FC Reserva (FCR)
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
FCR
About this calculator
The Frequency Cardiac Reserve (FCR) Calculator is a useful tool for athletes and trainers who want to optimize their fitness training. Based on the formula FCR = FCmax − FCrep, this calculator helps to determine the optimal heart rate for high-intensity exercise.
The Heart Rate Reserve is an important measure to avoid injuries and ensure maximum performance during training. By using this calculator, you can adjust the intensity of your exercises to avoid excessive effort and reduce the risk of muscle injuries.
In addition, the Heart Rate Reserve is also useful for monitoring progress and recovery after a training session. By knowing the ideal heart rate for high-intensity exercise, you can adjust the duration and intensity of your training sessions to achieve better results.
Remember that the Heart Rate Reserve is only a tool and should not be used as a substitute for the guidance of a healthcare professional or a trainer. Additionally, it is important to take care of yourself when performing high-intensity exercises and avoid excessive effort.
Frequently asked questions
What is the Heart Rate Reserve?
The Heart Rate Reserve (FCR) is the difference between the maximum heart rate (FCmax) and the resting heart rate (FCrep).
When should I use this calculator?
This calculator is useful for athletes and trainers who want to know the optimal heart rate for high-intensity exercise. It is also useful for monitoring progress and recovery after a training session.
What is the formula used by the calculator?
The formula used by the calculator is FCR = FCmax − FCrep.
Can I use this calculator without being a healthcare professional or a trainer?
Yes, it is possible to use this calculator without being a healthcare professional or a trainer, but it is important to remember that the calculator is only a tool and should not be used as a substitute for the guidance of a healthcare professional or a trainer.