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Fruit form influences postprandial glycemic response in elderly and young adults

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The journal of nutrition, health & aging

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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Correspondence to Christiani Jeyakumar Henry.

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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

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