The document discusses the principles of training that should be followed to improve athletic performance. It explains that training programs need to be carefully planned and tailored to the individual based on their needs, abilities, and the demands of their sport. It then outlines the SPORTVW mnemonic to remember the key principles of training: specificity, progressive overload, reversibility, training thresholds, variety, and warm-up/cool-down. It provides details on each principle and how to apply them through gradual progression and periodization of the FITT components of training: frequency, intensity, time, and type. The document emphasizes that training must provide continued overload to the body to drive continued improvement in fitness.