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Μόνιμο URI για αυτήν τη συλλογήhttps://repository.ihu.gr/handle/11544/47624
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Τεκμήριο The acute and long-term effects of pre-workout supplement ingestion on athletic performance in basketball players.(ΔΙΠΑΕ, 2024-07-20) DOULIGERIS, ATHANASIOS; Papadopoulou, Sousana; Σχολή Επιστημών Υγείας, Τμήμα Επιστημών Διατροφής και ΔιαιτολογίαςThe primary objectives of the present thesis were to i) investigate the acute (single dose) effects of a pre-workout supplement [PWS; 200 mg caffeine, 3.3 g creatine monohydrate, 3.2 g β-alanine, 6 g citrulline malate and 5 g branched-chain amino acid (BCAA) per dose] on jumping, sprinting, agility, anaerobic and aerobic performance and ii) examine long-term (4 weeks) effects of a PWS on body composition, anaerobic alactic (jumping, sprinting, agility), anaerobic lactic (Running-based Anaerobic Sprint Test: RAST), and aerobic performance and muscle damage/health-related markers within the in-season period in well-trained basketball players. 30 well-trained basketball players (age: 25.2 ± 6.8 years, height: 185.6 ± 7.0 cm, weight: 85.8 ± 11.7 kg, body fat: 16.9 ± 3.7 %) in a double-blind placebo-controlled study, that investigated the acute (single dose) effect of a PWS on anaerobic alactic (jumping, sprinting, agility), anaerobic lactic (RAST) and aerobic performance (Yo-Yo Intermittent Recovery Test Level 1) were assigned either to pre-workout (PWS, n=15) or placebo (PL, n=15) groups. Basketball-specific performance measurements were assesed on two different days (1-week interval) within the in-season period. During the first trial, half of the players in each group randomly performed the measurements without PWS or PL, while the remaining participants, 30 minutes before the assessments, consumed PWS or PL. The reverse condition was implemented during the second trial. Eighteen basketball players (age: 24.4 ± 6.3 years, height: 185.7 ± 8.0 cm, weight: 85.7 ± 12.8 kg, body fat: 16.5 ± 4.2 %) in a randomized, double-blind, parallel 4-week study that investigated the effects of a PWS ingested prior to exercise on body composition, anaerobic lactic (jumping, sprinting, agility) performance, anaerobic lactic (RAST) performance, aerobic (Yo-Yo Intermittent Recovery Test Level 1) performance, and muscle damage/health-related markers, were randomly seperated into two different groups: pre-workout supplement (PWS, n = 10) or placebo (PL, n = 8). Supplementation lasted four weeks during the in-season period, with daily ingestion of 20 grams of PWS or isocaloric PL 30 minutes before training or after waking up on off days. The results following acute PWS ingestion indicated significant improvements in counter-movement jump (CMJ) (PWS: 4.3±2.1%; PL: 1.2±1.0%), agility (PWS: -2.9±1.8%; PL: 1.8±1.7%), RAST average (PWS: 18.3±9.1%; PL: -2.2±2.0%), minimum power (PWS: 13.7±8.9%; PL: - 7.5±5.9%), and fatigue index (PWS: -25.0± 0.9%; PL: -4.6± 0.6%) in PWS group (p < 0.05) vs. PL group (p > 0.05). No significant changes were found, either within or between groups in sprinting, aerobic performance, or blood lactate concentrations (p > 0.05). The results following four weeks of PWS ingestion indicated significant improvements in aerobic performance in PWS group (PWS: 8 ± 6%; PL: -2 ± 6%; p = 0.004) compared to PL. Moreover, it was found that both groups had a significant decrease in peak (F=7.0; p = 0.017), average (F=10.7; p = 0.005), and minimum power (F=5.1; p = 0.039) after the 4-week supplementation period. We did not detect any other significant changes between groups (p > 0.05). According to the results of our study and considering the study's limitations, it seems that an acute consumption of PWS could improve basketball players' jumping, agility and anaerobic performance but not peak power, sprinting and aerobic performance. Moreover, 4 weeks of PWS supplementation within the in-season period seems to beneficially affect the aerobic performance of well-trained basketball players. However, it did not prevent the observed decrease in anaerobic power and had no effect on the other measurements of anaerobic alactic performance (jumping, sprinting, and agility performance). Hence, no other significant changes were found in body composition, or muscle damage and health-related bloodborne markers.