Objetive:To determine the effects of a functional ankle instability prevention neuromuscular training (PENMT) program compared to the conventional FIFA 11+ program on the occurrence of ankle sprains, flexibility, balance and muscle activation in 17-year-old male youth soccer players to 20 years.

Subjects and Methods: An experimental investigation, controlled, randomized and single-blind clinical trial was carried out in 40 subjects randomized to start the control or experimental group (soccer Players). The trial compared the effects of a differential intervention with a protocol focused on an ankle neuromuscular training program vs the usual FIFA 11+ program, in order to strengthen functional ankle stability in youth soccer in male players. In each subject, 2 measurements were taken: Pre-intervention and Post-intervention. For each measurement, a hypothesis test was performed.

Results: The FIFA11+ is expressed as an injury risk factor when buying it with the PENMT after their participation.

Conclusion:The neuromuscular training program for the ankle or PENMT applied in the experimental group did not generate a negative effect with respect to the FIFA 11+ program, in addition to the time of departure in the post test, the PENMT program is expressed as a protection factor of player injuries when contrasted with the FIFA 11+ program, that is, it presents effectiveness against the risk factor of functional ankle instability.

Inclusion Criteria:

• Be between the age range of 17 to 20 years old at the time of evaluation and intervention.
• Have a minimum of 2 years of semi-professional / professional sports practice.
• Be linked to the football club for at least 1 year.
• That they practice soccer at least 5 times a week.
• That they are playing at least one competitive tournament.
• That they have an active or current health promotion entity - EPS and / or occupational risk insurer-ARL.
• Players who during the entire period of 2019-2020 have presented at least one episode of lateral ankle sprain (during the last 4 months) (in the time range of 3 to 12 months prior to the first evaluation) who have required immobilization and / or weight loss for at least 3 days; present pain, subjective perception questionnaires of ankle instability).
• Soccer players with or without sprained ankle injuries will be taken, but not in the last 3 months. However, the time elapsed since the last episode will be recorded.

Exclusion Criteria:

• Belonging to another sports club and / or regularly practicing more than one sport with muscular demand of the lower tract (lower limbs).
• Who present acute injuries such as: vestibular alterations, history of ankle fracture, acute knee and / or ankle injury during the last 3 months, history of previous surgical interventions in lower limbs or underlying systemic disease at the time of the initial evaluation (pretest).
• Who are undergoing treatment for any neuromuscular or other related pathology, in the acute phase and / or who have received a neuromuscular training program in the last 4 months, different from the one that will be applied in this study.
• That in the last 4 months they have been in treatment for any neuromuscular pathology or other related to the acute phase and / or receive a neuromuscular training program different from the one that will be applied in this study.

Male