Navegando por Autor "Tillaar, Roland van den"
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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 Physiological and biochemical evaluation of different types of recovery in National Level Paralympic Powerlifting.(2021) Santos, Wélia Yasmin Horacio dos; Martins, Felipe José Aidar; Matos, Dihogo Gama de; Tillaar, Roland van den; Marçal, Anderson Carlos; Lobo, Lázaro Fernandes; Barbosa, Lucas Soares Marcucci; Machado, Saulo da Cunha; Almeida Neto, Paulo Francisco de; Garrido, Nuno Domingos; Reis, Victor Machado; Vieira, Erica Leandro Marciano; Cabral, Breno Guilherme de Araújo Tinôco; Alves, José Vilaça; Silva, Albená Nunes da; Silva Júnior, Walderi Monteiro daBackground: Recovery from training is vital as it ensures training and performance to continue at high intensities and longer durations to stimulate the body and cause further adaptations. Objective: To evaluate different methods of post-workout recovery in Paralympic powerlifting athletes. Methods: Twelve male athletes participated (25.4 ± 3.3 years; 70.3 ± 12.1 kg). The presence of muscle edema, pain threshold, plasma cytokines, and performance measurement were evaluated five times. The recovery methods used in this study were passive recovery (PR), dry needling (DN), and cold-water immersion (CWI). Results: The data analysis showed that the maximal force decreased compared to the pretest value at 15 min and 2 h. The results also revealed that CWI and DN increased Interleukin 2 (IL-2) levels from 24 to 48 h more than that from 2 h to 24 h. After DN, muscle thickness did not increase significantly in any of the muscles, and after 2 h, muscle thickness decreased significantly again in the major pectoralis muscle. After CWI, pain pressure stabilized after 15 min and increased significantly again after 2 h for acromial pectoralis. Conclusion: The strength training sessions generate several changes in metabolism and different recovery methods contribute differently to maintain homeostasis in Paralympic powerlifting athletes.