A method and system for quantitative evaluation of lower limb exercise capacity based on treadmill force platform

Abstract

The invention discloses a lower limb athletic ability quantitative evaluation method and system based on a force platform of a running machine. By collecting a signal of the force platform of the running machine and a pressure signal of a foot sole pressure sensor in the process that a user walks on the running machine, the time points when the left and right feet get off and touch the ground arefound in the walking process through a foot sole pressure signal; after smoothing and noise reducing, a collected force signal of the force platform is calculated to obtain a pressure center track inthe walking process; according to displacement and time of the pressure center track, the current moving speed of each pressure center point is calculated; the pressure center track is subjected to period cutting and time-phase cutting by utilizing the time points when the left and right feet get off and touch the ground; the pressure center track after period cutting and the track moving speed are utilized for obtaining a pressure center change chart; the pressure center track after time-phase cutting is utilized and calculated for quantizing evaluating parameters. According to the method andsystem, the quantification of lower limb athletic ability is more accurate and more objective.

Description

technical field [0001] The invention relates to the field of exercise evaluation, and more specifically, relates to a method and system for quantitatively evaluating lower limb exercise capacity based on a treadmill force platform. Background technique [0002] The motor ability of the lower limbs is very important for daily activities such as walking and standing. The motor activation, muscle tone, joint movement and balance of the lower limbs are regulated by the brain, and the gait during walking is regulated by the spinal cord. Some neurological diseases, such as hemiplegia caused by stroke, can cause lower limb motor dysfunction, such as decreased muscle activation, slowed gait, motor coordination disorders, and differences in the load capacity and driving force of the left and right lower limbs, which affect patients' daily walking Activity. [0003] The assessment of motor function of lower limbs is helpful for assisting the diagnosis of diseases, helping to choose a...

AI Technical Summary

Problems solved by technology

In the existing technology, most studies use mechanical data to calculate parameters such as step length, step width, cycle duration, and support period duration, but do not evaluate sports from parameters such as driving force and pressure center space symmetry that reflect the coordination and balance ability of the lower limbs function, but also lacks a simple and practical method for segmenting specific time phases

However, some studies are based on a 10-meter-long force table to measure mechanical data, and the gait cycle that can be collected is limited, making the calculated parameters less reliable.

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