Application of Digital Human Models to Physiotherapy Training

2016 ◽  
Author(s):  
Takao Kakizaki ◽  
Jiro Urii ◽  
Mitsuru Endo
Keyword(s):  
Clinical Training ◽  
Three Dimensional ◽  
Human Model ◽  
Training Methods ◽  
Information And Communications Technologies ◽  
Digital Human Model ◽  
Digital Human Models ◽  
Video Archives ◽  
Digital Human ◽  
Physiotherapy Education

The importance of physiotherapy is becoming more significant with the increasing number of countries with aging populations. Thus, the education of physiotherapists is a crucial concern in many countries. Information and communications technologies, such as motion capture systems, have been introduced to sophisticate the training methods used in physiotherapy. However, the methods employed in most training schools for physiotherapists and occupational therapists remain dependent on more conventional materials. These materials include conventional textbooks with samples of traditional gait motion photographs and video archives of patients’ walking motion. Actual on-site clinical training is also utilized in current physiotherapy education programs. The present paper addresses an application of previously developed digital human model called kinematic digital human (KDH) to physiotherapy education with a focus on improving students’ understanding of the gait motion of disabled patients. KDH models for use in physiotherapy were constructed based on Rancho Los Amigos National Rehabilitation Center terminology, which is considered the preferred standard among clinicians. The developed KDH models were employed to allow the three-dimensional visualization of the gait motion of a hemiplegic patient.

Application of Digital Human Models to Physiotherapy Training

2017 ◽  
Vol 17 (3) ◽  
Author(s):  
Takao Kakizaki ◽  
Mai Endo ◽  
Jiro Urii ◽  
Mitsuru Endo
Keyword(s):  
Clinical Training ◽  
Three Dimensional ◽  
Human Model ◽  
Training Methods ◽  
Information And Communications Technologies ◽  
Digital Human Model ◽  
Digital Human Models ◽  
Video Archives ◽  
Digital Human ◽  
Physiotherapy Education

The importance of physiotherapy is becoming more significant with the increasing number of countries with aging populations. Thus, the education of physiotherapists is a crucial concern in many countries. Information and communications technologies, such as motion capture systems, have been introduced to sophisticate the training methods used in physiotherapy. However, the methods employed in most training schools for physiotherapists and occupational therapists remain dependent on more conventional materials. These materials include conventional textbooks with samples of traditional gait motion photographs and video archives of patients' walking motion. Actual on-site clinical training is also utilized in current physiotherapy education programs. The present paper addresses an application of a previously developed digital human model called the kinematic digital human (KDH) to physiotherapy education with a focus on improving students' understanding of the gait motion of disabled patients. KDH models for use in physiotherapy were constructed based on Rancho Los Amigos National Rehabilitation Center (RLANRC) terminology, which is considered the preferred standard among clinicians. The developed KDH models were employed to allow the three-dimensional visualization of the gait motion of a hemiplegic patient.

Probabilistic sensitivity analysis of in-vehicle reach tasks for digital human models considering anthropometric measurement uncertainty

Robotica ◽  
2014 ◽  
Vol 33 (3) ◽  
pp. 498-512
Author(s):  
Aimee Cloutier ◽  
Jared Gragg ◽  
James Yang
Keyword(s):  
Joint Angle ◽  
Human Model ◽  
Anthropometric Measurement ◽  
Joint Angles ◽  
Link Length ◽  
Digital Human Model ◽  
Deterministic Methods ◽  
Digital Human Models ◽  
Sensitivity Approach ◽  
Digital Human

SUMMARYFor design using digital human models, human anthropometry data are required as input and are extracted from measurements. There is inherent error associated with these measurements which impacts the output of the simulation. Current techniques in digital human modeling applications primarily employ deterministic methods which are not well suited for handling variability in anthropometric measurement. An alternative to deterministic methods is probabilistic/sensitivity analysis. This study presents a probabilistic sensitivity approach to gain insights into how uncertainty in anthropometric measurements can affect the results of a digital human model with the specific application of vehicle-related reach tasks. Sensitivity levels are found to determine the importance of variability in each joint angle and link length to the final reach. A55-degree of freedom (DOF) digital human model is introduced to demonstrate the sensitivity approach for reach tasks. Seven right-hand reach target points and two left-hand reach target points (creating a total of 14 reach tasks) within a vehicle are used to compare the sensitivities in the joint angles and link lengths resulting from measurement uncertainty. The results show that the importance of each joint angle or link length is dependent on the characteristics of the reach task and sensitivities for joint angles, and link lengths are different for each reach task.

A Three-Dimensional Evacuation Simulation Using Digital Human Models With Precise Kinematic Joints

2011 ◽  
Author(s):  
Takao Kakizaki ◽  
Jiro Urii ◽  
Mitsuru Endo
Keyword(s):  
High School Students ◽  
Three Dimensional ◽  
Human Motion ◽  
Human Model ◽  
School Students ◽  
Evacuation Simulation ◽  
Digital Human Models ◽  
Evacuation Drills ◽  
Mass Evacuation ◽  
Digital Human

Disaster drills are important for minimizing the damage caused by earthquakes, floods, and fires. Therefore, mass-evacuation drills are considered to be an important obligation of schools and workplaces that employ several individuals. Moreover, for the validation of drill effectiveness as well as disaster prevention, the significance of mass-evacuation simulation has increased. In the present paper, a three-dimensional mass-evacuation simulation is first explained. The developed multi-agent-based simulation with a detailed three-dimensional building infrastructure uses a kinematic digital human model with precise human joints. Simulation of a mass-evacuation drill by high-school students agrees well with the results of actual drills. In addition, considering the transportation of badly injured persons during disasters, digital human motion sets of patients and transporters have been developed for critical evacuation simulation. Several examples have revealed the possibility of applying the extended simulation to evacuation from houses and hospitals.

Vision-Based Wayfinding Simulation of Digital Human Model in Three Dimensional as-is Environment Models and its Application to Accessibility Evaluation

2016 ◽  
Author(s):  
Tsubasa Maruyama ◽  
Satoshi Kanai ◽  
Hiroaki Date
Keyword(s):  
Evaluation System ◽  
Three Dimensional ◽  
Outdoor Environment ◽  
Human Model ◽  
Digital Human Model ◽  
Head Mounted Display ◽  
Behavior Simulation ◽  
Accessibility Evaluation ◽  
Digital Human ◽  
Indoor And Outdoor

Elderly and disabled individuals must be able to access the indoor and outdoor environment in an easy and safe manner. Accessibility must be assessed not only in terms of physical friendliness for users, but also of cognitive friendliness such as the ease of wayfinding. To ensure the ease of wayfinding, signage information available at every key decision point is essential because it enables people to find their way in unfamiliar environment. The aim of the present study is to develop virtual accessibility evaluation system that evaluates the environment accessibility from the cognitive friendliness aspect, such as the ease of wayfinding, by combining realistic human behavior simulation using a digital human model (DHM) with as-is environment models. To realize this system, we develop a vision-based wayfinding simulation algorithm for the DHM in textured three-dimensional (3D) as-is environment models. The as-is environment models are constructed with the structure-from-motion (SfM) technique. During the wayfinding simulation, the visibility and legibility of each sign are evaluated on the basis of the visual perception of the DHM and its visibility catchment area (VCA). The DHM walking trajectory is dynamically generated depending on the perceived sign. When a disorientation place is detected where the DHM cannot find any sign indicating its destination, plans for rearranging the signs are proposed by the simulation user and then examined using a developed virtual eyesight simulator (VES). The VES enables the user to check the DHM eyesight virtually during the wayfinding simulation through a head-mounted display. To mimic visual impairments, visual impairment filters are introduced into the VES. In this paper, we demonstrate the process of detecting the disorientation place, and planning and evaluating the rearranged signage.

Digitale Menschmodelle für Montagemitarbeiter/Digital human models for assembly workers - Teacher and learner animations for assisting ergonomically optimized assembly processes

2015 ◽  
Vol 105 (03) ◽  
pp. 115-118
Author(s):  
F. Dennerlein ◽  
U. Daub ◽  
F. Blab ◽  
P. Podfigurny ◽  
U. Schneider ◽  
...  
Keyword(s):  
Mechanical Stress ◽  
Risk Reduction ◽  
Human Model ◽  
Digital Human Model ◽  
Digital Human Models ◽  
Education Tool ◽  
Stress At Work ◽  
Digitale Menschmodelle ◽  
Digital Human ◽  
Related Process

Vorgestellt werden ein digitales Menschmodell und sein Erstellungsprozess. Das Modell ist als leicht verständliches Lernwerkzeug für Arbeitnehmer in Montagetätigkeiten mit bekannt kritisch hohen mechanischen Lasten ausgelegt. Der Ansatz dient dem Verringern des Risikos mechanisch überlastungsbedingter Erkrankungen des Bewegungsapparates.   A digital human model and the related process is presented. This is proposed as an easy-to-use education tool for assembly workers in work positions which are known as being highly mechanically stressful. The intention is risk reduction from musculo-skeletal diseases related to high levels of mechanical stress at work.

Industrial Design of Motorcycle with Reference to Indian Population

2014 ◽  
Vol 592-594 ◽  
pp. 2659-2664 ◽  
Author(s):  
T. Jeyakumar ◽  
R. Gandhinathan
Keyword(s):  
Optimal Solution ◽  
Human Model ◽  
Anthropometric Data ◽  
Posture Analysis ◽  
Digital Human Model ◽  
Set Up ◽  
The Aesthetic ◽  
Decision Making Model ◽  
Digital Human ◽  
Data Collection Approach

India is the second largest 2W market in the world in terms of sales volumes after China. Motorcycles types that are marketed using sports tag are found to be anchored on performance attributes characterized by visual appeal, higher speeds, heady acceleration and superior ride, handling and braking. The chronograph of the sports segment in the Indian market is plotted. A goal defined design process is developed to produce creative ideas for aesthetic attributes-modern, youthful, aerodynamic, and aggressive. The optimal solution satisfying the aesthetic goal is determined using an operation decision making model based upon weighted generalized mean method. A motorcycle is generally straddled by the rider with manual transmission and can be considered as a constrained workstation. Some ergonomic considerations to fit users of different sizes on the same workstation should be taken into account when designing. A two-dimensional anthropometric data collection approach is followed for riders in India. The obtained anthropometric data concerning riding postures are used for posture analysis using digital human model in CAD software. The mutual trade-off between sporty riding style of the rider and comfort angles have been arrived to set up the final posture of the rider. The detailing of the appearance considering the aesthetic attributes and ergonomics are done. The developed design is aimed at improving appearance and ergonomic performance.

Human Carrying Simulation With Symmetric and Asymmetric Loads

2012 ◽  
Author(s):  
Yujiang Xiang ◽  
Jasbir S. Arora ◽  
Salam Rahmatalla ◽  
Hyun-Joon Chung ◽  
Rajan Bhatt ◽  
...  
Keyword(s):  
Degrees Of Freedom ◽  
Human Motion ◽  
Human Model ◽  
Physical Constraints ◽  
Digital Human Model ◽  
Load Carrying ◽  
Reaction Forces ◽  
Asymmetric Load ◽  
Optimization Schemes ◽  
Digital Human

Human carrying is simulated in this work by using a skeletal digital human model with 55 degrees of freedom (DOFs). Predictive dynamics approach is used to predict the carrying motion with symmetric and asymmetric loads. In this process, the model predicts joints dynamics using optimization schemes and task-based physical constraints. The results indicated that the model can realistically match human motion and ground reaction forces data during symmetric and asymmetric load carrying task. With such prediction capability the model could be used for biomedical and ergonomic studies.

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