| Registro completo |
| Provedor de dados: |
56
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| País: |
Brazil
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| Título: |
Effects of diet and exercise training on neurovascular control during mental stress in obese women
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| Autores: |
Tonacio,A.C.
Trombetta,I.C.
Rondon,M.U.P.B.
Batalha,L.T.
Kuniyoshi,F.H.S.
Laterza,M.C.
Suzuki,P.H.
Gowdak,M.M.G.
Barretto,A.C.P.
Halpern,A.
Villares,S.M.F.
Negrão,C.E.
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| Data: |
2006-01-01
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| Ano: |
2006
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| Palavras-chave: |
Vasodilation
Sympathetic nervous system
Weight loss
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| Resumo: |
Since neurovascular control is altered in obese subjects, we hypothesized that weight loss by diet (D) or diet plus exercise training (D + ET) would improve neurovascular control during mental stress in obese women. In a study with a dietary reduction of 600 kcal/day with or without exercise training for 4 months, 53 obese women were subdivided in D (N = 22, 33 ± 1 years, BMI 34 ± 1 kg/m²), D + ET (N = 22, 33 ± 1 years, BMI 33 ± 1 kg/m²), and nonadherent (NA, N = 9, 35 ± 2 years, BMI 33 ± 1 kg/m²) groups. Muscle sympathetic nerve activity (MSNA) was measured by microneurography and forearm blood flow by venous occlusion plethysmography. Mental stress was elicited by a 3-min Stroop color word test. Weight loss was similar between D and D + ET groups (87 ± 2 vs 79 ± 2 and 85 ± 2 vs 76 ± 2 kg, respectively, P < 0.05) with a significant reduction in MSNA during mental stress (58 ± 2 vs 50 ± 2, P = 0.0001, and 59 ± 3 vs 50 ± 2 bursts/100 beats, P = 0.0001, respectively), although the magnitude of the response was unchanged. Forearm vascular conductance during mental stress was significantly increased only in D + ET (2.74 ± 0.22 vs 3.52 ± 0.19 units, P = 0.02). Weight loss reduces MSNA during mental stress in obese women. The increase in forearm vascular conductance after weight loss provides convincing evidence for D + ET interventions as a nonpharmacologic therapy of human obesity.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2006000100006
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| Editor: |
Associação Brasileira de Divulgação Científica
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| Relação: |
10.1590/S0100-879X2006000100006
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| Formato: |
text/html
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| Fonte: |
Brazilian Journal of Medical and Biological Research v.39 n.1 2006
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| Direitos: |
info:eu-repo/semantics/openAccess
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