Topic
Stair climbing
About: Stair climbing is a research topic. Over the lifetime, 1610 publications have been published within this topic receiving 30504 citations.
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TL;DR: In this article, a stair-climbing and obstacle-traversing robot system was designed as a human-machine interaction model and the parameters of driving wheels were determined with the optimization target of rotation axis's undulation amplitude, which can realize the automatic switching between rotation and revolution.
Abstract: The author introduced a new stair-climbing and obstacle-traversing robot system. According to its working environment, the parameters of driving wheels were determined with the optimization target of rotation axis’s undulation amplitude; The gear ratios of the driving planetary gear train were determined by running resistance, which can realize the automatic switching between rotation and revolution; According to its applicable situation, the robot’s control system was designed as a human-machine interaction model.
TL;DR: Results provided evidence that pitch angle might be used in perceptual judgments for stair climbability, and revealed that all groups selected 60° as the limit for climbability.
Abstract: Two experiments explored perception and action for stair climbing, with manipulations to the stair dimensions In Experiment 1, a custom-built apparatus manipulated the stair dimensions, while three groups of participants made perceptual judgments of climbability The groups differed significantly for absolute leg length (p < 0001), but there was no significant difference between the groups when stair dimensions were calculated relative to leg length The selected tread depths and riser heights reflected constant proportions of participants' leg length Using the pitch angles formed as a composite metric, the results revealed that all groups selected 60° as the limit for climbability Experiment 2 scaled pitch angle systematically from 20° to 80°, and participants judged 65° and beyond to be unclimbable These results provided evidence that pitch angle might be used in perceptual judgments for stair climbability
TL;DR: Based on the principle of crawler drive, a crawler robot climbing stairs device that can have a ground walking, climb stairs and travel across the barriers, which is convenient for the elderly and the disabled to travel as mentioned in this paper.
Abstract: Based on the principle of crawler drive, this paper puts forward a crawler robot climbing stairs device that can have a ground walking, climb stairs and travel across the barriers, which is convenient for the elderly and the disabled to travel.While using built-in the rotation of the swing arm to achieve the effect of climbing stairs, the complex wheel climb building device and crawler drive technologies can effectively avoid the dangers of climbing stairs.The key technology in this paper combined the triangular frame and the center of gravity retaining device in order to require the stability of the stair climbing devices.In conclusion, the present invention is good at climbing stairs more than traveling, which has the higher comprehensive benefit.[1]
TL;DR: Assessment of the discriminatory ability of a combination of routine physical function tests and novel measures, notably muscle mechanical properties and ultrasound imaging of thigh composition, to classify healthy individuals according to their age and gender shows the most sensitive novel biomarkers require no volition.
Abstract: Abstract Background The use of large-scale pooled analyses and data sharing is a potential source to generate evidence to address complex scientific challenges and develop strategies to promote healthy ageing. However, the success of such analyses depends on robust measurements of musculoskeletal (MSK) health in ageing. Simple tests indicative of MSK health and suitable for use with older people are required. This study aims to assess the discriminatory ability of a combination of routine physical function tests and novel measures, notably muscle mechanical properties and ultrasound imaging of thigh composition (relative contribution of muscle and subcutaneous adipose tissue) to classify healthy individuals according to their age and gender. Methods This cross-sectional study included 138 community-dwelling, self-reported healthy males and females (65 young, mean age±SD = 25.7±4.8 years; 73 older, 74.9±5.9 years). Handgrip strength; quadriceps strength; respiratory peak flow; timed up and go; stair climbing; anterior thigh tissue thickness (using ultrasound imaging), muscle mechanical properties (stiffness, tone and elasticity; Myoton technology); and self-reported health related quality of life (SF36) were assessed. Stepwise linear discriminant analysis was used to classify cases based on criterion variable derived from the known effects of age on physical function. Results Combining conventional physical function tests with novel measures, revealed two discriminant functions which significantly (Wilks's λ = 0.05, 0.34; p>0.001) classified 89% of grouped cases with 11% error rate using leave-one-out cross-validation. Seven variables associated with grip strength, peak flow, timed up and go, anterior thigh thickness, and muscle mechanical properties demonstrated high discriminant ability (p>0.05 correlation with discriminant functions) to classify healthy people. Conclusions The present study provides reference data for comparison with clinical populations and a comprehensive battery of non-invasive dry biomarkers with high discriminant ability indicative of musculoskeletal health. The most sensitive novel biomarkers require no volition, highlighting potentially useful tests for screening and monitoring effects of interventions on MSK health for vulnerable older people with pain or cognitive impairment. Older misclassified cases who appeared younger than predicted support the need for studies of older people with different habitual activity levels, to provide relevant reference values for assessment, so rehabilitation goals are targeted appropriately.
TL;DR: FES was a feasible and safe tool to use in a child with FSHD and muscle strength increased in the quadriceps femoris muscle of the non-dominant side, and it remained constant on the dominant side.
Abstract: Abstract Aims This study aims to investigate the feasibility and safety of short-term functional electrical stimulation (FES) training of the quadriceps femoris muscles in a child with facioscapulohumeral muscular dystrophy (FSHD). Methods A 7-year-old child with FSHD received treatment due to a decrease in functional performance and difficulty climbing stairs. The child was followed up with a home-based exercise program. FES was applied twice a week during stair climbing for six weeks. Muscle activation of the quadriceps femoris was measured using superficial electromyography, muscle strength was measured with a hand-held dynamometer, and functional performance was assessed with the 6-Minute Walk and the Stair Climb Tests before and after the treatment period. Results At the end of the treatment, there was an improvement in muscle activation. While muscle strength increased in the quadriceps femoris muscle of the non-dominant side, it remained constant on the dominant side. Functional performance test results also improved. Conclusions FES was a feasible and safe tool to use in our case, a child with FSHD.