Introduction
In this report, the author has decided to analyse the sport of Football, specifically the position of Goalkeeper, in order to gain a better understanding of the Fitness Components used and also to determine the Energy Systems that are used throughout participation. In the sport of Football, the game itself last 90 minutes, split into two equal halves of 45 minutes, with a 15 minute break in between. In Football, the sizes of each individual pitch varies depending on styles of football played by each team (if a team likes to play possession football and use width then pitch could be long and wide, where as if a team plays with a more direct approach then the pitch could be shorter and more narrow), however, these are the dimensions required by law: The length of a pitch must be between 100 yards (90m) and 130 yards (120m) and the width not less than 50 yards (45m) and not more than 100 yards (90m). With football being a fast, free- flowing game, there are very few breaks in play throughout the game other than for set pieces or throw ins.

Analysing from Player’s Perspective
Being a goalkeeper is one of the major positions on the football pitch, if not THE most important, as it is the most specialized position in the sport. The goalkeeper's primary role is to prevent the opposing team from successfully moving the ball over the goal-line (between the posts and under the crossbar). This is accomplished by the goalkeeper moving into the path of the ball and either catching it or directing it away from the vicinity of the goal line. Within the penalty area goalkeepers are able to use their hands, making them (outside of throw-ins) the only players on the field able to handle the ball. Goalkeepers perform goal kicks, and also give commands to their defense during corner kicks, direct and indirect free kicks, and marking. Goalkeepers play an important role in directing on field strategy as they have an unrestricted view of the entire pitch, giving them a unique perspective on play development. But perhaps the most demanding part of being a goalkeeper is the constant battering your body takes in the form of blocked shots, player collisions, throwing your body up and down on a regular basis, basically in goals you can cover every aspect of movement patterns available: walking, jogging, sprinting, jumping, twisting, lunging, diving, throwing backwards, throwing forwards, kicking, throwing, and catching.