Trainers use mechanical analysis in training for a number of reasons, including:

• To discover movement details: Mechanical analysis can help trainers to identify the specific movements that are involved in a particular sport or activity. This information can then be used to improve the efficiency and effectiveness of the movements, which can lead to improved performance.
• To evaluate performance: Mechanical analysis can be used to evaluate the performance of athletes in terms of their movement efficiency, power output, and range of motion. This information can then be used to identify areas where athletes can improve their performance.
• To know how to employ mechanical foundations in achieving the best performance: Mechanical analysis can help trainers to understand the mechanical principles that underlie athletic performance. This knowledge can then be used to design training programs that are specifically tailored to the individual athlete's needs.
• To prevent injuries: Mechanical analysis can help trainers to identify potential injury risks in athletes' movements. This information can then be used to modify the athlete's movements or to provide them with additional support.

In addition to these reasons, trainers may also use mechanical analysis to:

• Identify potential areas of weakness in an athlete's movement patterns: This information can then be used to design specific exercises to improve the athlete's strength and flexibility.
• Monitor an athlete's progress over time: This information can be used to make adjustments to the training program as needed.
• Assess the effectiveness of a training program: This information can be used to determine whether the program is achieving its desired results.

Overall, mechanical analysis is a valuable tool for trainers who want to improve the performance and safety of their athletes.