A5002679065- Occupational Health and Performance
- Muscle activation and electromyography studies
- Prosthetics and Rehabilitation Robotics
- Sports Performance and Training
- Stroke Rehabilitation and Recovery
- Ergonomics and Musculoskeletal Disorders
- Musculoskeletal pain and rehabilitation
- Sports injuries and prevention
- Mechanics and Biomechanics Studies
- Advanced Sensor and Energy Harvesting Materials
- Agriculture and Farm Safety
- Aerospace and Aviation Technology
- Artificial Intelligence in Healthcare and Education
- Species Distribution and Climate Change
- Cardiovascular and exercise physiology
- Vehicle Noise and Vibration Control
- Human Motion and Animation
- Medical Imaging and Analysis
- Team Dynamics and Performance
- Orthopaedic implants and arthroplasty
- Human Pose and Action Recognition
- Advanced X-ray and CT Imaging
- Human-Automation Interaction and Safety
- Innovative Energy Harvesting Technologies
- Grit, Self-Efficacy, and Motivation
United States Army Combat Capabilities Development Command
2022-2025
Combat Capabilities Development Command Soldier Center
2014-2025
Boise State University
2016
Legacy Health
2009
In the current study, ten participants walked for two hours while carrying no load or a 40 kg load. During second hour, treadmill grade was manipulated between constant downhill changing flat, uphill, and grades. Throughout prolonged walk, performed cognitive tasks, an auditory go no/go task visual target detection task. The main findings were that number of false alarms increased over time in loaded condition relative to unloaded on There also shifts response criterion towards responding...
Enhancing the capabilities of dismounted combatant has been an enduring goal international military research communities. Emerging developments in exoskeleton technology offers potential to augment combatant’s capabilities. However, ability determine value proposition a context is difficult due variety methods and metrics used evaluate previous devices. The aim this paper was present standard framework for evaluation assessment exoskeletons use military. A structured systematic methodology...
Abstract Background Load carriage is common in a wide range of professions, but prolonged load associated with increased fatigue and overuse injuries. Exoskeletons could improve the quality life these professionals by reducing metabolic cost to combat muscle activity prevent Current exoskeletons have reduced loaded walking up 22% relative device no assistance when assisting one or two joints. Greater reductions may be possible optimized entire leg. Methods We used human-in the-loop...
Abstract Background Autonomous exoskeletons will need to be useful at a variety of walking speeds, but it is unclear how optimal hip–knee–ankle exoskeleton assistance should change with speed. Biological joint moments tend increase speed, and in some cases, optimized ankle torques follow similar trend. Ideal torque may also The purpose this study was characterize the relationship between assistance, benefits metabolic energy cost. Methods We reduce cost for three able-bodied participants 1.0...
For exoskeletons to be successful in real-world settings, they will need effective across a variety of terrains, including on inclines. While some single-joint have assisted incline walking, recent successes level-ground assistance suggest that greater improvements may possible by optimizing the whole leg. To understand how exoskeleton should change with incline, we used human-in-the-loop optimization find whole-leg torques minimized metabolic cost range grades. We optimized for three...
Existing toolkits for analyzing movement dynamics in animal ecology primarily focus on individual or group behavior habitats without predefined boundaries, while methods studying human activity often cater to bounded environments, such as team sports played defined fields. This leaves a gap tools modeling and large-scale, unbounded, semi-constrained environments. Examples of contexts include tourist groups, cycling teams, search rescue military units. To address this issue, we survey...
Abstract BackgroundLoad carriage is a typical activity in wide range of professions, but prolonged load associated with increased fatigue and overuse injuries. Exoskeletons could improve the quality life these professionals by reducing metabolic cost to combat muscle prevent Current exoskeletons have reduced loaded walking up 23% when assisting one or two joints. Greater reductions may be possible optimized assistance entire leg. MethodsWe used human-in the-loop optimization optimize...
The Army Combat Fitness Test (ACFT), the U.S. Army’s new physical fitness test, was introduced to assess operationally relevant combat fitness. present study assessed relationship between performance in individual events of ACFT and a simulated marksmanship task. Results indicate that higher scores align with better lethality, mobility, stability. Notably, upper body strength, explosiveness, agility demonstrated significant positive associations effectiveness. However, nuances emerged, some...
Ankle-based exoskeletons have demonstrated metabolic benefits during steady-state walking; however, variability exists in individual adaptation timelines necessary to achieve those benefits. This study assessed for and gait-related while wearing an ankle-based exoskeleton powered (EXOP) compared unpowered (EXNP) no device worn (NOEX). Metabolic (VO2) biomechanics data were collected 14 participants walked on a treadmill at 1.3 m/s six sessions. To better understand responses exoskeletons,...
Personnel performance under stress hinges on various factors, including individual traits, training, context, mental and physiological states, task demands. This study explored the link between traits of military personnel their outcomes in five domains: move, shoot, communicate, navigate, sustain.
Abstract Background Effective autonomous exoskeletons will need to be useful at a variety of walking speeds, but we do not know how optimal exoskeleton assistance should change with speed. Optimal may increase speed similar biological torque changes or well-tuned profile effective speeds. Methods We optimized hip-knee-ankle reduce metabolic cost for three participants 1.0 m/s, 1.25 m/s and 1.5 m/s. measured cost, muscle activity, kinematics. performed two tailed paired t-tests determine...
Abstract For exoskeletons to be successful in real-world settings, they will need effective across a variety of terrains, including on inclines. While some single-joint have assisted incline walking, recent successes level-ground assistance suggest that greater improvements may possible by optimizing the whole leg. To understand how exoskeleton should change with incline, we used human-in-the-loop optimization find whole-leg torques minimized metabolic cost range grades. We optimized for...
Due to the unique energy requirements of combat Soldiers, military is investigating use harvesting technology that uses kinetic human movement generate electrical power. The current system under investigation an oscillating backpack used carry soldier load and power during movement. However, effects on Soldier performance dynamic tasks are unknown. PURPOSE: purpose this study was Inertial Measurement Units (IMUs) analyze agility task while wearing either a standard issue Modular Lightweight...
A sudden stop while running with body-borne load (i.e. run-to-stop (RTS)) reportedly causes abnormally high knee joint loads, increasing risk of injury. Performing a reactive RTS may exacerbate these requiring greater lower limb muscle force to successfully complete the maneuver, further injury risk. Currently it is not understood whether forces increase addition during RTS, and they are exaggerated tasks. PURPOSE: The purpose this study was determine if peak extensor flexor pre-planned...
The assessment of fracture healing is aided by identifying features in roentgenographs that signify bone union. In comminuted or multi-part fractures, external callus formation relates to mechanical rigidity at the site.[1] However, inter- and intra-observer variability 20–25% exists when physicians evaluate callus.[2] Furthermore, current classification systems lose information converting continuous into categorical variables.[3] These limitations have restricted clinical utility plain...