Glycaemic patterns of male professional athletes with type 1 diabetes during exercise, recovery and sleep: Retrospective, observational study over an entire competitive season
Authors' conclusion
The analysis of glycaemic patterns of professional endurance athletes revealed that overall glycaemia was generally within targets. For further improvement, athletes, team staff and caregivers may focus on hyperglycaemia during competitions and nocturnal hypoglycaemia after NCE.
Study context
- Population
- Professional male cyclists with T1D; mean HbA1c 50 ± 5 mmol/mol (6.7 ± 0.5%)
- Participants
- 12 participants
- Exposure
- Competitive exercise days vs non-competitive exercise days
- Outcome
- Overall glycaemia (CGM) over the season
Methodological detailsentire competitive season, CGM data
- Entire competitive season
- CGM data
Main finding
As reported in the abstract
TIR (3.9-10 mmol/L), mean ± SD
70.0 ± 13.7%
Time in hypoglycaemia (<3.9 mmol/L), mean ± SD
6.4 ± 4.7%
Time in hyperglycaemia (>10 mmol/L), mean ± SD
23.6 ± 12.5%
Observational data: associations, not effects.
Further findings
Time in hyperglycaemia · higher with CE
P = 0.012
Mean glucose during exercise sessions · higher with CE
P < 0.001
- Nocturnal hypoglycaemia on non-competitive exercise (NCE) days · nights of NCE days
- 10.1 · ± 7.4 · %
Glycaemia during the competitive exercise (CE) phase
- TIR during CE phase
- 60.4 ± 13.0%
- Time in hyperglycaemia during CE phase
- 38.5 ± 12.9%
Hyperglycaemia during exercise
- Probability of hyperglycaemia during exercise increased with longer duration, higher intensity and higher variability of exercise
Cycling days
- Days cycled (entire season 332.6 ± 18.8 days)
- 280.8 ± 28.1 days
Original publication
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