The principle of progression is a training philosophy used to design a personal training programme intended to enhance physical fitness, skill, and performance. The idea suggests that in order for athletes to enhance their fitness levels, they must continuously increase physical challenges until they reach the optimal level of overload.
If the demand is increased too slowly, progress is unlikely, and if it is increased too quickly, muscular damage or injury could happen. Other essential training principles include:
Specificity – training must correspond to a particular sport
By training more intensely, fitness is improved.
Reversibility — when training ceases, all adaptations are eventually reversed.