Martina Navarro

University of Portsmouth · Department of Sport and Exercise Science

We investigated whether in an in-situ collision avoidance experiment cyclists regulate braking by adopting an affordance-based control strategy. Within an affordance-based control strategy for braking, deceleration is controlled relative to the maximum achievable deceleration rather than by nulling out deviations from ideal deceleration, and potent...

Affordance-based control theory claims that a critical constraint on successful braking is to keep the ideal deceleration required to stop (Dideal) below the maximum achievable deceleration (Dmax). Within this constraint, different braking styles are possible. We investigated whether active- and inactive-cyclists show different styles of braking in...

The aim of this study was to investigate the effects of PD and aging on gaze behavior and performance of drivers in a simulated task. Ten drivers with PD, ten neurologically healthy older drivers, and ten neurologically healthy younger adult drivers were asked to drive in a car simulator for three minutes, maintaining car speed between 100 and 120...

Sports and athletes’ highest performance offer a fascinating scenario to investigate perceptual-motor expertise. The remarkable work of Joan Vickers has captured this opportunity and built a valuable experimental paradigm. Our commentary emphasizes what information is being acquired during the period of Quiet Eye (QE), capable to produce successful...

During curve negotiation, drivers tend to look at the tangent point of the curve (TP) to control steering. There is a lack of evidence on how experiences of natural and simulated driving are related. The purpose of this study was to investigate effects of experience in natural driving on gaze behavior of racing videogame players. Additionally, it a...

The visually guided braking has been investigated through information-based control approaches such as tau-dot strategy, which is mostly focused on how invariant optical variables regulate deceleration rate; however, the role of affordances on braking control is still unclear. The aim of the study was to determine whether cyclists take into account...

The aims of the study were to investigate the effects of race gaming experience in playing racing video games on gaze behaviour and performance of drivers and the effects of natural driving experience on gaze behaviour and performance of gamers. Thirty participants, divided into drivers-gamers, drivers-non-gamers and non-drivers-gamers, were asked...

This study tested whether adverse effects of state anxiety on attention and performance may be modulated by experience. Sixteen experienced and eleven inexperienced drivers drove in a simulator under low-and high-stress conditions. Anxiety was manipulated by competition, the presence of an evaluator, external video camera, and traffic noise. Most d...

O objetivo deste estudo foi investigar o efeito dos movimentos sacádicos, horizontal e vertical, dos olhos no desempenho do controle postural de adultos jovens e idosos durante a manutenção da postura em pé em diferentes bases de apoio. Quinze adultos jovens e quinze idosos permaneceram parados em pé, sobre uma plataforma de força, nas bases de apo...

This study tested the use of entropy to identify changes on behavior of drivers under pressure. Sixteen experienced drivers drove in a simulator wearing a head-mounted eye tracker under low-and high-anxiety conditions. Anxiety was induced by manipulating some psychological factors such as peer-pressure. Fixations transitions between AOIs (lane, spe...

The aim of this study was to investigate the effects of horizontal and vertical saccadic eye movements on postural control of young and older adults during the maintenance of upright stance in different bases of support. Fifteen young and fifteen older adults were asked to stand upright on a force plate in both bipedal and semi tandem bases of supp...

A ansiedade aumenta a alocação da atenção para estímulos salientes e/ou ameaçadores, tornando os indivíduos mais distraídos. No contexto de condução, essa alteração modula o comportamento do motorista e aumenta o risco de envolvimento em acidentes. Indivíduos ansiosos apresentam um maior número de colisões e passam mais tempo dirigindo fora dos lim...

Purpose: The purpose of this study was to compare the kicking performance of young soccer players in the U9 to U20 age groups. Method: Three hundred and sixty-six Brazilian players were evaluated on an official pitch using three-dimensional kinematics to measure (300 Hz) ball velocity (Vball), foot velocity (Vfoot), Vball/Vfoot ratio, last stride l...

A b s T R AC T Sports and athletes' highest performance offer a fascinating scenario to investigate perceptual-motor expertise. The remarkable work of Joan Vickers has captured this opportunity and built a valuable experimental paradigm. Our commentary emphasizes what information is being acquired during the period of Quiet Eye (QE), capable to pro...

A exploração visual na tarefa de dirigir é específica para obter informações do ambiente. Motoristas experientes apresentam uma estratégia de exploração visual mais eficiente do que motoristas novatos. No contexto de condução, a ansiedade altera o comportamento do motorista e aumenta o risco de envolvimento em acidentes. A Teoria de Controle Atenci...

Objective: To assess whether there is any difference in the oscillation of the plantar pressure center in single-leg stance between athletes and non-athletes with and without ankle sprains. Methods: 54 volunteers performed four static assessments and one dynamic assessment while standing on one foot on a baropodometer, barefoot, for 10 s in each...

Avaliar se há diferença quanto à oscilação do centro de pressão plantar em apoio unipodal entre atletas e não atletas com e sem entorse de tornozelo.

Abstract The keeper-independent strategy, in which a football penalty kicker selects a target location in advance and ignores the goalkeeper's actions during the run-up, has been suggested to be the preferable strategy for taking a penalty kick. The current in-field experiment investigated the question of whether the goalkeeper can indeed be ignore...

We investigated the effects of high pressure on the point of no return or the minimum time required for a kicker to respond to the goalkeeper's dive in a simulated penalty kick task. The goalkeeper moved to one side with different times available for the participants to direct the ball to the opposite side in low-pressure (acoustically isolated lab...