Leisure Time Physical Activity Is Associated With Poor Glycemic Control in Type 1 Diabetic Women
- 1 April 2005
- journal article
- research article
- Published by American Diabetes Association in Diabetes Care
- Vol. 28 (4), 777-782
- https://doi.org/10.2337/diacare.28.4.777
Abstract
OBJECTIVE—We studied the association between leisure time physical activity (LTPA) and glycemic control, insulin dose, and estimated glucose disposal rate (eGDR) in type 1 diabetes. RESEARCH DESIGN AND METHODS—This is a cross-sectional study of 1,030 type 1 diabetic patients participating in the Finnish Diabetic Nephropathy Study, a nationwide multicenter study. LTPA was assessed by a validated 12-month questionnaire and expressed in metabolic equivalent (MET) units. Patients were grouped as sedentary (LTPA 40 MET h/week, n = 215). Outcome measures were HbA1c, insulin dose, and eGDR (estimate of insulin sensitivity based on waist-to-hip ratio, hypertension, and HbA1c). RESULTS—LTPA correlated with HbA1c in women (r = −0.12, P = 0.007) but not in men (r = −0.03, P = 0.592). Sedentary women had higher HbA1c than moderately active and active women: 8.8 ± 1.4% vs. 8.3 ± 1.4% vs. 8.3 ± 1.4% (P = 0.004), whereas HbA1c in men was 8.4 ± 1.3% vs. 8.2 ± 1.4% vs. 8.2 ± 1.3% (P = 0.774), respectively. In men, insulin doses were 0.74 ± 0.21 vs. 0.71 ± 0.20 vs. 0.68 ± 0.23 IU · kg–1 · 24 h–1 (P = 0.003). In both sexes, sedentary patients had lower eGDRs than active patients [median (interquartile range) 5.5 (4.0–8.2) vs. 6.8 (4.7–8.8) vs. 6.7 (4.6–8.6) mg · kg–1 · min–1; P < 0.01 for sedentary vs. others]. Age, obesity, smoking, insulin dose, social class, diabetic nephropathy, or cardiovascular disease did not explain the results. CONCLUSIONS—Low levels of LTPA were associated with poor glycemic control in type 1 diabetic women. Men seem to use less insulin when physically active. Increased LTPA levels were associated with increased estimated insulin sensitivity. Longitudinal studies are needed to further clarify the effects of LTPA on type 1 diabetes.Keywords
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