Stair climbing

About: Stair climbing is a research topic. Over the lifetime, 1610 publications have been published within this topic receiving 30504 citations.

Knee Extensor Muscle Strength Is More Important Than Postural Balance for Stair-Climbing Ability in Elderly Patients with Severe Knee Osteoarthritis.

Abstract: Knee osteoarthritis is a chronic joint disease which damages articular cartilage In its severe stages, it results in impairments in balance and muscle strength loss, which affect daily life activities such as walking or climbing stairs This study sought to investigate associated factors with stair-climbing ability in this population, with special interest in measuring the relevance of postural balance for this task Forty-four patients scheduled to undergo unilateral total knee arthroplasty were assessed Timed up and go test, stair ascent-descent test, three different isometric strength tests (knee flexion, knee extension and hip abduction), active knee extension and flexion range of movement and static postural balance assessment were evaluated Spearman's correlation coefficients and multiple linear regression analysis determined the strength of association between the different variables and stair-climbing time No significant association between the stair-climbing time and static balance was found Significant associations were found between stair-climbing time and timed up and go (r = 071; p < 00001) and maximal knee extensor strength (r = -052; p = 00003) One-year increase in age was associated with 015 s (95% CI 000 to 030) slower stair-climbing time In conclusion, muscle strength is more important than postural balance for stair-climbing ability in this population

A multi-legged biomimetic stair climbing robot with human foot trajectory

Abstract: This paper aims to develop a multi-legged stair climbing robot with the capability to steadily climb stairs with consistent human foot trajectory. The leg design is based on the eight-bar Jansen mechanism but a new set of leg configuration is numerically identified based on the optimal design method with the aim to mimic the human foot trajectory when climbing stairs. The kinematic analysis of the leg mechanism based on loop closure equation has been derived in order to identify the leg trajectories for various designs. The targeted foot trajectory is experimentally measured. The weighted sum and simplex methods are used to solve the multi-objective function in the optimal design process. The proposed design is an eight-leg robot; its dynamic performance and trajectories of the multibody motion when climbing stairs have been numerically verified by using the commercial CAE package, RecurDyn. The prototype of the biomimetic robot has been developed to proof the concept design. The experimental results show the multi-legged robot can step up and down stairs with steady human foot trajectory.

Stair climbing device

Abstract: The apparatus for the motorized driving at constant speed of stair-climbing carriages with wheel clusters, for transporting commercial loads, or carriages used in the manufacture of wheelchairs for the disabled, is of the type in which the axle (1) with the wheel clusters (2, 3) at its ends is operated by a motor/gearbox assembly (10, 14) with a direct-current electric motor (14) with two directions of rotation. The apparatus comprises means of any suitable type (19) that detect the speed of rotation of at least one preferably fast point of the kinematic chain connected to the said motor (14) and that generates an electrical signal proportional to this speed which is sent to a control unit (16) designed to ensure that when travelling up or down stairs, the axle (1) of the carriage rotates at a predetermined speed that is as far as possible constant.

Barrier-free electric carrying stair climbing vehicle

Abstract: The utility model discloses a barrier-free electric carrying stair climbing vehicle comprising a carrying rack, a push-pull rod, a carrying baffle, planet wheel sets and a driving mechanism, wherein the carrying rack is rectangular; the right lower ends of two long edges of the carrying rack are respectively provided with one planet wheel set; the two planet wheel sets are integrally connected through a transmission shaft; the right side of the carrying rack is provided with the driving mechanism and the driving mechanism is located above the transmission shaft; and the two long edges of the carrying rack are in a hollow metal structure, and the outer sides of same-height parts of the upper ends of the two long edges are respectively provided with one limiting hole The barrier-free electric carrying stair climbing vehicle disclosed by the utility model is relatively simple in structure, lower in construction cost and simple in operation; the influences caused by cargo sizes and a stair environment are smaller; and the barrier-free electric carrying stair climbing vehicle is safe and convenient, and is convenient for popularization and application

Some Relationships Between Stair Climbing and Prone Progression

Abstract: * Accepted for publication by Arnold Gesell of the Editorial Board, and received in the Editorial Office on June 9, 1938.