Soccer imposes a series of physical and technical demands on its practitioners, especially of the lower limbs (MMII), such as jumping, kicking, attacking, turning, running, changing the rhythm and sustaining. An overloaded musculature can result in imbalances between the agonist and antagonist muscles, resulting in possible postural changes and impairment of the athlete's performance.

Thinking about the challenges that the practice of soccer entails on the lower limbs, the present study aimed to analyze the correlation between baropodometry and the maximum repetition test of the knee and hip of junior field soccer athletes.

A cross-sectional observational clinical study was carried out with 33 amateur soccer athletes between 13 and 15 years old, in which the values of maximum repetitions (RM) and baropodometry were collected.

In the maximal repetition analysis, the statistics revealed, during the driving with eyes closed, a moderate negative correlation between the maximum repetition of internal rotation of the right hip and the center of medial-lateral pressure, as well as between the maximal repetition of internal rotation of the left hip and the center of medial-lateral pressure. A weak negative correlation was also observed between the maximal repetition of left knee flexion and the anteroposterior center of pressure, as well as a moderate negative correlation between the maximal repetition of left external rotation of the hip and the maximal pressure exerted on the left foot during closed eyes. These correlations indicate that postural control and plantar pressure distribution in athletes are influenced by different factors such as muscle group, sports gestures, dominant and supportive limb, as well as the player's position on the field.

This study demonstrated moderate correlations between the muscle strength of knee flexors and internal and external hip rotators with the balance and distribution of plantar pressure oscillation in junior soccer players.

These results can help in the development of appropriate training protocols that can favor muscle strengthening and muscle rebalancing in soccer athletes, since this balance between agonist and antagonist is important, and can also favor physical and functional performance, reducing the risk of injuries.