Abstract Archive

In this study, we aimed to clarify futsal shoe outsoles mechanical properties and demonstrate its effect on resultant performances of a v-cut manoeuvre functional test. One participant performed multiple trials of a pylon course using three shoes, each with different outsole’s dynamic coefficient ...

Bone loading due to daily physical activity over one week, was quantified from accelerometer data. Moderate-to-vigorous loading was positively associated with bone health of the left proximal femur. Adopting this level of activity in daily living may have sustained benefits for healthy ageing of bon...

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...

Acceleration measures may be collected for entire training sessions in real-world conditions using wearable sensors. The resulting data must be reduced to provide meaningful metrics. The aims of this study were to: (1) quantify the influence of binning methods on a cumulative damage metric based on ...

We have previously reported that intrinsic foot muscle activation increases when running in cushioned running shoes, compared to barefoot running. A potential explanation for this finding is that the central nervous system increases muscle activation, altering foot stiffness to accommodate the added...

We examined the effects of the ankle and metatarsophalangeal (MTP) joint angles on the length, thickness and stiffness of the human plantar fascia (PF) using magnetic resonance imaging and ultrasound shear wave elastography. We revealed that the ankle and MTP joint angles affected the length of PF, ...

Butterfly pull-up is a popular Crossfit exercise that requires unique biomechanical strategies to maximize performance. However, little is known regarding changes in butterfly pull-up biomechanics when performed until failure. In this study, the elbow, shank and thigh kinematics during butterfly pul...

Performance footwear is a system of design attributes tuned to deliver an athlete benefit. With strategically constructed samples, attributes can be investigated for their influence on biomechanical, energetic, physiological, and/or perceptual factors. In this talk, I will take you through our footw...

3D gait analysis provides insight into the lower limb biomechanics of knee osteoarthritis. We hypothesized that stressing the locomotor system through walking on an incline would amplify biomechanical differences in gait between participants with osteoarthritis and asymptomatic controls. Nineteen pa...

Biomechanical evaluations of people with hip-related pain are often conducted in male dominated cohorts with minimal female representation. This study shows that men and women move differently with task specific differences observed at the hip and knee and consistent differences across tasks high an...

Reactive balance training (RBT) using trip-like perturbations on a treadmill was implemented for four weeks among independent older adult residents of retirement communities. Training-induced improvements in trunk kinematics could be predicted from only trunk kinematics following trip-like perturbat...

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...

The purpose of this study was to determine the best combination of ground reaction force (GRF) parameters for maximizing power during the power snatch (PS). Ten skilled weightlifters completed a total of five PS trials with 60% of one repetition maximum. Vertical GRF (VGRF), horizontal GRF (HGRF), r...

Trabecular microstructure was characterized in the proximal humerus in murine models of preganglionic and postganglionic BPBI. The preganglionic injury group had detriments in trabecular bone (e.g., BMD) in the affected forelimb compared to sham and postganglionic injury, consistent with restricted ...

Skeletal muscle passive elastic modulus is an important material property which affects muscle and joint mechanics; yet, it is still poorly understood. Both intrafibrillar (primarily titin) and extrafibrillar (basement membrane) structures are suggested to bear passive tension. Here, we applied the ...

The aim of this study was to identify homogeneous subgroups of running gait patterns in asymptomatic subjects using 3-D kinematic data from the foot-ankle complex. Seventy-three healthy long-distance recreational runners were assessed for 3-D running kinematics. A Hierarchical Cluster Analysis was a...

It is very important to clarify the differences in full body joint kinematics between elite endurance runners (elite runners) and novice runners for developing gait retraining regimes. This study collected motion capture data of runners and performed principal component analysis (PCA) for the data. ...

The objective of this research was to determine the in vivo measurement precision (reproducibility) of magnetic resonance (MR) based finite element (FE) modeling outcomes. MR images (1.5T) of the left proximal femur of 13 participants were used to construct FE models. Precision errors of the FE outc...

Soft-tissue vibrations generate discomfort and thus require a greater muscle contribution to preserve an efficient motion. Besides, this may lead to an earlier onset of muscle fatigue. As a matter of fact, reducing tissue vibrations is of great interest from a comfort and performance standpoint. Thi...

Nonlinear weighting adjustments were implemented to study low back injury potential associated with variable compression exposures. This in vitro study exposed porcine spinal units to cyclic compression paradigms that had consistent and variable peak amplitudes until failure was detected. When weigh...

Immediate mobilization shows neuromuscular benefits, but lengthening of Achilles tendon (AT) could be a devastating problem. Here we describe the AT angle of clinical failure (CF) during cyclical mobilization in human cadaveric specimens that were repaired using the Dresden technique. Eight lower li...

Musculoskeletal simulation models are popular to investigate injury situations on a computer. The existing musculoskeletal simulation models typically consist of a rigid multi-body model and muscles. Rigid segments prevent some mechanical behaviour of bones from being considered. In this study a com...

Transtibial or below-knee prosthesis are known to have difficulty releasing heat, which can lead to prolonged, elevated residual limb skin temperatures inside the prosthesis and thermal discomfort. In this preliminary study, a thermal finite element analysis of a simplified, transtibial residual lim...

Knee valgus angles and moments during unanticipated motions have been previously identified as factors of anterior cruciate ligament injury (ACL). Prophylactic knee braces are knee braces that are designed to mitigate this and reduce the risk of injury. To determine the effectiveness of these braces...

The objective of this study is to restore a gastrocnemius-like ankle-knee coupling to individuals with lower limb amputation (ILLA), then 1) characterize how different gastrocnemius dynamics (e.g., stiffnesses) affect whole-body gait biomechanics and 2) explore which gastrocnemius behaviors are most...

Today's midsole materials combine increased compliance with high resilience and reduce the metabolic cost of running substantially. By how much can these reported metabolic savings improve distance running performance?

This study examines data collected using an infrared passive marker-based motion capture system and an inertial measurement unit motion capture system and assesses whether the data is comparable across systems. Sensors from both systems were placed on the subjects and data was collected simultaneous...

This Study compared leg, ankle, and knee stiffness during running between a maximal and traditional shoe before and after a 6-week acclimation period to maximal shoes. Leg stiffness was significantly higher in the maximal shoes, while ankle stiffness was significantly higher in the traditional shoe.

A coordinated pattern of multi-muscle activation is essential to produce efficient reaching trajectories. Disruption of these coordinated activation patterns, termed synergies, is evident following stroke and results in reaching deficits; however, preclinical investigation of this phenomenon has bee...