“To perform a 1200m Shuttle Test, the participants start at a baseline and run 20 meters forwards then returned to the baseline, they then ran 40 meters forwards and returned to the baseline again and finally run 60 meters forwards and return to the baseline. They repeat this sequence five times as fast as possible, covering a total of 1200 meters. Ensure the foot touches or goes over each line. The participants should be instructed to run maximally throughout the test to achieve the best result.” What component is being tested?