- Volume: the distance of the rep
- Intensity: output of a personal intensity function with respect to speed, mapped according to critical swim speed and their anaerobic speed/intensity curve
Measuring volume and intensity with total swimming time and session RPE provides the total session training load.
Tracking load over time allows for thresholding via Acute to Chronic Workload Ratio (ACWR).
ACWR = 1 week load / 4 week averaged load
Acute = 1 week sum of training load
Chronic = 4 week training load sum, averaged to weekly value
Research has told us if an athlete maintains an ACWR between 80% and 150%, they will keep their likelihood of injury below 5%