What's the function of a football player's small black vest?

Friends who often watch football matches should know that sometimes players wear a small black vest during games or training, and some golfers are curious. Why on earth do they wear such clothes? What does the black vest on the player do?

Players need to wear their own jerseys, whether they are playing or training. In fact, players will wear such vests when playing, mainly for two reasons.

This little black vest hides some black technology. This sports vest is equipped with a positioning tracker, an accelerator and a gyroscope. On the one hand, it can record the running distance, jumping, acceleration and other information, detect the player's movement state and running position, and help the coach find the team's tactical problems in time. On the other hand, it can monitor the physical condition of players, measure the cardiopulmonary function and metabolic ability of players in real time, ensure the reasonable distribution of players' physical fitness, and make the substitution of coaches more targeted. It can be said that the introduction of this black vest not only facilitates the coaches in the team to better deploy personnel during the competition, but also reduces the injuries of athletes, which is a model for science and technology to change sports. I share a cold knowledge of football in ten classes every day.

To sum up, we can see that the small vest worn by athletes on the court every day is very particular, which can not only help athletes maintain a good state during the exercise, but also transmit the real-time data of athletes in time, which is not only very important for the whole game, but also very important for the adjustment of athletes' bodies. Coaches and other related staff can observe the real-time status of athletes in time, provide technical support for athletes during the competition, and know at a glance when to let athletes rest and make adjustments. With the development of society, these high-tech products are increasingly applied to sports events.