scholarly journals Self-Efficacy, Flow, Affect, Worry and Performance in Elite World Cup Ski Jumping

2018 ◽  
Vol 9 ◽  
Author(s):  
Vegard H. Sklett ◽  
Håvard W. Lorås ◽  
Hermundur Sigmundsson
Keyword(s):  
Self Efficacy ◽  
World Cup ◽  
Ski Jumping ◽  
And Performance

scholarly journals Kinematic Determination of the Aerial Phase in Ski Jumping

Sensors ◽  
2022 ◽  
Vol 22 (2) ◽  
pp. 540
Author(s):  
Ola Elfmark ◽  
Gertjan Ettema ◽  
Petter Jølstad ◽  
Matthias Gilgien
Keyword(s):  
Satellite System ◽  
Performance Level ◽  
Rate Of Change ◽  
World Cup ◽  
Physical Point ◽  
Ski Jumping ◽  
And Performance ◽  
Global Navigation Satellite ◽  
Drag Ratio

The purpose of this study was to find a generic method to determine the aerial phase of ski jumping in which the athlete is in a steady gliding condition, commonly known as the ‘stable flight’ phase. The aerial phase of ski jumping was investigated from a physical point mass, rather than an athlete–action-centered perspective. An extensive data collection using a differential Global Navigation Satellite System (dGNSS) was carried out in four different hill sizes. A total of 93 jumps performed by 19 athletes of performance level, ranging from junior to World Cup, were measured. Based on our analysis, we propose a generic algorithm that identifies the stable flight based on steady glide aerodynamic conditions, independent of hill size and the performance level of the athletes. The steady gliding is defined as the condition in which the rate-of-change in the lift-to-drag-ratio (LD-ratio) varies within a narrow band-width described by a threshold τ. For this study using dGNSS, τ amounted to 0.01s−1, regardless of hill size and performance level. While the absolute value of τ may vary when measuring with other sensors, we argue that the methodology and algorithm proposed to find the start and end of a steady glide (stable flight) could be used in future studies as a generic definition and help clarify the communication of results and enable more precise comparisons between studies.

Improving creative self-efficacy and performance through computer-aided design application

2019 ◽  
Vol 31 ◽  
pp. 103-111 ◽  
Author(s):  
Yu-shan Chang ◽  
Mavis Yi-Ching Chen ◽  
Meng-Jung Chuang ◽  
Chia-hui Chou
Keyword(s):  
Self Efficacy ◽  
Computer Aided Design ◽  
Computer Aided ◽  
And Performance ◽  
Creative Self ◽  
Aided Design

Effects of In Vivo Emotive Imagery and Performance Feedback on Self-Efficacy and Muscular Endurance

1990 ◽  
Vol 12 (2) ◽  
pp. 132-143 ◽  
Author(s):  
Deborah L. Feltz ◽  
Camala A. Riessinger
Keyword(s):  
Performance Feedback ◽  
Self Efficacy ◽  
Efficacy Beliefs ◽  
Muscular Endurance ◽  
College Males ◽  
Control Subjects ◽  
Imagery Group ◽  
And Performance ◽  
Performance Times

An experiment was conducted to investigate the relative merits of in vivo emotive imagery and performance feedback in enhancing self-efficacy beliefs and performance on a competitive muscular endurance task. College males (n=60) and females (n=60) were randomly assigned to one of three conditions: mastery imagery plus feedback, feedback alone, or control condition. Subjects in the imagery-plus-feedback condition were told that one of the pair (always the subject) would receive imagery exposure while the other (always the confederate) would wait outside. Subjects performed two trials against the confederate, who always won by 10 seconds. A Group x Trials interaction for self-efficacy revealed a significant increase for the imagery group after brief exposure. Also, imagery subjects had significantly higher efficacy scores than feedback alone or control subjects after each performance trial. A Group x Trials interaction for performance indicated that imagery subjects initially had significantly longer performance times than did feedback alone or control subjects. Performance feedback alone did not influence efficacy beliefs or performance.

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