Browsing by Author "Moreira, Osvaldo Costa"

Now showing 1 - 3 of 3
  • No Thumbnail Available
    Item
    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.
  • No Thumbnail Available
    Item
    Evaluation of a program of physical exercise on blood markers and sleep quality in elderly.
    (2019) Silva, Dilton dos Santos; Martins, Felipe José Aidar; Matos, Dihogo Gama de; Souza, Raphael Frabrício de; Moreira, Osvaldo Costa; Santos, Marcelo Danillo dos; Barros, Gilvandro Oliveira; Armas Alejo, Andres; Cabral, Breno Guilherme de Araújo Tinôco; Marçal, Anderson Carlos; Silva, Albená Nunes da
    Objective: Analyze the effects of a physical exercise program on blood markers and sleep quality in the elderly. Method: A total of 112 elderly people with metabolic diseases controlled by hypocholesterolemic and hypoglycemic medications participated in the study. The participants were divided into two groups, an exercise group composed of 54 individuals with a mean age of 62 years and control group of 58 individuals with a mean age of 63 years. Results: Blood glucose, total cholesterol, and triglyceride levels showed a mean reduction of 27.47, 18.13, and 23.48 mg/dl, respectively, and an increase of 8.98 mg/dl in the high-density lipoprotein level was seen. A significant change was seen in the low-density lipoprotein, very-low-density lipoprotein, and calcium levels on comparing the exercise group post-test values with that of the control group pre-test. The Pittsburgh Sleep Quality Index score showed a significant reduction of 3.15 (p < 0.001, p2=0.78) on comparing the exercise group with μp2=0.78) on comparing the exercise group with the control group. the control group. Conclusion: It can be concluded that the physical exercise program, consisting of supervised walking and gymnastics with localized quadriceps muscle strengthening exercises, performed for 16 weeks at a frequency of three times a week for 60 min, was effective in improving the low-density lipoprotein and very-low-density lipoprotein levels and sleep quality of the elderly.
  • No Thumbnail Available
    Item
    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.