Objective. The positive effects of exercise on adiponectin and vitamin D have independently been reported. Recent studies have suggested that vitamin D increases adiponectin synthesis through inhibition of the rennin-angiotensin system in adipose tissue. However, studies evaluating the effects of an aerobic exercise on adiponectin and vitamin D simultaneously investigating the potential mechanism of vitamin D-dependent adiponectin pathways in patients with type 2 diabetes mellitus (T2DM) are still limited. This study was undertaken to examine the effects of aerobic exercise on adiponectin and its association with vitamin D in patients with T2DM. Methods. Total twenty-two patients with T2DM were randomly divided into intervention and control group. The intervention group underwent a moderate intensity of a walking mode treadmill aerobic exercise for four weeks. The exercise protocol was adapted from modified Bruce test with a periodic speed and inclination increase. In both groups, body mass index (BMI), vitamin D, and adiponectin levels, were measured before and after four weeks of the lasting program. Results. The mean of the increased adiponectin and vitamin D levels after exercise was significantly higher in the intervened than the control group, but statistically significant difference was only found in the adiponectin effect (p=0.017). There was a significant association found between vitamin D and adiponectin in the intervention group after data adjustments to age and BMI (p=0.005). Conclusion. Moderate intensity of treadmill exercise with increased speed and inclination periodically increased adiponectin level in patients with T2DM. The increased adiponectin might potentially be mediated by increased vitamin D, but the level of their association impact was dependent on the age and BMI.
Introduction: Adiponectin plays a significant role in the metabolic system in proinflammatory cytokine inhibition and glucose uptake utilization. The treadmill is an aerobic walking device that stimulates natural walking features. Exercises increase adiponectin levels leading to improvement in insulin sensitivity. Objectives: To analyze the effect of aerobic exercise using a moderate-intensity treadmill with a gradual increase in speed and inclination on adiponectin levels in men with type 2 diabetes mellitus (T2DM). Methods: Twenty-two participants with T2DM were randomized into treadmill exercise and control groups. The experimental group underwent 30-minute sessions of moderate-intensity treadmill exercise with increasing speed and gradual inclination three times a week for four weeks. The control group underwent individual exercise for 150 minutes per week. Participants were assessed for clinical and laboratory parameters before and after the four-week program. Results: There was a significant increase in the adiponectin level from 456.3 ± 42 pg/ml to 586.3 ± 87.8 pg/ml (p=0.04, p<0.05) in the treadmill exercise group. In the control group, adiponectin only increased from 466.7 ± 85 pg/ml to 471.8 ± 59 pg/ml (p=0.646). Conclusions: Moderate-intensity treadmill with increasing speed and gradual inclination was found to lead to a significantly better outcome in improving adiponectin levels than standard individual physical exercise in managing T2DM. Level of evidence II; Therapeutic studies – Investigation of the treatment results.
RESUMO Introdução: A adiponectina desempenha um papel significativo no sistema metabólico na inibição da citocina pró-inflamatória e na utilização da captação de glicose. A esteira é um aparelho de caminhada aeróbica que estimula as características da caminhada natural. Os exercícios aumentam o nível de adiponectina, resultando na melhora da sensibilidade à insulina. Objetivos: Analisar o efeito de exercícios aeróbicos em uma esteira de intensidade moderada com um aumento gradual de velocidade e inclinação sobre os níveis de adiponectina em homens com diabetes mellitus tipo 2 (DMT2). Método: Vinte e dois participantes com DMT2 foram randomizados para grupos de exercício em esteira e controle. O grupo experimental realizou sessões de 30 minutos de exercício em esteira de intensidade moderada com velocidade crescente e inclinação gradual três vezes por semana durante quatro semanas. O grupo de controle se submeteu a exercício individual durante 150 minutos por semana. Os participantes foram avaliados em relação aos parâmetros clínicos e laboratoriais antes e após o programa de quatro semanas. Resultados: Houve um aumento significativo no nível de adiponectina de 456,3 ± 42 pg/ml para 586,3 ± 87,8 pg/ml (p=0,04, p<0,05) no grupo de exercício em esteira. No grupo de controle, a adiponectina apresentou um pequeno aumento de 466,7 ± 85 pg/ml para 471,8 ± 59 pg/ml (p=0,646). Conclusão: Descobriu-se que exercícios na esteira de intensidade moderada com velocidade crescente e inclinação gradual conduzem a um resultado significativamente superior na melhora dos níveis de adiponectina em relação a exercícios físicos individuais padrão ao tratar o DMT2. Nível de evidência II; Estudos terapêuticos – Investigação de resultados do tratamento.
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