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AgingNCT05871060

Effect of a Novel Protein Supplement on Appetite in Older Adults

A study testing Whey Protein Concentrate and Whey hydrolysate in people with Aging and Appetite Loss, run by University College Dublin at 1 site in Ireland.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

An acute randomized crossover trial comparing the effects of the whey hydrolysate, whey protein concentrate and placebo (still flavored water) on appetite and energy intake in older adults. Both low-dose whey-derived treatment and placebo will be administered 30 minutes prior to breakfast and lunch meals. Read more about this study

Who is it for?
Ages 60 years and olderHealthy volunteers can take part
Conditions the study is for
Aging, Appetite Loss
What is being tested?
Whey Protein Concentrate and Whey hydrolysate
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
14 participants
Where
1 siteIreland
Study dates
25 Apr 2023to 30 Oct 2023
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 60 years and older
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • Community-dwelling,
  • Age 60+ years
  • Poor appetite (Simplified Nutritional Appetite Questionnaire (SNAQ) score </=14, answer a, b or c to Q.1 on SNAQ or answer b, c, or d to CES-D question regarding poor appetite in the past week)
  • BMI 20-25kg/m2

Who cannot join

  • Current medical condition or medication known to impact appetite or energy intake
  • Other medical condition that would impact study participation and outcomes, as judged by the study investigator.
  • Heavy smoker (>10/day)
  • Inability to come to study centre
  • Currently participating in another intervention study
  • Lacking informed consent
Show all 9Show fewer
  • Allergic to or unwilling to consume any of the study test foods
  • Loss of taste or smell associated with COVID-19
  • Unable to walk across a room

Trial locations and contacts

1 site in 1 country.

Ireland1 site
  • University College Dublin

    Dublin, Leinster, D04 V1W8

Other trials in Ireland

About this study

An acute randomized crossover trial comparing the effects of the whey hydrolysate, whey protein concentrate and placebo (still flavored water) on appetite and energy intake in older adults. Both low-dose whey-derived treatment and placebo will be administered 30 minutes prior to breakfast and lunch meals. Moreover, ghrelin secretion and activity will be monitored throughout the morning until the lunch time. Appetite will be assessed through visual analogue scale questionnaires.

Conditions
Aging, Appetite Loss
Being tested
Whey Protein Concentrate, Placebo, Whey hydrolysate
Keywords
Appetite, Poor Appetite, Ageing, Whey protein hydrolysate, Visual analogue scale, Energy intake, Ghrelin
Medical subject headings
Anorexia

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Whey Protein ConcentrateDietary supplement

    Whey protein concentrate consumed 30 minutes prior to breakfast and lunch meals

  • PlaceboDietary supplement

    Flavoured water consumed 30 minutes prior to breakfast and lunch meals

  • Whey hydrolysateDietary supplement

    Whey hydrolysate consumed 30 minutes prior to breakfast and lunch meals

Study groups in NCT05871060
Study groupRoleWhat they receive
whey concentrate supplementActive comparator2,2 grams of whey concentrate dissolved in 100 mL of water
Receives: Dietary Supplement: Whey Protein Concentrate
whey hydrolysate supplementExperimental2,2 grams of whey hydrolysate dissolved in 100 mL of water
Receives: Dietary Supplement: Whey hydrolysate
still flavoured waterPlacebo comparator100 mL of vanilla-flavoured water
Receives: Dietary Supplement: Placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Pre-meal and changes in Composite Appetite Score

    Validated 100 millimetre Visual Analogue Scales (VAS) will be used to assess appetite, at fourteen (14) set time points throughout the experimental visit. This VAS has anchors located at each end of the scale. On the left end of the scale, the extreme negative response (0 mm) is represented, while the right end (100 mm) represents the positive response. Participants mark along the line where it most represents their subjective perception between both ends. Composite Appetite Score is derived from VAS ratings of hunger, fullness, desire to eat and prospective food consumption.

    Measured: 8.5 hours: fasting, before breakfast, at 30, 60, 120, 180 and 210 minutes after ingestion of supplement and a standard meal; at 30, 60, 120 and 180 minutes following ingestion of supplement and lunch test meal. And immediately after each test meal.

  2. Energy intake (EI) (kilocalories)

    24-hour energy intake measurement. Participants will be served a standardised fixed breakfast and ad libitum lunch and dinner meals in the laboratory and provided with an evening snack box. 24 hour EI (kilocalories) will be measured objectively, by weighing foods before and after consumption and calculating energy intake based on their nutritional data. Total accumulated energy intake includes standard breakfast meal, ad libitum lunch meal, ad libitum dinner meal and bag with known foods for the evening time.

    Measured: 24 hours from breakfast, lunch and dinner meals, as well as from evening and night from provided snackbox.

Secondary outcomes (19)
  1. Palatability - Pleasantness

    100 millimetre Visual Analogue Scales (VAS) will be used after each test meal: breakfast, lunch and dinner. This VAS has anchors located at each end of the scale. On the left end of the scale (0 mm), the extreme negative response is represented, while the right end (100 mm) represents the positive response. Participants mark along the line where it most represents their subjective perception between both ends.

    Measured: Mean of ratings taken immediately following the three test meals (single measure) - breakfast, lunch and dinner

  2. Palatability - Filling

    100 millimetre Visual Analogue Scales (VAS) will be used after each test meal: breakfast, lunch and dinner. This VAS has anchors located at each end of the scale. On the left end of the scale (0 mm), the extreme negative response is represented, while the right end (100 mm) represents the positive response. Participants mark along the line where it most represents their subjective perception between both ends.

    Measured: Mean of ratings taken immediately following the three test meals (single measure) - breakfast, lunch and dinner

  3. Palatability - Satisfaction

    100 millimetre Visual Analogue Scales (VAS) will be used after each test meal: breakfast, lunch and dinner. This VAS has anchors located at each end of the scale. On the left end of the scale (0 mm), the extreme negative response is represented, while the right end (100 mm) represents the positive response. Participants mark along the line where it most represents their subjective perception between both ends.

    Measured: Mean of ratings taken immediately following the three test meals (single measure) - breakfast, lunch and dinner

  4. Palatability - Taste

    100 millimetre Visual Analogue Scales (VAS) will be used after each test meal: breakfast, lunch and dinner. This VAS has anchors located at each end of the scale. On the left end of the scale (0 mm), the extreme negative response is represented, while the right end (100 mm) represents the positive response. Participants mark along the line where it most represents their subjective perception between both ends.

    Measured: Mean of ratings taken immediately following the three test meals (single measure) - breakfast, lunch and dinner

  5. Palatability - Sweet

    100 millimetre Visual Analogue Scales (VAS) will be used after each test meal: breakfast, lunch and dinner. This VAS has anchors located at each end of the scale. On the left end of the scale (0 mm), the extreme negative response is represented, while the right end (100 mm) represents the positive response. Participants mark along the line where it most represents their subjective perception between both ends.

    Measured: Mean of ratings taken immediately following the three test meals (single measure) - breakfast, lunch and dinner

  6. Palatability - Savoury

    100 millimetre Visual Analogue Scales (VAS) will be used after each test meal: breakfast, lunch and dinner. This VAS has anchors located at each end of the scale. On the left end of the scale (0 mm), the extreme negative response is represented, while the right end (100 mm) represents the positive response. Participants mark along the line where it most represents their subjective perception between both ends.

    Measured: Mean of ratings taken immediately following the three test meals (single measure) - breakfast, lunch and dinner

  7. Pre-meal and changes in glucose

    Blood samples will be collected by a trained phlebotomist via cannula.

    Measured: 4 hours, from fasting state (morning) to immediately prior to lunch meal (afternoon): fasting, before breakfast, at 30, 60, 120, 180 and 210 minutes following ingestion of supplement

  8. Pre-meal and changes in insulin

    Blood samples will be collected by a trained phlebotomist via cannula.

    Measured: 4 hours, from fasting state (morning) to immediately prior to lunch meal (afternoon): fasting, before breakfast, at 30, 60, 120, 180 and 210 minutes following ingestion of supplement

  9. Pre-meal and changes in growth hormone

    Blood samples will be collected by a trained phlebotomist via cannula.

    Measured: 4 hours, from fasting state (morning) to immediately prior to lunch meal (afternoon): fasting, before breakfast, at 30, 60, 120, 180 and 210 minutes following ingestion of supplement

  10. Pre-meal and changes in cortisol

    Blood samples will be collected by a trained phlebotomist via cannula.

    Measured: 4 hours, from fasting state (morning) to immediately prior to lunch meal (afternoon): fasting, before breakfast, at 30, 60, 120, 180 and 210 minutes following ingestion of supplement

  11. Pre-meal and changes in GLP-1

    Blood samples will be collected by a trained phlebotomist via cannula.

    Measured: 4 hours, from fasting state (morning) to immediately prior to lunch meal (afternoon): fasting, before breakfast, at 30, 60, 120, 180 and 210 minutes following ingestion of supplement

  12. Pre-meal and changes in PYY

    Blood samples will be collected by a trained phlebotomist via cannula.

    Measured: 4 hours, from fasting state (morning) to immediately prior to lunch meal (afternoon): fasting, before breakfast, at 30, 60, 120, 180 and 210 minutes following ingestion of supplement

  13. Pre-meal and changes in Total Ghrelin

    Blood samples will be collected by a trained phlebotomist via cannula.

    Measured: 4 hours, from fasting state (morning) to immediately prior to lunch meal (afternoon): fasting, before breakfast, at 30, 60, 120, 180 and 210 minutes following ingestion of supplement

  14. Pre-meal and changes in Acylated Ghrelin

    Blood samples will be collected by a trained phlebotomist via cannula.

    Measured: 4 hours, from fasting state (morning) to immediately prior to lunch meal (afternoon): fasting, before breakfast, at 30, 60, 120, 180 and 210 minutes following ingestion of supplement

  15. Pre-meal and changes in Hunger

    Validated 100 mm Visual Analogue Scales (VAS) will be used to estimate changes in appetite, assessed at fourteen (14) set time points throughout the experimental visit. This VAS has anchors located at each end of the scale. On the left end of the scale (0 mm), the extreme negative response is represented, while the right end (100 mm) represents the extreme positive response. Participants mark along the line where it most represents their subjective perception between both ends. Composite Appetite Score derived from aspects such as hunger, fullness, desire to eat and prospective food consumption will be calculated. Fasting, mean and AUC values will be calculated.

    Measured: 8.5 hours: fasting, before breakfast, at 30, 60, 120, 180 and 210 minutes following ingestion of supplement and a standard meal; at 30, 60, 120 and 180 minutes following ingestion of supplement and test meal.

  16. Pre-meal and changes in Fullness

    Validated 100 mm Visual Analogue Scales (VAS) will be used to estimate changes in appetite, assessed at fourteen (14) set time points throughout the experimental visit. This VAS has anchors located at each end of the scale. On the left end of the scale (0 mm), the extreme negative response is represented, while the right end (100 mm) represents the extreme positive response. Participants mark along the line where it most represents their subjective perception between both ends. Composite Appetite Score derived from aspects such as hunger, fullness, desire to eat and prospective food consumption will be calculated. Fasting, mean and AUC values will be calculated.

    Measured: 8.5 hours: fasting, before breakfast, at 30, 60, 120, 180 and 210 minutes following ingestion of supplement and a standard meal; at 30, 60, 120 and 180 minutes following ingestion of supplement and test meal.

  17. Pre-meal and changes in Desire to Eat

    Validated 100 mm Visual Analogue Scales (VAS) will be used to estimate changes in appetite, assessed at fourteen (14) set time points throughout the experimental visit. This VAS has anchors located at each end of the scale. On the left end of the scale (0 mm), the extreme negative response is represented, while the right end (100 mm) represents the extreme positive response. Participants mark along the line where it most represents their subjective perception between both ends. Composite Appetite Score derived from aspects such as hunger, fullness, desire to eat and prospective food consumption will be calculated. Fasting, mean and AUC values will be calculated.

    Measured: 8.5 hours: fasting, before breakfast, at 30, 60, 120, 180 and 210 minutes following ingestion of supplement and a standard meal; at 30, 60, 120 and 180 minutes following ingestion of supplement and test meal.

  18. Pre-meal and changes in Prospective Food Consumption

    Validated 100 mm Visual Analogue Scales (VAS) will be used to estimate changes in appetite, assessed at fourteen (14) set time points throughout the experimental visit. This VAS has anchors located at each end of the scale. On the left end of the scale (0 mm), the extreme negative response is represented, while the right end (100 mm) represents the extreme positive response. Participants mark along the line where it most represents their subjective perception between both ends. Composite Appetite Score derived from aspects such as hunger, fullness, desire to eat and prospective food consumption will be calculated. Fasting, mean and AUC values will be calculated.

    Measured: 8.5 hours: fasting, before breakfast, at 30, 60, 120, 180 and 210 minutes following ingestion of supplement and a standard meal; at 30, 60, 120 and 180 minutes following ingestion of supplement and test meal.

  19. Liking of test meals

    9-point likert scale from 0 dislike extremely to 9 like extremely

    Measured: Mean of ratings taken immediately following the three test meals (single measure) - breakfast, lunch and dinner

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted23 May 2023
  2. Study start25 Apr 2023
  3. Primary completion15 Sep 2023
  4. Study completion30 Oct 2023

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Crossover
Model description
All participants undertake all three experimental conditions in a random order.
Masking
Double blind
Who is masked
Participant, Investigator
Enrolment
14 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05871060
Sponsor's protocol ID
LS-22-64-Horner
Other IDs
TC201800025
Status last verified
Nov 2023
First submitted
31 Mar 2023
Last updated
27 Nov 2023
Results posted
No
FDA-regulated drug
No
FDA-regulated device
No

Questions about this trial

What is this clinical trial studying?

A study testing Whey Protein Concentrate and Whey hydrolysate in people with Aging and Appetite Loss, run by University College Dublin at 1 site in Ireland.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 9 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 27 Nov 2023. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Ireland. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Pre-meal and changes in Composite Appetite Score (time frame: 8.5 hours: fasting, before breakfast, at 30, 60, 120, 180 and 210 minutes after ingestion of supplement and a standard meal; at 30, 60, 120 and 180 minutes following ingestion of supplement and lunch test meal. And immediately after each test meal.). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 27 Nov 2023.

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