The glycaemic response to morning fasted resistance exercise is more consistent than the response to afternoon fed resistance exercise for adults with type 1 diabetes: a randomised crossover comparison
Authors' conclusion
The glycaemic response to AM-FAST was more consistent and characterised by increases in glucose concentration, whereas the glycaemic response to PM-FED was less consistent and produced decreases in glucose concentration.
Study context
- Population
- Adults with T1D, HbA1c <85 mmol/mol (10.0%), aged 18–55 years, without contraindications to resistance exercise; University of Albertasix sessions each
- Participants
- 12 adults
- Comparison
- Morning fasted vs afternoon fed resistance exercise
- Primary endpoint
- Within-participant SD (wpSD) of the capillary blood glucose response
Methodological detailsunblinded, supervised
- Unblinded
- Supervised
Primary result
As reported in the abstract
wpSD of change in capillary glucose during exercise
AM-FAST
1.0
± 1.1 · mmol/l
PM-FED
1.5
± 1.0 · mmol/l
P = 0.029
Further findings
| Outcome | AM-FAST | PM-FED | P value |
|---|---|---|---|
| Change in capillary glucose during exerciseIncrease for AM-FAST, decrease for PM-FED | 1.4 ± 1.9 mmol/l | 0.9 ± 2.3 mmol/l | P = 0.017 |
| % time in hyperglycaemia (CGM) · 6 h post exercise | 56.7% (interval 27.2–67.9) | 33.0% (interval 22.6–41.5) | P = 0.003 |
- Within-participant standard deviation (wpSD) during 30 min seated recovery · 30 min post exercise
- P = 0.76
wpSD during 30 min seated recovery · 30 min post exercise
- No difference in wpSD between conditions
Original publication
The glycaemic response to morning fasted resistance exercise is more consistent than the response to afternoon fed resistance exercise for adults with type 1 diabetes: a randomised crossover comparison. Diabetologia. Published 14 March 2026. doi:10.
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