2. Modification of nutritional intake

2.1 Nutrition and physical activity

To evaluate physical activity, three elements are involved:

• its weekly frequency ;

• its duration ;

• its intensity, i.e. the power required to perform it.

An amateur is no longer an athlete who practices a sport of average intensity more than 3 times a week for more than 1 hour per session.

Whether you're a top-level athlete or a hard worker, physical effort represents an energy cost for the body. In general, energy balance is achieved spontaneously, except in the case of women involved in sports requiring low body weight or fat mass (dancers, skaters, gymnasts, etc.), or for athletes...