During the last 20 years, there has been a marked increase in the number of publications investigating the use of tracking systems on measuring player’s physical performance and match/training load. The background for this has been two-fold: (1) to examine the physical performance of player’s during matches, (2) and to optimize match- and training load, in order to increase fitness and freshness, and prevent overuse injuries.
The benefits of warming up prior to physical activity is well-established. The purpose of warming up is to prepare the body for the upcoming activity, in order to optimize performance. From a physiological standpoint, a warm up is an important factor in “waking up” the body. Several physiological mechanisms take place, where some of the most important are increased breathing volume and rate, increased stroke volume and dilation of blood vessels, in order to transport more oxygen to meet the metabolic demand of the working muscles. All these processes are improved by increased body temperature from a gradual warm-up. The general warm-up routine in football consists of 20-30 minutes of low- to high-intensity exercises. This physical preparation elevates muscle and body temperature, an important factor for physical performance. Studies from football has shown a relationship between increased muscle temperature and enhanced sprint performance (1), which highlights the importance of warm-up for maximal efforts at the start of match. It has been shown in football that distance covered in high-intensity running (> 14.4km×h-1) is reduced during the first 15min period of the 2nd half compared to the first 15min period of the 1st half (2). This might seem odd as one could Continue Reading