Abstract
Objectives
This study compared the effects of consuming different forms (bite size, puree) and two fruit types (guava, papaya) on glycemic response (GR) in elderly and young adults.
Design
This study was conducted using a randomized, crossover design.
Participants
Nineteen healthy participants (9 elderly, 10 young adults) were recruited from the general public in Singapore. Intervention: Participants consumed glucose (reference food) on three occasions and test fruits (guava bites, guava puree, papaya bites, and papaya puree) on one occasion each.
Measurements
Blood glucose was analyzed prior to consuming the test food, at 15, 30, 45, 60, 90 and 120 minutes after food consumption.
Results
The incremental area under the blood glucose response curve (iAUC) over 120 minutes for all the treatments was significantly lower than glucose (all P < 0.001). All fruit forms and types studied were low glycemic index (GI) (guava bites: 29; papaya bites: 38; papaya puree: 42; guava puree: 47), albeit a significant difference in GI between the treatments was found (P = 0.003). Elderly exhibited significantly greater GR than young participants (P = 0.019).
Conclusion
Although fruit form influences GR in the elderly and young adults, all fruit types and forms studied were found to be low GI. This study indicates that fruits are a valuable source of nutrient irrespective of the form of delivery in elderly and young adults. This study was registered at www.anzctr.org.au as ACTRN12614000655640.
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Abbreviations
- CV:
-
coefficient of variation
- GI:
-
glycemic index
- GR:
-
glycemic response
- iAUC:
-
incremental area under the curve
- VAS:
-
visual analog scale
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Tey, S.L., Lee, D.E.M. & Henry, C.J. Fruit form influences postprandial glycemic response in elderly and young adults. J Nutr Health Aging 21, 887–891 (2017). https://doi.org/10.1007/s12603-017-0880-9
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DOI: https://doi.org/10.1007/s12603-017-0880-9