Exercise PerformanceNCT03294642
Potato Ingestion and Time-trial Performance
A study testing Potatoes, Carbohydrate Gel and Water in people with Exercise Performance, run by University of Illinois at Urbana-Champaign at 1 site in United States.
Trial summary
This research study evaluates the feasibility and appropriateness of potatoes as an ergogenic aid in comparison to the currently promoted sports gels during a cycling challenge and time trial. Read more about this study
- Who is it for?
- Ages 20 to 40 yearsHealthy volunteers can take part
- Conditions the study is for
- Exercise Performance
- What is being tested?
- Potatoes, Carbohydrate Gel and Water
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 12 participants
- Where
- 1 siteUnited States
- Study dates
- 29 Sep 2017to 29 Sep 2019
- 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 20 to 40 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- Male or female
- ≥150 km/wk of cycling mileage
- ≥6 months of prior training history
- VO2peak values ≥45 ml/kg/min for females and ≥50 ml/kg/min for males
- Aged between 20-40 years
Who cannot join
- Chronic Smoking or tobacco use
- Active cardiovascular disease
- Diabetes Mellitus or other metabolic disorders
- Liver kidney, or urinary disease
- Musculoskeletal/Orthopedic disorders (e.g., osteoarthritis, rheumatoid arthritis, tendinitis, gout, fibromyalgia, patellar tendinopathy, or chronic low back pain)
- Neuromuscular disorders
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- hypertension
- Diagnosed GI tract diseases
- Heart Disease
- Bleeding or clotting disorders
- Neurological disease
- Epilepsy
- Respiratory disease
- Pregnancy
- Contraindications for exercise
- <150 km/wk of cycling mileage
- <6 months of prior training history
- VO2peak values <45 ml/kg/min for females and <50 ml/kg/min for males
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Ingestion of Potatoes as a Nutritional Strategy to Improve Cycling Time-trial Performance in Endurance Trained Cyclists
This research study evaluates the feasibility and appropriateness of potatoes as an ergogenic aid in comparison to the currently promoted sports gels during a cycling challenge and time trial. Using a crossover design, trained cyclists will complete three separate cycling challenges and subsequent time trials in which they will consume either potatoes, commercially available sports gels, or water only.
Read the detailed description
The metabolic demands created by endurance activities, which include muscle and liver glycogen depletion as well as losses in body fluids and electrolytes, are significant limitations to the performance potential of the athlete. For this reason, a well-supported recommendation exists for such athletes to consume a carbohydrate formula, in particular, one containing electrolytes during their activity.
Currently, most commercially available exercise-nutrition products for use in endurance activities come at relatively high costs to the athlete. Moreover, the ingredients used within this market vary and could therefore hinder their effectiveness. For example, Fermentable Oligosaccharides Disaccharides Monosaccharides and Polyols (FODMAPs) potentially present in common sports foods (i.e. excess fructose) are known to alter gastrointestinal (GI) function in some individuals. Indeed, 25-70% of endurance athletes experience GI symptoms during exercise. Given the prevalence of exercise induced GI discomfort in this population, it is possible that GI symptoms limit the adherence to nutritional recommendations during exercise. Therefore identification of a targeted nutrition strategy that maximizes GI effectiveness and dietary adherence is warranted.
An alternative to the commercially available sports foods are whole foods. Specifically, white potatoes, which have a high GI index, indicates that their carbohydrate content is readily available. Additionally, potatoes naturally contain potassium, an important electrolyte. Because of these characteristics, potatoes provide the potential to be a low-cost alternative, and merit investigation. To this point, we know of no studies that have explored the effectiveness of white potatoes as an ergogenic aid. Therefore, the purpose of this study is to examine how capable potatoes are at off-setting the losses in muscle and liver glycogen and electrolytes compared to the current products available on the market, i.e. "sports gels."
- Conditions
- Exercise Performance
- Being tested
- Potatoes, Carbohydrate Gel, Water
- Keywords
- exercise, FODMAP, gastrointestinal, endurance, cycling
- Medical subject headings
- Motor Activity
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
PotatoesDietary supplement
Pureed russet potatoes will be used as a carbohydrate supplement for participants during one of the three cycling challenges.
Carbohydrate GelDietary supplement
Commercially available PowerBar PowerGel will be used for the carbohydrate gel condition during one of the three cycling challenges.
WaterDietary supplement
Also called Control
Water will be used as a control during one of the three cycling challenges (participants will not receive any carbohydrate supplementation).
| Study group | Role | What they receive |
|---|---|---|
| Trial 1 | Experimental | Water Intervention: In one of the 3 cycling trials, participants will receive only water and no carbohydrate supplementation during the 2 hour cycling challenge. Receives: Dietary Supplement: Water |
| Trial 2 | Experimental | Carbohydrate Gel Intervention: In one of the 3 cycling trials, participants will receive carbohydrate supplementation in the form of commercially available gels (15g every 15 minutes) during the 2 hour cycling challenge. Receives: Dietary Supplement: Carbohydrate Gel |
| Trial 3 | Experimental | Potatoes Intervention: In one of the 3 cycling trials, participants will receive carbohydrate supplementation in the form of pureed russet potato (15g every 15 minutes) during the 2 hour cycling challenge. Receives: Dietary Supplement: Potatoes |
What is being measured
The primary outcome is the main question the study is designed to answer.
Time trial performance measured in minutes
Comparison of time trial performance times between potatoes and sports gel conditions to determine effectiveness of potatoes as an ergogenic aid.
Measured: 1 year
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted27 Sep 2017
- Study start29 Sep 2017
- Primary completion29 Sep 2019
- Study completion29 Sep 2019
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Exercise 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
- Other
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- None (open label)
- Enrolment
- 12 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of Illinois at Urbana-Champaign
- Sponsor type
- University, hospital or other
- Collaborators
- Alliance for Potato Research and Education
- Responsible party
- Sponsor
- Investigators
- Nicholas A Burd, Ph.D, Principal investigator, University of Illinois at Urbana-Champaign, Department of Kinesiology
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03294642
- Sponsor's protocol ID
- 18104
- Status last verified
- Sep 2017
- First submitted
- 19 Sep 2017
- Last updated
- 9 Oct 2019
- Results posted
- No
- Data monitoring committee
- Yes
- 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 Oct 2019. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Ingestion of Potatoes as a Nutritional Strategy to Improve Cycling Time-trial Performance in Endurance Trained Cyclists
- ClinicalTrials.gov ID
- NCT03294642
- Acronym / sponsor ID
- 18104
- Conditions
- Exercise Performance
- Keywords
- exercise, FODMAP, gastrointestinal, endurance, cycling
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 12 participants (actual)
- Lead sponsor
- University of Illinois at Urbana-ChampaignUniversity, hospital or other
- Collaborators
- Alliance for Potato Research and Education
- Study start
- 29 Sep 2017 (actual)
- Primary completion
- 29 Sep 2019 (actual)
- Study completion
- 29 Sep 2019 (actual)
- First posted
- 27 Sep 2017 (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 research study evaluates the feasibility and appropriateness of potatoes as an ergogenic aid in comparison to the currently promoted sports gels during a cycling challenge and time trial. Using a crossover design, trained cyclists will complete three separate cycling challenges and subsequent time trials in which they will consume either potatoes, commercially available sports gels, or water only.
Detailed description
The metabolic demands created by endurance activities, which include muscle and liver glycogen depletion as well as losses in body fluids and electrolytes, are significant limitations to the performance potential of the athlete. For this reason, a well-supported recommendation exists for such athletes to consume a carbohydrate formula, in particular, one containing electrolytes during their activity.
Currently, most commercially available exercise-nutrition products for use in endurance activities come at relatively high costs to the athlete. Moreover, the ingredients used within this market vary and could therefore hinder their effectiveness. For example, Fermentable Oligosaccharides Disaccharides Monosaccharides and Polyols (FODMAPs) potentially present in common sports foods (i.e. excess fructose) are known to alter gastrointestinal (GI) function in some individuals. Indeed, 25-70% of endurance athletes experience GI symptoms during exercise. Given the prevalence of exercise induced GI discomfort in this population, it is possible that GI symptoms limit the adherence to nutritional recommendations during exercise. Therefore identification of a targeted nutrition strategy that maximizes GI effectiveness and dietary adherence is warranted.
An alternative to the commercially available sports foods are whole foods. Specifically, white potatoes, which have a high GI index, indicates that their carbohydrate content is readily available. Additionally, potatoes naturally contain potassium, an important electrolyte. Because of these characteristics, potatoes provide the potential to be a low-cost alternative, and merit investigation. To this point, we know of no studies that have explored the effectiveness of white potatoes as an ergogenic aid. Therefore, the purpose of this study is to examine how capable potatoes are at off-setting the losses in muscle and liver glycogen and electrolytes compared to the current products available on the market, i.e. "sports gels."
Study design
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- None (open label)
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| Trial 1 | Experimental | Dietary Supplement: WaterWater Intervention: In one of the 3 cycling trials, participants will receive only water and no carbohydrate supplementation during the 2 hour cycling challenge. |
| Trial 2 | Experimental | Dietary Supplement: Carbohydrate GelCarbohydrate Gel Intervention: In one of the 3 cycling trials, participants will receive carbohydrate supplementation in the form of commercially available gels (15g every 15 minutes) during the 2 hour cycling challenge. |
| Trial 3 | Experimental | Dietary Supplement: PotatoesPotatoes Intervention: In one of the 3 cycling trials, participants will receive carbohydrate supplementation in the form of pureed russet potato (15g every 15 minutes) during the 2 hour cycling challenge. |
Who may qualify
- Ages
- 20 to 40 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (5 listed)
- Male or female
- ≥150 km/wk of cycling mileage
- ≥6 months of prior training history
- VO2peak values ≥45 ml/kg/min for females and ≥50 ml/kg/min for males
- Aged between 20-40 years
Key exclusion criteria (18 listed)
- Chronic Smoking or tobacco use
- Active cardiovascular disease
- Diabetes Mellitus or other metabolic disorders
- Liver kidney, or urinary disease
- Musculoskeletal/Orthopedic disorders (e.g., osteoarthritis, rheumatoid arthritis, tendinitis, gout, fibromyalgia, patellar tendinopathy, or chronic low back pain)
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 |
|---|---|---|
| PotatoesPureed russet potatoes will be used as a carbohydrate supplement for participants during one of the three cycling challenges. | Dietary supplement | Trial 3 |
| Carbohydrate GelCommercially available PowerBar PowerGel will be used for the carbohydrate gel condition during one of the three cycling challenges. | Dietary supplement | Trial 2 |
| WaterAlso: ControlWater will be used as a control during one of the three cycling challenges (participants will not receive any carbohydrate supplementation). | Dietary supplement | Trial 1 |
Primary outcome
Time trial performance measured in minutes
Time frame: 1 year
Comparison of time trial performance times between potatoes and sports gel conditions to determine effectiveness of potatoes as an ergogenic aid.
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 Oct 2019.
- 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.
Nicholas A Burd, Ph.D principal investigator
University of Illinois at Urbana-Champaign, Department of Kinesiology
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Potatoes, Carbohydrate Gel and Water in people with Exercise Performance, run by University of Illinois at Urbana-Champaign at 1 site in United States.
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 5 inclusion and 18 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 Oct 2019. 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 United States. 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?
Time trial performance measured in minutes (time frame: 1 year). 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 Oct 2019.