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Consumption of the slow digesting starch waxy maize leads to blunted and sustained carbohydrate utilization but does not influence energy expenditure or appetite
Author(s) -
Sands Amanda L.,
Leidy Heather J.,
Hamaker Bruce R.,
Maguire Paul,
Campbell Wayne W.
Publication year - 2008
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.22.1_supplement.1089.2
Subject(s) - postprandial , appetite , maltodextrin , carbohydrate , energy expenditure , insulin , endocrinology , medicine , starch , area under the curve , zoology , chemistry , food science , biology , organic chemistry , spray drying
Background: The postprandial metabolic and appetitive responses of waxy maize, a slow‐digesting carbohydrate (CHO), are undocumented in humans and were examined in this study. Methods: 12 young, physically fit men and women (age: 23 ± 1 y; BMI: 22.2 ± 0.7 kg/m 2 ; physical activity: 556 ± 120 min/wk) consumed, on separate testing days, 50 g of available CHO as either fast‐digesting maltodextrin (M) or waxy‐maize starch (WM). Plasma glucose and insulin concentrations, whole body energy expenditure and appetite (hunger, fullness, and desire to eat) were measured over 4 h. Results: Compared to M, WM led to lower postprandial glucose (1082 ± 151 vs. 2186 ± 262 mg/dL•240 min; p<0.001) and insulin (833 ±164 vs. 1628 ± 165 uU/mL•240 min; p<0.005) area under the curve during the 4 h period. These differences were driven by the blunted glucose response during the first hour (p<0.001) and the blunted insulin response during the first two hours (p<0.005) in WM. CHO utilization was lower after 1 h but higher after 4 h following WM vs. M. Composite CHO utilization over the entire 4 h period was not different between WM and M. No differences in energy expenditure or appetite were observed between WM vs. M. Conclusion: These results support that waxy maize provides sustained glucose availability in young, physically fit adults. Support: US Army, Natick Soldier RDECOM, Combat Feeding Directorate; Ingestive Behavior Res. Ctr., Purdue University