PMID- 32998989 OWN - NLM STAT- MEDLINE DCOM- 20210528 LR - 20210528 IS - 1935-5548 (Electronic) IS - 0149-5992 (Linking) VI - 43 IP - 12 DP - 2020 Dec TI - Lower Daily Carbohydrate Intake Is Associated With Improved Glycemic Control in Adults With Type 1 Diabetes Using a Hybrid Closed-Loop System. PG - 3102-3105 LID - 10.2337/dc20-1560 [doi] AB - OBJECTIVE: To assess the association between daily carbohydrate (CHO) intake and glycemic control in adult hybrid closed-loop (HCL) users with type 1 diabetes (T1D). RESEARCH DESIGN AND METHODS: Mean individual daily CHO intake (MIDC) and relative deviation from MIDC (120% high CHO consumption) were compared with parameters of glycemic control assessed by continuous glucose monitoring. RESULTS: Records from 36 patients (26 male, 10 female; age 36.9 +/- 13.5 years; HbA(1c) 7.1 +/- 0.9% [54 +/- 10 mmol/mol]) provided 810 days of data (22.5 +/- 6.7 days per patient). Time in range (70-180 mg/dL) for low, medium, and high CHO consumption was 77.4 +/- 15.4%, 75.2 +/- 16.7%, and 70.4 +/- 17.8%, respectively (P < 0.001). Time above range (>180 mg/dL) was 20.1 +/- 14.7%, 22.0 +/- 16.9%, and 27.2 +/- 18.4%, respectively (P < 0.001). There was no between-group difference for time in hypoglycemia (<70 mg/dL; P = 0.50). CONCLUSIONS: Daily CHO intake was inversely associated with glycemic control in adults with T1D using an HCL system. Lower CHO intake may be a strategy to optimize glucose control in HCL users. CI - (c) 2020 by the American Diabetes Association. FAU - Lehmann, Vera AU - Lehmann V AD - Department of Diabetes, Endocrinology, Nutritional Medicine and Metabolism, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland. FAU - Zueger, Thomas AU - Zueger T AD - Department of Diabetes, Endocrinology, Nutritional Medicine and Metabolism, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland. AD - Department of Management, Technology, and Economics, ETH Zurich, Zurich, Switzerland. FAU - Zeder, Anna AU - Zeder A AD - Department of Diabetes, Endocrinology, Nutritional Medicine and Metabolism, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland. FAU - Scott, Sam AU - Scott S AUID- ORCID: 0000-0003-2342-9865 AD - Department of Diabetes, Endocrinology, Nutritional Medicine and Metabolism, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland. AD - Team Novo Nordisk Professional Cycling Team, Atlanta, GA. FAU - Bally, Lia AU - Bally L AUID- ORCID: 0000-0003-1993-7672 AD - Department of Diabetes, Endocrinology, Nutritional Medicine and Metabolism, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland. FAU - Laimer, Markus AU - Laimer M AUID- ORCID: 0000-0002-7622-0822 AD - Department of Diabetes, Endocrinology, Nutritional Medicine and Metabolism, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland. FAU - Stettler, Christoph AU - Stettler C AUID- ORCID: 0000-0003-1691-6059 AD - Department of Diabetes, Endocrinology, Nutritional Medicine and Metabolism, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland christoph.stettler@insel.ch. LA - eng SI - figshare/10.2337/figshare.12962561 PT - Journal Article DEP - 20200930 PL - United States TA - Diabetes Care JT - Diabetes care JID - 7805975 RN - 0 (Blood Glucose) RN - 0 (Hypoglycemic Agents) RN - 0 (Insulin) SB - IM MH - Adolescent MH - Adult MH - Blood Glucose/drug effects/metabolism MH - Blood Glucose Self-Monitoring/instrumentation/methods MH - *Diabetes Mellitus, Type 1/blood/diet therapy/drug therapy MH - *Diet, Carbohydrate-Restricted MH - Eating/physiology MH - Female MH - Glycemic Control/*methods MH - Humans MH - Hypoglycemia/blood/chemically induced MH - Hypoglycemic Agents/administration & dosage MH - Insulin/*administration & dosage MH - *Insulin Infusion Systems MH - Male MH - Middle Aged MH - Retrospective Studies MH - Young Adult EDAT- 2020/10/02 06:00 MHDA- 2021/05/29 06:00 CRDT- 2020/10/01 05:30 PHST- 2020/06/24 00:00 [received] PHST- 2020/09/11 00:00 [accepted] PHST- 2020/10/02 06:00 [pubmed] PHST- 2021/05/29 06:00 [medline] PHST- 2020/10/01 05:30 [entrez] AID - dc20-1560 [pii] AID - 10.2337/dc20-1560 [doi] PST - ppublish SO - Diabetes Care. 2020 Dec;43(12):3102-3105. doi: 10.2337/dc20-1560. Epub 2020 Sep 30.