scholarly journals Slow Breathing Exercise with Multimodal Virtual Reality: A Feasibility Study

Sensors ◽  
2021 ◽  
Vol 21 (16) ◽  
pp. 5462
Author(s):  
Kun-Chan Lan ◽  
Che-Wei Li ◽  
Yushing Cheung
Keyword(s):  
Virtual Reality ◽  
Tactile Feedback ◽  
Human Model ◽  
Breathing Rate ◽  
Additional Source ◽  
Breathing Exercise ◽  
Mediation Training ◽  
Breathing Training ◽  
System A ◽  
Slow Breathing

Many studies have shown that slow breathing training is beneficial for human health. However, several factors might discourage beginners from continuing their training. For example, a long training period is generally required for benefit realization, and there is no real-time feedback to trainees to adjust their breathing control strategy. To raise the user’s interest in breathing exercise training, a virtual reality system with multimodal biofeedback is proposed in this work. In our system, a realistic human model of the trainee is provided in virtual reality (VR). At the same time, abdominal movements are sensed, and the breathing rate can be visualized. Being aware of the breathing rate, the trainee can regulate his or her breathing to achieve a slower breathing rate. An additional source of tactile feedback is combined with visual feedback to provide a more immersive experience for the trainees. Finally, the user’s satisfaction with the proposed system is reported through questionnaires. Most of the users find it enjoyable to use such a system for mediation training.

scholarly journals Tactile feedback for relief of deafferentation pain using virtual reality system: a pilot study

2016 ◽  
Vol 13 (1) ◽  
Author(s):  
Yuko Sano ◽  
Naoki Wake ◽  
Akimichi Ichinose ◽  
Michihiro Osumi ◽  
Reishi Oya ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Pilot Study ◽  
Tactile Feedback ◽  
Virtual Reality System ◽  
Deafferentation Pain ◽  
System A

scholarly journals Adaptando el Lean Project Delivery System a la elaboración o actualización de un plan de estudios de ingeniería civil incorporando BIM, Realidad Virtual y Fotogrametría = Adapting Lean Project Delivery System to the elaboration or updating of the Civil Engineering Undergraduate Degree Plan, incorporating BIM, Virtual Reality and Photogrammetry

2020 ◽  
Vol 4 (3) ◽  
pp. 35
Author(s):  
Xavier Brioso ◽  
Diego Fuentes Hurtado
Keyword(s):  
Virtual Reality ◽  
Delivery System ◽  
Civil Engineering ◽  
Project Delivery ◽  
Lean Principles ◽  
System A ◽  
Catholic University ◽  
A Value ◽  
Management Area

El Lean Project Delivery System (LPDS) es un sistema que implementa principios y herramientas Lean en todo el ciclo de vida de un proyecto de construcción. El LPDS es adaptativo pues es flexible para especificar las entradas y salidas de los procesos y tiene la libertad de elegir herramientas, técnicas y tecnologías acorde a las últimas tendencias. El propósito principal de este artículo es presentar un marco de generación de valor a través de la adaptación del LPDS al proceso de revisión de un plan de estudios. Este trabajo adapta el modelo del LPDS al proyecto de elaboración o actualización de un plan de estudios de la especialidad de ingeniería civil, incorporando BIM, realidad virtual y fotogrametría a lo largo de las asignaturas del área de gestión de la construcción. Se incluyen herramientas blandas y competencias tecnológicas que potencian la empleabilidad del egresado. Como estudio de caso se presenta la aplicación del modelo en la Pontificia Universidad Católica del Perú.ABSTRACTLean Project Delivery System (LPDS) is a system that implements Lean principles and tools throughout the life cycle of a construction project. The LPDS is adaptive because it's flexible enough to specify the inputs and outputs of each process and allows the freedom to choose tools, techniques and technologies according to the latest trends. The main purpose of this paper is to present a value-generation framework through the adaptation of the LPDS to the Undergraduate Degree Plan process. This work adapts the LPDS model to the current project, elaboration or updating of the civil engineering curriculum, incorporating BIM, virtual reality and photogrammetry in the construction management area subjects. Soft tools and technological skills are included, and as such, enhancing the employability of the undergraduate. As a case study, the application of the model is presented at the Pontifical Catholic University of Peru.

scholarly journals Slow Breathing Training Reduces Resting Blood Pressure and the Pressure Responses to Exercise

2015 ◽  
pp. 673-682 ◽  
Author(s):  
C. U. JONES ◽  
B. SANGTHONG ◽  
O. PACHIRAT ◽  
D. A. JONES
Keyword(s):  
Blood Pressure ◽  
Pressor Response ◽  
Autonomic Control ◽  
Handgrip Exercise ◽  
Breathing Training ◽  
Hand Grip ◽  
Pressor Responses ◽  
Resting Blood Pressure ◽  
Slow Breathing ◽  
Inspiratory Load

Slow breathing training reduces resting blood pressure, probably by modifying central autonomic control, but evidence for this is lacking. The pressor response to static handgrip exercise is a measure of autonomic control and the aim of this study was to determine whether slow breathing training modulates the pressor responses to exercise of untrained muscles. Twenty hypertensive patients trained for 8 weeks, 10 with unloaded slow breathing (Unloaded) and 10 breathing against an inspiratory load of 20 cm H2O (Loaded). Ten subjects were untrained controls. Subjects performed a 2 min handgrip pressor test (30 % MVC) pre- and post-training, and blood pressure and heart rate (HR) were measured before the contraction, at the end and following 2 min recovery. Resting systolic (sBP) and HR were reduced as a result of training, as reported previously. After training there was both a smaller pressor response to hand grip exercise and a more rapid recovery of sBP and HR compared to pre-training. There were no changes in the Controls and no differences between the Unloaded and Loaded groups. Combining the two training groups, the sBP response to handgrip exercise after training was reduced by 10 mm Hg (95 % CI: −7, −13) and HR by 5 bpm (95 % CI: −4, −6), all p<0.05. These results are consistent with slow breathing training modifying central mechanisms regulating cardiovascular function.

Enhanced virtual reality application with tactile feedback for prototyping in-car dashboard surfaces*

2021 ◽  
Author(s):  
Emanuel Sousa ◽  
Nuno Sousa ◽  
Rosane Sampaio ◽  
Joana Vieira ◽  
Marcelo Pires ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Tactile Feedback ◽  
Virtual Reality Application

scholarly journals Maze Terrain Authoring System in Immersive Virtual Reality for New Visual Realism

Symmetry ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 490
Author(s):  
Jinmo Kim
Keyword(s):  
Image Processing ◽  
Virtual Reality ◽  
Processing Algorithm ◽  
Immersive Virtual Reality ◽  
Authoring System ◽  
Image Processing Algorithm ◽  
Generation Algorithm ◽  
Complex Maze ◽  
System A ◽  
Visual Realism

This paper proposes a maze terrain authoring system with which a user can automatically calculate various and complex maze patterns to compose maze terrains in an easier and more intuitive structure. Using the maze terrain information calculated by using the proposed authoring system, a 3D maze terrain is generated quickly and effectively, and through this, the user’s visual realism in an immersive virtual reality is increased to provide a new presence. The proposed maze terrain authoring system consists of three core functions: a function that automatically generates a grid maze of various sizes and patterns based on a maze generation algorithm; a function that calculates a circular maze in an intuitive structure; and a function that transforms a sketch-based maze by using an image-processing algorithm. Through the authoring system consisting of these functions, various maze terrains from uniform mazes to irregular mazes can be generated effectively. This study produces maze terrains of various concepts directly by using maze information calculated through the authoring system. In addition, through experiments, this study analyzes the efficiency in an immersive virtual reality and the presence through visual realism. In this process, the suitability of the authoring system is also analyzed in combination with a survey.

A New Approach to Interactive Grasping Simulation of Product Concepts in a Virtual Reality Environment

2007 ◽  
Author(s):  
Zolta´n Rusa´k ◽  
Csaba Antonya ◽  
Wilfred van der Vegte ◽  
Imre Horva´th ◽  
Edit Varga
Keyword(s):  
Virtual Reality ◽  
Tactile Feedback ◽  
Handheld Devices ◽  
Human Hand ◽  
Virtual Reality Environment ◽  
Product Concept ◽  
User Behaviors ◽  
Grasping Forces ◽  
Physically Based ◽  
Product Concepts

Customer evaluation of concepts plays an important role in the design of handheld devices, such as bottles of douche gels and shampoos, where the phenomenon of grasping needs to be evaluated. In these applications important information on the aspects of ergonomics and user behaviors could be gathered from computer simulation. It is our ultimate goal to develop an environment in which users and designers can freely interact with product concepts. In our approach to grasping simulation there is no tactile feedback and we do not measure the exerted grasping forces. There is no wiring of the human hand, and the users are not limited in their movements. We measure the motion of the human hand, compute the grasping forces based on anthropometric data, and simulate the reaction of product concepts in a physically based virtual reality environment. Our contribution consists of: (i) a method, which takes into account the anatomy of the human hand in order to determine the maximum grasping forces, and (ii) an approach which enables to control the grasping forces based on (a) the penetration of the virtual human hand into the virtual model of product concept (b) the posture of the grasping, and (c) the angles of the joints. The paper reports on the framework of our approach and presents an application.

Virtual Reality and the Vestibular System: A Brief Review

2003 ◽  
pp. 101-108 ◽  
Author(s):  
Erik Viirre ◽  
Zsolt Lorant ◽  
Mark Draper ◽  
Thomas A. Furness
Keyword(s):  
Virtual Reality ◽  
Vestibular System ◽  
System A
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