Document Detail

Continuous glucose monitoring reveals delayed nocturnal hypoglycemia after intermittent high-intensity exercise in nontrained patients with type 1 diabetes.
MedLine Citation:
PMID:  20807120     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: Exercise is a cornerstone of diabetes therapy in type 1 diabetes mellitus (DMT1) patients. The type of exercise is important in determining the propensity to hypoglycemia. We assessed, by continuous glucose monitoring (CGM), the glucose profiles during and in the following 20h after a session of two different types of exercise.
RESEARCH DESIGN AND METHODS: Eight male volunteers with well-controlled DMT1 were studied. They underwent 30min of both intermittent high-intensity exercise (IHE) and moderate-intensity exercise (MOD) in random order. Expired air was recorded during exercise, while metabolic and hormonal determinations were performed before and for 120 min after exercises. The CGM system and activity monitor were applied for the subsequent 20h.
RESULTS: Blood glucose level declined during both type of exercise. At 150 min following the start of exercise, plasma glucose content was slightly higher after IHE. No changes were observed in plasma insulin concentration. A significant increase of norepinephrine concentration was noticed during IHE. Between midnight and 6:00 a.m. the glucose levels were significantly lower after IHE than those observed after MOD (area under the curve, 23.3 ± 3 vs. 16 ± 3 mg/dL/420 min [P = 0.04]; mean glycemia at 3 a.m., 225 ± 31 vs. 147 ± 17 mg/dL [P<0.05]). The number of hypoglycemic episodes after IHE was higher than that observed after MOD (seven vs. two [P<0.05]).
CONCLUSIONS: We demonstrate that (1) CGM is a useful approach in DMT1 patients who undergo an exercise program and (2) IHE is associated with delayed nocturnal hypoglycemia.
Alberto Maran; Paola Pavan; Barbara Bonsembiante; Erica Brugin; Andrea Ermolao; Angelo Avogaro; Marco Zaccaria
Publication Detail:
Type:  Clinical Trial; Journal Article; Randomized Controlled Trial    
Journal Detail:
Title:  Diabetes technology & therapeutics     Volume:  12     ISSN:  1557-8593     ISO Abbreviation:  Diabetes Technol. Ther.     Publication Date:  2010 Oct 
Date Detail:
Created Date:  2010-10-06     Completed Date:  2011-02-01     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100889084     Medline TA:  Diabetes Technol Ther     Country:  United States    
Other Details:
Languages:  eng     Pagination:  763-8     Citation Subset:  IM    
Department of Clinical and Experimental Medicine, University of Padova Medical School, Padova, Italy.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Blood Glucose / analysis*
Cross-Over Studies
Diabetes Mellitus, Type 1 / blood*,  drug therapy
Energy Metabolism / physiology
Heart Rate / physiology
Hypoglycemia / blood*,  epidemiology*
Hypoglycemic Agents / blood,  therapeutic use
Insulin / blood,  therapeutic use
Lactic Acid / blood
Monitoring, Ambulatory*
Norepinephrine / blood
Oxygen Consumption / physiology
Time Factors
Reg. No./Substance:
0/Blood Glucose; 0/Hypoglycemic Agents; 11061-68-0/Insulin; 50-21-5/Lactic Acid; 51-41-2/Norepinephrine

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Effective intervention or child's play? A review of video games for diabetes education.
Next Document:  JAVMA News.