Effects of sprint distance and repetition number on energy system contributions in soccer players
Süleyman Ulupınar, Serhat Özbay, Cebrail Gençoğlu, Émerson Franchini, Necip Fazıl Kishalı, İzzet İnce
Abstract
BACKGROUND/OBJECTIVE: This study aims to compare the effect of sprint distance and repetition number on performance, physiological responses, and energy systems contributions. METHODS: and lactate values, the energy system contributions were calculated using a mono-exponential model and mathematical calculations. Energy systems contributions and total energy expenditure (TEE) were calculated both for the entire protocol (overall) and for the sprints only. RESULTS: ) systems contributions were higher in the 10 × 40. CONCLUSIONS: Although HR and RPE responses were higher in the 20 × 20, phosphagen (during sprints) and glycolytic (during both sprints and overall protocol) were higher in the 10 × 40 protocol. Therefore, the 10 × 40 protocol seems more reasonable for developing or evaluating the anaerobic systems.