An international conference was held in 2016, where athletic experts and researchers discussed their findings related to training load. A collective review discussed the pros and cons of key findings shared at the conference. Here, as well as in Part 1, we will review tools and measures commonly used to monitor athlete training loads. Fitness-Fatigue Model The fitness-fatigue model is used to analyze training load information (2). This method is used to advise training plans (8) and predict performance, fitness and fatigue levels (29, 30, 34, 37). The initial fitness-fatigue model suggests training loads give rise to fitness responses which [...]