Biological age is an important metric to determine a player's athletic level and ability in this case. Strength training should consider physical development to strengthen components of physical strength, aerobic and anaerobic endurance, power, speed, and flexibility to create a better soccer player.

Training for high peak velocity alone would only cover one aspect of athletic development and performance.

A well-designed, adequately periodized, safe program can benefit any athlete during puberty, regardless of biological age. By adjusting frequency, intensity, time, and type of training, it is possible to determine a proper training model for each athlete.

Regarding determining biological age through DEXA, it would probably be opportune to consider skeletal age. Leyhr et al. (2020) present a good case.

Leyhr, D., Murr, D., Basten, L., Eichler, K., Hauser, T., Lüdin, D., ... & Höner, O. (2020). Biological maturity status in elite youth soccer players: a comparison of pragmatic diagnostics with magnetic resonance imaging. Frontiers in Sports and Active Living, 2, 587861.

Chicago.

Yes, it is essential and must be evaluated even at a match or training session. It will help in adjusting the appropriate kind of strength and resistance training that not only support their performance but also has an impact on their body age.

Age is significant factor in school sports planning regarding time intervals of sensitive periods for optimal growth development and reaching the maximal level of biopsychophysical potential. Different training intensity and volume for different age groups ..