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Impact loading has been linked to the increased risk of tibial stress fracture and plantar fasciitis in runners. This study investigated the combined effects of foot strike pattern, step rate, and anterior trunk lean gait modifications on impact loading. Nineteen healthy runners received real-time b...
Understanding the biomechanics of spiking a volleyball may enable new techniques for prevention and rehabilitation of non-traumatic shoulder injuries particularly in adolescent volleyball players. This study compares shoulder kinematics data collected from high school volleyball players with previou...
Field hockey is a team sport played through an implement: the hockey stick and it imposes a wide range of physical demands on players such as speed, muscle endurance, power and agility. Using an implement while playing has been proven to affect players both in terms of body posture and metabolic dem...
A comparison of joint coordinate systems (JCS) of the wrist has been conducted to provide a more clinically applicable alternative to the International Society of Biomechanics recommendations. Changes in the hand coordinate frame affect measurements in the JCS more than the forearm frame. An alterna...
Jump landing manoeuvres in competitive downhill skiing are typical situations leading to ACL injuries. While, neuromuscular control is considered a key injury risk factor, optimum control strategies are unknown. The purpose of the study was to compute muscle activation patterns that minimize ACL for...
Humans are adept at running on rough terrains without falling. Previous modeling work hypothesizes that minimizing tangential collisions is critical for stability. By analyzing thousands of steps from overground rough terrain experiments of human runners, we show that the main mechanism to eliminate...
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We evaluated the Pneumatic Ergonomic Crutch (PEC), which consisted of a pneumatically-activated sleeve orthosis worn to improve wrist posture and loading when using a Lofstrand crutch. A spring-loaded piston pump at the PEC crutch tip was used to harvest pneumatic energy for pressuring the orthosis ...
In the preparatory measurements before launching the project in direct connection with the prepared European legislation in the field of tram safety from the point of view of pedestrians, an interesting fact was found. In Prague, it is still possible to meet trams with a front part designed in the 5...
The cervical spine poses a high risk of paralysis when injured. Recently surgeons have begun using cervical total disc replacements (CTDR) to preserve motion when reconstructing the cervical spine. This researched focused on the construction of a 3D geometrical reconstruction of the full cervical sp...
Animals easily navigate complex terrain and can rapidly and safely reject unexpected perturbations. However, the underlying mechanism at the muscle-tendon level of this behaviour is unclear. To study this, we attach a real muscle-tendon unit to a novel bio-robotic interface that emulates interaction...
With the growing popularity of the sport of volleyball, there are concerns of lower extremity injuries in front-row players. Different landing mechanics experienced by the three front row positions give insight into possible causes of common injuries of players. Twelve female Division II collegiate ...
Gait analysis is essential in orthotics and prosthetics (O&P) practice. This pilot study aimed to determine the reliability of a simple 2D video-software analysis tool and to compare it with 3D gait laboratory. Gait trials were undertaken with 10 able-bodied participants. The 2D video-software syste...
Self-paced treadmills (SPT) that allow participants to self-select their preferred speed and naturally vary speed may better replicate the variability of overground (OG) running. This study assessed the validity of a SPT design in comparison to fixed-speed (FST) and OG running conditions. Four of th...
Children with Autism Spectrum Disorder (ASD) exhibit different movement patterns relative to their peers with typical development (TD). Few distinguishable patterns have been determined, although some have been hypothesized. The current study analysed whether coordination variability (vCRP) of the l...
Transient responses and whole-trial estimates of commonly used center of pressure parameters have been reported to provide clinically-relevant insight into postural control. In this study, correlations between transient features of commonly used center of pressure parameters and whole-trial estimate...
Afferent inputs of cutaneous sensitivity (CS) are essential for the control of movements. Motor control is affected already in early stages of dementia, but CS had not yet been studied. We investigated CS at the foot and hand in MCI subjects compared to controls. We only found gender differences for...
Exploratory Factor Analysis was used to determine the optimal athlete movement domains and the associated key metrics from 55 metrics collected from athletes performing a wheelchair (WC) rugby field test. The analysis demonstrated that a minimum number of factors can be groups into domains. This can...
Running gait kinetics and kinematics can be measured in the lab using force-instrumented treadmills and 3D motion capture. However, these tools are not feasible for use in the daily training environment of recreational and elite runners. A prototype wearable smart garment (SG) has been developed to ...
Purpose: The purpose of this study was to compare the differences in frequency, and location of head impact events per match between lightweight and heavyweight MMA fighters. Methods: 30 videos of professional MMA bouts were viewed to document all impacts to the head. Independent sample t-tests were...
Previous research has shown that program-based identification was a reliable method to identify lumbar spine vertebrae for epidural procedures. The consistency and temporal efficiency of this program-based identification (PBI) was found to be vastly greater than that of human identification. Likewis...
There is a well-established relationship between anterior cruciate ligament reconstruction (ACLR) and the premature development of osteoarthritis (OA) [1]. Transverse relaxation (T2) time, a quantitative magnetic resonance imaging (qMRI) parameter, is capable of quantifying the degradation of the ca...
Patients with developmental dysplasia of the hip (DDH) adopt movement compensations to stabilize the hip during sloped walking, but compensations vary across degrees of inclination. Patients with DDH increased activation demand on the hip abductors during level walking, while increasing the co-activ...
This simulation study examined the effect of the constrained center of mass (COM) trajectory on spatiotemporal organization of the via-angles, i.e., the via-posture of a kinematic chain, in order to explore the determinant of the joint coordination. A minimum-jerk criterion with via-point constraint...
The study examined the electromyographic activation of major muscle groups during lumbar stabilization exercises using ‘LevelBelt’ alignment. Significant difference are seen during static and dynamic exercises with accurate lumbo-pelvis alignment highlighting the importance of proper objective m...
This study explored whether player position in baseball influenced countermovement jumping strategies and their resultant force-time profiles. Subjects performed a series of three countermovement jumps on a force platform. Eccentric rate of force development (RFD), peak concentric force, countermove...
Dynamic stability of trunk movements can provide important information about spine control during movement tasks. The Pilates method focus to maintain trunk stability during exercises. The objective of this study was to compare trunk stability between two practitioner’s levels and two intensities ...
The implementation of the non-linear analysis method, Detrended Fluctuation Analysis (DFA), has been hindered by a lack of consistency in its application. Our study sought to establish recommendations for the box size ranges over which the output of DFA, alpha (α), is calculated for postural contro...
Pitches made during a game are highly monitored and regulated in all levels of baseball with no attention made to any other throws, especially in the bullpen. Assumptions have been made that bullpen throws are not as stressful as in game pitches and do not need to be monitored; however, there are no...
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