Exercise-Induced Transient Oxidative Stress Is Mitigated in Down Syndrome: Insights About Redox Balance and Muscle Strength.

ABSTRACT: Reis, AL, Deus, LA, Neves, RVP, Corrêa, HL Reis, TL, Aguiar, LS Honorato, FS, Barbosa, JMS, Araújo, TB, Palmeira, TRC, Simões, HG, Prestes, J, Sousa, CV, Ide, BN, and Rosa, TdS. Exercise-induced transient oxidative stress is mitigated in Down syndrome: insights about redox balance and muscle strength. J Strength Cond Res 38(3): e125-e34, 2024-This study aimed to evaluate the acute effects of a session of resistance exercise (RE) performed with elastic tubes on the redox balance and inflammatory profile in individuals with Down syndrome (DS). Subjects ( n = 23) were allocated into 2 groups: individuals with DS (DS; n = 11) and individuals without DS (WDS; n = 12), who performed an acute RE session. Diagnostic assessment included medical history, anthropometric measures (body height, body mass, body mass index, and body composition assessment), biological collections, muscle strength assessments (handgrip and maximal voluntary isometric contraction tests), and exercises. The redox balance and inflammatory profile were assessed in urine and saliva samples before and after an acute RE session. There were no differences between WDS and DS groups for body composition ( p > 0.05). The DS group presented higher values pre and post an acute RE session with elastic tubes for oxidative and proinflammatory markers compared with WDS ( p < 0.05). Uric acid values increased from pre-acute RE session to post-acute RE session for WDS ( p < 0.0001). No differences were identified within groups for the delta analysis ( p > 0.05). Inverse correlations were found between total force and F2-isoprostane, 8OHdG, uric acid, allantoin, IL-6, TNF-α, and the TNF-α:IL-10 ratio. A positive correlation was found between IL-10 and total force. The DS group presented increased peak force in the knee extension and elbow flexion exercises (∼25 and 12%, respectively) but decreases in handgrip strength of ∼7%. The WDS group showed higher peak force values for knee extension, elbow flexion, and handgrip (∼16, 10, and 14%, respectively). The DS group had lower transient elevation of oxidative stress after an acute RE session compared with WDS. Oxidative stress and inflammation responses of DS to an acute RE session with elastic tubes may be insufficient to induce health adaptations for the same relative load compared with WDS.

Atitudes e crenças de médicos ginecologistas- -obstetras e de pacientes do Hospital Universitário de Brasília sobre o rastreamento cervical e o exame pélvico / Attitudes and beliefs of obstetrician-gynecologists and patients at the University Hospital of Brasília about cervical screening and pelvic examination

Objetivo: Avaliar as atitudes e crenças de pacientes e médicos ginecologistas-obstetras sobre o rastreamento cervical e o exame pélvico no Hospital Universitário de Brasília (HUB). Métodos: Foram realizadas entrevistas com pacientes que aguardavam por uma consulta previamente agendada no ambulatório de ginecologia e com médicos ginecologistas-obstetras que atuavam no HUB. Cada grupo respondeu a um questionário que enfocava a realização do rastreamento cervical e do exame pélvico (EP). Resultados: No total, 387 pacientes responderam ao questionário. Dessas, apenas 4,13% sabiam que, de acordo com as diretrizes brasileiras, o rastreamento cervical deveria ser iniciado aos 25 anos de idade, 5,17% sabiam que ele deveria ser encerrado aos 64 anos e 97,93% esperavam um intervalo menor do que o trienal recomendado. Após serem informadas sobre as diretrizes, 66,93% acreditavam que o início aos 25 anos é tardio, 61,5%, que o encerramento aos 64 anos é precoce, 88,37%, que o intervalo trienal é muito longo e 94,06% ficaram com receio de que problemas de saúde pudessem aparecer nesse intervalo. Dos 44 médicos que responderam ao questionário, embora a maioria concordasse com as diretrizes, somente 31,82%, 38,64% e 34,1% as seguia com relação à frequência, à idade de início e à idade de encerramento, respectivamente. Quanto ao EP, aproximadamente metade dos participantes de cada grupo considerava que o exame deveria ser realizado nas consultas regulares com o ginecologista. Conclusão: Foi observada uma discrepância entre as expectativas das pacientes e as diretrizes para o rastreamento de câncer cervical. A maior parte das pacientes não as conhecia e, quando informadas, não concordava com elas. Quanto aos médicos ginecologistas- obstetras, a maioria não as seguia, apesar de conhecê-las. Quanto ao EP, grande parte dos médicos e pacientes considerava-o importante e acreditava que ele deveria ser realizado de forma rotineira nas consultas ginecológicas.

Objective: Evaluate the attitudes and beliefs of patients and obstetrician-gynecologists about cervical screening and pelvic examination in the University Hospital of Brasília (HUB). Methods: Face-to-face interviews with patients waiting for a previously scheduled consultation at the gynecology outpatient clinics and attending obstetrician-gynecologists at the HUB. Each group answered a questionnaire addressing cervical screening and pelvic examination (PE). Results: 387 patients answered the questionnaire. Of these, only 4.13% were aware that, according to Brazilian guidelines, cervical screening should begin at age 25, 5.17% that it should stop at age 64 and 97.93% expected a shorter interval than the recommended triennial. After being informed of the guidelines, 66.93% believed that starting at age 25 is late, 61.5% that stopping at 64 is early, 88.37% that the triennial interval is too long, and 94.06% would be afraid that health problems could appear during the interval. Of the 44 participating physicians, although most agreed with the guidelines, only 31.82%, 38.64% and 34.1% followed them regarding frequency, starting and stopping age, respectively. As for EP, approximately half of the participants in each group believed that it should be performed in regular consultations with the gynecologist. Conclusion: There was a discrepancy between patients' expectations and cervical screening guidelines. Most patients didn't know and, when informed, didn't agree with them. As for Ob-Gyn physicians, most did not follow these guidelines, despite knowing them. As for pelvic exam, most physicians and patients considered it important and believed it should be routinely performed during gynecological consultations.

Modulus of Elasticity of Elastic Tubes Used in Neuromuscular Rehabilitation Programs.

CONTEXT: The elastic tubes have been used for clinical rehabilitation programs in which exercises are performed with submaximal intensities due to the difficulty in the measure the applied force. The authors aimed to quantify the elastic constant of elastic tubes used in neuromuscular rehabilitation programs predicting the force related to elastic tube elongation. A force test was performed by stretching the elastic tubes to determine the relationship between force and elongation. Eight elastic tubes with progressive levels of resistance represented by colors (yellow, red, blue, gray, black, grape, purple, and gold-low to higher resistance) were used. DESIGN: Experimental. METHODS: The test and retest were compared using the paired t test. The agreement and reliability between the test versus retest of pooled means colors were analyzed by plotting the Bland-Altman graph and intraclass correlation coefficient and the coefficient of variation. Pearson correlation was used to verify the validity between measurements. RESULTS: The force values generated from the elastic tube elongation increase according to the color and thickness of elastic tubes with a strong and significant association between them (P < .0001). The elastic constant measurements were similar and presented high intraclass correlation coefficient values, low coefficient of variation values, and were reproducible (P < .0001). CONCLUSIONS: The force could be quantified according to elastic tube length variation by the linear regression equation with reproducibility. It gives greater measurement precision and better training load control when using elastic tubes in strength training programs.

Are Resistance Training-Induced BDNF in Hemodialysis Patients Associated with Depressive Symptoms, Quality of Life, Antioxidant Capacity, and Muscle Strength? An Insight for the Muscle-Brain-Renal Axis.

BACKGROUND: Hemodialysis patients are suffering from depressive symptoms. Brain-derived neurotrophic factor (BDNF) levels are negatively associated with depressive symptoms and decrease during a single hemodialysis session. Resistance training (RT) might be an additional non-pharmacological tool to increase BDNF and promote mental health. METHODS: Two randomized groups of hemodialysis patients: control (CTL, n = 76/F36; 66.33 ± 3.88 years) and RT (n = 81/F35; 67.27 ± 3.24 years). RT completed six months of training thrice a week under the supervision of strength and conditioning professional immediately before the dialysis session. Training loads were adjusted using the OMNI rating of perceived exertion. The total antioxidant capacity (TROLOX), glutathione (GSH), thiobarbituric acid reactive substance (TBARS), and BDNF levels were analyzed in serum samples. Quality of life (assessed through Medical Outcomes-SF36), and Beck Depression Inventory was applied. RESULTS: RT improved handgrip strength (21.17 ± 4.38 vs. 27.17 ± 4.34; p = 0.001) but not for CTL (20.09 ± 5.19 vs. 19.75 ± 5.54; p = 0.001). Post-training, RT group had higher values as compared to CTL related to TROLOX (RT,680.8 ± 225.2 vs. CTL,589.5 ± 195.9; p = 0.001) and GSH (RT, 9.33 ± 2.09 vs. CTL,5.00 ± 2.96; p = 0.001). RT group had lower values of TBARS as compared to CTL at post-training (RT, 11.06 ± 2.95 vs. CTL, 13.66 ± 2.62; p = 0.001). BDNF increased for RT (11.66 ± 5.20 vs. 19.60 ± 7.23; p = 0.001), but decreased for CTL (14.40 ± 4.99 vs. 10.84 ± 5.94; p = 0.001). Quality of life and mental health increased (p = 0.001) for RT, but did not change for CTL (p = 0.001). BDNF levels were associated with emotional dimensions of SF36, depressive symptoms, and handgrip (p = 0.001). CONCLUSIONS: RT was effective as a non-pharmacological tool to increased BDNF levels, quality of life, temper the redox balance and decrease depressive symptoms intensity in hemodialysis patients.