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A NOVEL FRAMEWORK FOR ANALYSIS OF LOWER LIMB MOVEMENTS: INTEGRATION OF AUGMENTED REALITY AND SENSOR-BASED SYSTEMS
Title
A NOVEL FRAMEWORK FOR ANALYSIS OF LOWER LIMB MOVEMENTS: INTEGRATION OF AUGMENTED REALITY AND SENSOR-BASED SYSTEMS.
Creator
Davis, Edward P., Pandya, Abhijit, Florida Atlantic University, Department of Computer and Electrical Engineering and Computer Science, College of Engineering and Computer Science
Abstract/Description
In this thesis, an augmented reality device was coupled with motion sensor units to function as a system of cooperative technologies for usage within exercise science and neurorehabilitation. Specifically, in a subfield of exercise science called biomechanics, the assessment and analysis of movements are critical to the evaluation and prescription of improvements for physical function in both daily and sport-specific activities. Furthermore, the systematic combination of these technologies...
Show moreIn this thesis, an augmented reality device was coupled with motion sensor units to function as a system of cooperative technologies for usage within exercise science and neurorehabilitation. Specifically, in a subfield of exercise science called biomechanics, the assessment and analysis of movements are critical to the evaluation and prescription of improvements for physical function in both daily and sport-specific activities. Furthermore, the systematic combination of these technologies provided potential end-users with a modality to perform exercise within, and correlated feedback based upon the end-user’s exercise performance. Data collection specific to biomechanics can provide both the end-user and their evaluators with critical feedback that can be used to modify movement efficiency, improve exercise capacity, and evaluate exercise performance. By coordinating both technologies and completing movement-based experiments, the systems were successfully integrated.
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Date Issued
2022
PURL
http://purl.flvc.org/fau/fd/FA00013952
Subject Headings
Augmented reality, Biomechanics, Sensors
Format
Document (PDF)
MECHANICAL FATIGUE TESTING OF HUMAN RED BLOOD CELLS USING THE ELECTRO-DEFORMATION METHOD
Title
MECHANICAL FATIGUE TESTING OF HUMAN RED BLOOD CELLS USING THE ELECTRO-DEFORMATION METHOD.
Creator
Qiang, Yuhao, Du, Sarah, Florida Atlantic University, College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
Abstract/Description
Human red blood cells (RBCs) must undergo severe deformation to pass through narrow capillaries and submicronic splenic slits for several hundred thousand times in their normal lifespan. Studies of RBC biomechanics have been mainly focused on cell deformability measured from a single application of stress using classical biomechanical techniques, such as optical tweezers and micropipette aspiration. Mechanical fatigue effect on RBCs under cyclic loadings of stress that contributes to the...
Show moreHuman red blood cells (RBCs) must undergo severe deformation to pass through narrow capillaries and submicronic splenic slits for several hundred thousand times in their normal lifespan. Studies of RBC biomechanics have been mainly focused on cell deformability measured from a single application of stress using classical biomechanical techniques, such as optical tweezers and micropipette aspiration. Mechanical fatigue effect on RBCs under cyclic loadings of stress that contributes to the membrane failure in blood circulation is not fully understood. This research developed a new experimental method for mechanical fatigue testing of RBCs using amplitude-modulated electro-deformation technique. Biomechanical parameters of individually tracked RBCs show strong correlations with the number of the loading cycles. Effects of loading configurations on the cellular fatigue behavior of RBCs is further studied. The results uniquely establish the important role of mechanical fatigue in influencing physical properties of biological cells. They further provide insights into the accumulated membrane damage during blood circulation, paving the way for further investigations of the eventual failure of RBCs in various hemolytic pathologies.
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Date Issued
2019
PURL
http://purl.flvc.org/fau/fd/FA00013340
Subject Headings
Red blood cells, Erythrocytes--Deformability, Biomechanics--Research--Methodology
Format
Document (PDF)
Testing Momentum Enhancement Of Ribbon Fin Based Propulsion Using A Robotic Model With An Adjustable Body
Title
Testing Momentum Enhancement Of Ribbon Fin Based Propulsion Using A Robotic Model With An Adjustable Body.
Creator
English, Ian L., Curet, Oscar M., Florida Atlantic University, College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
Abstract/Description
A robotic ribbon fin with twelve independent fin rays, elastic fin membrane, and a body of adjustable height was developed for this thesis specifically to test the 1990 theory put forth by Lighthill and Blake that a multiplicative propulsive enhancement exists for Gymnotiform and Balisiform swimmers based on the ratio of body and fin heights. Until now, the theory has not been experimentally tested. Proof of such a momentum enhancement could have a profound effect on unmanned underwater...
Show moreA robotic ribbon fin with twelve independent fin rays, elastic fin membrane, and a body of adjustable height was developed for this thesis specifically to test the 1990 theory put forth by Lighthill and Blake that a multiplicative propulsive enhancement exists for Gymnotiform and Balisiform swimmers based on the ratio of body and fin heights. Until now, the theory has not been experimentally tested. Proof of such a momentum enhancement could have a profound effect on unmanned underwater vehicle design and shed light on the evolutionary advantage to body-fin ratios found in nature, shown as optimal for momentum enhancement in Lighthill and Blake’s theory. Thrust tests for various body heights were conducted in a recirculating flow tank at different flow speeds and fin flapping frequencies. When comparing different body heights at different frequencies to a ’no-body’ thrust test case at each frequency no momentum enhancement factor was found. Data in this thesis indicate there is no momentum enhancement factor due to the presence of a body on top of an undulating fin.
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Date Issued
2016
PURL
http://purl.flvc.org/fau/fd/FA00004682, http://purl.flvc.org/fau/fd/FA00004682
Subject Headings
Animal locomotion, Animal mechanics, Biomechanics, Computers, Special purpose, Oceanographic submersibles, Robotics
Format
Document (PDF)
Validity of Linear Position Transducers Versus the Optotrak Certus 3D Motion Capture System
Title
Validity of Linear Position Transducers Versus the Optotrak Certus 3D Motion Capture System.
Creator
Goldsmith, Jacob A., Zourdos, Michael C., Florida Atlantic University, College of Education, Department of Exercise Science and Health Promotion
Abstract/Description
The purpose of this study was to investigate the validity of linear position transducers (LPTs), The Open Barbell System (OBS) and Tendo Weightlifting Analyzer System (TWAS), in comparison to criterion measure Optotrak Certus (OC3D). Further, we aimed to compare LPTs against each other. Twenty-five resistance-trained males were recruited, and reported to the laboratory for one day of data collection. Subjects performed one-repetition maximum (1 RM) testing of the squat, then had a...
Show moreThe purpose of this study was to investigate the validity of linear position transducers (LPTs), The Open Barbell System (OBS) and Tendo Weightlifting Analyzer System (TWAS), in comparison to criterion measure Optotrak Certus (OC3D). Further, we aimed to compare LPTs against each other. Twenty-five resistance-trained males were recruited, and reported to the laboratory for one day of data collection. Subjects performed one-repetition maximum (1 RM) testing of the squat, then had a standardized rest before completing one set to failure with 70% 1 RM. There was no significant difference in average velocity (AV) between either LPT vs. OC3D. T-tests revealed significant differences between LPTs and OC3D peak velocity (PV) (OBS: p=0.02080; TWAS: p<0.01). A significant difference was detected between OBS and TWAS PV (p<0.01). OBS and TWAS demonstrated concurrent validity compared to OC3D for AV (OBS: p=0.2014; TWAS: p=0.5466). Neither LPT was a valid measure ofPV (OBS: p=0.0208; TWAS: p<0.01).
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Date Issued
2016
PURL
http://purl.flvc.org/fau/fd/FA00004711, http://purl.flvc.org/fau/fd/FA00004711
Subject Headings
Biomechanics, Computers, Special purpose, Coordinate measuring machines, Mechatronics, Medical electronics -- Instrumentation, Transducers
Format
Document (PDF)
planar cable-driven robotic device for physical therapy assistance
Title
A planar cable-driven robotic device for physical therapy assistance.
Creator
Morris, Melissa M., College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
Abstract/Description
The design and construction of a tri-cable, planar robotic device for use in neurophysical rehabilitation is presented. The criteria for this system are based primarily on marketability factors, rather than ideal models or mathematical outcomes. The device is designed to be low cost and sufficiently safe for a somewhat disabled individual to use unsupervised at home, as well as in a therapist's office. The key features are the use of a barrier that inhibits the user from coming into contact...
Show moreThe design and construction of a tri-cable, planar robotic device for use in neurophysical rehabilitation is presented. The criteria for this system are based primarily on marketability factors, rather than ideal models or mathematical outcomes. The device is designed to be low cost and sufficiently safe for a somewhat disabled individual to use unsupervised at home, as well as in a therapist's office. The key features are the use of a barrier that inhibits the user from coming into contact with the cables as well as a "break-away" joystick that the user utilizes to perform the rehabilitation tasks. In addition, this device is portable, aesthetically acceptable and easy to operate. Other uses of this system include sports therapy, virtual reality and teleoperation of remote devices.
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Date Issued
2007
PURL
http://purl.flvc.org/FAU/FADTsup3358410p
Subject Headings
Medical physics, Robotics, Biomechanics, Physical therapy, Technological innovations, Neural networks (Computer science)
Format
Set of related objects
TO BUILD AN INVASIVE PREDATOR: INVESTIGATING THE MECHANICAL ROLE OF LIONFISH SPINES ON DEFENSE
Title
TO BUILD AN INVASIVE PREDATOR: INVESTIGATING THE MECHANICAL ROLE OF LIONFISH SPINES ON DEFENSE.
Creator
Galloway, Katherine Ann, Porter, Marianne E., Florida Atlantic University, Department of Biological Sciences, Charles E. Schmidt College of Science
Abstract/Description
The red lionfish, Pterois volitans, has arguably become the most successful marine invasive species to date. Yet, despite the invasion success of P. volitans, little is known about the morphology, physiology, and ecology of this species in their native and invaded habitats. The majority of recent studies have focused on the migration of P. volitans into new regions, digestion, and bacterial infections. Knowledge is lacking on the body plan of the invasive lionfish, specifically the numerous...
Show moreThe red lionfish, Pterois volitans, has arguably become the most successful marine invasive species to date. Yet, despite the invasion success of P. volitans, little is known about the morphology, physiology, and ecology of this species in their native and invaded habitats. The majority of recent studies have focused on the migration of P. volitans into new regions, digestion, and bacterial infections. Knowledge is lacking on the body plan of the invasive lionfish, specifically the numerous venomous spines that are protruding outward, making the body less streamlined. In this study we quantified the mechanical properties (bending and puncture) of the venomous spines of P. volitans, and related these properties to the cross-sectional morphology. We also documented variation in the cross-sectional morphology of spines from other lionfish species in their native regions. Lastly, we documented the dorsal spine joint morphology of the first three dorsal spines and the in situ range of motion as tissues were removed. We found that the long, numerous dorsal spines absorb more energy but are less stiff than the pelvic and anal spines. In addition, we found that the anal and pelvic spines are more effective at puncturing buccal skin from sharks and grouper. We found that the removal of connective tissue significantly changes lateral movement (abduction) for the first three dorsal spines. The removal of the fin sheath significantly alters forward movement (extension) for the first two dorsal spines. From morphology, mechanical property, and range of motion data for P. volitans, we propose that the numerous long dorsal spines are primarily used for intimidation, and are not as effective defense structures as the pelvic and anal spines. Having a substantial amount of intimidating, venomous spines may allow for the lionfish to conserve energy for other highly metabolically costly activities other than warding off predators, such as digestion and reproduction. Future studies could focus on the amount of venom in each spine, how long it takes for the venom to be made and replaced, how the venomous spines affect hydrodynamic flow, and in vivo range of motion during swimming and striking.
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Date Issued
2020
PURL
http://purl.flvc.org/fau/fd/FA00013512
Subject Headings
Red lionfish, Pterois volitans, Spines (Zoology), Mechanical properties of biological structures, Biomechanics
Format
Document (PDF)
A Hybrid System for Simulation of Athletic Activities Related to Lower Extremity Biomechanics
Title
A Hybrid System for Simulation of Athletic Activities Related to Lower Extremity Biomechanics.
Creator
Trepeck, Cameron, Hashemi, Javad, Florida Atlantic University, College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
Abstract/Description
In this dissertation, the design and development of a hybrid robotic system that simulates dynamic biomechanical tasks of the lower extremity with emphasis on knee and hip joints are presented. The hybrid system utilizes a mechanical hip and a cadaveric knee/ankle component and can accelerate the whole complex towards the ground. This system is used to simulate complex athletic movements such as landing from a jump at various anatomical orientations of the lower extremity with muscle action....
Show moreIn this dissertation, the design and development of a hybrid robotic system that simulates dynamic biomechanical tasks of the lower extremity with emphasis on knee and hip joints are presented. The hybrid system utilizes a mechanical hip and a cadaveric knee/ankle component and can accelerate the whole complex towards the ground. This system is used to simulate complex athletic movements such as landing from a jump at various anatomical orientations of the lower extremity with muscle action. The dynamic response of the lower extremity is monitored and analyzed during impulsive contact between the ground and the cadaveric leg. The cadaveric knee is instrumented to measure strain of the Anterior Cruciate Ligament (ACL) during simulated high impact sports activities. The mechanical hip allows various kinematics of the hip including flexion as well as abduction. In addition to the flexion and abduction of the mechanical hip, the controlled flexion and extension of the cadaveric knee allows for simulation of complex tasks such as landing from a jump. A large number of tests were performed at various anatomical positions utilizing this device to simulate landing from a jump. ACL strain was measured during these tasks using a Differential Variance Resistance Transducer (DVRT). Ground Reaction Force and muscle forces were measured and monitored using AmCell load cells recorded using the LabView software. one-inch and 6-inch jump landing heights were used for all the simulations. The tests were performed at differing angles of hip flexion (0°, 30°, 45°, 60°) and at two different ankle positions. Plantar flexion and flat-footed landing conditions were simulated and compared in all degrees of hip flexion. These tests were repeated with and without hip abduction in order to study the effects of these landing positions on ACL strain. Hip flexion was found to effect ACL strain: as angle of hip flexion increases, ACL strain decreases. This occurred in both abducted and non-abducted hip positions. Ankle landing position had an effect only in small drop heights, while hip abduction had an effect in large drops. Future tests must be completed to further study these effects. These studies showed that the robotic system can simulate dynamic tasks, apply muscle forces, and move the cadaveric tissue in three dimensional biomechanical positions.
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Date Issued
2017
PURL
http://purl.flvc.org/fau/fd/FA00004898, http://purl.flvc.org/fau/fd/FA00004898
Subject Headings
Musculoskeletal system--Wounds and injuries., Musculoskeletal system--Mechanical properties., Biomechanics--Computer simulation., Human mechanics., Artificial joints.
Format
Document (PDF)