# Sport Performance Analysis with a Focus on Racket Sports: A Review
## 3 Results
### SR1: An Overview of Sport Performance Analysis in General
#### 3.1.2 Tools Used for Data Collection/Automation Analysis  
The method used to collect data varies from sport to sport. Because of the public and scientific interest, articles about football use the most advanced tools and data collection techniques. Funding is also an important consideration in the development of tools. Three viable approaches have been identified in the articles. Video/image tracking/recording, geographical positioning system (GPS) tracking, or wearable device tracking are all used to collect data. To accomplish this, only a few systems combine video tracking with wearable sensors. Table 2 contains a list of possible approaches organized by sport. GPS are the most widely used data collection technique in sports. The Video Tracking Camera System (VTCS) is a technology that captures two-dimensional position data (\(x\) and \(y\)) at high sampling rates (over 25 Hz). VTCS can collect technical and tactical parameters as well as external load variables. [PERSON] et al. [60] demonstrated a system that uses a single Microsoft Kinect 2 camera to automatically evaluate a gymnast's performance on the pommel horse apparatus, specifically the consistency of the gymnast's timing and body angle. The depth at each pixel determined by the camera provides information not available to traditional sports analysis approaches based solely on RGB data. Amisco Pro, as described by [PERSON] et al. [61], is a multicamera match performance analysis system. During the game, the movements of all 20 players (excluding goalkeepers) are recorded. Amisco Pro tracks players' distance traveled, time spent in five different intensity categories, and time spent in various positions. DigitalStadium (R) is a performance analysis device defined by [PERSON] et al. [62] as a video tracking multiple system with a semi-automatic performance analyst process. [PERSON] et al. [63] captured the data with two video cameras and analyzed it with the SAGIT tracking system. The SAGIT algorithm is based on a movement/position analysis. The system recognized the posture from an RGB image, performed an overall evaluation, and returned the information in real time. [PERSON] and [PERSON] [64] proposed system for reconstructing the 3D trajectories of table tennis balls using RGB camera data. The introduced method could be used for a match analysis because it has already been demonstrated to provide accurate information for service analysis. Wearable devices provide an excellent opportunity not only to measure the player's motion and position, but also to track the player's physical stage in real time. Garmin (TM) Heart Rate Band and Wimu (TM) inertial devices were used for data collection and real-time monitoring of physical activity and movement during citereina2019 training. Heart rate, player load, step counts, and jumps are all outputs from these devices. Wimu (TM) was used by [PERSON] et al. [65] to collect external load and positional data for basketball performance analysis. The kinematic coupling algorithm of inertial motion capture systems (IMSs) used by [PERSON] and [PERSON] [66] can measure human kinematics both outdoors and in a laboratory. Magnetic interference is a concern for the system. [PERSON] et al. [67] used a real-time locating system (RTLS) to track cross-country skiers during a competition. Three RTLS tags have been attached to the antenna of a real-time kinematics global navigation satellite system (RTK GNSS) carried by a skier who skied the course three times at three different intensities. [PERSON] et al. [58] conducted research using the VERT (TM) (Mayfonk Athletic Company) wearable sensing device to measure height jump in volleyball. Bluetooth transmits real-time data to a smartphone or tablet. Last jump, best jump, jump average, and jump amounts can all be recorded. Both the Babolat Play and the Sony Smart Tennis Sensor mentioned by [PERSON] et al. [57] have been used as wearable devices to track various types of tennis shots and provide a performance