Evaluation of Factors Related to Glycemic Management in Professional Cyclists With Type 1 Diabetes Over a 7-Day Stage Race.

Scott, Samuel N.; Christiansen, Mark P; Fontana, Federico Y; Stettler, Christoph; Bracken, Richard M; Hayes, Charlotte A; Fisher, Miles; Bode, Bruce; Lagrou, Peter H; Southerland, Phil; Riddell, Michael C (2020). Evaluation of Factors Related to Glycemic Management in Professional Cyclists With Type 1 Diabetes Over a 7-Day Stage Race. Diabetes care, 43(5), pp. 1142-1145. American Diabetes Association 10.2337/dc19-2302

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OBJECTIVE

To investigate factors related to glycemic management among members of a professional cycling team with type 1 diabetes over a 7-day Union Cycliste Internationale World Tour stage race.

RESEARCH DESIGN AND METHODS

An observational evaluation of possible factors related to glycemic management and performance in six male professional cyclists with type 1 diabetes (HbA1c 6.4 ± 0.6%) during the 2019 Tour of California.

RESULTS

In-ride time spent in euglycemia (3.9-10.0 mmol/L glucose) was 63 ± 11%, with a low percentage of time spent in level 1 (3.0-3.9 mmol/L; 0 ± 1% of time) and level 2 (<3.0 mmol/L; 0 ± 0% of time) hypoglycemia over the 7-day race. Riders spent 25 ± 9% of time in level 1 (10.1-13.9 mmol/L) and 11 ± 9% in level 2 (>13.9 mmol/L) hyperglycemia during races. Bolus insulin use was uncommon during races, despite high carbohydrate intake (76 ± 23 g ⋅ h-1). Overnight, the riders spent progressively more time in hypoglycemia from day 1 (6 ± 12% in level 1 and 0 ± 0% in level 2) to day 7 (12 ± 12% in level 1 and 2 ± 4% in level 2) (χ2[1] > 4.78, P < 0.05).

CONCLUSIONS

Professional cyclists with type 1 diabetes have excellent in-race glycemia, but significant hypoglycemia during recovery overnight, throughout a 7-day stage race.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Gynaecology, Paediatrics and Endocrinology (DFKE) > Clinic of Endocrinology, Diabetology and Clinical Nutrition

UniBE Contributor:

Scott, Samuel Nathan, Stettler, Christoph

Subjects:

600 Technology > 610 Medicine & health

ISSN:

0149-5992

Publisher:

American Diabetes Association

Language:

English

Submitter:

Laura Goetschi

Date Deposited:

11 Jan 2021 09:37

Last Modified:

05 Dec 2022 15:43

Publisher DOI:

10.2337/dc19-2302

PubMed ID:

32179510

BORIS DOI:

10.48350/149893

URI:

https://boris.unibe.ch/id/eprint/149893

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