Fatigue and the regulation of exercise intensity during team sport matches

Publication Type:
Chapter
Citation:
Regulation of Fatigue in Exercise, 2011, pp. 117 - 136
Issue Date:
2011-12-01
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Despite the engaging discussion concerning the mechanisms of fatigue during exercise, one common theme seems apparent; that the underlying mechanisms are intensity and duration dependent. As expected, the debate regarding the definition, presence and mechanisms of exercise-induced fatigue centres heavily on findings of laboratory investigations. However, presently there is little evidence from ecologically valid, field-based settings to support this laboratory evidence. From the view of the Exercise and Sports Sciences, a central tenant of the research into the mechanisms of fatigue is to transfer the findings back to an applied setting to understand exercise performance in the field. Accordingly, many laboratory studies have investigated mechanisms responsible for the amelioration or termination of exercise performance. However, particularly for team sports, the poor ecological validity of exercise protocols used restricts application of the findings to the field. Further, termination of exercise in the field is normally associated with the end of a game, rather than volitional exhaustion, reducing the application of laboratory findings to competition settings. Recently, the use of player tracking technology has increased the ease and resolution of collecting game-based data to understand movement patterns of team sport athletes. As such, from the growing body of literature it is possible to gain insight into the regulation of game-based exercise intensity and hence postulate as to the mechanisms responsible for the fluctuations in exercise patterns. Added to these findings are further game-based data of physiological responses and the effects of changing conditions on the resulting exercise patterns. Accordingly, from a collection of game-based data for a range of team sports, it is possible to develop a more ecologically valid description of the influence of transient and absolute fatigue, or more aptly, the regulation of exercise intensity. This chapter will discuss game-based data on the motion characteristics of players, along with a range of physiological data collected from "real-world" settings. To supplement this, using hot environmental conditions as an example, further analysis of how changing environments affect the regulation of exercise patterns will also be addressed. Finally, from these respective collections of data, the role and influence of potential mechanisms highlighted by laboratory evidence will be discussed. As such, this chapter will examine the patterns of exercise regulation and postulate on the possible underlying mechanisms responsible for fatigue during team sport exercise. © 2011 by Nova Science Publishers, Inc. All rights reserved.
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