Navegando por Autor "Grigoletto, Marzo Edir da Silva"
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Item Comparison of post-exercise hypotension responses in Paralympic Powerlifting athletes after completing two bench press training intensities.(2020) Paz, Ângelo de Almeida; Martins, Felipe José Aidar; Matos, Dihogo Gama de; Souza, Raphael Fabrício de; Grigoletto, Marzo Edir da Silva; Tillaar, Roland van den; Ramirez Campillo, Rodrigo; Nakamura, Fábio Yuzo; Costa, Manoel da Cunha; Silva, Albená Nunes da; Silva, Anselmo de Athayde Costa e; Marçal, Anderson Carlos; Reis, Victor MachadoBackground and objective: Post-exercise hypotension, the reduction of blood pressure after a bout of exercise, is of great clinical relevance. Resistance exercise training is considered an important contribution to exercise training programs for hypertensive individuals and athletes. In this context, post-exercise hypotension could be clinically relevant because it would maintain blood pressure of hypertensive individuals transiently at lower levels during day-time intervals, when blood pressure is typically at its highest levels. The aim of this study was to compare the post-exercise cardiovascular effects on Paralympic powerlifting athletes of two typical high-intensity resistance-training sessions, using either five sets of five bench press repetitions at 90% 1 repetition maximum (1RM) or five sets of three bench press repetitions at 95% 1RM. Materials and Methods: Ten national-level Paralympic weightlifting athletes (age: 26.1 ± 6.9 years; body mass: 76.8 ± 17.4 kg) completed the two resistance-training sessions, one week apart, in a random order. Results: Compared with baseline values, a reduction of 5–9% in systolic blood pressure was observed after 90% and 95% of 1RM at 20–50 min post-exercise. Furthermore, myocardial oxygen volume and double product were only significantly increased immediately after and 5 min post-exercise, while the heart rate was significantly elevated after the resistance training but decreased to baseline level by 50 min after training for both training conditions. Conclusions: A hypotensive response can be expected in elite Paralympic powerlifting athletes after typical high-intensity type resistance-training sessions.Item Electromyographic activity and 15RM load during resistance exercises on stable and unstable surfaces.(2016) Aranda, Liliane Cunha; Mancini, Marcelly; Werneck, Francisco Zacaron; Novaes, Jefferson da Silva; Grigoletto, Marzo Edir da Silva; Vianna, Jeferson MacedoThe purpose of this study was to compare electromyographic (EMG) activity and a 15-maximum repetition (15RM) load in bench press (BP) and free squat (FS) on a stable surface (SS) and an unstable surface (US). Nineteen healthy men (age 24.65 ± 3.48 yrs) volunteered for five testing sessions. The load value for the FS on the SS was higher than on the US (83.9 ± 18.67 kg vs. 70.3 ± 10.07 kg, P=0.001). No significant difference was observed between BP on either surface to load value (66 ± 10.15 kg vs. 64.2 ± 8.63 kg, P=0.231). For EMG, no significant differences were observed in the anterior deltoid (0.52 ± 0.13 vs. 0.65 ± 0.42, P=0.06), pectoralis major (0.40 ± 0.44 vs. 0.30 ± 0.21, P=0.14), biceps femoris (0.09 ± 0.08 vs. 0.08 ± 0.06, P=0.50), or vastus lateralis (0.34 ± 0.21 vs. 0.34 ± 0.22, P=0.76) between conditions. Thus, the findings indicate that an US produces similar muscle activation as a SS produce using lower loads.