Preoperative respiratory muscle training reduces the risk of pulmonary complications and the length of hospital stay after cardiac surgery: a systematic review.

QUESTIONS: What is the effect of preoperative respiratory muscle training (RMT) on the incidence of postoperative pulmonary complications (PPCs) after open cardiac surgery? What is the effect of RMT on the duration of mechanical ventilation, postoperative length of stay and respiratory muscle strength? DESIGN: Systematic review of randomised trials with meta-analysis. PARTICIPANTS: Adults undergoing elective open cardiac surgery. INTERVENTION: The experimental groups received preoperative RMT and the comparison groups received no intervention. OUTCOME MEASURES: The primary outcomes were PPCs, length of hospital stay, respiratory muscle strength, oxygenation and duration of mechanical ventilation. The methodological quality of studies was assessed using the PEDro scale and the overall certainty of the evidence was assessed using the GRADE approach. RESULTS: Eight trials involving 696 participants were included. Compared with the control group, the respiratory training group had fewer PPCs (RR 0.51, 95% CI 0.38 to 0.70), less pneumonia (RR 0.44, 95% CI 0.25 to 0.78), shorter hospital stay (MD -1.7 days, 95% CI -2.4 to -1.1) and higher maximal inspiratory pressure values at the end of the training protocol (MD 12 cmH2O, 95% CI 8 to 16). The mechanical ventilation time was similar in both groups. The quality of evidence was high for pneumonia, length of hospital stay and maximal inspiratory pressure. CONCLUSION: Preoperative RMT reduced the risk of PPCs and pneumonia after cardiac surgery. The training also improved the maximal inspiratory pressure and reduced hospital stay. The effects on PPCs were large enough to warrant use of RMT in this population. REGISTRATION: CRD42021227779.

Photobiomodulation Therapy at 808 nm Does Not Improve Biceps Brachii Performance to Exhaustion and Delayed-Onset Muscle Soreness in Young Adult Women: A Randomized, Controlled, Crossover Trial.

OBJECTIVE: This study aims to investigate the effects of laser photobiomodulation (PBM) at 808 nm on biceps brachii performance to exhaustion, rating of perceived exertion (RPE), and delayed onset muscle soreness (DOMS) in untrained young women. METHODS: Thirteen young women (20.1 ± 2.9 years) participated in a crossover study in which they received, in a counterbalanced manner, active and placebo laser PBM on two occasions (T1 and T2), separated by a 7-day washout period. During T1 and T2, participants received active (100 mW output power, irradiance of 35.7 W cm-2, and total energy of 28 J/arm) or placebo laser irradiation on the biceps brachii muscle at 20 min before the repetitions-to-failure test [six sets at 60% of one-repetition maximum (1RM) until failure] for elbow flexion exercise. The number of repetitions performed and RPE over the six sets, as well as DOMS from basal up to 72 h after the repetitions-to-failure test, were recorded. RESULTS: There was a significant (time, p < 0.05) reduction in the number of repetitions performed and an increase in RPE over six sets, with no statistical differences between placebo and active laser conditions (treatment × time, p > 0.05). DOMS increased at 24 h postexercise and progressively returned to baseline after 72 h in both conditions (time, p < 0.05; treatment × time, p > 0.05). CONCLUSION: Our results indicate that acute laser PBM at 808 nm does not improve biceps brachii performance to exhaustion, RPE, and DOMS in untrained women.

High final energy of gallium arsenide laser increases MyoD gene expression during the intermediate phase of muscle regeneration after cryoinjury in rats.

The aim of this study was to determine the effects of gallium arsenide (GaAs) laser on IGF-I, MyoD, MAFbx, and TNF-α gene expression during the intermediate phase of muscle regeneration after cryoinjury 21 Wistar rats were divided into three groups (n = 7 per group): untreated with no injury (control group), cryoinjury without GaAs (injured group), and cryoinjury with GaAs (GaAs-injured group). The cryoinjury was induced in the central region of the tibialis anterior muscle (TA). The region injured was irradiated once a day during 14 days using GaAs laser (904 nm; spot size 0.035 cm2, output power 50 mW; energy density 69 J cm-2; exposure time 4 s per point; final energy 4.8 J). Twenty-four hours after the last application, the right and left TA muscles were collected for histological (collagen content) and molecular (gene expression of IGF-I, MyoD, MAFbx, and TNF-α) analyses, respectively. Data were analyzed using one-way ANOVA at P < 0.05. There were no significant (P > 0.05) differences in collagen density and IGF-I gene expression in all experimental groups. There were similar (P < 0.05) decreases in MAFbx and TNF-α gene expression in the injured and GaAs-injured groups, compared to control group. The MyoD gene expression increased (P = 0.008) in the GaAs-injured group, but not in the injured group (P = 0.338), compared to control group. GaAs laser therapy had a positive effect on MyoD gene expression, but not IGF-I, MAFbx, and TNF-α, during intermediary phases (14 days post-injury) of muscle repair.

Free leucine supplementation during an 8-week resistance training program does not increase muscle mass and strength in untrained young adult subjects.

The purpose of this study was to examine the effects of free leucine supplementation on changes in skeletal muscle mass and strength during a resistance training (RT) program in previously untrained, young subjects. In a double-blind, randomized, placebo-controlled study, 20 healthy young (22 ± 2 years) participants were assigned to two groups: a placebo-supplement group (PLA, N = 10) or a leucine-supplement group (LEU, N = 10). Both groups underwent an 8-week hypertrophic RT program (2 days/week), consuming an equivalent amount of leucine (3.0 g/day in a single post-training dose) or placebo (cornstarch). Quadriceps muscle strength, cross-sectional area (CSA) of the vastus lateralis (VL), and rectus femoris (RF), as well as the habitual dietary intake were assessed before and after the 8-week intervention period. There was a similar improvement in muscle strength (Leg press, LEU: +33% vs. PLA: +37%; P > 0.05, and knee extension, LEU: +31% vs. PLA: 34%; P > 0.05) and CSA (VL, LEU: 8.9% vs. PLA: 9.6%; P > 0.05, and RF, LEU: +21.6% vs. PLA: + 16.4%; P > 0.05) in the both groups from pre- to post-training. In addition, there was no significant (P > 0.05) difference in daily dietary intake between the LEU and PLA groups before and after the intervention period. Free leucine supplementation (3.0 g/day post-training) does not increase muscle strength or CSA during RT in healthy young subjects consuming adequate dietary protein intake.

Effectiveness of Russian current in bone regeneration process in rats / Efetividade da corrente russa no processo de regeneração óssea em ratos

Abstract Introduction: Russian current is an electric current of average frequency that is able to restore the properties of skeletal muscle at a low treatment cost. It is essential to know the effects of Russian current in bone tissue, since electromagnetic energy could be an efficient and low cost method to treat bone disorders. Objective: The aim of the study was to evaluate the effectiveness of Russian current in the consolidation of tibia fracture in adult rats. Methods: 24 adult male Albinus Wistar rats wereused. The animals were divided randomly into two groups: control group (CG), composed of 12 animals, and Intervention Group (IG) consisting of 12 animals, both groups were submitted to osteotomy (proximal medial surface of the tibia). The IG underwent an electrical stimulation protocol with Russian current, while the CG did not undergo any kind of intervention. Euthanasia was performed in three animals of each group on the following days: 5, 10, 20, and 30 days of treatment. Results: The results suggested higher primary ossification, intense osteogenic activity, and increased thickness of the periosteum, characterizing more advanced ossification and a greater presence of trabecular bone marrow in rats in the group subjected to the treatment. In this way, we can assign one more beneficial effect to interventions with Russian current, for the treatment of postfracture rehabilitation. Conclusion: In both groups the bone tissue repair process occurred, but in the electrically stimulated group the osteogenesis process was more advanced.

Resumo Introdução: A corrente russa é uma corrente elétrica de média frequência que é capaz de restabelecer as propriedades do músculo esquelético a baixo custo de tratamento. É imprescindível conhecer os efeitos da corrente russa no tecido ósseo, visto que a energia eletromagnética pode ser uma forma eficiente e de menor custo para tratar alterações ósseas. Objetivo: Avaliar a eficácia da corrente russa na consolidação de fratura experimental de tíbia em ratos adultos. Métodos: Foram utilizados 24 ratos machos adultos Albinus Wistar. Os animais foram distribuídos de forma randomizada em dois grupos: Grupo Controle (GC), composto por 12 animais e Grupo Intervenção (GI) compostos por 12 animais, ambos os sofreram osteotomia (face medial proximal da tíbia). O GI foi submetido a um protocolo de eletroestimulação com corrente russa, enquanto o GC não sofreu nenhum tipo de intervenção. Foi realizada a eutanásia de três animais de cada grupo nos seguintes períodos: 5°, 10°, 20° e 30° dia de tratamento. Resultados: Os resultados sugeriram maior ossificação primária, intensa atividade osteogênica e aumento da espessura de periósteo, caracterizando assim uma ossificação mais avançada com maior presença de trabéculas na medula óssea no grupo de ratos submetidos ao tratamento. Desta forma, pode-se atribuir mais um efeito benéfico nas intervenções com corrente russa, para o tratamento de reabilitação pós-fratura. Conclusão: Em ambos os grupos analisados ocorreu processo de reparação tecidual ósseo, porém no grupo eletroestimulado o processo de osteogênese foi mais avançado.

Incontinência urinária na paralisia cerebral: eficácia da TENS no nervo tibial posterior em mulheres adultas / Urinary incontinence in cerebral palsy: efficacy os TENS in the posterior tibial nerve in adult women

Introdução: A Paralisia Cerebral (PC) pode estar associada á incontinência urinária (IU), que pode ser decorrente de alterações neurológicas. Objetivo: Avaliar eficácia da eletroestimulação transcutânea (TENS) do nervo tibial posterior na qualidade de vida de mulheres com IU e PC. Método: Relato de caso co m duas mulheres (28 e 36 anos). Avaliado o tipo de disfunção urinária e questionário King's Health Questionnaire (KHQ). Realizadas 20 sessões de eletroestimulação com frequência de 60 Hz, largura de pulso 200 µs, frequência da corrente de 01 Hz. A intensidade foi estabelecida de acordo com cada paciente. Resultados: Ambas diminuíram o número de idas ao banheiro e trocas dos forros. No KHQ, a paciente 1 melhorou nos domínios impacto da incontinência, limitação das tarefas, limitação física/social e medidas de segurança. Já a paciente 2, nos domínios limitações das tarefas, relações pessoais e sono/energia. Conclusão: A TENS melhorou a qualidade de vida destas mulheres.

Introduction: Cerebral Palsy (CP) may be associated with urinary incontinence (UI), which may be due to neurological disorders. Objective: To evaluate the effectiveness of transcutaneous electrical stimulation (TENS) of the posterior tibial nerve in women's quality of life with UI and CP. Method: Case report with two women (28 and 36 years). We evaluated the type of urinary dysfunction and King's Health Questionnaire (KHQ). We held 20 sessions of electrostimulation with a frequency of 60 Hz, pulse width 200µs, frequency of 01 Hz current. The intensity was set according to each patient. Results: Both reduced the number of bathroom visits and exchanges of liners. In KHQ, the patient 1 improved in domains: impact of incontinence, limitation of tasks, physical / social limitation and security measures. Patient 2, in the domains of tasks limitations, personal relationships and sleep / energy. Conclusion: TENS improved the quality of life of these women.

Níveis de ansiedade e depressão em gestantes submetidas a um programa de hidroterapia / Levels of anxiety and depression in pregnant women submitted to a hydrotherapy program

Introdução: Poucos estudos demonstram a ação da hidroterapia no comportamento da ansiedade e depressão em gestantes. Objetivo: Avaliar o efeito da hidroterapia sobre o nível de depressão e ansiedade, além de investigar possíveis associações destes sintomas com perfil sociodemográfico de gestantes. Métodos: Realizou-se avaliação inicial em 19 gestantes, com média de idade de 28,37±4,56 anos, e aplicou-se questionário sobre os níveis de ansiedade e depressão antes e após protocolo de hidroterapia de oito semanas. Resultados: Constatou-se predominância de mulheres casadas (63,15%), no terceiro trimestre gestacional (97,7%), com nível educacional elevado (52,63%). Não houve alterações nos níveis de ansiedade e depressão após intervenção de hidroterapia. Não foram encontradas associações entre perfil sociodemográfico e níveis de ansiedade e depressão. Conclusões: Não houve alterações nos sintomas de ansiedade e depressão das gestantes submetidas à hidroterapia. Além disso, não foram observadas associações entre características sociodemográficas e sintomas de ansiedade e depressão nessa população.

Introduction: Few studies have demonstrated the action of hydrotherapy in the behavior of anxiety and depression in pregnant women. Objective: To evaluate the effect of hydrotherapy on the levels of depression and anxiety; and to investigate possible associations of these symptoms with socio-demographic profile of pregnant women. Methods: An initial assessment was carried out, and also questionnaires about the levels of anxiety and depression before and after eight weeks of hydrotherapy protocol. Results: We evaluated 19 pregnant women who had a mean age of 28.37 ± 4.56 years. It was found a predominance of married women (63.15%) in the third trimester (97.7%), with high educational level (52.63%). There were no changes in the levels of anxiety and depression after hydrotherapy intervention. There were no associations between socio-demographic profile and levels of anxiety and depression. Conclusions: There were no changes in symptoms of anxiety and depression of pregnant women undergoing hydrotherapy. In addition, there were no associations between socio-demographic characteristics and symptoms of anxiety and depression.

Análise da prevalência de sobrepeso e obesidade e do nível de atividade física em crianças e adolescentes de uma cidade do sudoeste de São Paulo / Analisys of the prevalence of overweight and obesity and the level of physical activity in children and adolescents of a southwestern city of São Paulo

Este estudo teve como objetivo verificar a prevalência de sobrepeso, obesidade e o nível de atividade física segundo o sexo de crianças e adolescentes de escolas públicas da cidade de Nantes, São Paulo, Brasil. A amostra foi composta de 170 crianças e 232 adolescentes com a idade média de 8,04±1,31 e 13,2±1,83 anos, respectivamente, de ambos os sexos e frequentadores de duas escolas. Foram coletadas as medidas antropométricas: Índice de massa corpórea pela idade (IMC/idade) e circunferência abdominal. O IMC/idade foi classificado de acordo com o Sistema de Vigilância Alimentar e Nutricional (SISVAN) (2007) e um questionário modificado e adaptado sugerido por Silva (2009) foi utilizado para analisar o nível de atividade física. O teste t não pareado foi realizado e os valores de p<0,05 foram considerados significativos. A prevalência de 30,59 por cento dos indivíduos com sobrepeso ou obesidade, foi verificada sendo a maioria desta adolescente. Também foi encontrada maior média e com diferença significativa do valor da circunferência abdominal no sexo feminino no grupo das crianças. Foi observado que 62,68 por cento da amostra são inativos ou inadequadamente ativos e que a maioria desses era do sexo feminino. Estes fatos demonstram considerável risco que estes indivíduos podem apresentar de complicações cardiovasculares e musculoesqueléticas no decorrer da vida. A importância da realização precoce de programas educacionais e nutricionais na escola deve ser enfatizada para prevenção e tratamento destes indivíduos com excesso de peso e baixo nível de atividade física.(AU)