An Intervention to Improve Knowledge on Dietary Supplements Among Varsity Athletes

NCT ID: NCT05514808

Last Updated: 2024-05-09

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 30 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2023-05-01
• Study Completion Date: 2023-08-30

Brief 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. 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.

Conditions

Knowledge, Attitudes, Practice

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: OTHER
• Blinding Strategy: NONE

Study Groups

Nutrition education intervention group

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.

Group Type: ACTIVE_COMPARATOR

Nutrition education modules

Intervention Type: OTHER

Nutrition education modules on sports nutrition and dietary supplements over a period of 4 weeks (1 module/week)

Control group

No intervention to be received during the 4-week period.

Group Type: NO_INTERVENTION

No interventions assigned to this group

Interventions

Nutrition education modules

Nutrition education modules on sports nutrition and dietary supplements over a period of 4 weeks (1 module/week)

Intervention Type: OTHER

Eligibility Criteria

Inclusion Criteria

• current University of Guelph-registered part-time or full-time student
• fluent in English
• varsity athlete

Exclusion Criteria

• not a University of Guelph-registered student
• not fluent in English
• not a varsity athlete

• Minimum Eligible Age: 18 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

University of Guelph

OTHER

Sponsor Role: lead

Responsible Party

Dalia El Khoury

Associate Professor

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Dalia El Khoury, PhD RD

Role: PRINCIPAL_INVESTIGATOR

University of Guelph

Locations

University of Guelph

Guelph, Ontario, Canada

Countries

Canada

Other Identifiers

22-03-003

Identifier Type: -

Identifier Source: org_study_id