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CompletedNCT04228341Updated Aug 20, 2021

The Effect of Degree of Rice-polishing on Glycaemic Response

An interventional study of Glucose Reference 1 and Glucose Reference 2 in Diabetes Mellitus and Obesity, sponsored by Singapore Institute of Food and Biotechnology Innovation. Completed at 1 site in Singapore. Open to male participants aged 21 Years to 60 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2021-08-20.

Sponsored by Singapore Institute of Food and Biotechnology Innovation · Not applicable, Interventional, and Other

From the registry’s dates

  • Registered 10 months after the study started (first participant enrolled Feb 2019, registered Jan 2020).
Phase
Not applicable
Study type
Interventional
Enrollment
14
Allocation
Randomized
Ages
21 Years to 60 Years
Sex
Male
01

Study summary

To investigate the effects of rice polishing on glycaemic and insulinaemic response in healthy Chinese male volunteers.

Read the detailed description

There will be a total of 8 test session. Each session will last for 3.5 hours. At each test session, volunteers will be served with test meal and blood will be collected. After an overnight fast, subjects will visit the research center. Two fasting capillary blood samples will be collected via fingerprick. Following the fasting samples, subject will consume the test meals. Further blood samples will be collected at 15, 30, 45, 60, 90, 120, 150, 180 minutes after the ingestion of test meal. These samples will be used to analyses for whole capillary blood glucose. At every 30 minute interval, samples will be collected for analysis of capillary plasma insulin.

02

Conditions studied

  • Diabetes Mellitus
  • Obesity

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03

In context

Diabetes Mellitus

10,925 studies on the registry are indexed under Diabetes Mellitus; 1,319 are open to participants now.

This study's enrollment of 14 is below the median of 80 across 8,367 interventional studies indexed under Diabetes Mellitus.

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Lead sponsor

Singapore Institute of Food and Biotechnology Innovation is the lead sponsor of 69 studies on the registry; 4 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
21 Years to 60 Years
Sexes eligible
Male
Accepts healthy volunteers
Yes

Inclusion criteria

  • Male
  • Chinese ethnicity
  • Age ≥21 and ≤ 60 years
  • Body mass index between 18.5 to 25 kg/m2
  • Normal blood pressure =\<140/90 mmHg
  • Fasting blood glucose \<6.0 mmol/L
  • In general good health

Exclusion criteria

Exclusion Criteria:

  • Current smoker
  • Have any metabolic diseases (such as diabetes, hypertension etc)
  • Do not have known glucose-6-phosphate dehydrogenase deficiency (G6PD deficiency)
  • Have medical conditions and/or taking medications known to affect glycaemia (glucocorticoids, thyroid hormones, thiazide diuretics)
  • Have intolerances or allergies to any foods
  • Currently partake in sports at the competitive and/or endurance levels
  • Intentionally restrict food intake
05

Study design

Phase
Not applicable
Primary purpose
Other
Allocation
Randomized
Intervention model
Crossover assignment
Masking
None (open label)
Enrollment
14 participants (actual)

Study arms

  • Other
    Glucose Reference 1

    Glucose solution 1

    Other: Glucose Reference 1

  • Other
    Glucose Reference 2

    Glucose solution 2

    Other: Glucose Reference 2

  • Other
    Glucose Reference 3

    Glucose solution 3

    Other: Glucose Reference 3

  • Experimental
    Brown Rice

    Cooked brown rice

    Other: Brown Rice

  • Experimental
    3 % polished rice

    Cooked 3 % polished rice

    Other: 3 % polished rice

  • Experimental
    6 % polished rice

    Cooked 6 % polished rice

    Other: 6 % polished rice

  • Experimental
    9 % polished rice

    9 % polished rice

    Other: 9 % polished rice

  • Experimental
    20 % Polished rice

    Cooked 20 % Polished rice (White Rice)

    Other: 20 % Polished rice

Interventions

  • OtherGlucose Reference 1

    50 g of glucose dissolved in 250 ml of water (First glucose control visit)

  • OtherGlucose Reference 2

    50 g of glucose dissolved in 250 ml of water (Second glucose control visit)

  • OtherGlucose Reference 3

    50 g of glucose dissolved in 250 ml of water (Third glucose control visit)

  • OtherBrown Rice

    Unpolished brown rice containing 50 g of available carbohydrate was cooked using a rice cooker (Toyomi) at a ratio of rice to water of 1: 2

  • Other3 % polished rice

    3% polished rice, containing 50 g of available carbohydrate was cooked using a rice cooker at a ratio of rice to water of 1: 2

  • Other6 % polished rice

    6% polished rice, containing 50 g of available carbohydrate was cooked using a rice cooker at a ratio of rice to water of 1: 2

  • Other9 % polished rice

    9 % polished rice, containing 50 g of available carbohydrate was cooked using a rice cooker at a ratio of rice to water of 1: 2

  • Other20 % Polished rice

    White rice (20% polished rice), containing 50 g of available carbohydrate was cooked using a rice cooker at a ratio of rice to water of 1: 2.

06

What researchers measure

Primary outcomes

  1. Glucose

    Whole capillary blood glucose will be measure using Hemocue analyser

    Time frame: Up to 180 minutes

Secondary outcomes

  1. Insulin

    Capillary plasma will be measure using Cobas analyser

    Time frame: Up to 180 minutes

07

Study locations

1 site
  • Clinical Nutrition Research Centre
    Singapore, 117599, Singapore
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 20, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04228341
Lead sponsor
Singapore Institute of Food and Biotechnology Innovation
Responsible party
JeyaKumar Henry (Principal Investigator, Singapore Institute of Food and Biotechnology Innovation) — Principal investigator
First posted
Jan 14, 2020
Start date
Feb 13, 2019
Primary completion
Jul 26, 2019
Completion
Jun 18, 2020
Last update
Aug 20, 2021

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Aug 2021. You cannot join it, but the record below documents what was studied.

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