Zoekresultaten

Examining the effect of task constraints on the emergence of creative action in young elite football players by using a method combining expert judgement and frequency count

In adult football, small-sided games are associated with increased action variability and suggested to promote more creative actions compared to regular 11v11 formats. This aligns with predictions from an ecological approach to perception and action that creative actions emerge in environments that grant variability in action, instead of being an expression of the individual player's ability to generate ideas. To further evidence for this prediction, the current study aimed to expand this observation to elite youth football players. To this end, the number of different and creative actions in 4v4 small-sided game and a 11v11 regular-sided game among 10- to 12-year-old elite football players were examined. We analyzed a total of 7922 actions, which were categorized for type and creativity. Based on a subset of these actions, a panel of elite football coaches judged action types occurring below 0.5% as significantly more creative than more frequent action types. Hence, we used an occurrence of 0.5% as threshold to distinguish creative actions from non-creative actions. The results showed that the total number of actions, the number of different action types, the number creative actions and the number of different creative action types was significantly higher for the small-sided game format than the regular-sided game. In conclusion, this study confirms that in elite youth football, small-sided games induce a more variable and creative action repertoire. This shows that practitioners can design learning environments that promote the emergence of creative actions.

Size matters: Pitch dimensions constrain interactive team behaviour in soccer

Pitch size varies in official soccer matches and differently sized pitches are adopted for tactical purposes in small-sided training games. Since interactive team behaviour emerges under constraints, the authors evaluate the effect of pitch size (task) manipulations on interactive team behaviour in small-sided soccer games. Four 4-a-side (plus goalkeepers) small-sided games were played: a reference game (30×20 m), length manipulation (24×20 m), width manipulation (30×16 m), and a combination (24×16 m). Using position data (100Hz), three measures quantifying the teams' interaction were calculated: longitudinal inter-team distance, lateral inter-team distance, and surface area difference. Means and standard deviations, correlations and coupling values were calculated. Running correlations were calculated over a 3-s window to evaluate interaction patterns. As expected, a shorter pitch results in smaller longitudinal inter-team distance, lateral inter-team distance decreased for narrow pitches, and smaller total playing area resulted in decreased surface area. Unanticipated, a crossover effect was present; length and width manipulations also triggered changes in lateral and longitudinal direction respectively. Inter-team distances and surface area difference differed significantly across conditions. Interaction patterns differed across conditions for all measures. So, highly tactically relevant, soccer teams seem to adapt their interactive behaviour according to pitch size in small-sided games. © 2013 Institute of Systems Science, Academy of Mathematics and Systems Science, CAS and Springer-Verlag Berlin Heidelberg.

Spel tussen amusement en kunst

Games zijn bedoeld voor vermaak, maar we kunnen ze ook opvatten als een vorm van cultuur. Ze vertellen iets over de samenleving waarin ze zijn gemaakt: al dan niet met opzet komen er via de verbeelding van de makers opvattingen over de samenleving in games terecht. Games zetten op hun beurt aan tot verbeelding, waardoor gamers zich mogelijk gestimuleerd voelen na te denken over die samenleving. Toch is het aannemelijk dat gamers daar weinig voor voelen, omdat dit een plezierige ervaring in de weg kan staan. Maar gamers blijken wel degelijk geneigd tot reflectie op de wereld om ons heen, over het leven, over goed en kwaad. Ruim driekwart van de gamers uit dit onderzoek zegt dat wel eens te doen. Tegen de verwachting is daarbij geen verschil te zien tussen reguliere gamers en professionals, zoals reviewers en game designers. Verondersteld werd dat die laatstgenoemden zich beroepsmatig vaker aangezet voelen tot reflectie op de wereld om ons heen. Vaker dan verwacht blijken gamers een kunstervaring te ondergaan bij het spelen van games. In de context van deze studie wil dat zeggen dat die spelers ‘tussen de regels door’ commentaar op de spel- en verhaalgebeurtenissen hebben opgemerkt, dat hen aan het denken zette over de wereld. Daarbij was geen verschil te zien tussen mainstream games en indiegames. De verwachting dat de meeste gamers vooral de bijzondere vormgeving van games noemen als reden om ze als kunst te bestempelen is ten slotte wel bevestigd. Dit laat meteen ook het verschil zien tussen de gangbare esthetische kunstopvatting en wat ik in deze studie onder kunst versta: het ervaren van een betekenisproces dat stimuleert tot reflectie op het leven.

Validity and reliability of 6-a-side small-sided game locomotor performance in assessing physical fitness in football players

In order to determine whether small-sided game (SSG) locomotor performance can serve as a fitness indicator, we (1) compared 6-a-side (6v6) SSG-intensity of players varying in fitness and skill, (2) examined the relationship of the 6v6-SSG and Yo-Yo IR2 and (3) assessed the reliability of the 6v6-SSG. Thirty-three professional senior, 30 professional youth, 62 amateur and 16 professional woman football players performed 4 × 7 min 6v6-SSGs recorded by a Local Position Measurement system. A substantial subgroup (N = 113) also performed the Yo-Yo IR2. Forty-seven amateur players performed two or three 6v6-SSGs. No differences in 6v6-SSG time-motion variables were found between professional senior and professional youth players. Amateurs showed lower values than professional seniors on almost all time-motion variables (ES = 0.59-1.19). Women displayed lower high-intensity time-motion variables than all other subgroups. Total distance run during 6v6-SSG was only moderately related to Yo-Yo IR2 distance (r = 0.45), but estimated metabolic power, high speed (>14.4 km · h(-1)), high acceleration (>2 m · s(-2)), high power (>20 W · kg(-1)) and very high (35 W · kg(-1)) power showed higher correlations (r = 0.59-0.70) with Yo-Yo IR2 distance. Intraclass correlation coefficient values were higher for total distance (0.84) than other time-motion variables (0.74‒0.78). Although total distance and metabolic power during 6v6-SSG showed good reproducibility (coefficient of variation (CV) < 5%), CV was higher (8-14%) for all high-intensity time-motion variables. It was therefore concluded that standardised SSG locomotor performance cannot serve used as a valid and reliable fitness indicator for individual players.

Ethical stewardship

In this chapter, we propose an ethical framework for serious game design, which we term the Ecosystem for Designing Games Ethically (EDGE).EDGE expands on Zagal’s categorization of ethical areas in game design by incorporating the different contexts of design and their use. In addition, we leverage these contexts to suggest four guidelines that support Ethical Stewardship in serious game design. We conclude by discussing a number of specific areas inwhich ethics plays a role in serious game design. These include games in (a) amilitary context, (b) the consideration of privacy issues, and (c) the evaluation ofgame design choices.

The effect of manipulating task constraints and player numbers in small-sided games in field hockey