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Aerobic exercise training induces metabolic benefits in rats with metabolic syndrome independent of dietary changes

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Aerobic exercise training induces metabolic benefits in rats with metabolic syndrome independent of dietary changes

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Título Aerobic exercise training induces metabolic benefits in rats with metabolic syndrome independent of dietary changes
Autor Caponi, Paula Wesendonck
Lehnen, Alexandre Machado
Pinto, Graziela Hünning
Borges, Julia
Markoski, Melissa Medeiros
Machado, Ubiratan Fabres
Schaan, Beatriz D'Agord
Abstract OBJECTIVES: We evaluated the effects of aerobic exercise training without dietary changes on cardiovascular and metabolic variables and on the expression of glucose transporter Type 4 in rats with metabolic syndrome. METHODS: Twenty male spontaneously hypertensive rats received monosodium glutamate during the neonatal period. The animals were allocated to the following groups: MS (sedentary metabolic syndrome), MS-T (trained on a treadmill for 1 hour/day, 5 days/week for 10 weeks), H (sedentary spontaneously hypertensive rats) and H-T (trained spontaneously hypertensive rats). The Lee index, blood pressure (tail-cuff system), insulin sensitivity (insulin tolerance test) and functional capacity were evaluated before and after 10 weeks of training. Glucose transporter Type 4 expression was analyzed using Western blotting. The datawere compared using analysis of variance (ANOVA) (p,0.05). RESULTS: At baseline, the MS rats exhibited lower insulin sensitivity and increased Lee index comparedwith the H rats. Training decreased the body weight and Lee index of the MS rats (MS-T vs. MS), but not of the H rats (H-T vs. H). There were no differences in food intake between the groups. At the end of the experiments, the systolic blood pressure was lower in the two trained groups than in their sedentary controls. Whole-body insulin sensitivity increased in the trained groups. Glucose transporter Type 4 content increased in the heart, white adipose tissue and gastrocnemius muscle of the trained groups relative to their respective untrained groups. CONCLUSION: In conclusion, the present study shows that an isolated aerobic exercise training intervention is an efficient means of improving several components of metabolic syndrome, that is, training reduces obesity and hypertension and increases insulin sensitivity.
Contido em Clinics. São Paulo. Vol. 68, n. 7 (2013), p. 1010-1017
Assunto Exercício
Obesidade
Síndrome X metabólica
Transportador de glucose tipo 4
[en] Exercise training
[en] Glucose transporter type 4
[en] Metabolic syndrome X
[en] Obesity
Origem Nacional
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/108693
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