Performance and Psychophysiological Effects of Light-Guided Pacing During a 5000-m Run.

Purpose: In world-class middle- and long-distance running races, a Wavelight signal has recently been used as a pacing guide for setting records. The aim of the present study was to compare performance and psychophysiological effects between light-guided, drafting, and nonassisted pacing conditions in distance runners.

Methods: Fifteen male middle- and long-distance runners of national and regional standard ran three 5000-m time trials in a counterbalanced order with the following pacing distribution: the first 4000 m and last 1000 m were covered at submaximal and maximal intensities, respectively.

Effect of high hydrostatic pressure on the physicochemical characteristics of low sodium mortadella containing a high level of mechanically deboned poultry chicken meat.

High hydrostatic pressure (HHP) is an emerging technology that can be applied to improve the functional properties of emulsified meat products. The aim of this study was to evaluate the effect of HHP (100 and 200 MPa) on low-sodium mortadella produced with high content of mechanically deboned poultry meat (MDPM). Seven treatments were produced: FC (2.

Multiday Beetroot Juice Ingestion Improves Some Aspects of Neuromuscular Performance in Semi-Professional, Male Handball Players: A Randomized, Double-Blind, Placebo-Controlled, Crossover Study.

The aim of this study was to examine the effects of multiday beetroot juice ingestion on neuromuscular performance in semi-professional, male handball players. Twelve handball players competing in the second Spanish national division received 70 ml of beetroot juice (6.4 mmol of nitrate [NO3-]) or 70 ml of a placebo beetroot juice (0.

Impact of early work start on mental health outcomes in older adults: A cross-sectional study from Ecuador.

Objective: This study assesses the impact of the age at which individuals first begin working on the odds of developing mental health disorders among older adults in Ecuador.

Methods: Data from the 2009 Survey of Health, Well-being, and Aging (SABE) encompassing 3093 elderly participants from mainland Ecuador were analyzed. We employed binary logistic regression to explore the association between the age at which individuals started working and their subsequent mental health status.

Mechanism of actin filament severing and capping by gelsolin.

Gelsolin is the prototypical member of a family of Ca-activated F-actin severing and capping proteins. Here we report structures of Ca-bound human gelsolin at the barbed end of F-actin. One structure reveals gelsolin's six domains (G1G6) and interdomain linkers wrapping around F-actin, while another shows domains G1G3-a fragment observed during apoptosis-binding on both sides of F-actin.