Search results for " performance."
showing 10 items of 2429 documents
Disentangling effects of auditory distraction and of stimulus-response sequence
2009
When we pay attention to one task, irrelevant changes may interfere. The effect of changes on behavioral and electrophysiological responses has been studied in two separate research fields: Research on Distraction states that a rare irrelevant change takes attention away from the primary task. Research on Sequences states that any change in stimulus or response incurs a cost or benefit depending on the kind of change. To disentangle distraction from sequence effects, we made task-irrelevant changes rare in one condition and frequent in another while also assessing stimulus and response changes from trial to trial. Participants used key presses to classify syllables presented in two differen…
Relationships between Coping Strategies and Defense Mechanisms in sport performance
2008
In an exploratory study, the relationships between two major concepts in psychological adjustment, coping strategies, and defense mechanisms were investigated. Sport competition is an example of a real-world context in which people's responses to stressful situations can be investigated. The extent to which participants reported different uses of coping strategies and defense mechanisms was assessed in terms of performance. 26 elite kayakers were classified into one of two groups, depending on the discrepancy between their standard performance and their performance in competition. Correlations were found among the coping strategies of seeking social support, positive reappraisal/planful pr…
Mental Toughness Moderates Social Loafing in Cycle Time-Trial Performance
2016
The purpose of this study was to determine if mental toughness moderated the occurrence of social loafing in cycle time-trial performance.Twenty-seven men (Mage = 17.7 years, SD = 0.6) completed the Sport Mental Toughness Questionnaire prior to completing a 1-min cycling trial under 2 conditions: once with individual performance identified, and once in a group with individual performance not identified. Using a median split of the mental toughness index, participants were divided into high and low mental toughness groups. Cycling distance was compared using a 2 (trial) × 2 (high-low mental toughness) analysis of variance. We hypothesized that mentally tough participants would perform equall…
The relationship of task self-efficacy and role efficacy beliefs to role performance in Spanish youth soccer
2004
The aim of this study was to examine the relationship between role efficacy and role performance after controlling for the effects of task self-efficacy. Two hundred and ninety-five Spanish youth soccer players from 20 teams completed self-report measures of task self-efficacy, role efficacy and role performance at the mid-point of a competitive season. The 20 team coaches also provided ratings of each of their players' role performances at mid-season. Consistent with hypotheses, bivariate correlations showed task self-efficacy and role efficacy were positively related to role performance ratings. Hierarchical regression analyses revealed that role efficacy contributed significantly to the …
Discriminatory power of water polo game-related statistics at the 2008 Olympic Games
2011
The aims of this study were (1) to compare water polo game-related statistics by context (winning and losing teams) and sex (men and women), and (2) to identify characteristics discriminating the performances for each sex. The game-related statistics of the 64 matches (44 men's and 20 women's) played in the final phase of the Olympic Games held in Beijing in 2008 were analysed. Unpaired t-tests compared winners and losers and men and women, and confidence intervals and effect sizes of the differences were calculated. The results were subjected to a discriminant analysis to identify the differentiating game-related statistics of the winning and losing teams. The results showed the difference…
Effect of skiing speed on ski and pole forces in cross-country skiing.
2008
Purpose: The present study characterized pole and ski forces in classical technique cross-country skiing. Eight elite junior cross-country skiers performed diagonal skiing at 65%, 75%, 90%, and 100% of maximum speed on a stable 100-m-low uphill (2.5[degrees]). Method: The ski and the pole forces (vertical (Fz) and horizontal (Fy) directions) on the right and left sides were recorded separately when the skier skied over a special custom-made force platform system placed at the end of the uphill course. The entire system consisted of four separate 20-m-long rows of 1-m-long force plates connected in series, row by row. Results: When the forces were averaged for the various functional phases o…
Screen media usage, sleep time and academic performance in adolescents: clustering a self-organizing maps analysis.
2014
Screen media usage, sleep time and socio-demographic features are related to adolescents' academic performance, but interrelations are little explored. This paper describes these interrelations and behavioral profiles clustered in low and high academic performance. A nationally representative sample of 3,095 Spanish adolescents, aged 12 to 18, was surveyed on 15 variables linked to the purpose of the study. A Self-Organizing Maps analysis established non-linear interrelationships among these variables and identified behavior patterns in subsequent cluster analyses. Topological interrelationships established from the 15 emerging maps indicated that boys used more passive videogames and compu…
Type 2 diabetes and cognitive impairment in an older population with overweight or obesity and metabolic syndrome: baseline cross-sectional analysis …
2018
This study cross-sectionally examines in the elderly population: (a) the association of type 2 diabetes with executive function (EF); (b) the effect of BMI on both type 2 diabetes and EF; (c) the association between glycaemia control and EF in type 2 diabetes. 6823 older individuals with overweight/obesity and metabolic syndrome participating in the PREDIMED-PLUS study, were assessed with a battery of cognitive tests and a medical interview. ANOVA showed a significantly worse performance on EF in type 2 diabetes vs. non-diabetic individuals. Two complementary models were displayed: (1) in the whole sample, the presence of type 2 diabetes, depressive symptoms and BMI had a direct negative ef…
Synergy of features enables detection of texture defined figures
2006
Traditional theories of early visual processing suggest that elementary visual features are handled in parallel by independent neural pathways. We studied the interaction of orientation and spatial frequency in the discrimination of Gabor random fields. Target textures differed from reference textures either in mean feature value, showing an edge-like transition between both textures (edge defined), or in the degree of feature homogeneity with smooth transitions (region defined). Irrespective of the kind of texture definition, we found strong cue summation for targets defined by both cues simultaneously, provided two conditions were fulfilled. First, they were barely discriminable when defi…
Relationship between mobility and cognitive impairment in patients with Alzheimer's disease.
2019
Alzheimer's disease (AD) is usually accompanied by impairments to mobility, performance of the basic activities of daily life (ADL), and progressive cognitive decline. We analyzed the relationship between cognitive performance and related cognitive subdomains and mobility.All AD patients of the recruited individuals were living in nursing homes; they underwent a blood analysis, cognitive examination by using the Mini-Mental State Examination, functional evaluation of independence in the ADLs with Barthel score and Katz index, and mobility assessment with the elderly mobility scale.The mean sample age was 84 years and majority were women; more than 60% of the participants had severe cognitiv…