RESUMEN
The study aimed to investigate the effect of intradialytic exercise training programmes on the submaximal functional capacity of patients with kidney failure. We searched for randomized clinical trials that assessed submaximal functional capacity using the 6-min walk test (6 MWT) in adult patients on maintenance haemodialysis submitted to intradialytic physical training. The search was performed on 15 October 2021, in different databases. Random-effect, multivariate meta-regression adjusted for multiplicity were performed to examine the relationship between exercise effect and covariates. Intradialytic physical exercise induced greater changes in 6MWT distance (k = 18; n = 1,458; WMD: 37.0; 95% CI 29.3; 50.6 metres) than control groups, with substantial heterogeneity (I2 = 78.3%). Aerobic, strength, and combined exercise promoted an average increase of 48.7 (95%CI 30.9; 66.4 metres), 16.9 (95%CI 7.6; 26.3 metres), and 75.8 (95%CI 55.1; 96.6 metres) metres, respectively. Strength training resulted in inferior gains in 6MWT distance compared to aerobic training (WMD: -25.0; 95%CI: -49.1; -0.9). Intervention length shorter than 11 weeks (WMD: 37.0; 95%CI: -5.4; 79.3 metres) did not induce greater changes in 6MWT compared to control groups. There was a positive response in submaximal functional capacity to intradialytic training in kidney failure patients on maintenance haemodialysis.
RESUMEN
Abstract Intense physical activity can increase oxidative stress and muscle damage in, causing fatigue and injury. Graduated compression stockings (GCS) can decrease these deleterious effects. The aim was to determine the acute effects of GCS on muscle damage and oxidative stress (OS) in garbage collectors. Thirteen garbage collectors, 25.4±5.2 years, participated using GCS or placebo stockings. Blood samples were collected at pre and post a working day and after 16 hours of rest. Markers of OS and muscle damage were evaluated. Two-way ANOVA (two conditions and two moments) was used for the analysis of the outcomes No significant differences were found for creatine kinase, catalase and glutathione peroxidase between the time and groups. There was a significant difference for the total thiol content and superoxide dismutase only in the control group (pre and post, p = 0.004). The use of GCS exerted acute protection against the increase of markers of OS, but did not contribute to attenuate muscle damage.
Resumo Atividade física intensa pode aumentar o estresse oxidativo e danos musculares, causando fadiga e lesões. As meias de compressão graduada (MCG) podem diminuir esses efeitos deletérios. O objetivo foi determinar os efeitos agudos da MCG no dano muscular e estresse oxidativo (EO) em coletores de lixo. Treze coletores de lixo, 25,4 ± 5,2 anos, participaram usando MCG ou placebo. As amostras de sangue foram coletadas antes e após um dia útil e após 16 horas de descanso. Marcadores de EO e dano muscular foram avaliados. ANOVA de duas vias (duas condições e dois momentos) foi usada para á análise dos resultados. Não foram encontradas diferenças significativas para creatina quinase, catalase e glutationa peroxidase entre o tempo e os grupos. Houve uma diferença significativa para o conteúdo total tiólico e superóxido dismutase apenas no grupo controle (pré e pós, p = 0,004). O uso de MCG exerceu proteção aguda contra o aumento de marcadores de EO, mas não contribuiu para atenuar danos musculares