Effects of short bout small-sided game training on acid-base balance markers in youth male soccer players

• Published in: Scientific reports 2023-03, Vol.13 (1), p.3510-10, Article 3510
• Main Authors: Kryściak, Jakub, Podgórski, Tomasz, Chmura, Paweł, Konefał, Marek, Chmura, Jan, Brazaitis, Marius, Modric, Toni, Andrzejewski, Marcin
• Format: Article
• Language: English
• Subjects: 631/443; 631/45; Acids; Athletes; Bicarbonates; Exercise; Global positioning systems; GPS; Heart rate; Homeostasis; Humanities and Social Sciences; Lactic acid; Metabolism; multidisciplinary; Physical education; Physical fitness; Physical training; Science; Science (multidisciplinary); Soccer; Training
• ISSN: 2045-2322; 2045-2322
• DOI: 10.1038/s41598-023-30646-4

This study aimed to compare the effects of 1 × 1 small-sided games (SSGs) with different bout durations on external (ETL) and internal training loads (ITL) in youth soccer players. Twenty U18 players were divided into two groups performing six 1 × 1 SSGs with 30 and 45 s bout durations on a playing field of 10 by 15 m. ITL indices, including the percentage of maximum heart rate (HR), blood lactate (BLa) level, pH, bicarbonate (HCO 3 − ) level, and base excess (BE) level, were measured at rest, after each SSG bout, and 15 and 30 min after the entire exercise protocol. ETL (Global Positioning System metrics) was recorded during all six SSG bouts. The analysis showed that the 45 s SSGs had a greater volume (large effect) but a lower training intensity (small to large effect) than the 30 s SSGs. A significant time effect ( p