91 results about "Physical education" patented technology

The invention relates to the technical field of physical education management, and particularly discloses a digital informatization physical education comprehensive management system, which comprises a user interaction module, a data acquisition module, a data processing module, a system optimization module and a distributed database, the data acquisition module acquires teaching content, motion completion degree and user physiological data through a camera, a motion capture sensor and wearable equipment; the data processing module cleans and converts the data, and quantitatively evaluates whether the learning results of the students are qualified or not by using a constructed education evaluation coefficient mathematical model; the system optimization module calculates a scene optimization coefficient by analyzing a user favorable comment trend and multimedia loading performance, and automatically identifies a teaching scene needing to be optimized; the distributed database adopts a master-slave replication and fragmentation technology to improve data access efficiency and fault tolerance, digital management of physical education is achieved, and therefore the quality and efficiency of physical education are improved.

The invention discloses a motion capture method and system for physical education training based on image recognition, and the method comprises the steps: collecting a motion video image of an athlete through a multi-angle image sensor, and recognizing the body contour of the athlete in the motion video image in real time through a Center Net target detection algorithm; if detecting that the athlete extracts the key node, outputting the position of the key node; delimiting an ROI region of each key node according to a prediction result to obtain an ROI region image; and establishing a 3D attitude estimation model based on an HR-Net neural network, extracting an action trajectory of the marked region from the ROI region image, calculating biomechanical parameters based on the action trajectory, and generating personalized scores and improvement suggestions. Multi-dimensional evaluation from an absolute standard to individual differences is realized, and personalized scores and improvement suggestions are generated.

The application relates to the technical field of physical education, and discloses a sports teaching evaluation system based on artificial intelligence, which comprises a data acquisition module, a multi-target detection module, a key point modeling module, an action trajectory analysis module, a multi-modal fusion module and a dynamic feedback module. The data acquisition module receives video streams of a camera device and motion physiological data of a wearable sensor; the multi-target detection module positions targets based on a YOLOv8 algorithm; the key point modeling module constructs a three-dimensional action posture model by using an OpenPose algorithm; the action trajectory analysis module evaluates action standardization; the multi-modal fusion module integrates data to construct a multi-dimensional feature matrix; and the dynamic feedback module generates real-time scores and individualized correction instructions through an optimized LSTM network. In addition, the system also comprises a model self-adaption module, an abnormal action recognition module and a distributed computing module. The system realizes accurate evaluation of sports teaching, guarantees sports safety, promotes individualized teaching, and effectively improves the quality of sports teaching.

The application relates to the technical field of data management, in particular to an intelligent sports teaching data management method and system. The method comprises the following steps: collecting motion video stream data and inertial motion data of students; mapping a camera coordinate system of the video stream data and a body coordinate system of the inertial motion data to a world coordinate system; constructing a state space model based on an extended Kalman filter, and iteratively calculating to obtain a corrected student three-dimensional skeleton posture sequence; calculating an optimal matching path and a similarity distance between the student three-dimensional skeleton posture sequence and a standard action template sequence; and generating a quantitative action score according to the similarity distance. The application eliminates integral drift while ensuring the anti-occlusion capability by using an extended Kalman filter algorithm; meanwhile, an improved dynamic time warping algorithm is introduced, the standardization and objectivity of action quality scoring are realized, and the scientificity, safety and individualization level of sports teaching are effectively improved.

The invention discloses an intelligent psychological health education system based on an education robot. The system comprises (1) AI family-school cooperation: an improved YOLOv7 algorithm captures classroom behaviors, dynamic Gaussian blur protects privacy, directionally pushes student participation images containing desensitization IDs, supports AI to generate personalized communication verbal skills, and improves the degree of participation of parents; (2) an interdisciplinary fusion engine: constructing a knowledge graph to associate psychological courses with mathematics, sports and other subjects, predicting an optimal fusion opportunity in combination with educational administration data, and generating a double-teacher collaborative teaching plan; (3) interest and emotion driven daily penetration: analyzing student interest labels based on a latent semantic model (LFM), and triggering personalized family task pushing in combination with multi-modal emotion recognition to realize intelligent penetration of psychological health education in a family scene; and (4) full-link privacy protection: adopting differential privacy, block chain and federated learning technologies to realize'all anonymity 'and'availability and invisibility' of data, and ensuring information security through three-level desensitization and quantum encryption, so that the system meets the requirements of'personal information protection method '.

The utility model discloses a physical training device for physical education, which relates to the technical field of sports equipment and comprises a first mounting column, a second mounting column and a cross rod, positioning seats are fixedly mounted on the outer sides of the first mounting column and the second mounting column, and connecting mechanisms are fixedly mounted at two ends of the cross rod. Clamping grooves are symmetrically formed in the inner sides of the positioning seats, and the transverse rod is connected with the clamping grooves of the positioning seats between the opposite faces of the uppermost ends of the first mounting column and the second mounting column in a clamped mode through a connecting mechanism. By the adoption of the structure, when the cross rod is taken out of the positioning seat, only the two shifting blocks on the connecting shell need to be extruded at the same time, so that the shifting blocks move close to each other at the limiting holes of the baffles, and after limiting, the movable plates connected with the shifting blocks drive the clamping blocks to be separated from the clamping grooves of the positioning seat; therefore, the cross rod can be conveniently and rapidly disassembled, assembled and adjusted, and meanwhile, the situation that students move when using the cross rod can be avoided through the installation mode.

The invention relates to the technical field of data management, in particular to an intelligent physical education data management method and system. The method comprises the following steps: collecting motion video stream data and inertial motion data of a student; uniformly mapping a camera coordinate system of the video stream data and a body coordinate system of the inertial motion data to a world coordinate system; a state space model based on extended Kalman filtering is constructed, and a corrected student three-dimensional skeleton attitude sequence is obtained through iterative calculation; calculating an optimal matching path and a similarity distance between the three-dimensional skeleton posture sequence of the student and the standard action template sequence; and according to the similarity distance, generating a quantized action score. According to the invention, by using the extended Kalman filtering algorithm, integral drift is eliminated while the anti-shielding capability is ensured; meanwhile, an improved dynamic time warping algorithm is introduced, standardized and objective scoring of the motion quality is achieved, and the scientificity, safety and individuation level of physical education are effectively improved.

The invention discloses ball serving equipment for physical education training, belongs to the technical field of physical training, and aims to solve the problems that continuous feeding is interrupted and impurity particles on the surface of a tennis ball splash to a training area at a relatively high speed due to friction clamping stagnation of the tennis ball in a funnel due to a stacking effect. The device comprises a moving vehicle and an adjusting seat arranged on one side of the moving vehicle, a launching cylinder is fixedly installed on one side of the adjusting seat, and a launching piece is arranged at one end of the launching cylinder. Through the double-pushing design that the launching piece is in linkage with an elastic jacking piece, the phenomena of accumulation clamping stagnation and bridging of tennis balls in a discharging piece are effectively broken through; in the ball pushing process of the pushing piece, impurities on the surfaces of the tennis balls are separated under the action of extrusion and friction and are collected into the collecting box in a centralized mode through the discharging holes, and the safety accidents that the impurities splash along with high-speed tennis ball launching, skin scratching, foreign matter entering eyes and the like are avoided.

1. Name of the product in this design: Sports Teaching Operation Demonstration Device. 2. Purpose of this design: for physical education teaching. 3. The key design features of this product are the combination of shape and pattern. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The invention discloses a first-aid alarm whistle ring device for a campus physical education class, and belongs to the field of first-aid alarm. Comprising a shell, an annular groove is formed in the lower surface of the shell, a mounting plate is arranged on the inner side of the annular groove, a power source is fixedly connected to the upper surface of the mounting plate, and a controller is fixedly connected to the position, located on the left side of the power source, of the upper surface of the mounting plate; a positioner is fixedly connected to the upper surface of the mounting plate and located on the right side of the power supply; according to the device, through the synergistic effect of the core function module, the alarming and positioning functions can be triggered in time when an accident occurs in a physical education class, the audible and visual alarm can quickly attract surrounding attention through double warning of sound and light, the synchronous positioning function can accurately collect the accident occurrence position and push the accident occurrence position to a rescue worker terminal, manual running for notification is not needed, and the working efficiency is improved. The problems that a traditional emergency call mode is low in efficiency and fuzzy in positioning are effectively solved, precious time is won for timely treatment of injured students, and the injury aggravation risk is reduced.

The invention discloses a dance movement testing method, device and equipment based on distributed acoustic optical fibers, a medium and a product, and relates to the technical field of dance movement assistance, and the method comprises the steps: collecting a vibration signal transmitted by a dancer through a pre-constructed dance floor; key features in the vibration signals are extracted, dance motion analysis is conducted on the vibration signals through a signal analysis algorithm on the basis of the key features, and an analysis result is obtained. Therefore, when the dancer dances, the vibration signals sent by the dancer are collected through the pre-constructed dancing floor, then the key features in the vibration signals are extracted, and based on the extracted key features, dancing motion analysis is carried out on the vibration signals through a signal analysis algorithm, so that an analysis result of the motion accuracy of the dancer is obtained. The problem that the actions of the dancer cannot be accurately evaluated and analyzed in a digital sports classroom is solved, and the accuracy of dance action analysis is improved.

The utility model discloses a throwing training device with a motion monitoring function, which belongs to the technical field of sports event training devices, and comprises a motion support frame and a height adjusting slideway, a motion shaft is connected between the motion support frame and the height adjusting slideway, the motion shaft is obliquely arranged, the motion shaft is sleeved with a motion handle, and the motion handle is connected with the height adjusting slideway. The motion handle is a pipeline type sliding pipe, the motion handle penetrates through the motion shaft and can slide along the motion shaft, a wireless motion posture monitoring module is arranged in the motion handle, the wireless motion posture monitoring module is used for monitoring the accelerated speed of the motion handle, the wireless motion posture monitoring module is connected with a microcontroller, and the microcontroller is connected with the motion shaft. The microcontroller is connected with a wireless transmission module, a throwing data monitoring device and a data analysis system which are convenient to install and use are provided, and the training device is small in occupied area, can be operated indoors and is suitable for being popularized and used in physical education.

1. Name of the product in this design: Jump rope handle (intelligent counting jump rope). 2. Purpose of this design: for student physical fitness testing, physical education entrance examinations, fitness training, and sports events. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The present disclosure belongs to the technical field of sports equipment, and in particular relates to a soccer drill table for physical education. In response to the problem that soccer sport cannot be depicted and drilled vividly when soccer teaching is performed via a soccer drill table, formal and clear boundary lines are arranged, allowing a lecturer to explain to students more easily, and helping the students to comprehend rules of a soccer field more clearly and visually; and the delineation of the boundary lines enables the students to better comprehend tactics on the soccer field, helps students know how to better collaborate and cooperate in different areas, and provides the students with clear and definite training objectives.

This utility model provides an adjustable high jump training device for physical education, relating to the field of physical education equipment technology. It includes a base, with adjustment mechanisms symmetrically installed on the top of the base near the left and right sides. A drive assembly is installed inside the base. The adjustment mechanism includes a fixed column welded to the top of the base, and an adjustment assembly installed inside the fixed column. A crossbar assembly is installed inside the adjustment assembly and located inside the fixed column. A reset assembly is installed around the fixed column. Through the coordinated use of the drive assembly, fixed column, and adjustment assembly, the height of the stop lever can be adjusted. Through the coordinated use of a turntable, push plate, fixed plate, rotating shaft, and magnet, the stop lever can be quickly pushed inward after use, bringing the inner ends of the two stop levers close together and completing the connection. Compared to traditional training devices, this greatly improves ease of use and effectively enhances practicality.

This invention discloses an AI-based physical education exam scoring method, belonging to the field of exam scoring methods, including the following steps: (1) activating the cameras deployed in the exam room to collect motion images and facial expression images of the examinee during pull-ups; (2) analyzing the collected facial expression images using AI image recognition technology to divide the exam process into three stages; (3) for each stage, analyzing the examinee's motion images using AI technology to determine whether each pull-up motion is a qualified motion; (4) counting the number of qualified motions in each stage and scoring them separately, adding the scores of the three stages to obtain the examinee's final exam score. This invention can divide the exam into three stages based on facial expression recognition, perform differentiated analysis on the motion characteristics of each stage, better fit the examinee's physical fitness change patterns, and make the evaluation results more targeted.

The invention discloses a swimming training device with a monitoring training function for physical education, and belongs to the technical field of swimming training devices.The swimming training device comprises an anti-skid bottom plate which is placed on the ground in an attached mode, a steel structure support is fixedly installed above the anti-skid bottom plate, and a fixing seat is fixedly installed on the steel structure support; a body supporting plate is elastically and rotationally installed on the fixing base, guide frames are symmetrically and fixedly installed on the two sides of the steel structure support, pushing assemblies for pushing the body supporting plate to elastically rotate are arranged on the guide frames, and an adsorption assembly for improving stability is further arranged on the anti-skid bottom plate. And the body supporting plate controls the adsorption assembly to perform adsorption positioning in the rotating process. According to the swimming training device with the monitoring and training functions for physical education, the body supporting structure is driven to drive the body to conduct synchronous inclination adjustment through arm paddling training, the swimming posture is fully simulated, the equipment stability can be improved through the negative pressure adsorption effect in the using process, and the training safety is enhanced.

The invention provides novel physical education equipment for physical education. The novel physical education equipment structurally comprises a positioning base, a supporting frame, a balancing weight, a tension rope, a rotating shaft, a tension rod and an auxiliary structure. On the basis that an auxiliary structure is additionally arranged on the positioning base, the positions of the partition plate and the limiting block are determined through the magnetic suction plate and the insertion block, so that the balancing weight is separated from one end of the positioning base, and the situation that the head of a trainee collides with the balancing weight due to the fact that the trainee inclines forwards under the tension condition is prevented; the vertical or parallel placement position of the adjusting body can be changed through the detachable effect of the clamping blocks of the adjusting body, so that trainees can carry out standing or lying tension training, meanwhile, position limiting is carried out by combining the cooperation of the protruding blocks and the limiting blocks, and the two ends of the tension rod can be inserted into the containing grooves in the protruding blocks; the tension bar can be temporarily positioned when trainees lie flat for training, so that the effect of slight enthusiasm is achieved, and the use safety coefficient and the multi-directional limiting use effect of the physical education equipment can be improved.

The invention discloses a physical education teaching quality dynamic evaluation system and method based on artificial intelligence, and the system and method are realized through the following steps: employing an inertial motion capture sensor, a non-embedded physiological signal measurement device, a camera and a microphone; collecting motion postures and physiological data of students and teaching behaviors and explanation contents of teachers in real time; after cleaning, denoising and format conversion are carried out on the collected data, feature extraction and mode recognition are carried out by adopting a machine learning and deep learning model, and the exercise performance of students and the teaching effect of teachers are analyzed; a dynamic evaluation model is constructed based on the analysis result, and the model integrates a motion efficiency comprehensive evaluation function and comprehensively considers the motion accuracy, the motion stability, the physiological load index and the motion sequence fractal dimension to achieve objective evaluation; finally, personalized teaching suggestions are provided for teachers according to evaluation results, and customized learning paths and resources are planned for students. According to the invention, real-time, dynamic and intelligent assessment of the physical education teaching process is realized, the assessment efficiency and accuracy are significantly improved, and teaching optimization and personalized development are promoted.

The invention discloses a student comprehensive physical fitness interesting exercise test method based on motion quality grading and self-adaptive combination, which comprises the following steps: acquiring basic physical fitness data of a student through face recognition, and calculating initial difficulty scores and increment scores of five test items of squatting, boxing, jumping, high leg raising and sideways bending by adopting a threshold grading algorithm; the first 5N groups are trained in a fixed sequence, the coordinates of the key points of the actions of the students are obtained through the visual capture technology, and the quality score and the comprehensive score of each action are calculated; executing adaptive selection based on the quality accumulated score, and dynamically selecting a training item by adopting a minimum score selection strategy and a minimum value optimization principle of a ratio of an item selection score to a residual increment score; according to the method, the test content can be adaptively adjusted according to the individual difference of the students, the scientificity and interestingness of the test are improved, and the method is suitable for school physical fitness test and physical education.

The invention relates to a student exercise emotion supervision method and device based on a large model, and a medium, and belongs to the technical field of emotion supervision, and the method comprises the steps: training a student exercise emotion large model; determining an emotion feature score, and determining a teaching link score; determining a teaching emotion score, a teaching state score, a teaching time score and a teaching abnormity score; determining a process tracking score, determining a process influence score, and determining a process criterion score according to the portrait center point coordinates of the students and the student clustering center coordinates; process participation scores are determined, and training abnormity judgment scores are determined; determining an activity criterion score, and determining an activity abnormity score; determining an emotion abnormity score; and judging whether the students have emotional abnormalities according to the emotional abnormality scores, and if the judgment result is that the students have the emotional abnormalities, sending reminding information to the sports teachers and the class advisers. The method can accurately judge whether the exercise emotion of the students is abnormal or not, and the physical education teachers and class advisers conduct teaching intervention guidance in time.

This invention discloses a method for constructing an AI-assisted assessment system for physical education teaching scenarios, belonging to the field of education. The method includes the following steps: First, a standard movement sample database is constructed based on physical education teaching standards, containing movement samples and feature annotations from multiple angles and difficulty levels; second, an AI assessment model is designed, using computer vision technology to extract key points of human posture, and combining temporal analysis algorithms to achieve automatic recognition and quantitative scoring of movements; then, a recording module, a feedback module, and a report generation module are integrated to provide video acquisition, real-time analysis, and personalized guidance functions; finally, the system is continuously improved through an iterative optimization path of data acquisition, model training, system integration, and experimental verification. This invention realizes the transformation of physical education teaching assessment from a subjective experience-driven model to a data-driven model, supports multi-dimensional movement scoring and deviation localization, provides objective and unified evaluation results, and offers immediate and accurate feedback, effectively improving teaching guidance efficiency and students' movement skill levels.

The invention relates to the field of physical education invigilation, and discloses an invigilation method and equipment for middle and long distance running and a storage medium. The method comprises the following steps: monitoring human skeleton actions in a starting area in real time; when it is monitored that the human skeleton action is a hand raising action, human face recognition is performed on a human body corresponding to the human skeleton action, and a human face recognition result is obtained; comparing the face recognition result with a preset registration database to obtain a comparison result; when the comparison result is qualified, writing the face id corresponding to the comparison result into a preset competition participation list; based on a ByteTrack cross-frame association algorithm, generating a trajectory flow corresponding to the face id; monitoring human body leg key points and a face id in a terminal point area in real time; generating a line punching moment based on the relationship between the human leg key points and the finishing line; and generating a running score corresponding to the face id according to the track flow and the line punching moment. In the embodiment of the invention, the monitoring system does not need additional wearable equipment, and a single set of system is low in cost and can stably operate in various natural environments.

The invention relates to the technical field of physical education testing, and discloses an intelligent physical education tester for physical education, which comprises a fixed supporting seat, an adjusting mechanism is arranged at the bottom of the fixed supporting seat, a rotating mechanism is arranged at the top of the fixed supporting seat, and a dismounting mechanism is arranged in the rotating mechanism. A cleaning mechanism is arranged at the top of the rotating mechanism; and the rotating mechanism comprises a first motor, the exterior of the first motor is installed in the fixed supporting seat, the output end of the first motor is fixedly connected with a mounting base, and the bottom of the mounting base is fixedly connected with a limiting rotating block. A pull block is pulled, a compression spring drives a tooth-shaped limiting block to move out of one side of a tooth-shaped lifting rod, the height of a fixed supporting seat is adjusted, and a second motor is matched to drive a rotating disc to drive a brush to clean the mirror surface of the recorder, so that the use convenience and the cleaning effect of the equipment are improved, and the problems that traditional equipment is difficult to adjust and incomplete in cleaning are solved.

The invention discloses an agile trapezoidal training teaching aid for pupils, and belongs to the technical field of teaching aids, the agile trapezoidal training teaching aid comprises two nylon belts and a plurality of plastic crosspieces, the two nylon belts are arranged in parallel, each nylon belt is provided with a plurality of blocking strips distributed at equal intervals, the plurality of plastic crosspieces are horizontally distributed at equal intervals, and the plastic crosspieces are arranged in parallel. The two ends of each plastic crosspiece are respectively provided with an inserted crosspiece seat, the plastic crosspieces are detachably connected with the two crosspiece seats, each crosspiece seat is provided with a positioning piece, and the positioning pieces can slide on the nylon belt. The device is simple in structure and convenient to carry, does not need to be assembled, is particularly suitable for agility, coordination and stride frequency training, can be used for various jumping and stride exercises, helps students to improve the exercise reaction speed and the flexibility of lower limbs, and provides a practical and multifunctional teaching aid for physical education in primary schools.

The invention discloses a leg pressing device for physical education, and relates to the technical field of leg pressing devices. Sliding grooves are formed in the upper ends of the left side wall and the right side wall of the supporting frame, sliding columns are slidably connected into the sliding grooves, the left end and the right end of the leg pressing rod are fixedly connected with the adjacent side walls of the sliding columns on the left side and the right side respectively, moving mechanisms are arranged on the left side and the right side of the supporting frame, clamping mechanisms are arranged between the sliding columns and the sliding grooves, and reset mechanisms are arranged at the bottoms of the sliding grooves. The height adjusting core of the device depends on matching of a sliding column and a sliding groove and the synergistic effect of a clamping mechanism and a reset mechanism, in the clamping mechanism, an abutting spring always applies elastic force to a clamping plate, the clamping plate is clamped into a clamping groove of a matching plate, and stable positioning of the sliding column is achieved; the device does not need to bend down to operate any button or knob, adjustment can be triggered only by applying up-down acting force to the leg pressing rod, height adjustment can be completed in a standing state, the operation threshold is greatly lowered, and the device is particularly suitable for the requirements of rapidly adapting to students with different heights in a teaching scene.

1. Name of the product in this design: Sports Teaching Board. 2. Purpose of this design: For writing and displaying physical education teaching content. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The basketball throwing equipment for physical education structurally comprises a main body, a guide net and a frame, the guide net is arranged at the top of the main body, the frame is connected to the side end of the top of the guide net, the frame is made of a metal material, the main body comprises a box body, universal wheels, a supporting rod and a threaded pipe, and the top of the rear end of the bottom of the box body is connected with the end face of the bottom of the guide net. And the number of the universal wheels is two, the universal wheels are arranged on the end face of the left side of the bottom of the box body, the threaded pipe is installed on the end face of the bottom of the supporting rod, and the threaded pipe is movably matched with the end face of the supporting rod. And finally, the end face of the basketball is impacted by the pushing device, so that the basketball can fly out along the end face of the pushing pipe, and the basketball can be automatically conveyed to the hands of a person for throwing training.

The invention discloses an informatization physical education platform management system, which comprises a data acquisition module, an intelligent analysis decision module, a teaching management module and a multi-terminal collaborative interaction module, so that the problems of low efficiency and incompleteness of traditional manual recording can be solved, and the real-time performance, objectivity and comprehensiveness of data are improved; by utilizing machine learning and big data, the system automatically generates a physique report, identifies action problems and provides improvement suggestions; a personalized training scheme is recommended according to physical ability and interests of students, and individualized teaching is realized; meanwhile, by monitoring indexes such as the heart rate, abnormity is early warned in real time, sports injury is prevented, and safety is guaranteed. The system supports intelligent course arrangement, non-inductive attendance checking and electronic score management, and the burden of teachers is relieved; through visualized analysis of process and result data, sports evaluation is promoted to turn from'result seeing 'to're-process', and the scientificity and fairness of evaluation are improved.

A physical training device for physical education, which belongs to the technical field of physical training equipment. The physical training device comprises a rubber tire (1), wherein two support rods (2) are horizontally arranged inside the rubber tire (1) and are parallel to each other; a rotating shaft (3) horizontally penetrates the same ends of the two support rods (2) close to the rubber tire (1); a spool (4) is sleeved on the rotating shaft (3) and located between the two support rods (2); a traction rope is wound onto the spool (4); and two first connecting rods (5) are vertically arranged under the two sides of the rotating shaft (3) close to the support rods (2). By means of the coordinated use of the support rods (2), the rotating shaft (3), the spool (4) and the traction rope on the rubber tire (1), the device makes it convenient for physical education students to drag the rubber tire (1) to move for physical exercise. When the distance between the traction rope and a shoulder is relatively short, the traction rope lifts the front side of the rubber tire (1) upwards, and after the traction rope on the spool (4) is automatically released to an appropriate length, the front side of the rubber tire (1) comes into contact with the ground again by means of its own gravity and locks the rotating shaft (3), such that beginners are prevented from spending a large amount of time adjusting the length of the traction rope, thereby improving the efficiency of physical exercise.