-to-heel distance in the straight state: the person being tested lies flat with the soles of the feet close to the test reference plane. The person being tested places his arms flat on both sides of the trunk and stretches them toward the toes, with the fingertips pointing toward the toes. The distance from the fingertips to the shoulder joint is the arm length, and the distance from the shoulder joint to the hip joint is the trunk length; the distance from the hip joint to the test reference plane is the leg length. At this time, the finger-to-heel distance in the straight state = trunk length + leg length - arm length.

[0018] When the straight measurement component in the testing device is a measuring guide rail, the fingertips of the arm of the person being tested push the component sliding cursor toward the toes until it can no longer be pushed forward. At this time, the scale value indicated by the position where the component sliding cursor stops is the finger-to-heel distance in the straight state.

[0019] When the straightness measurement component in the test device is a flexible film, the person being tested lies flat on the flexible film with the soles of the feet close to the test reference plane, the arms are placed flat on both sides of the torso and stretched toward the toes, and the fingertips of the arms are placed flat on the measurement scale. At this time, the scale value indicated by the position of the fingertips of the arms is observed and recorded, which is the finger-to-heel distance in the straight state.

[0020] 2) Measure the finger-to-heel distance in the bent state: the person being tested raises his upper body from a supine position, keeps the soles of his feet close to the test reference plane, bends his torso toward his legs, raises his arms horizontally and stretches toward his toes, and uses the fingertips of both arms to push the main body sliding cursor forward at the same time until it can no longer be pushed forward; the angle between the line connecting the shoulder joint to the hip joint and the horizontal reference line is the bending angle α; at this time, the scale value indicated by the position where the main body sliding cursor stops is the finger-to-heel distance in the bent state, and at this time, the finger-to-heel distance in the bent state = arm length + torso length • cos α - leg length.

[0021] 3) If the heel-to-heel distance of the left and right arms is more than 2 mm, take the average value of the two.

[0022] 4) The sum of the finger-to-heel distance in the straight state and the finger-to-heel distance in the bent state is the sit-and-reach test score, that is, the sit-and-reach test score = the finger-to-heel distance in the straight state + the finger-to-heel distance in the bent state, that is, the test score of the simplified sit-and-reach test method = trunk length•(1+cosα).

[0023] It can be seen from the above formula that the test results of the sit-and-reach test method adopted in the present invention are independent of the arm length and leg length of the tested person, but are only related to the trunk length and the bending angle α, thereby improving the scientificity and fairness of the sit-and-reach test results.

[0024] The beneficial effect of the present invention is that the test results of the test method of the present invention are independent of the arm length and leg length of the person being tested, thereby improving the scientificity and fairness of the test results of the sit-and-reach test. The device of the present invention can conveniently and accurately obtain the test data of the finger-heel distance in the straight state and the finger-heel distance in the bent state during a single test, thereby saving the test time. The straight measurement component can be conveniently combined with the commonly used sit-and-reach test device to form a device that can simultaneously measure the finger-heel distance in the straight state and the finger-heel distance in the bent state. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The figure is a structural schematic diagram of a currently commonly used sit-and-reach test device.

[0026] Figure 2 This is a schematic diagram of the currently commonly used sit-and-reach test method.

[0027] Figure 3It is a schematic diagram of the sitting forward flexion test method adopted by the present invention in a straight state.

[0028] Figure 4 It is a structural schematic diagram of the straight measurement component of the present invention when it is an embodiment of a measurement guide rail.

[0029] Figure 5 for Figure 4 Schematic diagram of the test method when the device is in use.

[0030] Figure 6 It is a schematic structural diagram of an embodiment of the flat measurement component of the present invention when it is a flexible film.

[0031] Figure 7 for Figure 6 Schematic diagram of the test method when the device is in use.

[0032] Figure 8 It is a schematic diagram of the storage method when the flat measuring component of the present invention is a flexible film.

[0033] Description of reference numerals:

[0034] 1- Finger-heel distance in bending state 2- Finger-heel distance in straight state 3- Test reference surface 4- Leg length

[0035] 5- Hip joint 6- Trunk length 7- Line 8- Shoulder joint 9- Arm length 10- Fingertips

[0036] 11-Device body 11-2-Body scale mark 11-3-Body sliding cursor 11-4-Scale guide rail

[0037] 11-5-Horizontal support plate 11-6-Support reinforcement plate 15-Test person 21-Measurement guide rail

[0038] 22-Component sliding cursor 23-Measurement scale 24-Flexible film DETAILED DESCRIPTION

[0039] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0040] Example 1

[0041] like Figure 4 The sitting forward flexion testing device of the present invention shown in the figure comprises a device body 11 and two measuring guide rails 21 with component sliding cursors 22 .

[0042] The measuring guide rails 21 are fixed on both sides of the device body 11; the lower end surface of the measuring guide rails 21 is on the same horizontal plane as the lower end surface of the horizontal support plate 11-5 of the device body 11; the upper end surface of the measuring guide rails 21 has centimeters and millimeters of measuring scales 23; the 0 scale line of the measuring scale 23 is flush with the test reference plane 3; the two measuring guide rails 21 are perpendicular to the test reference plane 3 and are parallel to the scale rails 11-4 of the commonly used sitting forward flexion test device body 11; the component sliding cursor 22 is mounted on the outside of the measuring guide rails 21 and can slide longitudinally along the measuring guide rails 21.

[0043] like Figure 5 As shown, the person under test 15 lies flat with the soles of the feet close to the test reference surface 3. The arms are placed flat on both sides of the trunk and stretched toward the toes. The fingertips 10 of the arms push the component sliding cursor 22 toward the toes until it can no longer be pushed forward. At this time, the scale value indicated by the position where the component sliding cursor 22 stops is the straight state finger-to-heel distance 2. During the test, the positions where the fingertips 10 of the left and right arms push the component sliding cursor 22 to stop are as flush as possible. If the difference between the straight state finger-to-heel distances 2 of the left and right arms is more than 2 mm, the average value of the two is taken.

[0044] At this time, the straight state refers to the heel distance 2 = torso length 6 + leg length 4 - arm length 9.

[0045] Then as Figure 2 The test subject 15 is in the posture shown, and the finger-to-heel distance 1 in the bending state is measured according to the commonly used sitting forward bending test method. Figure 5 In the lying position shown, the upper body is raised, the sole of the foot is kept close to the test reference surface 3, the trunk is bent toward the legs, the arms are raised horizontally and stretched toward the toes, and the fingertips of the two arms simultaneously push the body sliding cursor 11-3 forward until it can no longer be pushed forward. At this time, the scale value indicated by the position where the body sliding cursor 11-3 stops is the finger-to-heel distance 1 in the bent state.

[0046] At this time, the bent state refers to the heel distance 1 = arm length 9 + trunk length 6•cosα-leg length 4.

[0047] The sum of the finger-to-heel distance 2 in the straight state and the finger-to-heel distance 1 in the bent state is the sitting forward flexion test score of the present invention.

[0048] The test result of the sitting forward flexion test method of the present invention=straight state finger-heel distance 2+bent state finger-heel distance 1.

[0049] After simplification, the test result of the sit-and-reach test method adopted by the present invention = trunk length 6•(1+cosα).

[0050] Therefore, the test results of the test method for sitting forward flexion of the present invention are independent of the arm length 9 and the leg length 4.

[0051] The device shown in this embodiment can be used to obtain the value of the finger-heel distance 2 in the straight state more conveniently and accurately, and the value of the finger-heel distance 2 in the straight state can also be obtained after the fingertip 10 of the arm leaves the measuring guide rail 21.

[0052] Example 2

[0053] like Figure 6 As shown, the sitting forward flexion testing device of the present invention comprises a device body 11 and a flexible film 24 with measuring scales 23 on both sides.

[0054] The flexible film 24 is fixed to one side of the lower part of the foot support plate 11-1 of the commonly used sit-and-reach test device body 11, and the lower end surface of the flexible film 24 is on the same horizontal plane as the lower end surface of the horizontal support plate 11-5 of the device body 11; there are centimeter and millimeter measurement scales 23 on both sides of the upper end surface of the flexible film 24, and the 0 scale line of the measurement scale 23 is flush with the test reference plane 3; the scale direction of the measurement scale 23 is perpendicular to the test reference plane 3 and is parallel to the scale guide rail 11-4 of the device body 11.

[0055] like Figure 7 As shown, the person under test 15 lies flat on the flexible film 24, with the soles of the feet close to the test reference surface 3. The arms are placed flat on both sides of the trunk and stretched toward the toes, and the fingertips 10 of the arms are placed flat on the measuring scale 23. At this time, the scale value indicated by the position of the fingertips 10 of the arms is observed and recorded as the straight state finger-to-heel distance 2. During the test, the positions of the fingertips 10 of the left and right arms are as flush as possible. If the difference between the straight state finger-to-heel distances 2 of the left and right arms is more than 2 mm, the average value of the two is taken.

[0056] At this time, the straight state refers to the heel distance 2 = torso length 6 + leg length 4 - arm length 9.

[0057] Then press Figure 2 The test subject 15 is in the posture shown, and the finger-to-heel distance 1 in the bending state is measured according to the commonly used sitting forward bending test method. Figure 5 In the lying position shown, the upper body is raised, the sole of the foot is kept close to the test reference surface 3, the trunk is bent toward the legs, the arms are raised horizontally and stretched toward the toes, and the fingertips of the two arms simultaneously push the body sliding cursor 11-3 forward until it can no longer be pushed forward. At this time, the scale value indicated by the position where the body sliding cursor 11-3 stops is the finger-to-heel distance 1 in the bent state.

[0058] At this time, the bent state refers to the heel distance 1 = arm length 9 + trunk length 6•cosα-leg length 4.

[0059] The sum of the finger-to-heel distance 2 in the straight state and the finger-to-heel distance 1 in the bent state is the sitting forward flexion test score of the present invention.

[0060] The test result of the sitting forward flexion test method of the present invention=straight state finger-heel distance 2+bent state finger-heel distance 1.

[0061] After simplification, the test result of the sit-and-reach test method adopted by the present invention = trunk length 6•(1+cosα).

[0062] Therefore, the test results of the test method for sitting forward flexion of the present invention are independent of the arm length 9 and the leg length 4.

[0063] The flexible film 24 in the device of this embodiment has a thickness of 3 mm and can be rolled up as shown in FIG. Figure 8 As shown, easy to carry and store.

Claims

1. A sitting forward flexion test device, comprising a device body (11) and a flatness measurement assembly, wherein the device body (11) comprises a foot support plate (11-1), a body scale mark (11-2), a body sliding cursor (11-3), a scale guide rail (11-4), a horizontal support plate (11-5), a support reinforcement plate (11-6) and a test reference surface (3), characterized in that: The straightness measuring assembly comprises two measuring rails (21) fixed to both sides of a device body (11) and provided with a component sliding cursor (22); the lower end surface of the measuring rail (21) is on the same horizontal plane as the lower end surface of a horizontal support plate (11-5) on the device body (11); the upper end surface of the measuring rail (21) is provided with centimeter and millimeter measuring scales (23); the 0 scale line of the measuring scale (23) is flush with the test reference surface (3); the two measuring rails (21) are perpendicular to the test reference surface (3) and are parallel to the scale rails (11-4) on the device body (11); and the component sliding cursor (22) is sleeved on the outside of the measuring rails (21).

2. A sitting forward flexion test device, comprising a device body (11) and a flatness measurement assembly, wherein the device body (11) comprises a foot support plate (11-1), a body scale mark (11-2), a body sliding cursor (11-3), a scale guide rail (11-4), a horizontal support plate (11-5), a support reinforcement plate (11-6) and a test reference surface (3), characterized in that: The flat measurement component is a flexible film (24) with measurement scales (23) on both sides. The flexible film (24) is fixed to one side of the lower part of the foot support plate (11-1). The lower end surface of the flexible film (24) is on the same horizontal plane as the lower end surface of the horizontal support plate (11-5). The upper end surface of the flexible film (24) has centimeter and millimeter measurement scales (23) on both sides. The 0 scale line of the measurement scale (23) is flush with the test reference surface (3). The scale direction of the measurement scale (23) is perpendicular to the test reference surface (3) and parallel to the ruler guide rail (11-4).

3. The sit-and-forth flexion test device according to claim 2, characterized in that: The thickness of the flexible film (24) is 2-8 mm.

4. A sit-and-reach test method using the test device according to any one of claims 1 to 3, characterized in that The following steps are involved: 1) Measuring the finger-to-heel distance (2) in a straight state: the person being tested (15) lies flat with the soles of the feet close to the test reference plane (3). The arms of the person being tested (15) are placed flat on both sides of the trunk and stretched toward the toes, with the fingertips (10) pointing toward the toes. The distance from the fingertips (10) to the shoulder joint (8) is the arm length (9), and the distance from the shoulder joint (8) to the hip joint (5) is the trunk length (6); the distance from the hip joint (5) to the test reference plane (3) is the leg length (4); at this time, the finger-to-heel distance (2) in a straight state = the trunk length (6) + the leg length (4) - the arm length (9); 2) Measuring the finger-to-heel distance (1) in the bent state: the person being tested (15) raises his upper body from a lying position, keeps the sole of his foot close to the test reference plane (3), bends his trunk toward his legs, raises his arms horizontally and stretches them toward his toes, and simultaneously pushes the body sliding cursor (11-3) forward with the fingertips (10) of both arms until it can no longer be pushed forward; the angle between the line (7) from the shoulder joint (8) to the hip joint (5) and the horizontal reference line is the bending angle α; at this time, the scale value indicated by the position where the body sliding cursor (11-3) stops is the finger-to-heel distance (1) in the bent state, and at this time, the finger-to-heel distance (1) in the bent state = arm length (9) + trunk length (6)·cosα-leg length (4); 3) If the difference between the heel-to-heel distance (2) of the left and right arms is more than 2 mm, take the average of the two; 4) The sum of the finger-to-heel distance in the straight state (2) and the finger-to-heel distance in the bent state (1) is the sit-and-reach test score, that is, the sit-and-reach test score = the finger-to-heel distance in the straight state (2) + the finger-to-heel distance in the bent state (1), that is, the test score of the simplified sit-and-reach test method = trunk length (6)·(1+cosα).

5. The sit-and-forth flexion test method according to claim 4, characterized in that: When the straight measurement component in the test device is a measuring guide rail (21), the fingertips (10) of the arm of the person being tested (15) push the component sliding cursor (22) toward the toes until it can no longer be pushed forward. At this time, the scale value indicated by the position where the component sliding cursor (22) stops is the finger-to-toe distance (2) in the straight state.

6. The sit-and-forth flexion test method according to claim 4, characterized in that: When the straightness measurement component in the test device is a flexible film (24), the person being tested (15) lies flat on the flexible film (24), with the soles of the feet close to the test reference surface (3), the arms are placed flat on both sides of the trunk and stretched towards the toes, and the fingertips (10) of the arms are placed flat on the measurement scale (23). At this time, the scale value indicated by the position of the fingertips (10) of the arms is observed and recorded, which is the finger-to-heel distance (2) in the straight state.

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