Increase in muscle strength contributes to the overall results improvement in most sports disciplines and competitions, and is of great importance in preparing the locomotor system for specialist exercise and in preventing injuries. The force generated by muscles may be either static – associated with increased muscle tension (e.g. in arm wrestling), or dynamic – when changes in muscle length occur (chin-ups or bodybuilding exercises). There is also the notion of explosive power, which means the ability to use dynamic force within a very short time, for example: run starts, driving blows in combat sports, etc.
The strength-building workouts are characterised by high intensity, in result of which the energy for muscle work is acquired through anaerobic conversions. Every sportsperson, within the period of working on the development of muscle strength should aim to achieve high levels of phosphocreatine and glycogen in the muscles – the compounds that are the main energy fuel during short and intensive physical training.

To this end, of particular importance is proper nutritional strategy the main tasks of which should be: