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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT03294642
Other study ID # 18104
Secondary ID
Status Completed
Phase N/A
First received
Last updated
Start date September 29, 2017
Est. completion date September 29, 2019

Study information

Verified date September 2017
Source University of Illinois at Urbana-Champaign
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical 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. 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.


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."


Recruitment information / eligibility

Status Completed
Enrollment 12
Est. completion date September 29, 2019
Est. primary completion date September 29, 2019
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 20 Years to 40 Years
Eligibility Inclusion Criteria:

- 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

Exclusion Criteria:

- 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

- 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

Study Design


Related Conditions & MeSH terms


Intervention

Dietary Supplement:
Potatoes
Pureed russet potatoes will be used as a carbohydrate supplement for participants during one of the three cycling challenges.
Carbohydrate Gel
Commercially available PowerBar PowerGel will be used for the carbohydrate gel condition during one of the three cycling challenges.
Water
Water will be used as a control during one of the three cycling challenges (participants will not receive any carbohydrate supplementation).

Locations

Country Name City State
United States Freer Hall Urbana Illinois

Sponsors (2)

Lead Sponsor Collaborator
University of Illinois at Urbana-Champaign Alliance for Potato Research and Education

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary 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. 1 year
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