Healthy VolunteersNCT07598786
Development and Strategic Research of Practical Applications in Sports Nutrition
A study testing Dairy intervention in people with Healthy Volunteers, run by National Taiwan Sport University.
Trial summary
This study evaluates the practical feasibility and potential effects of an 8-week dairy product intervention in physically active adults aged 18-39 years. Participants will consume a dairy product enriched with high protein, calcium, and vitamin D under real-life conditions. Read more about this study
- Who is it for?
- Ages 18 to 39 yearsHealthy volunteers can take part
- Conditions the study is for
- Healthy Volunteers
- What is being tested?
- Dairy intervention
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 50 participants
- Where
- No sites listed yet
- Study dates
- 1 Jun 2026to 1 Sep 2026
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
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 18 to 39 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- Aged 18-39 years.
- Have regular exercise habits, defined as exercising at least three times per week, with each session lasting no less than 30 minutes. Exercise intensity should reach a heart rate of approximately ≥130 beats/min or a perceived intensity characterized by noticeable breathlessness and sweating.
- Preferably, at least one exercise session per week should include resistance training.
- Participants must be able to consume dairy products and have no lactose intolerance.
Who cannot join
- Individuals with lactose intolerance or an allergy to dairy products.
- Individuals who are pregnant, planning to become pregnant, or breastfeeding.
- Individuals with a smoking habit.
- Individuals diagnosed by a physician with cardiovascular disease, hypertension, metabolic disease, asthma, or kidney disease.
- Individuals with a body mass index (BMI) ≥27.
- Individuals who have experienced limb or neuromuscular exercise-related injuries within the past 6 months that prevent them from engaging in regular exercise.
Trial locations and contacts
No sites are listed yet. Contact the study team or a site near you to ask about taking part.
About this study
This study evaluates the practical feasibility and potential effects of an 8-week dairy product intervention in physically active adults aged 18-39 years. Participants will consume a dairy product enriched with high protein, calcium, and vitamin D under real-life conditions. Assessments will be conducted before the intervention, after 4 weeks, and after 8 weeks, including subjective perception questionnaires, body composition analysis, and functional physical performance tests. The study aims to examine changes in physical status, functional capacity, and user experience during continuous product use.
Read the detailed description
With increasing awareness of regular exercise and health promotion, sports nutrition products have become a common supplementation choice among physically active populations. In real-world settings, these products are typically consumed continuously as part of daily life. Evaluating changes in physical status, functional physical performance, and users' subjective perceptions during actual use therefore requires research designs that closely reflect everyday living conditions.
This study recruits physically active adults aged 18-39 years and conducts an 8-week intervention involving the consumption of a dairy product enriched with high protein, calcium, and vitamin D. A pre-, mid-, and post-intervention design is employed, integrating subjective perception questionnaires, body composition analysis, and functional physical performance assessments to evaluate changes in physical status, functional capacity, and subjective experiences throughout the intervention period. Through this multi-dimensional evaluation approach, the study aims to examine the practical feasibility and application value of the product in real-life settings and to provide evidence to support sports nutrition practice and future research.
- Conditions
- Healthy Volunteers
- Being tested
- Dairy intervention
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Dairy interventionDietary supplement
An 8-week high-protein, high-calcium, and vitamin D-enriched dairy intervention.
| Study group | Role | What they receive |
|---|---|---|
| Dairy intervention group | Experimental | An 8-week high-protein, high-calcium, and vitamin D-enriched dairy intervention. Receives: Dietary Supplement: Dairy intervention |
What is being measured
The primary outcome is the main question the study is designed to answer.
Questionnaire-based subjective assessment
Participants' subjective physical sensations, post-exercise fatigue, body image perceptions, and product use experience will be assessed using individual items from a self-administered questionnaire developed for this study. Questionnaire items may include Likert-scale items, categorical response options, and open-ended responses. Likert-scale items will be reported separately according to their original response scale, with the minimum and maximum values specified for each item. Categorical items will be reported as the number and percentage of participants selecting each response option. Open-ended responses will be summarized descriptively. No overall questionnaire total score will be calculated.
Measured: The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Handgrip Strength Test
Participants performed the test in a standing position with their arms naturally hanging down. They held the handgrip dynamometer with one hand and applied maximal force continuously for at least 3 seconds. Each hand was tested three times, and the best value was recorded.
Measured: The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Push-Up Test
Participants performed the push-up test on an exercise mat, with both hands placed shoulder-width apart to support the body. The fingers pointed forward, the elbows were fully extended, and the feet were approximately 10 cm apart. Male participants performed the test with support from the feet, whereas female participants performed the modified version with support from the knees. Participants were instructed to complete as many repetitions as possible while maintaining proper form. The test was terminated when the movement no longer met the required standard or could not be continued.
Measured: The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Curl-Up Test
Participants lay supine on an exercise mat with both knees bent and feet flat on the floor. They performed curl-ups according to a fixed rhythm. Participants were instructed to complete as many repetitions as possible while maintaining proper form.
When a participant failed to perform the movement correctly once, the examiner raised one hand and indicated the number "one." If the participant failed a second time, the examiner indicated the number "two." The test was terminated when the participant failed twice or completed 75 repetitions. If the participant was unable to maintain the required rhythm or perform the movement according to the standard criteria, the test was stopped.
Measured: The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Three-Minute Progressive Step-in-Place Test
Participants performed step-in-place movements according to the instructions and raised their knees to the designated height. The test lasted for 3 minutes, with an initial cadence of 96 beats per minute, which was progressively increased each minute.
During the test, heart rate was recorded using a heart rate monitor before exercise, during exercise, and during the post-exercise recovery period.
Measured: The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Secondary outcomes (7)
Body weight
Body weight will be measured using the InBody 570 bioelectrical impedance analyzer (InBody, Seoul, South Korea) and reported in kilograms (kg).
Measured: The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Body mass index
Body mass index (BMI) will be calculated from body weight and height and reported in kilograms per square meter (kg/m^2).
Measured: The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Body fat percentage
Body fat percentage will be measured using the InBody 570 bioelectrical impedance analyzer (InBody, Seoul, South Korea) and reported as a percentage (%).
Measured: The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Fat mass
Fat mass will be measured using the InBody 570 bioelectrical impedance analyzer (InBody, Seoul, South Korea) and reported in kilograms (kg).
Measured: The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Skeletal muscle mass
Skeletal muscle mass will be measured using the InBody 570 bioelectrical impedance analyzer (InBody, Seoul, South Korea) and reported in kilograms (kg).
Measured: The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Skeletal muscle percentage
Skeletal muscle percentage will be measured using the InBody 570 bioelectrical impedance analyzer (InBody, Seoul, South Korea) and reported as a percentage (%).
Measured: The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Waist-to-hip ratio
Waist-to-hip ratio will be measured using the InBody 570 bioelectrical impedance analyzer (InBody, Seoul, South Korea) and reported as a ratio.
Measured: The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted20 May 2026
- Study start1 Jun 2026 (estimated)
- Primary completion1 Sep 2026 (estimated)
- Study completion1 Sep 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Healthy VolunteersStudies 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
- Basic science
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 50 participants (estimated)
Sponsor and investigators
- Lead sponsor
- National Taiwan Sport University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Yi-Ju Hsu, National Taiwan Sport University
- Investigators
- Yi-Ju Hsu, Professor, Principal investigator, National Taiwan Sport University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07598786
- Sponsor's protocol ID
- NTSUIRB-115-010
- Status last verified
- May 2026
- First submitted
- 8 May 2026
- Last updated
- 20 May 2026
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 20 May 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Development and Strategic Research of Practical Applications in Sports Nutrition
- ClinicalTrials.gov ID
- NCT07598786
- Acronym / sponsor ID
- NTSUIRB-115-010
- Conditions
- Healthy Volunteers
- Study type
- Interventional
- Recruitment status
- Not yet recruiting
- Enrolment
- 50 participants (estimated)
- Lead sponsor
- National Taiwan Sport UniversityUniversity, hospital or other
- Study start
- 1 Jun 2026 (estimated)
- Primary completion
- 1 Sep 2026 (estimated)
- Study completion
- 1 Sep 2026 (estimated)
- First posted
- 20 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.
This study evaluates the practical feasibility and potential effects of an 8-week dairy product intervention in physically active adults aged 18-39 years. Participants will consume a dairy product enriched with high protein, calcium, and vitamin D under real-life conditions. Assessments will be conducted before the intervention, after 4 weeks, and after 8 weeks, including subjective perception questionnaires, body composition analysis, and functional physical performance tests. The study aims to examine changes in physical status, functional capacity, and user experience during continuous product use.
Detailed description
With increasing awareness of regular exercise and health promotion, sports nutrition products have become a common supplementation choice among physically active populations. In real-world settings, these products are typically consumed continuously as part of daily life. Evaluating changes in physical status, functional physical performance, and users' subjective perceptions during actual use therefore requires research designs that closely reflect everyday living conditions.
This study recruits physically active adults aged 18-39 years and conducts an 8-week intervention involving the consumption of a dairy product enriched with high protein, calcium, and vitamin D. A pre-, mid-, and post-intervention design is employed, integrating subjective perception questionnaires, body composition analysis, and functional physical performance assessments to evaluate changes in physical status, functional capacity, and subjective experiences throughout the intervention period. Through this multi-dimensional evaluation approach, the study aims to examine the practical feasibility and application value of the product in real-life settings and to provide evidence to support sports nutrition practice and future research.
Study design
- Primary purpose
- Basic science
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Dairy intervention group | Experimental | Dietary Supplement: Dairy interventionAn 8-week high-protein, high-calcium, and vitamin D-enriched dairy intervention. |
Who may qualify
- Ages
- 18 to 39 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (4 listed)
- Aged 18-39 years.
- Have regular exercise habits, defined as exercising at least three times per week, with each session lasting no less than 30 minutes. Exercise intensity should reach a heart rate of approximately ≥130 beats/min or a perceived intensity characterized by noticeable breathlessness and sweating.
- Preferably, at least one exercise session per week should include resistance training.
- Participants must be able to consume dairy products and have no lactose intolerance.
Key exclusion criteria (6 listed)
- Individuals with lactose intolerance or an allergy to dairy products.
- Individuals who are pregnant, planning to become pregnant, or breastfeeding.
- Individuals with a smoking habit.
- Individuals diagnosed by a physician with cardiovascular disease, hypertension, metabolic disease, asthma, or kidney disease.
- Individuals with a body mass index (BMI) ≥27.
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 |
|---|---|---|
| Dairy interventionAn 8-week high-protein, high-calcium, and vitamin D-enriched dairy intervention. | Dietary supplement | Dairy intervention group |
Primary outcome
Questionnaire-based subjective assessment
Time frame: The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Participants' subjective physical sensations, post-exercise fatigue, body image perceptions, and product use experience will be assessed using individual items from a self-administered questionnaire developed for this study. Questionnaire items may include Likert-scale items, categorical response options, and open-ended responses. Likert-scale items will be reported separately according to their original response scale, with the minimum and maximum values specified for each item. Categorical items will be reported as the number and percentage of participants selecting each response option. Open-ended responses will be summarized descriptively. No overall questionnaire total score will be calculated.
Handgrip Strength Test
Time frame: The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Participants performed the test in a standing position with their arms naturally hanging down. They held the handgrip dynamometer with one hand and applied maximal force continuously for at least 3 seconds. Each hand was tested three times, and the best value was recorded.
Push-Up Test
Time frame: The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Participants performed the push-up test on an exercise mat, with both hands placed shoulder-width apart to support the body. The fingers pointed forward, the elbows were fully extended, and the feet were approximately 10 cm apart. Male participants performed the test with support from the feet, whereas female participants performed the modified version with support from the knees. Participants were instructed to complete as many repetitions as possible while maintaining proper form. The test was terminated when the movement no longer met the required standard or could not be continued.
Curl-Up Test
Time frame: The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Participants lay supine on an exercise mat with both knees bent and feet flat on the floor. They performed curl-ups according to a fixed rhythm. Participants were instructed to complete as many repetitions as possible while maintaining proper form. When a participant failed to perform the movement correctly once, the examiner raised one hand and indicated the number "one." If the participant failed a second time, the examiner indicated the number "two." The test was terminated when the participant failed twice or completed 75 repetitions. If the participant was unable to maintain the required rhythm or perform the movement according to the standard criteria, the test was stopped.
Three-Minute Progressive Step-in-Place Test
Time frame: The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Participants performed step-in-place movements according to the instructions and raised their knees to the designated height. The test lasted for 3 minutes, with an initial cadence of 96 beats per minute, which was progressively increased each minute. During the test, heart rate was recorded using a heart rate monitor before exercise, during exercise, and during the post-exercise recovery period.
7 secondary outcomes
Body weight
Time frame: The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Body mass index
Time frame: The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Body fat percentage
Time frame: The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Fat mass
Time frame: The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Skeletal muscle mass
Time frame: The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Skeletal muscle percentage
Time frame: The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Waist-to-hip ratio
Time frame: The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 20 May 2026.
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Screening Protocol
Pain
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.
Yi-Ju Hsu, Professor principal investigator
National Taiwan Sport University
Questions about this trial
What is this clinical trial studying?
A study testing Dairy intervention in people with Healthy Volunteers, run by National Taiwan Sport University.
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 6 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: opening soon, as of the sponsor's last update on 20 May 2026. Status can change between updates, so confirm with the study contact before making plans.
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?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Yi-Ju Hsu (+886-3-328-3201 #2430, ruby780202@ntsu.edu.tw), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Questionnaire-based subjective assessment (time frame: The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.). The study lists 5 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 20 May 2026.