Produção Nacional
Revisado por pares
Two Consecutive Days of Extreme Conditioning Program Training Affects Pro and Anti-inflammatory Cytokines and Osteoprotegerin without Impairments in Muscle Power
2016; Frontiers Media; Volume: 7; Linguagem: Inglês
10.3389/fphys.2016.00260
ISSN1664-042X
AutoresRamires Alsamir Tibana, Leonardo M. de Almeida, Nuno Manuel Frade de Sousa, Dahan da Cunha Nascimento, Ivo Vieira de Sousa Neto, Jeeser Alves de Almeida, Vinícius Carius de Souza, Maria de Fátima T. P. L. Lopes, Otávio Tolêdo Nóbrega, Denis César Leite Vieira, James W. Navalta, Jonato Prestes,
Tópico(s)Occupational Health and Performance
ResumoThe aim of this study was to investigate the effects of two consecutive Crossfit® training sessions (24 hours apart) designed to enhance work-capacity that involved both cardiovascular and muscular exercises on cytokines, muscle power, blood lactate and glucose. Nine male members of the CrossFit® community (age 26.7 ± 6.6 years; body mass 78.8 ± 13.2 kg; body fat 13.5 ± 6.2 %; training experience 2.5 ± 1.2 years) completed two experimental protocols (24 hours apart): 1) strength and power exercises 2) gymnastic movements and 3) metabolic conditioning as follows: 10 min of as many rounds as possible (AMRAP) of 30 double-unders and 15 power snatches (34kg). The same sequence as repeated on session 2 with the following metabolic conditioning: 12 min AMRAP of: row 250m and 25 target burpees. Serum interleukin-6 (IL-6), IL-10 and osteoprotegerin were measured before, immediately post and 24 h after training 1, immediately post, 24 h and 48 h after training session 2. Peak and mean power were obtained for each repetition (back squat with 50% of 1 repetition maximum) using a linear position transducer measured before, immediately post and 24 h after training 1, immediately post and 24 h after training session 2. Blood lactate and glucose were measured pre and immediately post-exercise sessions 1 and 2. Although both sessions of exercise elicited an significant increase in blood lactate (1.20 ± 0.41 to 11.84 ± 1.34 vs 0.94 ± 0.34 to 9.05 ± 2.56 mmol/l) and glucose concentration (81.59 ± 10.27 to 114.99 ± 12.52 vs 69.47 ± 6.97 to 89.95 ± 19.26 mg/dL), exercise training 1 induced a significantly greater increase than exercise training 2 (p ≤ 0.05). The training sessions elicited significant changes (p ≤ 0.05) in IL-6, IL-10 and osteoprotegerin concentration over time. IL-6 displayed an increase immediately after training session 1 [197 ± 109%] (p = 0.009) and 2 [99 ± 58%] (p = 0.045). IL-10 displayed an increase immediately after only training session 1 [44 ± 52%] (p = 0.046), and decreased 24 and 48 h following training session 2 (~40%; p = 0.018) as compared to pre-exercise values.
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