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Protein hydrolysate co-ingestion does not modulate 24 h glycemic control in long-standing type 2 diabetes patients
R J F Manders1, S F E Praet, M H Vikström
1Department of Human Biology, Nutrition and Toxicology Research Institute Maastricht (NUTRIM), Maastricht University, Maastricht, The Netherlands. R.Manders@HB.unimaas.nl
Objective:
Evaluate the efficacy of protein hydrolysate co-ingestion as a dietary strategy to improve blood glucose homeostasis under free-living conditions in long-standing type 2 diabetes patients.
Methods:
A total of 13 type 2 diabetes patients were enrolled in a randomized, double-blind cross-over design and studied on two occasions for 40 h under strict dietary standardization but otherwise normal, free-living conditions. In one trial, subjects ingested a protein hydrolysate (0.4 g kg(-1) bw casein hydrolysate, PRO) with every main meal. In the other trial, a placebo was ingested (PLA). Blood glucose concentrations were assessed by continuous glucose monitoring.
Results:
Average 24 h glucose concentrations were similar between the PLA and the PRO trials (8.9 +/- 0.8 vs 9.2 +/- 0.7 mmol l(-1), respectively). Hyperglycemia (glucose concentrations >10 mmol l(-1)) was experienced 34 +/- 9% of the time (8 +/- 2 h per 24 h) in the PLA trial. Protein hydrolysate co-ingestion with each main meal (PRO) did not reduce the prevalence of hyperglycemia (39 +/- 10%, 9 +/- 2 h per 24 h; P=0.2).
Conclusion:
Co-ingestion of a protein hydrolysate with each main meal does not improve glucose homeostasis over a 24 h period in long-standing type 2 diabetes patients.
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