8 documents found, page 1 of 1

Profile of gym-goers who do not use performance-enhancement substances

Introduction: Currently the use of prohibited performance-enhancing substances (PES) in fitness and gym settings is a public health concern as adverse health consequences are emerging. Understanding the characteristics of gym-goers who do not use these substances could lead to an important complement to the ongoing research about risk factors for PES use. This study aimed to identify the profile of PES non-use ...

Determinants of the intention to use performance-enhancing substances among por...

The purpose of this study is to examine the determinants of the intentions to use prohibited performance-enhancing substances (PES) and to test the Theory of Planned Behavior's usefulness in predicting self-reported PES use in both genders. A convenience sample of Portuguese gym users (n = 453) completed an anonymous web-based survey. Structural equation modeling, multigroup analysis, and t-test with the Welch ...

Determinants of the intention to use performance-enhancing substances among Por...

The purpose of this study is to examine the determinants of the intentions to use prohibited performance-enhancing substances (PES) and to test the Theory of Planned Behavior's usefulness in predicting self-reported PES use in both genders. A convenience sample of Portuguese gym users (n = 453) completed an anonymous web-based survey. Structural equation modeling, multigroup analysis, and t-test with the Welch ...

REFEREE PERSONAL MEANING: PERCEPTION of FOOTBALL OFFICIALS

Made available in DSpace on 2013-09-27T14:52:56Z (GMT). No. of bitstreams: 1 WOS000292711700003.pdf: 354177 bytes, checksum: 288de3a27b18ad13b14297f279809754 (MD5) Previous issue date: 2011-01-01; Made available in DSpace on 2013-09-30T19:24:25Z (GMT). No. of bitstreams: 1 WOS000292711700003.pdf: 354177 bytes, checksum: 288de3a27b18ad13b14297f279809754 (MD5) Previous issue date: 2011-01-01; Submitted by Vitor S...

Prof. Dr. Dietmar Martin Samulski: Vida e legado

Interpersonal Pattern Dynamics and Adaptive Behavior in Multiagent Neurobiologi...

Ecological dynamics characterizes adaptive behavior as an emergent, self-organizing property of interpersonal interactions in complex social systems. The authors conceptualize and investigate constraints on dynamics of decisions and actions in the multiagent system of team sports. They studied coadaptive interpersonal dynamics in rugby union to model potential control parameter and collective variable relations...

The influence of instructions and body-scaling as constraints on decision-makin...

Team games conceptualized as dynamical systems engender a view of emergent decision-making behaviour under constraints, although specific effects of instructional and body-scaling constraints have yet to be verified empirically. For this purpose, we studied the effects of task and individual constraints on decision-making processes in basketball. Eleven experienced female players performed 350 trials in 1 vs. 1...

Interpersonal dynamics in sport

In previous attempts to identify dynamical systems properties in patterns of play in team sports, only 2-D analysis methods have been used, implying that the plane of motion must be preselected and that movements out of the chosen plane are ignored. In the present study, we examined the usefulness of 3-D methods of analysis for establishing the presence of dynamical systems properties, such as phase transitions...