GPS TRACKING ANALYSIS, HEART RATE MONITORING AND TECHNICAL CAPABILITY IN COMPETITION SIMULATION U12 SOCCER

• Main Author: Bayu Putro, Andika
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/82495
• Institution: Institut Teknologi Bandung

Background: Analysis of technical abilities in professional soccer has increased significantly, but this is in stark contrast when compared to grassroots level. The aim of this research is to analyze the physical demands of both internal and external loads as well as the technical abilities of players during a full day match simulation. Method: A cohort observational study involving 84 players (U12) from 6 Football Academies and School Teams (SSB) in West Java were selected using a purposive method with characteristics (11.65 ± 0.49 years, 141.26 ± 8.00 cm, 34.50 ± 8.26 kg, 17.14 ± 2.89 kg/???? 2 ) paired Polar and Catapult to monitor internal and external loads during competition. The entire match was recorded using an iPhone 11 to see the players' technical abilities. A week before, all players were measured including anthropometry, body composition, vertical jump, 30m sprint time and aerobic capacity. Results: There was an overall significant decrease in the mean heart rate variable and an increase in the RPE scale. Then the player's external load also decreased, especially in the total distance traveled and total sprint distance (p < 0.05). Midfielders always record the highest results in the variables total distance traveled (3036 ± 331 m), total sprint distance (654 ± 250 m), and maximum speed during the match (21.94 ± 1.81 km/h). Significant differences were also seen in the players' technical abilities based on their achievements, especially total passes and dribbling (p < 0.05). Monitoring player fatigue showed significant differences in vertical jump results (40.81 ± 3.96 vs 38.68 ± 5.01 cm) and 30m sprint times (5.12 ± 0.34 vs 5.41 ± 0.42 seconds) between baseline and the last match. Conclusion: Grassroots football players who participate in consecutive full-day matches are at risk of experiencing fatigue. The midfielder position always consistently has the highest physical demand compared to the others. Meanwhile, technical ability is the most important factor in coaching grassroots soccer.