Research

Macro partitioning

In individuals with prediabetes, consuming a high-energy breakfast (50% of daily energy) compared to a low-energy breakfast (20%) during prolonged sitting results in significantly higher total daily glucose and insulin exposure, despite similar 24-hour continuous glucose monitoring averages.

If you have prediabetes and sit for long periods, avoid making your first meal the largest of the day. This study found that a high-energy breakfast led to higher overall glucose and insulin exposure compared to a low-energy breakfast, even though the total calories and macros were identical. Consider eating a smaller breakfast and a larger dinner to minimize postprandial glucose spikes during sedentary work.

ModerateSupportsMEDIUM confidence
Total glucose area under the curve (AUC; +5.7 mmol/L/h, p = 0.019) and mean plasma glucose concentrations (+0.5 mmol/L, p = 0.014) were greater after HE-BF compared to LE-BF... Total insulin AUC was greater (+480 mIU/mL/h, p < 0.01) after HE-BF compared to LE-BF.
Evelyn B. Parr et al. · Nutrients · 2018

Why this rating

Randomized crossover design but small sample size (n=13) and underpowered for primary outcome.

Source

Impact of First Meal Size during Prolonged Sitting on Postprandial Glycaemia in Individuals with Prediabetes: A Randomised, Crossover Study

Evelyn B. Parr et al. · Nutrients · 2018

DOI 10.3390/nu10060733

crossover · n=13Cited 8×
Read the paper
DOI resolved against Crossref · corpus check 2026-06-10

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