Individual needs
personal fitness needs based on age, gender, fitness level and the sport for which they are training for.
Specificity
The particular requirements of an activity.
Progressive overload
Gradually increasing the amount of work to improve fitness
Overtraining
Training beyond your body’s ability to recover.
Reversibility
Gradually losing fitness instead of progressing or remaining at the current level.
FITT
Training principle based on frequency, intensity, time and type.