Browsing by Author "Almeida Neto, Paulo Francisco de"

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    Can creatine supplementation interfere with muscle strength and fatigue in Brazilian National Level Paralympic Powerlifting?
    (2020) Sampaio, Carlos Rodrigo Soares Freitas; Martins, Felipe José Aidar; Ferreira, Alexandre R. P.; Santos, Jymmys Lopes dos; Marçal, Anderson Carlos; Matos, Dihogo Gama de; Souza, Raphael Fabrício de; Moreira, Osvaldo Costa; Guerra, Ialuska; Fernandes Filho, José; Barbosa, Lucas Soares Marcucci; Silva, Albená Nunes da; Almeida Neto, Paulo Francisco de; Cabral, Breno Guilherme de Araújo Tinôco; Reis, Victor Machado
    The aim of the present study was to analyze the effect of creatine (Cr) supplementation on peak torque (PT) and fatigue rate in Paralympic weightlifting athletes. Eight Paralympic powerlifting athletes participated in the study, with 25.40 ± 3.30 years and 70.30 ± 12.15 kg. The measurements of muscle strength, fatigue index (FI), peak torque (PT), force (kgf), force (N), rate of force development (RFD), and time to maximum isometric force (time) were determined by a Musclelab load cell. The study was performed in a single-blind manner, with subjects conducting the experiments first with placebo supplementation and then, following a 7-day washout period, beginning the same protocol with creatine supplementation for 7 days. This sequence was chosen because of the lengthy washout of creatine. Regarding the comparison between conditions, Cr supplementation did not show effects on the variables of muscle force, peak torque, RFD, and time to maximum isometric force (p > 0.05). However, when comparing the results of the moments with the use of Cr and placebo, a difference was observed for the FI after seven days (U3 : 1.12; 95% CI: (0.03, 2.27); p = 0.02); therefore, the FI was higher for placebo. Creatine supplementation has a positive effect on the performance of Paralympic powerlifting athletes, reducing fatigue index, and keeping the force levels as well as PT.
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    Effects of resistance training and Bowdichia virgilioides hydroethanolic extract on oxidative stress markers in rats submitted to peripheral nerve injury.
    (2020) Costa, Luana Santos; Martins, Felipe José Aidar; Matos, Dihogo Gama de; Oliveira, José Uilien de; Santos, Jymmys Lopes dos; Almeida Neto, Paulo Francisco de; Souza, Raphael Fabrício de; Pereira, Danielle Dutra; Garrido, Nuno Domingos; Silva, Albená Nunes da; Marçal, Anderson Carlos; Estevam, Charles dos Santos; Cabral, Breno Guilherme de Araújo Tinôco; Reis, Victor Machado; Teixeira, Mauro Martins
    The objective of this study was to analyze the effects of the combination of resistance training (RT) and the hydroethanolic extract (EHE) of Bowdichia virgilioides as markers of oxidative stress (OS) in rats with peripheral nerve injury (PNI). Rats were allocated into six groups (n = 10): animals without interventions (C), animals with an exposed nerve but without injury, injured animals, trained and injured animals, injured animals that received EHE, and animals that received a combination of RT and EHE. RT comprised the climbing of stairs. EHE was orally administered (200 mg/kg) for 21 days after PNI induction. RT reduced the amount of lipoperoxidation in plasma (14.11%). EHE reduced lipoperoxidation in the plasma (20.72%) and the brain (41.36). RT associated with the extract simultaneously reduced lipoperoxidation in the plasma (34.23%), muscle (25.13%), and brain (43.98%). There was an increase in total sulhydrilyl levels (a) in the brain (33.33%) via RT; (b) in the brain (44.44%) and muscle (44.51%) using EHE; and (c) in the plasma (54.02%), brain (54.25%), and muscle using the combination of RT + EHE. These results suggest that RT associated with oral EHE results in a decrease in OS.
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    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 da
    Background: 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.
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    The impact of measures recommended by the government to limit the spread of coronavirus (COVID-19) on physical activity levels, quality of life, and mental health of Brazilians.
    (2020) Matos, Dihogo Gama de; Martins, Felipe José Aidar; Almeida Neto, Paulo Francisco de; Moreira, Osvaldo Costa; Souza, Raphael Fabrício de; Marçal, Anderson Carlos; Barbosa, Lucas Soares Marcucci; Martins Junior, Francisco de Assis Dias; Lobo, Lázaro Fernandes; Santos, Jymmys Lopes dos; Guerra, Ialuska; Silva, Anselmo de Athayde Costa e; Neves, Eduardo Borba; Cabral, Breno Guilherme de Araújo Tinôco; Reis, Victor Machado; Silva, Albená Nunes da
    To reduce transmission of the coronavirus, the Brazilian government adopted containment measures to control the virus’ spread, including limitations to the practice of physical activity. It was aimed to analyze the effects of COVID-19 quarantine on physical activity levels, energy expenditure, quality of life, and level of stress in a sample of the Brazilian population. The sample included 426 participants (7 to 80 years). The International Physical Activity Questionnaire, Short form survey-36 (SF-36), and Stress Perception Scale, were used to assess the level of physical activity, quality of life and stress, respectively. The anthropometric data was used to the assessment of body mass index and basal metabolic rate. Body weight increased significantly in all sample (p < 0.05). During the pandemic, 84% of the sample indicated a low level of physical activity. Furthermore, weekly energy expenditure decreased significantly in all age groups during the pandemic (children p < 0.0001; adolescents: p < 0.0001; adults p < 0.001, and elderly p < 0.0001). All aspects of quality of life, significantly reduced in both sexes in all age groups (p < 0.05). With the exception of children, stress levels increased significantly during the pandemic (adolescents: male: p = 0.003, female: p < 0.05; adults: male: p = 0.003, female: p = 0.01, and elderly: male: p = 0.02, female: p = 0.03). Findings from the present study suggests that COVID-19 social isolation has negatively affected Brazilian’ physical activity and quality of life.