Efeitos de bebida achocolatada suplementada na recuperação pós-exercício

• Ano de defesa: 2016
• Autor(a) principal: Cristiano Diniz da Silva
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Minas Gerais; UFMG
• Palavras-chave em Português: Exercício; Fadiga; Bebida achocolatada; Leucina; Suplementos nutricionais; Recuperação; Exercícios físicos Aspectos fisiológicos; Aptidão física; Suplemento alimentar
• Link de acesso: http://hdl.handle.net/1843/BUOS-AQSJRR

The objective of this study is to examine the effects of supplementation of isolated leucine (L-leucine) in a particularized array of chocolate milk drink on the recovery reference markers after acute disorders of physiological and metabolic homeostasis due to an exercise protocol that simulates soccer. The hypothetical condition was that the addition of L-leucine would create a blend that would sustain the anabolic potential and anti-proteolytic of this amino acid, furthermore to considering the need and kinetics of specific absorption to recovery demands of soccer players, presenting therefore, synergistic potential effect to the recovery process, especially via insulin response. After the lifting of macro and micronutrients and establishment of the ingredients and production of the flow chart, the experimental chocolate beverage supplemented with L-leucine [Ball] and a placebo drink was developed for experimental control using the same array, however added in equivalence with bovine collagen hydrolyzate [BACH]. Thus, isovolumetric intake, isonitrogenous and isoenergetic was allowed during treatments. Results demonstrated that the manufacturing process of the drinks presented problems in saturation due to the amount of solute. However, the "background body" formed was subject to correction with the proposed "shake before drinking." Both drinks were within tolerable limits of microbiological condition (aerobic mesophilic: ~1.2x102 CFU/mL, total coliforms: ~1x102 CFU/mL, and absence of Salmonella and E.Coli) to the Normative Instruction. 16/2005. These results show that BALL meets the parameters required by law to pasteurized milk drink, a product considered a reference for similarity in the absence of specific legislation in Brazil to "chocolate milk supplemented", resulting in a product with good sanitary conditions, suitable for human consumption. For recovery effect of the test phase of such experimental drink, 20 volunteers, soccer team members of the University Athletic League were randomly assigned (BALL, N= 10, 23 ± 2 years, 74 ± 14 kg, 174 ± 5 cm; BACH, N= 10; 23 ± 2 years 73 ± 7 kg 176 ± 5 cm) after soccer simulation protocol (SAFT90+) and recovery monitored parameters to 24 h. Using BALL after exercise, it was possible to observe a high affective sensory acceptance rate (84% to 90% for general impression, appearance, consistency and flavor), which did not modify the timeline of ingestion whith no occurrence of gastrointestinal discomfort (p>0.05). BALL caused a significant increase in the insulin level for 2 h after ingestion (BALL= 43 ± 20 UI/mL vs. 21 ± 10 BACH= UI/mL; p<0.05, 2= 0.24) with clinical probability or practical significance observed as "very likely" (95%; 2.1 x/÷ ± 1.7 [90% CI]). BALL amortized CK answers and showed less significant value at 24 h post-ingestion (BALL= 619 ± 267 U/L vs. BACH= 1,208 ± 731 U/L; p<0.05, 2= 0.241) with clinical probability or practical significance "seen as likely" (89%; 1.5 x/÷ ± 1.3 [90% CI]). There was no significant change in time course between drinks and return to pre-exercise values of testosterone, cortisol, testosterone/cortisol ratio (T/C) in general markers of immunity, myoglobin and body mass and the recovery scales perceived and muscle pain to 4 hours post-ingestion. Beverages do not affect hematocrit (BALL= 47 ± 2% vs. BACH= 44 ± 2%) and cause high rate of fluid retention of up to 4 h after ingestion (BACH= 78 ± 19%; BALL= 79 ± 13%), with no difference between them (p>0.05). However, there was impairment of the hydration status via urine specific gravity, with most of the volunteers classified as "significant dehydration" or "severe" (BALL= 70%; BACH= 100%), losses in the delta plasma volume (BALL= ~-2.2 ± 4.2% and BACH= ~ -1.1 ± 5%), and not restoring the sensation of thirst for pre-exercise values up to 4 h after ingestion. In conclusion, that the intervention with BALL caused a significant synergistic increase in insulin after 2 h of ingestion, showing high score affective to sensory acceptance, no feeling of gastrointestinal discomfort and high rate of fluid retention, as well as amortization of CK responses at 24 h post-ingestion. However, BALL did not reveal significant differences in perception of muscle pain, testosterone, cortisol, the T/C in the general markers of immunity, myoglobin, body weight and the perceived recovery scales and muscle pain. According to Resolution RDC n.º. 18/2010, BALL is constituted as a "supplement for partial meal replacement for athletes."