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  • 1
    ISSN: 1432-0428
    Keywords: Type 1 (insulin-dependent) diabetes ; maximal oxygen uptake ; exercise ; serum triglycerides ; serum cholesterol ; glycaemic control
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary No objective evidence has been presented to support the beneficial effect of physical training on glycaemic control in Type 1 (insulin-dependent) diabetic patients trained two to three times a week for several months. In the present study we examined the possibility that a daily exercise programme would be more suitable for improving glycaemic control. Thirteen patients completed a 5-month study; 6 were randomized to exercise training (20 min daily bicycle exercise) and 7 served as non-exercising controls. The training resulted in an 8% increase in maximal oxygen uptake (p 〈 0.05). No change in glycaemic control occurred during the study period in either group. In addition, serum lipid and lipoprotein levels were followed. Total cholesterol decreased during the study period irrespective of training. No effect was noted on the levels of LDL, VLDL, HDL and HDL2 cholesterol. A significant training effect was obtained in the HDL3 subfraction (−10%,p 〈 0.05). Total triglycerides were unchanged, but a decrease in the level of LDL triglycerides was observed with training (−12%,p 〈 0.01). It is concluded that, in female Type 1 diabetic patients, daily physical training for several months does not improve glycaemic control and results only in minor changes in serum lipoprotein profiles.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-0428
    Keywords: C-peptide ; insulin-dependent diabetes ; albuminuria ; proteinuria ; haemoglobin a1c
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The aim of the present study was to evaluate the role of residual insulin production in long-term Type 1 (insulin-dependent) diabetes mellitus. Ninety-seven patients with a disease duration of 9–16 years and onset before the age of 30 years were studied. C-peptide excretion in 24-h urine samples was measured as an indicator of residual insulin production. Thirty-five patients (36%) excreted C-peptide (〉-0.2 nmol); as many as possible of them were carefully matched with a non-excretor patient with regard to age at onset of diabetes and disease duration. Twenty-nine pairs were obtained, and 22 of them agreed to participate in further investigations of glycaemic control and microangiopathic lesions. The patients who excreted C-peptide had significantly lower HbA1c than the non-excretor group, 6.9±0.3% vs 7.9±0.3%, (p〈0.025). Moderate-to-advanced background retinopathy was found in 2 patients in the excretor group and in 7 patients in the nonexcretor group. Microalbuminuria [ratio of albumin: creatinine (mg/l:mmol/l) 〉-5] was found in 1 and in 5 patients, respectively, while proteinuria [ratio of protein: creatinine (mg/l: mmol/l× 10) 〉-136] was found in 0 and in 4 patients, respectively. Microalbuminuria and/or proteinuria was found in 7 of the non-excretor group as compared to 1 in the excretor group (p=0.046). When all the variables were taken into account, microalbuminuria and/or proteinuria and/or moderate-to-advanced background retinopathy was found in 3 of the excretor group compared to 11 of the non-excretor group (p=0.022). Reduced sensory and motor nerve conduction velocities were common findings and occurred with the same frequency in the two groups. The data suggest that residual insulin production in long-term Type 1 diabetes is associated with a more satisfactory glycaemic control and a lower prevalence of early microangiopathic eye and kidney lesions.
    Type of Medium: Electronic Resource
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