Efeitos da suplementação de lactato de cálcio no desempenho de jovens atletas de futebol

• Autor(a) principal: Azevedo, Henrique Assis Marques de [UNIFESP]
• Data de Publicação: 2024
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UNIFESP
• Texto Completo: https://hdl.handle.net/11600/71381
• topic: Futebol; Fadiga; Ajuda ergogênica; Metabolismo; Football; Fatigue; Ergogenic aid; Metabolism

We aimed to determine whether calcium lactate supplementation could enhance athletic performance in a study that followed a double-blind, randomized, counterbalanced, and cross-over design. Fifteen under-15 soccer athletes performed squat jump (SJ), countermovement squat jump (CMJ), 20-m linear sprint,and change of direction (COD) tests, and running anaerobic sprint test (RAST). The first session served as control. In each experimental session, the participants ingested one of the following: calcium lactate (21.5 mg.kg-1 body mass) or a placebo (PL, calcium carbonate, 21.5 mg.kg-1 body mass) 60-min before the tests. There were no significant differences between conditions for SJ(33.0±5.49; 32.3±5.40; 32.6±5.29 cm), CMJ (34.1±5.57; 33.6±5.41; 34.1±5.04 cm), COD (4.8±0.24; 5.0±0.44; 4.8±0.30 sec), and minimum power obtained in the RAST (4.9±1.0; 4.9±1.0; 4.8±1.2 W.kg-1 ) (P>0.05) for control, placebo, and lactate conditions, respectively. Conversely, we observed a performance decrement (P<0.05) in the 20-m linear sprint test in the placebo and lactate conditions(3.3±0.22; 3.4±0.24; 3.4±0.23 sec); and in relative peak power (7.7±1.8; 7.3±1.5; 7.1±1.6 W.kg-1 ), relative mean power (6.1±1.3; 5.9±1.2; 5.8±1.3 W.kg-1 ), and fatigue index (60.3±11.2; 56.4±7.7; 54.3±6.9 %) in the RAST following calcium lactate supplementation, for control, placebo, and lactate conditions, respectively. In conclusion, calcium lactate supplementation impaired repetitive running sprint ability and contributed to increased fatigue.