Percorrer por autor "Silva, Fernanda"
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- Changes in Metabolic and Inflammatory Markers after a Combined Exercise Program in Workers: A Randomized Controlled TrialPublication . Silva, Fernanda; Duarte-Mendes, Pedro; Ferreira, José Pedro; Carvalho, Eugenia; Monteiro, Diogo; A, Massart; Farinha, Carlos; SOARES, CM.; A, TeixeiraPurpose We investigated the effects of a 16-week combined exercise training on body composition, and metabolic and inflammatory markers in sedentary middle-aged workers. We also assessed whether alterations in metabolic markers were associated with changes in health-related outcomes. Methods This randomized controlled trial involved 46 participants randomly allocated into control and exercise groups. The exercise group performed 16-wk combined aerobic and resistance training for 75 min per session, 3 times a week. Fasting blood samples were collected at baseline and after 16-wk intervention to determine lipid profile, and metabolic and inflammatory markers as primary outcomes. Results A total of 36 participants completed the intervention (53.70 ± 6.92 yr old; n = 18 in each group). Waist circumference (interaction effect: F = 7.423, P = 0.002), fat mass (interaction effect: F = 5.070, P = 0.011), and muscle mass (interaction effect: F = 5.420, P = 0.007) were improved in the exercise group compared with the control group. Fasting glucose increased after the 16-wk follow-up (time effect: F = 73.253, P < 0.001), without an intergroup difference. Insulin levels were greater in the control compared with exercise group (group effect: F = 6.509, P = 0.015). The control group tended to increase the homeostatic model assessment of insulin resistance index (interaction effect: F = 3.493, P = 0.070) and to decrease the QUICKI index (interaction effect: F = 3.364, P = 0.075) to a greater extent compared with the exercise group. Exercise group reduced leptin (interaction effect: F = 11.175, P = 0.002) and adiponectin (interaction effect: F = 4.437, P = 0.043) concentrations in a greater magnitude than the control group. Interleukin (IL)-6 (time effect: F = 17.767, P < 0.001) and tumor necrosis factor α (time effect: F = 9.781, P = 0.004) concentrations decreased after the intervention, without an intergroup difference. IL-17A levels increased in the control compared with exercise group (interaction effect: F = 5.010, P = 0.033). Effects on adiponectin, IL-6, and IL-17A levels seem to depend on baseline body mass index, age, and sex. Percentage changes in leptin correlated positively with changes in homeostatic model assessment of insulin resistance index in the exercise (r = 0.565, P = 0.015) and control (r = 0.670, P = 0.002) groups. Conclusions A combined training program can be an effective strategy to improve body composition and inflammatory markers and prevent marked reductions in insulin sensitivity among middle-aged workers.
- Heart rate variability activity in soccer athletes after a musculoskeletal injuryPublication . Flores, Gonçalo; Monteiro, Diogo; Silva, Fernanda; Duarte-Mendes, PedroObjectives: The aim of this study is to analyse the adaptations of the autonomic nervous system after a musculoskeletal injury, obtained by measuring heart rate variability in athletes. It was hypothesized that there is an alteration in heart rate variability after a musculoskeletal injury. Study design: Cohort study. Subjects: 15 semi-professional soccer players from three football teams, aged between 21 and 33 (mean age: 29.4 ± 3.31 years), with a recent musculoskeletal injury. Methods: Heart rate variability was collected using the Polar m200 and the chest strap H10 in two moments: within 72 h after the injury and between 5 and 7 days after full return-to-play. Results: Results show differences between T1 and T2 (p ≤ 0.05) in low-frequency power (n.u.) (p = 0.001) and high-frequency power (n.u.) (p = 0.001), in low-frequency/high-frequency ratio (p = 0.001) and in high-frequency power (ms2) (p = 0.017) measures. No statistical differences were found in low-frequency power (ms2) (p = 0.233). The low frequency power (n.u.) was significantly lower after injury compared with LF power (n.u.) values after full return-to-play. In high-frequency power there was a significant difference between both moments with high values after injury. Conclusions: The use of heart rate variability therefore seems to be promising to detect an imbalance in the autonomic nervous system and help clinical departments to identify a possible non-traumatic musculoskeletal injury. Further research should be performed considering a wide range of musculoskeletal injuries and to establish baseline values of the athletes.
- Heart rate variability behavior in athletes after a sports concussion: A systematic reviewPublication . Flores, Gonçalo; Monteiro, Diogo; Silva, Fernanda; Duarte-Mendes, PedroObjective This systematic review aims to investigate the adaptations of the autonomic nervous system (ANS) after a concussion by measuring HRV in athletes over the age of 16 after injury. Methods This systematic review followed the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA). Web of Science, Pubmed, SCOPUS, and Sport Discus were searched using predefined search terms to identify relevant original cross-sectional, longitudinal, and cohort epidemiological studies published before December 2021. Results After screening 1737 potential articles, four studies met the inclusion criteria. Studies included participants with concussion (n = 63) and healthy control athletes (n = 140) who practised different sports. Two studies describe a decrease in HRV following a sports concussion, and one proposed that the resolution of symptoms does not necessarily reflect ANS recovery. Lastly, one study concluded that submaximal exercise induces alteration in ANS, not seen in rest after an injury. Conclusions In the frequency domain, a decrease in high frequency power and an increase of low frequency/high frequency ratio is expected, as the activity of the sympathetic nervous system increases, and the parasympathetic nervous system decreases after injury. In the frequency domain, heart rate variability (HRV) may help monitor the activity of ANS evaluating signals of somatic tissue distress and early identification of other types of musculoskeletal injuries. Further research should investigate the relationship between HRV and other musculoskeletal injuries.
- Lesões no boxe em Portugal: análise da incidência, mecanismos, factores de risco e medidas de prevenção de lesõesPublication . Fernandes, Ricardo; Monteiro, Diogo; Alexandre, Élio; Susano Jacinto, Miguel Ângelo; Silva, Fernanda; Flores, Gonçalo; Travassos, Bruno; Duarte-Mendes, PedroIntrodução: A modalidade do boxe está associada a uma elevada taxa de lesões e traumatismos cranianos graves, onde a cabeça, os ombros, os punhos e as mãos são as regiões do corpo mais afetadas. Objetivos: este estudo teve como objetivos quantificar a incidência de lesões relacionadas com a prática de boxe e a identificação de padrões de lesões e fatores de risco. Além disso, foi analisada a eficácia de medidas preventivas de lesões e as adaptações comportamentais após lesão. Metodologia: Foi utilizado um questionário para a recolha dos dados dividido em três partes: dados pessoais, experiência de treino e exposição e lesões. Resultados: 583 questionários foram analisados. Os resultados mostraram que 76% dos indivíduos eram do sexo masculino, e 70,5% nunca competiram. O sparring foi a técnica que levou a 34,3% das lesões, e a inflamação foi a lesão mais comum (28,1%). Discussão: A literatura demonstra que a incidência de lesão diminuiu no boxe amador nos últimos anos, mantendo-se no profissional. A incidência de lesão é superior no boxe profissional e o sparring é a técnica que leva a um maior número de lesões. Os alongamentos parecem ser o comportamento preventivo mais comum após lesão. Conclusões: Este estudo permite demonstrar que a altura, a frequência de competição, o nível de competição e o treino de força são os fatores mais associadas ao número de lesões nos praticantes de boxe.
- Objectively Measured Physical Activity and Sedentary Behaviour on Cardiovascular Risk and Health-Related Quality of Life in Adults: A Systematic ReviewPublication . Santos, Beatriz; Monteiro, Diogo; Silva, Fernanda; Flores, Gonçalo; Bento, T.; Duarte-Mendes, PedroBackground: This systematic review analysed the association between objectively measured physical activity and sedentary behaviour with cardiovascular risk and HRQoL in adults without previous CVD. Additionally, we analysed the impact of the intensity of the physical activity in this association. Methods: The search was carried out in three electronic databases with access until February 2023 to find studies with an observational design. For quality assessment, we used The National Institute of Health (NIH) Quality Assessment Tool for Observational Cohort and Cross-Sectional Studies. Results: We identified 5819 references, but only five studies were included. One study shows a positive association between physical activity and HRQoL, while sedentary behaviour was negatively related to HRQoL. Another study showed an association between high-intensity physical activity with a better physical component of HRQoL and low-intensity physical activity with a better mental component of HRQoL. Three studies concluded that higher levels of physical activity are associated with lower levels of cardiovascular risk and higher levels of sedentary behaviour are associated with higher levels of cardiovascular risk. Conclusion: Our findings suggested that people who spend more time being active and spend less time being sedentary appear to have lower cardiovascular risk and higher HRQoL.