Clinical Trials Logo

Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT04683432
Other study ID # 2018/01091
Secondary ID
Status Completed
Phase
First received
Last updated
Start date May 2, 2019
Est. completion date July 15, 2019

Study information

Verified date December 2020
Source Clinical Nutrition Research Centre, Singapore
Contact n/a
Is FDA regulated No
Health authority
Study type Observational

Clinical Trial Summary

Rationale: It is now recognized that diet plays a critical role in the etiology and management of chronic diseases such as type-2 diabetes, obesity and cardiovascular diseases. Evidence shows an increasing prevalence of type-2 diabetes as well as obesity, whereby large consumptions of carbohydrate foods is one of the leading contribution to these diseases. Food structure and texture can be modified to control oral processing behaviour, which would have subsequent impact on total energy intake and glycaemic response through altering the food breakdown path. Whilst it has been demonstrated that foods which are eaten at a faster rate leads to more food consumed ad-libitum and therefore higher energy intake, they are also eaten at fewer chews per bite, resulting in larger food particle sizes and hence slower digestion. Therefore it is important to understand the overall net effect of the opposing outcomes of food texture and oral processing behavior, bolus properties and glycaemic response, and identify the key factors which has the biggest influence on glycaemic response. The findings from this study can be used as guidelines on meal planning and making better informed choices between foods which are of the same composition/nutrition but with different health outcomes. Study Aims: The aim of this study is to understand how food texture and saliva characteristics influences oral processing behavior, bolus characteristics and postprandial glycaemic response. Study Design: Randomised crossover design where participants receive 2 treatments (i.e. 2 test meals) over 2 test sessions. Test sessions will include bolus characterisation of foods where participants chew and expectorate test foods (5g each) based on a fixed chew protocol. Study Population: Up to 40 healthy males aged 21-50 years with BMI between 18-25 kg/m2 Intervention: For test session 1 and 2, participants will receive 2 treatments (i.e. 2 test meals) in randomised order over 2 sessions. The test meals contain 50g carbohydrate load of different textures. Participants will be video recorded while consuming the test meals to derive oral processing behaviour (bites, chews, time food spent in mouth). Blood samples will be collected at baseline and post consumption (5, 10, 15, 30, 45, 60, 90, 120 minutes) to measure glycaemic responses to the test meals. For test session 3, participants will be asked to follow a fixed chew protocol to chew and expectorate 3 test foods while being video recorded. Similarly, oral processing behaviours will be analysed from the recorded videos. The spat out food samples (i.e. bolus samples) will be analysed for saliva uptake and bolus particle size indicating extent of food breakdown.


Description:

Study Aims: The aim of this study is to understand how food texture and saliva characteristics influences oral processing behavior, bolus characteristics and postprandial glycaemic response. The study hypothesizes that foods with a more elastic texture are eaten slower and requires more chewing, resulting in smaller bolus particle sizes and therefore higher postprandial glycaemic response due to an increased surface area for enzymatic digestion. Participants with higher saliva flowrate and/or alpha-amylase activity would also have shorter eating times and higher postprandial glycaemic responses. Study Design: Oral processing behaviours have high individual variances (Bolhuis et al 2013; Ketel et al 2019) and a large sample size is required in order to get significant differences between treatments. Based on previous papers on food texture and oral processing, a minimum of 20 healthy young male Chinese participants will be recruited in this study. The study will require participants to attend 1 screening session (1 hour) and 3 test sessions (3 hours for test sessions 1 and 2; 1 hour for test session 3). Screening (1 hour): All potential participants will be asked to give informed consent before taking part in any of the research activities. Baseline measurements including anthropometric (height, weight, percentage body fat using a Bioelectrical Impedance Analyser), fasting blood glucose via finger prick and blood pressure will be taken to access eligibility. Successfully screened participants will proceed to complete intraoral volume capacity measured using simple sip-and-spit measures, as well as provide stimulated and unstimulated saliva sample (approximately 4 x 5 ml each) via passive drooling to assess their saliva flowrates and saliva alpha-amylase activity. Test Foods: Commercially available and commonly consumed foods (e.g. white rice, korean rice cake, carrot, biscuits, etc.) are safe for human consumption and prepared in line with safe hygienic food preparation Test session 1 and 2 (3 hours each): Participants will be informed to fast 10 to 12 hours prior to test session 1 and 2. They are required to arrive the test centre between 08:00 - 09:00 a.m. Participants will be asked to consume a test meal during each session, consisting of a 'fast' (less elastic texture and eaten more quickly) or 'slow' food (more elastic texture and eaten more slowly) in total. The order of test foods presented will be randomised. These test foods will be of the same carbohydrate load (50g carbohydrate) with different textures (i.e. white rice vs. rice cakes). A baseline finger prick blood sample will be taken. After obtaining the baseline blood samples, test meal will be given to the participant to consumed within 15 minutes while being video recorded using a laptop webcam at face level. Following consumption of the test meal, finger prick blood samples will be taken for the next 5, 10, 15, 30, 45, 60, 90 and 120 minutes. The amount of blood that will be collected at every time point will be about a drop of blood (approximately 0.5ml per time point and 5 ml in total). Sensory and textural ratings of the test meal will be taken using a visual analogue scale on a laptop. Post-meal satiety responses using a visual analogue scale will also be collected on a laptop every 15 minutes. After completion of blood collection and satiety responses, the participant will be asked to chew on a separate portion of test meal (5g) until ready to swallow, and will be asked to expectorate the food bolus to assess their bolus properties including saliva uptake and particle size distribution. Video-recordings of the participant chewing the test foods will be taken. A set of ad-libitum snacks will be provided to participants after all the measurements have been completed. Test sessions 1 and 2 will be interspaced by a minimum of 5 days. Test session 3 (1 hour): Participants will be asked to chew on 3 test foods (white rice, rice cake, raw carrot) using a fixed chew protocol (i.e. 15 chews, 30 chews and chew until point of first swallow) and then expectorating the bolus to assess their bolus properties including saliva uptake and particle size distribution. Video-recordings of the participant chewing the test foods will be taken. Sessions 2 and 3 will be interspaced by a minimum of 1 day.


Recruitment information / eligibility

Status Completed
Enrollment 40
Est. completion date July 15, 2019
Est. primary completion date July 15, 2019
Accepts healthy volunteers Accepts Healthy Volunteers
Gender Male
Age group 21 Years to 40 Years
Eligibility Inclusion Criteria: - Male - Chinese ethnicity - Age between 21-40 years - Weigh at least 45 kg - Body mass index between 18to 25 kg/m² - Normal blood pressure (</=140/90 mmHg) - Fasting blood glucose <6.0 mmol/L - Healthy dentition and ability to bite, chew and swallow normally - No history of pain or discomfort in jaw movements or excessive teeth clenching or grinding, no caries or periodontal disease and no impaired salivation functions Exclusion Criteria: - Partake in sports at the competitive and/or endurance levels - Have known glucose-6-phosphate dehydrogenase (G6PD) deficiency - Have known history of anaemia or thalassemia minor - Have major chronic disease such as heart disease, cancer or diabetes mellitus - Take insulin or drugs known to affect glucose metabolism - Intentionally restrict food intake - Have major medical or surgical event requiring hospitalization within the preceding 3 months - Have taken antibiotics for 3 months before the study period - Smoker - Overnight shift worker - Have any known food allergy (eg. anaphylaxis to peanuts) - Have an active Tuberculosis (TB) condition or currently receiving treatment for TB - Have any known Chronic Infection or known to suffer from or have previously suffered from or is a carrier of Hepatitis B Virus (HBV), Hepatitis C Virus(HCV), Human Immunodeficiency Virus (HIV) - Member of the research team or their immediate family members. Immediate family member is defined as a spouse, parent, child, or sibling, whether biological or legally adopted - Enrolled in a concurrent research study judged not to be scientifically or medically compatible with the study of the CNRC - Have poor veins impeding venous access - Have any history of severe vasovagal syncope (blackouts or near faints) following blood draws

Study Design


Related Conditions & MeSH terms


Locations

Country Name City State
Singapore Singapore Institute of Food and Biotechnology Innovation (SIFBI)/Clinical Nutrition Research Centre Singapore

Sponsors (1)

Lead Sponsor Collaborator
Clinical Nutrition Research Centre, Singapore

Country where clinical trial is conducted

Singapore, 

Outcome

Type Measure Description Time frame Safety issue
Primary Oral processing behaviour of test meal Participants will be video-recorded to measure oral processing behaviour of the test meal (white rice or rice cake) During test session 1 (up to 3 hours)
Primary Oral processing behaviour of test meal Participants will be video-recorded to measure oral processing behaviour of the test meals (white rice or rice cake) During test session 2 (up to 3 hours)
Primary Blood glucose response to test meal Blood glucose response will be measured through blood samples collected via finger prick at baseline (i.e. 0 minute) and post consumption of test meal (white rice or rice cake). (i.e. 0 min, 5 min, 10 min, 15 min, 30 min, 45 min, 60 min, 90 min and 120 min (0.5ml blood each)). During test session 1 (up to 3 hours)
Primary Blood glucose response to test meal Blood glucose response will be measured through blood samples collected via finger prick at baseline (i.e. 0 minute) and post consumption of test meal (white rice or rice cake). (i.e. 0 min, 5 min, 10 min, 15 min, 30 min, 45 min, 60 min, 90 min and 120 min (0.5ml blood each)). During test session 2 (up to 3 hours)
Primary Reported satiety in response to test meal Meal satiety responses using a visual analogue scale (VAS) will be collected on a laptop every 15 minutes during pre- and post- consumption of test meal (white rice or rice cake). VAS is anchored at 'Not at all full' (0) to 'Extremely full' (100), where a higher score will indicate greater satiety. During test session 1 (up to 3 hours)
Primary Reported satiety in response to test meal Meal satiety responses using a visual analogue scale (VAS) will be collected on a laptop every 15 minutes during pre- and post- consumption of test meal (white rice or rice cake). VAS is anchored at 'Not at all full' (0) to 'Extremely full' (100), where a higher score will indicate greater satiety. During test session 2 (up to 3 hours)
Primary Reported sensory and textural rating of test meal Meal satiety responses after test meal (white rice or rice cake) is consumed will be assessed using a visual analogue scale (VAS) will be collected on a laptop every 15 minutes during test session 1. VAS is anchored at 'Not at all' (0) to 'Extremely' (100), where a higher score will indicate greater intensity. During test session 1 (up to 3 hours)
Primary Reported sensory and textural rating of test meal Meal satiety responses after test meal (white rice or rice cake) is consumed will be assessed using a visual analogue scale (VAS) will be collected on a laptop every 15 minutes during test session 1. VAS is anchored at 'Not at all' (0) to 'Extremely' (100), where a higher score will indicate greater intensity. During test session 2 (up to 3 hours)
Primary Bolus characterisation of test meal Bolus characterisation of the test meal will be assessed by having participants chew a fixed mouthful of the test meal (white rice or rice cake, 5g) until ready to swallow, then expectorating it in a cup.
Participants will be video-recorded to measure time and number of chews taken to swallow, before expectoration.
During test session 1 (up to 3 hours)
Primary Bolus characterisation of test meal Bolus characterisation of the test meal will be assessed by having participants chew a fixed mouthful of the test meal (white rice or rice cake, 5g) until ready to swallow, then expectorating it in a cup.
Participants will be video-recorded to measure time and number of chews taken to swallow, before expectoration.
During test session 2 (up to 3 hours)
Primary Bolus characterisation of 3 test foods Bolus characterisation of the test meals will be assessed by having participants chew a fixed mouthful of the test foods (5g) based on a fixed chew protocol, then expectorating it in a cup.
Participants will be video-recorded to measure time and number of chews taken to swallow, before expectoration.
During test session 3 (up to 1 hour)
See also
  Status Clinical Trial Phase
Completed NCT04704726 - Examining Essentialistic Beliefs About Food
Active, not recruiting NCT06042218 - Xiaxi Program for Back Health N/A
Not yet recruiting NCT06054542 - Turkish Version of Digital Eye Strain Questionnaire (DESQ)
Completed NCT03582943 - Effects of RLIC on Motor Learning in Middle-aged and Older Adults Phase 1
Recruiting NCT06086145 - Biomarker-estimated Flavanol Intake in Davis (FID)
Completed NCT04589221 - Sensory and Oral Processing Characteristics of Commonly Consumed Foods
Completed NCT01995838 - A Multicenter, Randomized, Double-blind, Placebo-controlled, Parallel-group, Bayesian Adaptive Randomization Design, Dose Response Study of the Efficacy of E2006 in Adults and Elderly Subjects With Chronic Insomnia Phase 2
Completed NCT05071170 - Satiety Responses and Oral Processing Characteristics of Commonly Consumed Meals
Completed NCT03962517 - Effect of GEMS-H on Locomotor Function in Adults N/A
Completed NCT04860349 - Is High Intensity Interval Training Effective to Reduce the Waist Circumference and Fat Percentage at Trunk Region N/A
Recruiting NCT04422782 - New Tools for Predicting Capillary Leak Shock During Dengue Fever N/A
Recruiting NCT04881292 - RF Based QIMT & QAS Study on Chinese Adults
Completed NCT04058769 - Software-guided Guideline Implementation in Premedication N/A
Not yet recruiting NCT04837170 - Safety and Efficacy Evaluation of S (+) - Ketamine in Adults Phase 4
Completed NCT05741047 - Comparative Effects of a2 Skim Milk on Mild Cognitive Impairment in Older Adults N/A
Active, not recruiting NCT02398825 - Activity and Risk Profile of Ponatinib in Chronic Phase Patients With Chronic Myeloid Leukemia Resistant to Imatinib Phase 2
Completed NCT05460585 - Cerebral Oxygenation Values in Healthy Adults Volunteers Measured With RheoPatch and NIRO-200NX
Completed NCT04843202 - Clinical Guidelines in Premedication Visit
Completed NCT04522063 - Variation in Food Intakes, Physical Activity, and Psychological Stress on Fluctuations in 24-hr Plasma Glucose Levels
Recruiting NCT04693949 - Effect of Nano-structured Alumina Coating on the Bond Strength of Zirconia Resin-bonded Fixed Dental Prostheses N/A