Validity and reliability of running gait measurement with the ViMove2 system.

Running biomechanics have traditionally been analysed in laboratory settings, but this may not reflect natural running gait. Wearable technology has the potential to enable precise monitoring of running gait beyond the laboratory. This study aimed to evaluate the analytical validity and intra-session reliability of temporal running gait outcomes measured by the ViMove2 wearable system in healthy adults.

International Olympic Committee consensus statement on youth athletic development.

The health, fitness and other advantages of youth sports participation are well recognised. However, there are considerable challenges for all stakeholders involved-especially youth athletes-in trying to maintain inclusive, sustainable and enjoyable participation and success for all levels of individual athletic achievement. In an effort to advance a more unified, evidence-informed approach to youth athlete development, the IOC critically evaluated the current state of science and practice of youth athlete development and presented recommendations for developing healthy, resilient and capable youth athletes, while providing opportunities for all levels of sport participation and success.

Refractive change induced by the LASIK flap in a biomechanical finite element model.

Purpose: To study the effect of varying four parameters on the refractive change induced by the LASIK flap.

Methods: Using a variety of patient-specific data such as topography, pachymetry, and axial length, a finite element model is built. The model is used in a non-linear finite element analysis to determine the response and change in optical power of the cornea as a function of a material property of the cornea (corneal elasticity), flap diameter and thickness, and intraocular pressure.

Some numerical aspects of the training problem for feed-forward neural nets.

This paper considers the feed-forward training problem from the numerical point of view, in particular the conditioning of the problem. It is well known that the feed-forward training problem is often ill-conditioned; this affects the behaviour of training algorithms, the choice of such algorithms and the quality of the solutions achieved. A geometric interpretation of ill-conditioning is explored and an example of function approximation is analysed in detail.

The FUBI system for solar rating nonprescription eyewear.

Background: In an effort to develop a comprehensive method of rating nonprescription eyewear for its ability to protect the eye against solar damage, the FUBI (Fashion, Ultraviolet, Blue, and Infrared) System is presented. The system presents a numeric value, from Oto 100, for each of the three known harmful portions of the solar spectrum: ultraviolet UV), blue/violet (B), and infrared (IR). A fourth value was determined for the fashion (F) of the eyewear as it relates to protection of the eye against reflected or scattered radiation that is not transmitted through the eyewear.

Effects of Differing External Feedback Conditions on Rates of Self-Reinforcement.

The effects of differing external feedback conditions and the relationship of base rate/self-reinforcement and final rate/self-reinforcement were investigated. Participants in the study were 150 sixth grade boys and girls from middle and upper middle class homes. Each S's base rate/self-reinforcement level within the context of an ambiguous task was established in the initial phase of the study.