Athletic PerformanceNCT07569770
Comparing High-Protein and Low-Protein Multi-Ingredient Supplements for Body Composition and Performance in Elite Rugby Players
A study testing Whey Protein Concentrate and Single Formulated Multi-Ingredient Supplement in people with Athletic Performance and Body Composition, run by University of Taipei at 1 site in Taiwan.
Trial summary
The purpose of this 12-week study is to compare the effects of two different post-exercise nutritional supplements on the body composition and exercise performance of elite male university rugby players. Read more about this study
- Who is it for?
- Ages 19 to 26 years, men onlyHealthy volunteers can take part
- Conditions the study is for
- Athletic Performance, Body Composition, Whey Protein
- What is being tested?
- Whey Protein Concentrate and Single Formulated Multi-Ingredient Supplement
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 20 participants
- Where
- 1 siteTaiwan
- Study dates
- 30 Nov 2023to 30 Jul 2024
- 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 19 to 26 years
- Men only
- Healthy volunteers accepted
- Adult
Who may be able to join
- Elite rugby athletes in the university team
- No consumption of performance-enhancing supplements (e.g., creatine, protein supplements, or anabolic-androgenic steroids) one month prior to the study
- No current medication or major musculoskeletal injuries
Who cannot join
- Vegetarianism
- Whey protein allergy
- Body weight fluctuation of more than 10 kg in the past three months
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Comparison of High and Low Protein Dose With Multi-ingredient Supplementation for Body Composition and Exercise Performance in Elite Rugby Players
The purpose of this 12-week study is to compare the effects of two different post-exercise nutritional supplements on the body composition and exercise performance of elite male university rugby players. Athletes often consume very high amounts of protein to build muscle and recover, but excessive protein intake might pose potential health risks.
Study Hypothesis:
Read more
The researchers hypothesize that a multi-ingredient supplement with a lower total protein content (about 20 grams) will yield comparable or even superior improvements in body composition and physical performance compared to a standard high-dose whey protein supplement (40 grams).
Study Design:
Twenty elite male college rugby players will be randomly divided into two equal groups. One group will receive the high-dose whey protein, while the other group will receive the lower-dose multi-ingredient supplement (which includes protein, leucine, creatine, red amaranth, and elderberry). Participants will consume their assigned supplement immediately after their training sessions, four times a week for 12 weeks.
Assessments:
Before and after the 12-week intervention, the researchers will measure the participants' body composition (muscle and fat mass), maximum muscle strength, power, agility, and aerobic endurance. The overall goal is to determine if athletes can achieve optimal performance and muscle growth with a lower, more efficient protein intake strategy.
- Conditions
- Athletic Performance, Body Composition, Whey Protein, Protein
- Being tested
- Whey Protein Concentrate, Single Formulated Multi-Ingredient Supplement
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Whey Protein ConcentrateDietary supplement
Participants consume 40 g of Whey Protein Concentrate (WPC-80), providing 166 kcal, 32 g of protein, 5 g of carbohydrate, and 2 g of fat per serving. It is consumed immediately after training, four times per week for 12 weeks.
Single Formulated Multi-Ingredient SupplementDietary supplement
Participants consume a single, pre-mixed formulated supplement powder containing approximately 20 g of protein (whey protein fortified with additional leucine and glycine), 30 g of carbohydrates, creatine, red amaranth extract, and elderberry extract (169 kcal). It is consumed immediately after training, four times per week for 12 weeks.
| Study group | Role | What they receive |
|---|---|---|
| High Protein Group | Active comparator | Not described Receives: Dietary Supplement: Whey Protein Concentrate |
| Low Protein Multi-Ingredient Group | Experimental | Not described Receives: Dietary Supplement: Single Formulated Multi-Ingredient Supplement |
What is being measured
The primary outcome is the main question the study is designed to answer.
Change in Muscle Mass
Muscle mass is assessed using Dual-energy X-ray Absorptiometry (DXA). The change is evaluated by comparing the baseline values to the post-intervention values.
Measured: Baseline and Week 12
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted6 May 2026
- Study start30 Nov 2023
- Primary completion30 Mar 2024
- Study completion30 Jul 2024
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Athletic PerformanceStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
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
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 20 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of Taipei
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Chien-Wen Hou, University of Taipei
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07569770
- Sponsor's protocol ID
- IRB-2023-050
- Status last verified
- May 2026
- First submitted
- 29 Apr 2026
- Last updated
- 13 May 2026
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No: To protect participant privacy, the sharing of individual participant data (IPD) was not included in the informed consent approved by the Institutional Review Board.
Study at a glance
From the registry record, last updated by the sponsor on 13 May 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Comparison of High and Low Protein Dose With Multi-ingredient Supplementation for Body Composition and Exercise Performance in Elite Rugby Players
- ClinicalTrials.gov ID
- NCT07569770
- Acronym / sponsor ID
- IRB-2023-050
- Conditions
- Athletic Performance, Body Composition, Whey Protein, Protein
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 20 participants (actual)
- Lead sponsor
- University of TaipeiUniversity, hospital or other
- Study start
- 30 Nov 2023 (actual)
- Primary completion
- 30 Mar 2024 (actual)
- Study completion
- 30 Jul 2024 (actual)
- First posted
- 6 May 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of this 12-week study is to compare the effects of two different post-exercise nutritional supplements on the body composition and exercise performance of elite male university rugby players. Athletes often consume very high amounts of protein to build muscle and recover, but excessive protein intake might pose potential health risks.
Study Hypothesis:
The researchers hypothesize that a multi-ingredient supplement with a lower total protein content (about 20 grams) will yield comparable or even superior improvements in body composition and physical performance compared to a standard high-dose whey protein supplement (40 grams).
Study Design:
Twenty elite male college rugby players will be randomly divided into two equal groups. One group will receive the high-dose whey protein, while the other group will receive the lower-dose multi-ingredient supplement (which includes protein, leucine, creatine, red amaranth, and elderberry). Participants will consume their assigned supplement immediately after their training sessions, four times a week for 12 weeks.
Assessments:
Before and after the 12-week intervention, the researchers will measure the participants' body composition (muscle and fat mass), maximum muscle strength, power, agility, and aerobic endurance. The overall goal is to determine if athletes can achieve optimal performance and muscle growth with a lower, more efficient protein intake strategy.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| High Protein Group | Active comparator | Dietary Supplement: Whey Protein Concentrate |
| Low Protein Multi-Ingredient Group | Experimental | Dietary Supplement: Single Formulated Multi-Ingredient Supplement |
Who may qualify
- Ages
- 19 to 26 years
- Sex
- Male only
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (3 listed)
- Elite rugby athletes in the university team
- No consumption of performance-enhancing supplements (e.g., creatine, protein supplements, or anabolic-androgenic steroids) one month prior to the study
- No current medication or major musculoskeletal injuries
Key exclusion criteria (3 listed)
- Vegetarianism
- Whey protein allergy
- Body weight fluctuation of more than 10 kg in the past three months
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Whey Protein ConcentrateParticipants consume 40 g of Whey Protein Concentrate (WPC-80), providing 166 kcal, 32 g of protein, 5 g of carbohydrate, and 2 g of fat per serving. It is consumed immediately after training, four times per week for 12 weeks. | Dietary supplement | High Protein Group |
| Single Formulated Multi-Ingredient SupplementParticipants consume a single, pre-mixed formulated supplement powder containing approximately 20 g of protein (whey protein fortified with additional leucine and glycine), 30 g of carbohydrates, creatine, red amaranth extract, and elderberry extract (169 kcal). It is consumed immediately after training, four times per week for 12 weeks. | Dietary supplement | Low Protein Multi-Ingredient Group |
Primary outcome
Change in Muscle Mass
Time frame: Baseline and Week 12
Muscle mass is assessed using Dual-energy X-ray Absorptiometry (DXA). The change is evaluated by comparing the baseline values to the post-intervention values.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 13 May 2026.
- Individual participant dataSharing planned: No. To protect participant privacy, the sharing of individual participant data (IPD) was not included in the informed consent approved by the Institutional Review Board.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Whey Protein Concentrate and Single Formulated Multi-Ingredient Supplement in people with Athletic Performance and Body Composition, run by University of Taipei at 1 site in Taiwan.
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 3 inclusion and 3 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 13 May 2026. 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 Taiwan. 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. 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?
Change in Muscle Mass (time frame: Baseline and Week 12). 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 13 May 2026; AzTrials last refreshed its copy on 26 Oct 2026.