Knowledge, Attitudes, PracticeNCT05514808
An Intervention to Improve Knowledge on Dietary Supplements Among Varsity Athletes
A study testing Nutrition education modules in people with Knowledge, Attitudes, Practice, run by University of Guelph at 1 site in Canada.
Trial summary
The aim of this project is to increase knowledge on and influence intention (and related determinants) toward the use of dietary supplements in populations at risk for doping such as university student athletes. Read more about this study
- Who is it for?
- Ages 18 years and olderHealthy volunteers can take part
- Conditions the study is for
- Knowledge, Attitudes, Practice
- What is being tested?
- Nutrition education modules
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 30 participants
- Where
- 1 siteCanada
- Study dates
- 1 May 2023to 30 Aug 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 18 years and older
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- current University of Guelph-registered part-time or full-time student
- fluent in English
- varsity athlete
Who cannot join
- not a University of Guelph-registered student
- not fluent in English
- not a varsity athlete
Trial locations and contacts
1 site in 1 country.
About this study
Official title: A Theory of Planned Behavior-based Intervention to Influence Intentions and Related Determinants for Dietary Supplement Use Among Varsity Athletes at the University of Guelph
The aim of this project is to increase knowledge on and influence intention (and related determinants) toward the use of dietary supplements in populations at risk for doping such as university student athletes. Our objectives are to increase athletes' knowledge on dietary supplements, change their attitude, subjective norms and perceived behavioural control toward the use of these supplements, increase their body appreciation and thus increase their intention to take nutrients from diet first before considering dietary supplements. We are proposing the conceptualization, implementation, and evaluation of a nutrition education program on dietary supplements targeting varsity athletes at universities across Ontario.
Participants will be recruited from varsity teams at the University of Guelph. The intervention will be tested for validity and reliability and implemented online through Courselink modules over 4 weeks. Participants will be randomly assigned to a control or intervention group, using a randomized control trial approach. Each week, participants will learn about a topic related to nutrition, health and values-based ethics of clean sport. The intervention group will receive additional information on dietary supplements, their benefits and their risks. Doping and body appreciation and their links to the use of dietary supplements will also be covered in this group. A questionnaire assessing outcome objectives will be administered before and at the end of the intervention as well as 3 months post-intervention. Among the different components covered in the questionnaire, one section will assess knowledge on health, sports nutrition, and dietary supplements; and another will gather responses to statements reflecting the different theory of planned behaviour (TPB) cognitive constructs.
Read the detailed description
High prevalence rates of dietary supplement use are consistently reported across sports disciplines in the athletic population, and this behaviour can be problematic. The use of non-prohibited dietary supplements and of doping substances are interrelated: 1) some dietary supplements are ''contaminated'' with substances prohibited by the World Anti-Doping Agency, leading to cases of inadvertent doping; and 2) supplement users are more favourable toward and more likely to engage in doping use. Many athletes derive their supplement-related information from less reliable sources as shown in a pilot study conducted by our research team on supplementation practices of varsity athletes at the University of Guelph. Also, 58.6% of those athletes mentioned wanting to become more knowledgeable about supplements. Given the findings from our pilot study, the association between dietary supplement use and risk for doping and the frequent reporting of doping rule violation among competing athletes across all types of sports in Canada, it is imperative to educate athletes about the appropriate use of dietary supplements.
The aim of this project is to increase knowledge on and influence intention (and related determinants) toward the use of dietary supplements in populations at risk for doping such as university student athletes. Our objectives are to increase athletes' knowledge on dietary supplements, change their attitude, subjective norms and perceived behavioural control toward the use of these supplements, increase their body appreciation and thus increase their intention to take nutrients from diet first before considering dietary supplements. We are proposing the conceptualization, implementation, and evaluation of a nutrition education program on dietary supplements targeting varsity athletes at universities across Ontario.
Participants will be recruited from varsity teams at the University of Guelph. The intervention will be tested for validity and reliability and implemented online through Courselink modules over 4 weeks. Participants will be randomly assigned to a control or intervention group, using a randomized control trial approach. Each week, participants will learn about a topic related to nutrition, health and values-based ethics of clean sport. The intervention group will receive additional information on dietary supplements, their benefits and their risks. Doping and body appreciation and their links to the use of dietary supplements will also be covered in this group. A questionnaire assessing outcome objectives will be administered before and at the end of the intervention as well as 3 months post-intervention. Among the different components covered in the questionnaire, one section will assess knowledge on health, sports nutrition, and dietary supplements; and another will gather responses to statements reflecting the different theory of planned behaviour (TPB) cognitive constructs.
This study will advance knowledge on dietary supplements and will support the integration of reliable educational materials on supplements into the training schedules of varsity athletes at the University of Guelph. Findings from this project will also guide the development of dietary supplement-focused educational programs at national and international levels to advance the fight against doping in sports.
- Conditions
- Knowledge, Attitudes, Practice
- Being tested
- Nutrition education modules
- Medical subject headings
- Behavior
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Nutrition education modulesOther
Nutrition education modules on sports nutrition and dietary supplements over a period of 4 weeks (1 module/week)
| Study group | Role | What they receive |
|---|---|---|
| Nutrition education intervention group | Active comparator | Each week, participants will learn about a topic related to nutrition, health and values-based ethics of clean sport. The intervention group will also receive information on dietary supplements, their benefits and their risks. Doping and body appreciation and their links to the use of dietary supplements will also be covered in this group. The duration of the intervention is 4 weeks; 1 module to be released every week. Receives: Other: Nutrition education modules |
| Control group | No intervention | No intervention to be received during the 4-week period. |
What is being measured
The primary outcome is the main question the study is designed to answer.
Percent of participants with correct answers to questions in the questionnaire assessing their knowledge on dietary supplements, their benefits and their risks
knowledge on dietary supplements
Measured: 4 weeks
Secondary outcomes (2)
Change in participants' theory of planned behaviour cognitive constructs with respect to the use of dietary supplements, as assessed in the questionnaire
Theory of planned behaviour cognitive constructs: intention, attitude, subjective norms, and perceived behavioural control with respect to dietary supplement use (Likert scale 1 (strongly disagree) to 5 (strongly agree))
Measured: 4 weeks
Percent of participants with improved body image and body appreciation, as assessed in the questionnaire, in relation to the use of dietary supplements
The interaction between dietary supplement use, body image and body appreciation
Measured: 4 weeks
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted24 Aug 2022
- Study start1 May 2023
- Primary completion30 Jun 2023
- Study completion30 Aug 2023
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Knowledge, Attitudes, PracticeStudies 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
- Other
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 30 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of Guelph
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Dalia El Khoury, University of Guelph
- Investigators
- Dalia El Khoury, PhD RD, Principal investigator, University of Guelph
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05514808
- Sponsor's protocol ID
- 22-03-003
- Status last verified
- May 2024
- First submitted
- 16 Aug 2022
- Last updated
- 9 May 2024
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 9 May 2024. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Theory of Planned Behavior-based Intervention to Influence Intentions and Related Determinants for Dietary Supplement Use Among Varsity Athletes at the University of Guelph
- ClinicalTrials.gov ID
- NCT05514808
- Acronym / sponsor ID
- 22-03-003
- Conditions
- Knowledge, Attitudes, Practice
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 30 participants (actual)
- Lead sponsor
- University of GuelphUniversity, hospital or other
- Study start
- 1 May 2023 (actual)
- Primary completion
- 30 Jun 2023 (actual)
- Study completion
- 30 Aug 2023 (actual)
- First posted
- 24 Aug 2022 (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 aim of this project is to increase knowledge on and influence intention (and related determinants) toward the use of dietary supplements in populations at risk for doping such as university student athletes. Our objectives are to increase athletes' knowledge on dietary supplements, change their attitude, subjective norms and perceived behavioural control toward the use of these supplements, increase their body appreciation and thus increase their intention to take nutrients from diet first before considering dietary supplements. We are proposing the conceptualization, implementation, and evaluation of a nutrition education program on dietary supplements targeting varsity athletes at universities across Ontario.
Participants will be recruited from varsity teams at the University of Guelph. The intervention will be tested for validity and reliability and implemented online through Courselink modules over 4 weeks. Participants will be randomly assigned to a control or intervention group, using a randomized control trial approach. Each week, participants will learn about a topic related to nutrition, health and values-based ethics of clean sport. The intervention group will receive additional information on dietary supplements, their benefits and their risks. Doping and body appreciation and their links to the use of dietary supplements will also be covered in this group. A questionnaire assessing outcome objectives will be administered before and at the end of the intervention as well as 3 months post-intervention. Among the different components covered in the questionnaire, one section will assess knowledge on health, sports nutrition, and dietary supplements; and another will gather responses to statements reflecting the different theory of planned behaviour (TPB) cognitive constructs.
Detailed description
High prevalence rates of dietary supplement use are consistently reported across sports disciplines in the athletic population, and this behaviour can be problematic. The use of non-prohibited dietary supplements and of doping substances are interrelated: 1) some dietary supplements are ''contaminated'' with substances prohibited by the World Anti-Doping Agency, leading to cases of inadvertent doping; and 2) supplement users are more favourable toward and more likely to engage in doping use. Many athletes derive their supplement-related information from less reliable sources as shown in a pilot study conducted by our research team on supplementation practices of varsity athletes at the University of Guelph. Also, 58.6% of those athletes mentioned wanting to become more knowledgeable about supplements. Given the findings from our pilot study, the association between dietary supplement use and risk for doping and the frequent reporting of doping rule violation among competing athletes across all types of sports in Canada, it is imperative to educate athletes about the appropriate use of dietary supplements.
The aim of this project is to increase knowledge on and influence intention (and related determinants) toward the use of dietary supplements in populations at risk for doping such as university student athletes. Our objectives are to increase athletes' knowledge on dietary supplements, change their attitude, subjective norms and perceived behavioural control toward the use of these supplements, increase their body appreciation and thus increase their intention to take nutrients from diet first before considering dietary supplements. We are proposing the conceptualization, implementation, and evaluation of a nutrition education program on dietary supplements targeting varsity athletes at universities across Ontario.
Participants will be recruited from varsity teams at the University of Guelph. The intervention will be tested for validity and reliability and implemented online through Courselink modules over 4 weeks. Participants will be randomly assigned to a control or intervention group, using a randomized control trial approach. Each week, participants will learn about a topic related to nutrition, health and values-based ethics of clean sport. The intervention group will receive additional information on dietary supplements, their benefits and their risks. Doping and body appreciation and their links to the use of dietary supplements will also be covered in this group. A questionnaire assessing outcome objectives will be administered before and at the end of the intervention as well as 3 months post-intervention. Among the different components covered in the questionnaire, one section will assess knowledge on health, sports nutrition, and dietary supplements; and another will gather responses to statements reflecting the different theory of planned behaviour (TPB) cognitive constructs.
This study will advance knowledge on dietary supplements and will support the integration of reliable educational materials on supplements into the training schedules of varsity athletes at the University of Guelph. Findings from this project will also guide the development of dietary supplement-focused educational programs at national and international levels to advance the fight against doping in sports.
Study design
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Nutrition education intervention group | Active comparator | Other: Nutrition education modulesEach week, participants will learn about a topic related to nutrition, health and values-based ethics of clean sport. The intervention group will also receive information on dietary supplements, their benefits and their risks. Doping and body appreciation and their links to the use of dietary supplements will also be covered in this group. The duration of the intervention is 4 weeks; 1 module to be released every week. |
| Control group | No intervention | –No intervention to be received during the 4-week period. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (3 listed)
- current University of Guelph-registered part-time or full-time student
- fluent in English
- varsity athlete
Key exclusion criteria (3 listed)
- not a University of Guelph-registered student
- not fluent in English
- not a varsity athlete
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 |
|---|---|---|
| Nutrition education modulesNutrition education modules on sports nutrition and dietary supplements over a period of 4 weeks (1 module/week) | Other | Nutrition education intervention group |
Primary outcome
Percent of participants with correct answers to questions in the questionnaire assessing their knowledge on dietary supplements, their benefits and their risks
Time frame: 4 weeks
knowledge on dietary supplements
2 secondary outcomes
Change in participants' theory of planned behaviour cognitive constructs with respect to the use of dietary supplements, as assessed in the questionnaire
Time frame: 4 weeks
Percent of participants with improved body image and body appreciation, as assessed in the questionnaire, in relation to the use of dietary supplements
Time frame: 4 weeks
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 9 May 2024.
- Individual participant dataSharing planned: No
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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.
Dalia El Khoury, PhD RD principal investigator
University of Guelph
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Nutrition education modules in people with Knowledge, Attitudes, Practice, run by University of Guelph at 1 site in Canada.
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 9 May 2024. 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 Canada. 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?
Percent of participants with correct answers to questions in the questionnaire assessing their knowledge on dietary supplements, their benefits and their risks (time frame: 4 weeks). 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 9 May 2024; AzTrials last refreshed its copy on 3 Nov 2026.