TSS (Training Stress Score)

The TSS (Training Stress Score) calculator is a tool used by cyclists to measure the physical stress caused by a workout. It takes into account the duration of the workout (h), normalized power (NP), intensity factor (IF), and functional threshold power (FTP) of the cyclist. The formula to calculate TSS is: TSS = (h × NP × IF) / FTP × 100. This allows athletes to monitor and plan their workouts more effectively.

TSS is a measure that helps understand the impact of a workout on the athlete's body. Normalized power (NP) is a weighted average of the power generated during the workout, intensity factor (IF) is a measure of the workout intensity relative to the athlete's FTP, and functional threshold power (FTP) is the maximum power the athlete can maintain for a prolonged period. With this information, the TSS calculator provides a score that reflects the stress caused by the workout.

When to use the TSS calculator? Whenever you need to evaluate the impact of a cycling workout. For example, if you're planning a competition and need to know if you're ready for the required effort, or if you're starting a new workout and need to monitor your progress. Additionally, it's essential to be careful with the accuracy of the input data, as it directly affects the accuracy of the result.

It's essential to remember that TSS is just one of the tools cyclists use to monitor their workouts. Other factors, such as recovery and nutrition, also play a crucial role in the athlete's performance. Therefore, it's fundamental to consider TSS in conjunction with other metrics to get a complete view of your performance and progress.