چکیده:
Background. Despite the increasing popularity of the snowboard, there is not scientific literature for sport performance indicators in this sport.
Objectives. To analyze the effects of jump difficulty on the final performance during snowboarding-slopestyle competition.
Methods. All competition sequences (n=214) from the 2014 Winter Olympic Games were analyzed. Of these, 123 were from the men´s competition and 91 were from the women´s competition. The interaction between the final score and number of rotations was calculated using regression models with quadratic or linear equations. All analyses were performed separately for women and men.
Results. Quadratic regression had better R2 and mean absolute errors than linear regression. Linear and quadratic regressions showed that the number of rotations significantly predicts final score in men. However, in the women´s competition, the curve of quadratic regression was almost identical to that from the linear regression.
Conclusion. These results have identified the importance of evaluating the jump difficulty versus its efficacy. Athletes and coaches have to weigh pros and cons of increasing the difficulty of jumps or improve jumps that are already fluent in order to master them.
خلاصه ماشینی:
Effects of Jump Difficulty on the Final Performance inSnowboard-Slopestyle-Winter Olympic Games, Socchi 20141,2Jesús Muñoz, 2Javier García-Rubio, 1David Ramos, 1Kiko León, 1Daniel Collado-Mateo*1Faculty of Sports Science, University of Extremadura, Cáceres, Spain.
To analyze the effects of jump difficulty on the final performance duringsnowboarding-slopestyle competition.
The interaction between the final score and number of rotations was calculated using regression models with quadraticor linear equations.
Linear and quadratic regressions showed that the number ofrotations significantly predicts final score in men.
KEY WORDS: Sport, Decisional Balance, Correlates, Elite, Jumps, Snowboard, Slopestyle.
The principal topic inSnowboard research is "Sport injuries", whichcontains data about all snowboard modalities,including Slopestyle (2, 3).
Therefore, the aim of this paper is,making a first approach in this sporting contextacross the field of sport performance analysis, toanalyze the effects of jump difficult on the finalperformance during official competition.
Additionally, a bivariate correlationwas performed to analyse the relation between thetotal number of rotations and the final score.
A linear regression with one independentvariable (number of rotations) and one dependentvariable (final score) was performed.
Results shows positive correlation betweenall jumps and final score for men (p< .
Results show that thenumber of rotations in jumps one, two andthree are associated with final score for men,but only the third jump for women.
Quadratic and linear regressions of men and women competitionsResearch in snowboard-slopestyle is scarce,and only one study that was related to performanceindicators (13) was available.
Men perform more rotations in alljumps, and, though the last jump is the mostimportant, the first and second have an impact inthe final results.