CN105935488A - Sit-and-reach and sit-up tester for physical education and use method - Google Patents

Sit-and-reach and sit-up tester for physical education and use method Download PDF

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Publication number
CN105935488A
CN105935488A CN201610460040.3A CN201610460040A CN105935488A CN 105935488 A CN105935488 A CN 105935488A CN 201610460040 A CN201610460040 A CN 201610460040A CN 105935488 A CN105935488 A CN 105935488A
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CN
China
Prior art keywords
sit
tester
testing
photocell
base plate
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Granted
Application number
CN201610460040.3A
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Chinese (zh)
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CN105935488B (en
Inventor
沈永根
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Shandong Deyang New Materials Co ltd
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Anqing Haina Information Technology Co Ltd
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Priority to CN201610460040.3A priority Critical patent/CN105935488B/en
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    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B71/00Games or sports accessories not covered in groups A63B1/00 - A63B69/00
    • A63B71/06Indicating or scoring devices for games or players, or for other sports activities
    • A63B71/0619Displays, user interfaces and indicating devices, specially adapted for sport equipment, e.g. display mounted on treadmills
    • A63B71/0622Visual, audio or audio-visual systems for entertaining, instructing or motivating the user
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B23/00Exercising apparatus specially adapted for particular parts of the body
    • A63B23/02Exercising apparatus specially adapted for particular parts of the body for the abdomen, the spinal column or the torso muscles related to shoulders (e.g. chest muscles)
    • A63B23/0205Abdomen
    • A63B23/0211Abdomen moving torso with immobilized lower limbs
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B23/00Exercising apparatus specially adapted for particular parts of the body
    • A63B23/02Exercising apparatus specially adapted for particular parts of the body for the abdomen, the spinal column or the torso muscles related to shoulders (e.g. chest muscles)
    • A63B23/0244Exercising apparatus specially adapted for particular parts of the body for the abdomen, the spinal column or the torso muscles related to shoulders (e.g. chest muscles) with signalling or indicating means, e.g. of incorrect posture, for deep-breathing exercises
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B23/00Exercising apparatus specially adapted for particular parts of the body
    • A63B2023/006Exercising apparatus specially adapted for particular parts of the body for stretching exercises
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B71/00Games or sports accessories not covered in groups A63B1/00 - A63B69/00
    • A63B71/06Indicating or scoring devices for games or players, or for other sports activities
    • A63B71/0619Displays, user interfaces and indicating devices, specially adapted for sport equipment, e.g. display mounted on treadmills
    • A63B71/0622Visual, audio or audio-visual systems for entertaining, instructing or motivating the user
    • A63B2071/0625Emitting sound, noise or music
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B71/00Games or sports accessories not covered in groups A63B1/00 - A63B69/00
    • A63B71/06Indicating or scoring devices for games or players, or for other sports activities
    • A63B71/0619Displays, user interfaces and indicating devices, specially adapted for sport equipment, e.g. display mounted on treadmills
    • A63B2071/0658Position or arrangement of display
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2220/00Measuring of physical parameters relating to sporting activity
    • A63B2220/10Positions
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2220/00Measuring of physical parameters relating to sporting activity
    • A63B2220/17Counting, e.g. counting periodical movements, revolutions or cycles, or including further data processing to determine distances or speed

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Biomedical Technology (AREA)
  • Neurology (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Multimedia (AREA)
  • Human Computer Interaction (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

The invention relates to a sit-and-reach and sit-up tester for physical education and a use method. The tester comprises a connecting plate and a testing mechanism which are connected through a dovetail and a dovetail groove in a matched mode, and the connecting plate and the testing mechanism are connected during the testing process and can be disassembled after testing is completed; the testing mechanism comprises adjusting knobs, rotating panels and phototubes, the phototubes are used for counting, the adjusting knobs can adjust angles of the rotating panels, and therefore the testing mechanism can be used for counting of sit-and-reach and sit-ups of a testee. According to the sit-and-reach and sit-up tester for physical education and the use method, the problems that for sit-and-reach and sit-up testing, missing counting and wrong counting are prone to occur for artificial counting, an existing testing instrument is inaccurate in testing result and low in utilization rate are solved, the automatic counting function is achieved when sit-and-reach and sit-up testing is conducted, and the advantages of being accurate in counting result and high in instrument utilization rate are achieved.

Description

A kind of physical culture sitting body anteflexion and type register for sit-ups and using method
Technical field
The present invention relates to athletic sports appliance technical field, particularly to a kind of physical culture sitting body anteflexion and type register for sit-ups And using method.
Background technology
Passing the examination in China is annual, PE testing is all to examine a few link, wherein sitting body anteflexion and abdominal crunch Being a traditional important test event, traditional sitting body anteflexion and abdominal crunch counting are all by manually operating, and manually count Number also exists the problem of the repeat count that counter should be noted that power concentrates, easily occurs that leakage meter is wrong and counts;
Currently also occur in that some for the instrument that sitting body anteflexion or abdominal crunch count, such as China Patent No. A kind of intelligent-induction formula sitting body anteflexion tester that CN204181619U is announced, it utilizes tester's hand push push pedal measurement to push away The distance entered, there is the easy instantaneous acceleration of tester and promotes push pedal, and push pedal forward travel distance is distal to tester's health reality forward Distance so that test result is not accurate enough;In addition with some test instrunments, but they are required for individually testing seat body Anteflexion and abdominal crunch so that test instrunment utilization rate is the highest.
Summary of the invention
In order to solve the problems referred to above, the invention provides a kind of physical culture sitting body anteflexion and type register for sit-ups and using method, Solve sitting body anteflexion and abdominal crunch test artificial counting easily leaks meter mistake meter, existing test instrunment also exists test result not The difficult problems such as accurate and test instrunment utilization rate is low, it is achieved that the function automatically counted when sitting body anteflexion and abdominal crunch test, tool There is the advantage that count results is accurate, instrument utilization rate is high.
To achieve these goals, the present invention realizes by the following technical solutions: a kind of physical culture sitting body anteflexion and having lain on the back Sit tester, including: connecting plate and mechanism for testing, described connecting plate is quality of rubber materials, is provided with dovetail, described Being provided with dovetail groove on mechanism for testing, described connecting plate is connected with dovetail groove by dovetail with mechanism for testing, described company Fishplate bar and mechanism for testing connect when test, detachable after test;
Described mechanism for testing includes: loudspeaker, T-shaped link, bracing frame, adjusting knob, deep gouge, controller, base plate, Connect sheet, support platform, upper plate, rotating panel, photocell, counterbore, support column, foot hook, connecting rod, dovetail groove, fastening Knob, anchor ear, battery, panel, liquid crystal display screen and card-brushing groove, described loudspeaker are connected with T-shaped link, described loudspeaker For real-time broadcasting tester's sitting body anteflexion or the number of abdominal crunch, described T-shaped link is connected with base plate by screw Connecing, described bracing frame is connected with base plate by screw, and described connecting rod is connected by axis hole matched in clearance with bracing frame, Described adjusting knob is connected by threaded engagement with bracing frame, and described connecting rod side is provided with deep gouge, described regulation rotation Button uses with deep gouge matched in clearance, and described adjusting knob is for regulating the up and down motion of connecting rod, described tightening knob and company Extension bar is threaded connection, and described rotating panel is connected with described connecting rod by tightening knob, described tightening knob For regulating the angle residing for rotating panel, described rotating panel being provided with two row's counterbores, described photocell includes photoelectricity Pipe transmitting terminal and photocell receiving terminal, described photocell transmitting terminal and photocell receiving terminal are symmetrically arranged at the both sides surfaces of revolution In counterbore on plate, when there being object to shelter from photocell transmitting terminal and photocell receiving terminal, photocell receiving terminal can export one The signal of change, described variable signal can be gathered by controller, described photocell for tester's sitting body anteflexion or Counting during abdominal crunch test, described controller is fixed by screws on base plate, and described controller is used for processing photocell Signal, control liquid crystal display screen and card using information, described battery is fixed on base plate by anchor ear, and described battery is for system Power supply, described support column lower end is connected by threaded engagement with base plate, and described support column upper end and upper plate are solid by bolt Fixed connection, described upper plate supports both hands, described foot hook and described bracing frame phase when tester's sitting body anteflexion is tested Be connected, described foot be hooked in sitting body anteflexion test time for stopping the both feet of tester, foot be hooked in abdominal crunch test time for Hook the both feet of tester.
As a preferred technical solution of the present invention, MSP430 single-chip microcomputer selected by described controller.
Sheet is connected with base plate by screw, described support platform is fixedly connected with being connected sheet, described panel and institute in described connection The support platform stated is connected, and described panel is provided with liquid crystal display screen and card-brushing groove, and described liquid crystal display screen is for showing the body of tester Part information and test result, described card-brushing groove is for the identity information of the read test person that swipes the card.
A kind of physical culture sitting body anteflexion and the using method of type register for sit-ups: before test, lead to connecting plate and mechanism for testing Cross dovetail to be connected with dovetail groove;During test, opening instrument, first tester swipes the card in card-brushing groove and imports tester's identity Information, then sits down on connecting plate, both feet flat contact foot hook, is stoped the both feet advance of tester by foot hook, then surveys Examination person proceeds by sitting body anteflexion test, when tester's both hands block forward the photocell in residing region, the photoelectricity in this region Pipe can be triggered output signal, and controller is converted to distance at this after collecting signal, by loudspeaker real-time broadcasting, and by control Device processed preserves information, and in liquid crystal screen display;Then by the height of adjusting knob regulation connecting rod, adjusted by tightening knob Joint rotating panel is to reverse position, and then tester proceeds by abdominal crunch test, and tester hooks both feet with foot hook, starts Motion, measuring principle is identical with sitting body anteflexion test philosophy.
The beneficial effects of the present invention is: a kind of physical culture sitting body anteflexion and type register for sit-ups and using method, solve Sitting body anteflexion and abdominal crunch test artificial counting easily leak meter mistake meter, existing test instrunment also exist test result inaccurate and The difficult problems such as test instrunment utilization rate is low, it is achieved that the function automatically counted when sitting body anteflexion and abdominal crunch test, have counting The advantage that result is accurately, instrument utilization rate is high.
Accompanying drawing explanation
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of the present invention;
Fig. 2 is the mechanism for testing structural representation one of the present invention;
Fig. 3 is the mechanism for testing structural representation two of the present invention;
Fig. 4 is the present invention structural representation when carrying out abdominal crunch test.
Specific embodiment
For the technological means making the present invention realize, creation characteristic, reach purpose and be easy to understand with effect, below in conjunction with tool Body illustrates, and the present invention is expanded on further.It should be noted that in the case of not conflicting, the embodiment in the application and enforcement Feature in example can be combined with each other.
Such as Fig. 1, shown in Fig. 2, a kind of physical culture sitting body anteflexion and type register for sit-ups, including: connecting plate 1 and test Mechanism 2, described connecting plate 1 is quality of rubber materials, is provided with dovetail, described mechanism for testing 2 is provided with dovetail groove 217, described connecting plate 1 is connected with dovetail groove 217 by dovetail with mechanism for testing 2, described connecting plate 1 and test Mechanism 2 connects when test, detachable after test;
Such as Fig. 2, shown in Fig. 3, described mechanism for testing 2 includes: loudspeaker 201, T-shaped link 202, bracing frame 203, Adjusting knob 204, deep gouge 205, controller 206, base plate 207, connection sheet 208, support platform 209, upper plate 210, rotation Panel 211, photocell 212, counterbore 213, support column 214, foot hook 215, connecting rod 216, dovetail groove 217, fastening rotation Button 218, anchor ear 219, battery 220, panel 221, liquid crystal display screen 223 and card-brushing groove 222, described loudspeaker 201 are with T-shaped Link 202 is connected, and described loudspeaker 201 are for real-time broadcasting tester's sitting body anteflexion or the number of abdominal crunch, institute The T-shaped link 202 stated is connected with base plate 207 by screw, and described bracing frame 203 is by screw and base plate 207 phase Connecting, described connecting rod 216 is connected by axis hole matched in clearance with bracing frame 203, described adjusting knob 204 and support Frame 203 is connected by threaded engagement, and described connecting rod 216 side is provided with deep gouge 205, described adjusting knob 204 with Deep gouge 205 matched in clearance uses, and described adjusting knob 204 is for regulating the up and down motion of connecting rod 216, described fastening Knob 218 is threaded connection with connecting rod 216, and described rotating panel 211 is by tightening knob 218 and described connection Bar 216 is connected, and described tightening knob 218 is for regulating the angle residing for rotating panel 211, described rotating panel 211 On be provided with two row's counterbores 213, described photocell 212 includes photocell transmitting terminal and photocell receiving terminal, described photoelectricity Pipe transmitting terminal and photocell receiving terminal are symmetrically arranged in the counterbore 213 on both sides rotating panel 211, block when there being object When living photocell transmitting terminal and photocell receiving terminal, photocell receiving terminal can export the signal of a change, and described signal is permissible Gathered by controller 206, counting when described photocell 212 is for testing tester's sitting body anteflexion or abdominal crunch, institute The controller 206 stated is fixed by screws on base plate 207, described controller 206 for process photocell 212 signal, Controlling liquid crystal display screen 223 and card using information, described battery 220 is fixed on base plate 207 by anchor ear 219, described battery 220 power supplies being used for system, described support column 214 lower end is connected by threaded engagement with base plate 207, described support column 214 upper ends are bolted to connection with upper plate 210, and described upper plate 210 supported when tester's sitting body anteflexion is tested Both hands, described foot hook 215 is fixedly connected with described bracing frame 203, and described foot hook 215 is used when sitting body anteflexion is tested In the both feet of stop tester, foot hook 215 is used for hooking the both feet of tester when abdominal crunch is tested.
As a preferred technical solution of the present invention, MSP430 single-chip microcomputer selected by described controller 206.
The described sheet 208 that connects by screw is connected with base plate 207, described support platform 209 is fixedly connected with being connected sheet 208, Described panel 221 is connected with described support platform 209, and described panel 221 is provided with liquid crystal display screen 223 and card-brushing groove 222, Described liquid crystal display screen 223 is for showing identity information and the test result of tester, and described card-brushing groove 222 is used for reading of swiping the card The identity information of tester.
As shown in Figure 4, a kind of physical culture sitting body anteflexion and the using method of type register for sit-ups: before test, by connecting plate 1 and mechanism for testing 2 be connected with dovetail groove 217 by dovetail;During test, opening instrument, tester is first at card-brushing groove Swiping the card in 222 and import tester's identity information, then sit down on connecting plate 1, both feet flat contact foot hook 215, by foot hook The 215 both feet advances stoping tester, then tester proceeds by sitting body anteflexion test, when tester's both hands block forward During the photocell 212 in residing region, the photocell 212 in this region can be triggered output signal, and controller 206 collects signal After be converted to distance at this, by loudspeaker 201 real-time broadcasting, and preserve information by controller 206, and at liquid crystal display screen 223 Upper display;Then regulated the height of connecting rod 216 by adjusting knob 204, regulate rotating panel 211 by tightening knob 218 To reverse position, then tester proceeds by abdominal crunch test, and tester hooks both feet with foot hook 215, setting in motion, Measuring principle is identical with sitting body anteflexion test philosophy.
A kind of physical culture sitting body anteflexion and type register for sit-ups and using method, solve sitting body anteflexion and abdominal crunch surveyed The difficult problems such as examination artificial counting easily leaks meter mistake meter, existing test instrunment also exists that test result is inaccurate and test instrunment utilization rate is low, Reach the purpose automatically counted when sitting body anteflexion and abdominal crunch test.
The ultimate principle of the present invention, principal character and advantage have more than been shown and described.Skilled person will appreciate that of the industry, The present invention is not restricted to the described embodiments, the principle that the present invention is simply described of the description in above-described embodiment and description, Without departing from the spirit and scope, the present invention also has various changes and modifications, and these changes and improvements both fall within In scope of the claimed invention.Claimed scope is defined by appending claims and equivalent thereof.

Claims (4)

1. a physical culture sitting body anteflexion and type register for sit-ups, it is characterised in that: include connecting plate (1) and mechanism for testing (2), described connecting plate (1) is provided with dovetail, described mechanism for testing (2) is provided with dovetail groove (217), described company Fishplate bar (1) is connected with dovetail groove (217) by dovetail with mechanism for testing (2);
Described mechanism for testing (2) including: loudspeaker (201), T-shaped link (202), bracing frame (203), adjusting knob (204), Deep gouge (205), controller (206), base plate (207), connect sheet (208), support platform (209), upper plate (210), rotating panel (211), Photocell (212), counterbore (213), support column (214), foot hook (215), connecting rod (216), dovetail groove (217), fastening rotation Button (218), anchor ear (219), battery (220), panel (221), liquid crystal display screen (223) and card-brushing groove (222), described loudspeaker (201) Being connected with T-shaped link (202), described T-shaped link (202) is connected with base plate (207) by screw, and described props up Support (203) is connected with base plate (207) by screw, and described connecting rod (216) is joined by axis hole gap with bracing frame (203) Closing and connect, described adjusting knob (204) is connected by threaded engagement with bracing frame (203), and described connecting rod (216) side sets Being equipped with deep gouge (205), described adjusting knob (204) uses with deep gouge (205) matched in clearance, described tightening knob (218) with Connecting rod (216) is threaded connection, and described rotating panel (211) is by tightening knob (218) and described connecting rod (216) Be connected, described rotating panel (211) be provided with counterbore (213), described photocell (212) include photocell transmitting terminal and Photocell receiving terminal, described photocell transmitting terminal and photocell receiving terminal are symmetrically arranged on both sides rotating panel (211) In counterbore (213), described controller (206) is fixed by screws on base plate (207), and described battery (220) passes through anchor ear (219) being fixed on base plate (207), described support column (214) lower end is connected by threaded engagement with base plate (207), described Support column (214) upper end is bolted to connection with upper plate (210), described foot hook (215) and described bracing frame (203) phase It is connected;Described connection sheet (208) by screw be connected with base plate (207), described support platform (209) be connected sheet (208) Being fixedly connected with, described panel (221) is connected with described support platform (209), and described panel (221) is provided with liquid crystal display screen (223) With card-brushing groove (222).
A kind of physical culture sitting body anteflexion the most according to claim 1 and type register for sit-ups, it is characterised in that: described Connecting plate (1) be quality of rubber materials.
A kind of physical culture sitting body anteflexion the most according to claim 1 and type register for sit-ups, it is characterised in that: described Controller (206) select MSP430 single-chip microcomputer.
4. physical culture sitting body anteflexion and a using method for type register for sit-ups, uses the device as shown in claim 1, It is characterized in that the method is specifically: before test, connecting plate (1) and mechanism for testing (2) are coordinated with dovetail groove (217) by dovetail Connect;During test, opening instrument, first tester swipes the card in card-brushing groove (222) and imports tester's identity information, then even Fishplate bar is sat down on (1), both feet flat contact foot hook (215), is stoped the both feet advance of tester by foot hook (215), then tests Person proceeds by sitting body anteflexion test, when tester's both hands block forward photocell (212) in residing region, the light in this region Fulgurite (212) can be triggered output signal, and controller (206) is converted to distance at this after collecting signal, by loudspeaker (201) Real-time broadcasting, and preserve information by controller (206), and in the upper display of liquid crystal display screen (223);Then by adjusting knob (204) The height of regulation connecting rod (216), by tightening knob (218) regulation rotating panel (211) to reverse position, then tester opens Beginning to carry out abdominal crunch test, tester hooks both feet, setting in motion with foot hook (215), and measuring principle is tested with sitting body anteflexion Principle is identical.
CN201610460040.3A 2016-06-22 2016-06-22 A kind of sport sitting body anteflexion and type register for sit-ups and application method Active CN105935488B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107320107A (en) * 2017-08-08 2017-11-07 安徽状元郎电子科技有限公司 A kind of healthy sign detection device based on seat trunk bending forwards
CN107423572A (en) * 2017-08-08 2017-12-01 安徽状元郎电子科技有限公司 A kind of physique monitoring equipment
CN112075941A (en) * 2020-09-28 2020-12-15 山东智学网络科技有限公司 Laser ranging seat body forward bending testing device
CN114470647A (en) * 2022-02-14 2022-05-13 皖南医学院第一附属医院(皖南医学院弋矶山医院) Dual-purpose type fitness detection device for flexibility and muscle endurance

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2245472Y (en) * 1995-07-28 1997-01-22 李文义 Automatic test instrument for doing sit-ups
CN2483050Y (en) * 2001-06-15 2002-03-27 赵东红 Digital display type register for sit-ups
KR101037924B1 (en) * 2010-12-24 2011-05-30 대한센서 주식회사 A seat and reach measuring apparatus
CN204522217U (en) * 2015-04-20 2015-08-05 张楠 A kind of sit-ups subtest device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2245472Y (en) * 1995-07-28 1997-01-22 李文义 Automatic test instrument for doing sit-ups
CN2483050Y (en) * 2001-06-15 2002-03-27 赵东红 Digital display type register for sit-ups
KR101037924B1 (en) * 2010-12-24 2011-05-30 대한센서 주식회사 A seat and reach measuring apparatus
CN204522217U (en) * 2015-04-20 2015-08-05 张楠 A kind of sit-ups subtest device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107320107A (en) * 2017-08-08 2017-11-07 安徽状元郎电子科技有限公司 A kind of healthy sign detection device based on seat trunk bending forwards
CN107423572A (en) * 2017-08-08 2017-12-01 安徽状元郎电子科技有限公司 A kind of physique monitoring equipment
CN112075941A (en) * 2020-09-28 2020-12-15 山东智学网络科技有限公司 Laser ranging seat body forward bending testing device
CN114470647A (en) * 2022-02-14 2022-05-13 皖南医学院第一附属医院(皖南医学院弋矶山医院) Dual-purpose type fitness detection device for flexibility and muscle endurance

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