Changes

Using a rating of perceived exertion has the advantage of needing no technology. At the end of the training session (ideally within 30 min. of finishing) the athlete rates the intensity of the session using the [[Rating of Perceived Exertion|Borg CR10 RPE scale]]. This scale goes from 0 to 10+, and multiplying this session RPE value by the session time in minutes gives a value for the training load of that session. So if an athlete runs for two hours and rates this as an RPE of six, the TRIMP^cr10would be 120 x 6 = 720. The units for this session load are not absolute, nor of a really comparable between athletes. The subjective nature of the RPE scale can introduce some repeatability problems. Also, the last part of the workout tends to disproportionately influence how the athlete perceives the overall exertion. However, while this method lacks the precision of a heart rate based training load, it does include some aspect of the athletes who moodstate, which may be useful in determining overtraining[[Overtraining Syndrome]]. In addition, the perceived exertion may work better for workouts such as weight training, or plyometrics, where heart rate alone does not truly capture the training load.