Combined Physical Training Increases Plasma Brain-Derived Neurotropic Factor Levels, But Not Irisin in People Living with HIV/AIDS

International Journal of Exercise Science 14(3): 1004-1017, 2021. This study evaluated plasma levels of brain-derived neurotropic factor (BDNF), irisin, and lactate in people living with HIV/AIDS who completed a combined physical training program. Nineteen HIV+ participants (age: 39.60 ± 10.96 years; carrier time: 7.75 ± 7.88 years; time of ART: 6.41 ± 5.93 years) performed strength/aerobic training (combined physical training) in the same session for 8 weeks and levels of BDNF, irisin, and lactate were assessed. BDNF (pg/mL) was higher post-CPT (Pre: 1258.73 ± 372.30; Post: 1504.17 ± 322.30; p \u3c 0.001). Irisin (ng/mL) showed no change (Pre: 115.61 ± 72.41; Post: 125.87 ± 81.14; p = 0.973). There was positive correlation between irisin and lactate (mmol/L) pre (r = 0.55, p = 0.04), and lactate values were higher in the group with the highest value of irisin (3.65 ± 0.69 x 2.82 ± 0.59, p = 0.02). Combined physical training results in increased basal BDNF in people living with HIV/AIDS, this finding suggests that increased concentration of BDNF may be associated with decreased chances of developing cognitive disorders or HIV-associated dementia. Further studies involving molecular mechanisms on this subject are necessary

Enhancing of women functional status with metabolic syndrome by cardioprotective and anti-inflammatory effects of combined aerobic and resistance training

These data describe the effects of combined aerobic plus resistance training (CT) with regards to risk factors of metabolic syndrome (MetS), quality of life, functional capacity, and pro- and anti-inflammatory cytokines in women with MetS. In this context, thirteen women (35.466.2 yr) completed 10 weeks of CT consisting of three weekly sessions of ,60 min aerobic training (treadmill at 65–70% of reserve heart rate, 30 min) and resistance training (3 sets of 8–12 repetitions maximum for main muscle groups). Dependent variables were maximum chest press strength; isometric hand-grip strength; 30 s chair stand test; six minute walk test; body mass; body mass index; body adiposity index; waist circumference; systolic (SBP), diastolic and mean blood pressure (MBP); blood glucose; HDL-C; triglycerides; interleukins (IL) 6, 10 and 12, osteoprotegerin (OPG) and serum nitric oxide metabolite (NOx); quality of life (SF-36) and Z-Score of MetS. There was an improvement in muscle strength on chest press (p = 0.009), isometric hand-grip strength (p = 0.03) and 30 s chair stand (p = 0.007). There was a decrease in SBP (p = 0.049), MBP (p = 0.041), Z-Score of MetS (p = 0.046), OPG (0.4260.26 to 0.3860.19 ng/mL, p,0.05) and NOx (13.362.3 mmol/L to 9.162.3 mmol/L; p,0.0005). IL-10 displayed an increase (13.667.5 to 17.2612.3 pg/mL, p,0.05) after 10 weeks of training. Combined training also increased the perception of physical capacity (p = 0.011). This study endorses CT as an efficient tool to improve blood pressure, functional capacity, quality of life and reduce blood markers of inflammation, which has a clinical relevance in the prevention and treatment of MetS

Tai chi chuan improves functionality and quality of life in elderly men with low bone mineral densit

OBJECTIVE: The purpose was to assess the effect of Tai Chi Chuan (TCC) on functional capacity (FC) and quality of life (QoL) in elderly men with low bone mineral density (BMD). METHODS: This quasi-experimental, controlled blinded trial evaluated 41 senior men (&ge; 60 years), divided into two groups: control group 1 – G1 (TCC; n = 20; 69.2 ± 6.2 years) and control group 2 – G2 (control; n = 21; 69.0 ± 5.7 years). The BMD (of lumbar spine and femur neck) was assessed by dual energy x-ray absorptiometry (DEXA). FC was assessed for aerobic endurance, for upper and lower limbs strength and flexibility, for static, dynamic and functional balance testes, and for risk of falls. QoL was assessed by the SF-36 questionnaire (MOS 36-item Short-Form Health Survey). G1 practiced the 24-form Yang style of TCC, for 12 weeks twice a week on low intensity; G2 did not practice oriented physical activity. RESULTS: TCC practitioners had significantly higher scores for aerobic endurance, upper and lower limbs strength, and dynamic balance. In terms of QoL, values were significantly better in total score and aspects such as FC, general health, vitality, and mental health. DISCUSSION: TCC was proven beneficial to FC and QoL scores, which adds evidence for its practice by elderly men with low BMD. CONCLUSION: TCC training is effective in improving FC and QoL in elderly men with low BMD.</p

A influência do genótipo da ECA sobre a aptidão cardiovascular de jovens do sexo masculino moderadamente ativos

FUNDAMENTO: O gene da enzima conversora de angiotensina (gene ECA) tem sido amplamente estudado em relação a fenótipos de aptidão cardiorrespiratória, contudo a associação do genótipo da ECA com corridas de meia-distância tem sido pouco investigada. OBJETIVO: O presente estudo investigou a possível influência da enzima conversora de angiotensina (ECA) (I/D) sobre a aptidão cardiovascular e o desempenho em corridas de meia-distância por parte de brasileiros jovens do sexo masculino. A validade da previsão de VO2max em relação ao genótipo da ECA também foi analisada. MÉTODOS: Um grupo homogêneo de homens jovens moderadamente ativos foi avaliado em um teste de corrida (V1600 m; m.min-1) e em um teste adicional em esteira ergométrica para a determinação de VO2max. Posteriormente, o [(0,177*V1600m) + 8.101] VO2max real e previsto foi comparado com os genótipos da ECA. RESULTADOS: O VO2max e V1600m registrados para os genótipos DD, ID e II foram 45,6 (1,8); 51,9 (0,8) e 54,4 (1,0) mL.kg-1.min-1 e 211,2 (8,3); 249,1 (4,3) e 258,6 (5,4 ) m.min-1, respectivamente e foram significativamente mais baixos para os genótipos DD (p < 0,05). O VO2max real e previsto não diferiram entre si, apesar do genótipo da ECA, mas o nível de concordância entre os métodos de VO2max real e estimado foi menor para o genótipo DD. CONCLUSÃO: Concluiu-se que existe uma possível associação entre o genótipo da ECA, a aptidão cardiovascular e o desempenho em corridas de média distância de jovens do sexo masculino moderadamente ativos e que a precisão da previsão do VO2max também pode ser dependente do genótipo da ECA dos participantes.Background: The angiotensin I-converting enzyme gene (ACE gene) has been broadly studied as for cardiorespiratory fitness phenotypes, but the association of the ACE genotype to middle-distance running has been poorly investigated.Objective: This study investigated the possible influence of Angiotensin-Converting Enzyme (ACE) genotype (I/D) on cardiovascular fitness and middle-distance running performance of Brazilian young males. The validity of VO2max prediction with regard to the ACE genotype was also analyzed.Methods: A homogeneous group of moderately active young males were evaluated in a 1,600 m running track test (V1600m; m.min(-1)) and in an incremental treadmill test for VO2max determination. Subsequently, the actual and the predicted [(0.177*V1600m) + 8.101] VO2max were compared to ACE genotypes.Results: The VO2max and V1600m recorded for DD, ID and II genotypes were 45.6 (1.8); 51.9 (0.8) and 54.4 (1.0) mL.kg(-1). min(-1) and 211.2 (8.3); 249.1 (4.3) and 258.6 (5.4) m.min(-1) respectively, and were significantly lower for DD carriers (p< 0.05). The actual and predicted VO2max did not differ from each other despite ACE genotype, but the agreement between actual and estimated VO2max methods was lower for the DD genotype.Conclusion: It was concluded that there is a possible association between ACE genotype, cardiovascular fitness and middle-distance running performance of moderately active young males and that the accuracy of VO2max prediction may also depend on the ACE genotype of the participants.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES

Neuromuscular electrical stimulation in critically ill traumatic brain injury patients attenuates muscle atrophy, neurophysiological disorders, and weakness: a randomized controlled trial

International audienceBackground Critically ill traumatic brain injury (TBI) patients experience extensive muscle damage during their stay in the intensive care unit. Neuromuscular electrical stimulation (NMES) has been considered a promising treatment to reduce the functional and clinical impacts of this. However, the time needed for NMES to produce effects over the muscles is still unclear. This study primarily aimed to assess the time needed and effects of an NMES protocol on muscle architecture, neuromuscular electrophysiological disorder (NED), and muscle strength, and secondarily, to evaluate the effects on plasma systemic inflammation, catabolic responses, and clinical outcomes. Methods We performed a randomized clinical trial in critically ill TBI patients. The control group received only conventional physiotherapy, while the NMES group additionally underwent daily NMES for 14 days in the lower limb muscles. Participants were assessed at baseline and on days 3, 7, and 14 of their stay in the intensive care unit. The primary outcomes were assessed with muscle ultrasound, neuromuscular electrophysiology, and evoked peak force, and the secondary outcomes with plasma cytokines, matrix metalloproteinases, and clinical outcomes. Results Sixty participants were randomized, and twenty completed the trial from each group. After 14 days, the control group presented a significant reduction in muscle thickness of tibialis anterior and rectus femoris, mean of - 0.33 mm (- 14%) and - 0.49 mm (- 21%), p < 0.0001, respectively, while muscle thickness was preserved in the NMES group. The control group presented a higher incidence of NED: 47% vs. 0% in the NMES group, p < 0.0001, risk ratio of 16, and the NMES group demonstrated an increase in the evoked peak force (2.34 kg/f, p < 0.0001), in contrast to the control group (- 1.55 kg/f, p < 0.0001). The time needed for the NMES protocol to prevent muscle architecture disorders and treat weakness was at least 7 days, and 14 days to treat NED. The secondary outcomes exhibited less precise results, with confidence intervals that spanned worthwhile or trivial effects. Conclusions NMES applied daily for fourteen consecutive days reduced muscle atrophy, the incidence of NED, and muscle weakness in critically ill TBI patients. At least 7 days of NMES were required to elicit the first significant results

Acupuncture Treatment in Elderly People with Sarcopenia: Effects on the Strength and Inflammatory Mediators

Introduction. Sarcopenia is defined as the progressive loss of skeletal muscle mass, associated with aging. A multidisciplinary approach has been increasingly prioritized in elderly care. A technique that has been widely used by the seniors is acupuncture. Objectives. To analyse the effects of acupuncture in muscle strength and in inflammatory markers of older people with sarcopenia. Methods. The sample was composed by 53 elderly people, aged over 60 years. Inclusion criteria were as follows: male and female seniors, sedentary and who were not under acupuncture treatment during the survey period. Assessment of body composition, handgrip strength, and functional test and IL-6, IL-10, and TNF-α cytokines analyses were performed. After verification of the physical examination, the subjects were divided into two groups (sarcopenic and nonsarcopenic). The first group was then randomized (by drawing lot) to be further divided into two subgroups: G1, composed of sarcopenic elderly people who received acupuncture intervention, and G2, composed of sarcopenic elderly people who did not receive intervention. The nonsarcopenic elderly people composed the group 3 (G3) and did not receive acupuncture intervention. ANOVA Split Plot was performed for intergroup comparison. For intragroup evaluation, ANOVA was conducted for repeated measures. For the delta values, ANCOVA was performed with the pretest as covariant. A p<0.05 significance level was adopted. Results. 26 older people concluded the collections. There was no statistically significant difference between the G1 group and the other ones regarding the assessed variables (muscle mass, muscle strength, functionality, and inflammatory markers). Conclusion. The results allow us to infer that it is possible that the conducted intervention protocol has not produced any significant effects in the studied population. UTN number: RBR-8df2h4

Sarcopenia in sedentary elderly and relation with functionality and inflammatory markers (IL-6 and IL-10)

INTRODUCTION: Sarcopenia is progressive loss of skeletal muscle mass related to aging. A sedentary lifestyle is a major factor related to the imbalance between synthesis and protein degradation, especially in the elderly. OBJECTIVE: To investigate the prevalence of sarcopenia in a group of sedentary elderly and its relationship to physical strength and inflammatory markers. METHODS: were conducted in 53 elderly collection of anthropometric data, assessment of body composition, functional test (Timed Up and Go), test of strength (grip) and collecting blood sample for evaluation of inflammatory markers. RESULTS: The prevalence of sarcopenia in the sample was 50% men and 54% among women. The average age was 71.3 years old in sarcopenia group and 66.4 years in non sarcopenia group (p = 0.015). There was no statistically significant difference between the values found for IL-6 (p = 0.70) and IL-10 (p = 0.14). CONCLUSION: There was a high prevalence of sarcopenia in sedentary elderly and muscle mass loss was associated with loss of muscle strength in men and women. There was no association with inflammatory markers IL-6 and IL-10.</p

Evaluation of Interleukin-10 (IL-10), osteoprotegerin (OPG), interleukin-6 (IL-6) and interleukin-12 (IL-12) concentrations before and after the training program (mean ± SD).

<p>*Statistically significant (p≤0.05).</p><p>Evaluation of Interleukin-10 (IL-10), osteoprotegerin (OPG), interleukin-6 (IL-6) and interleukin-12 (IL-12) concentrations before and after the training program (mean ± SD).</p

Flow-chart of the participants.

<p>Flow-chart of the participants.</p