Recruiting

CITRAPEAK

Sponsor:

Lindenwood University

Code:

NCT06672952

Conditions

Exercise Performance

Exercise Recovery

Cognitive Function

Nitric Oxide

Blood Flow

Eligibility Criteria

Sex: All

Age: 18 - 50

Healthy Volunteers: Accepted

Interventions

400 mg CITRAPEAK® (glucosyl-hesperidin) supplementation

Placebo

200 mg CITRAPEAK® (glucosyl-hesperidin) supplementation

Study Details

Brief summary:

The purpose of this study is to evaluate the dose-dependent effects of glucosyl-hesperidin (CITRAPEAK) supplementation on exercise performance, recovery indicators, blood flow, cognitive function, mood, sleep, and fuel utilization in recreationally active adults.

Conditions

Exercise Performance

Exercise Recovery

Cognitive Function

Nitric Oxide

Blood Flow

Study ID

NCT06672952

Start date

Apr 15, 2025

Status verified date

Dec, 2025

Completion date

Jan 1, 2026

Anticipated

Primary completion date

Jan 1, 2026

Anticipated

Eligibility Criteria

Eligibility Criteria

Sex: All

Age: 18 - 50

Healthy Volunteers: Accepted

Inclusion Criteria:

1. Participants who are between 18 - 50 years of age
2. Body mass index values will range from >25.0 < 30.0 kg/m2
3. The average body mass index for entire study cohort will be less than 27.0 kg/m2. As such an ongoing calculation of the recruited cohort's mean body mass index will be maintained and people will only be randomized into the study if the average cohort body mass index value does not exceed 27.0 kg/m2
4. Free-living and independent
5. In good health absent of being overweight or mildly obese with no other signs or symptoms of cardiovascular, respiratory, metabolic, immune, psychiatric, or musculoskeletal disease or disorders
6. Willingness to maintain consistent sleep duration the evening before study visits
7. Willing and able to agree to the requirements and restrictions of this study, be willing to give voluntary consent, and carry out all study-related procedures
8. Regular completion of at least 180 minutes of moderate to vigorous exercise per week for the past 6 months

Exclusion Criteria:

1. Not currently completing at least 180 minutes of moderate to vigorous exercise per week for the past 6 months
2. Positive medical history and/or is currently being treated for some form of heart disease, cardiovascular disease
3. Currently being treated for kidney disease, renal failure, or has dialysis performed on regular intervals
4. Has liver disease or some form of clinically diagnosed hepatic impairment
5. Diagnosed with having Type I or Type II diabetes (determined as fasting blood glucose > 126 mg/dL)
6. Diagnosed with or is being treated for some form of thyroid disease
7. Diagnosed with major affective disorder or other psychiatric disorder that required hospitalization in the prior year
8. Diagnosed with some form of immune disorder (i.e., HIV/AIDS)
9. History of cancer (except localized skin cancer without metastases or in situ cervical cancer within 5 years prior to screening visit).
10. Participant has an abnormality or obstruction of the gastrointestinal tract precluding swallowing (e.g., dysphagia) and digestion (e.g., known intestinal malabsorption, celiac disease, inflammatory bowel disease, chronic pancreatitis, steatorrhea)
11. Positive medical history for any neurological condition or neurological disease
12. Currently prescribed a statin drugs (i.e., Lipitor, Livalo, Crestor, Zocor, etc.) or any hypertension medications (i.e., Beta-blockers, ACE Inhibitors, Alpha blockers, Vasodilators, etc.)
13. Current smoker (average of > 1 pack per day within the past 3 months) has quit within the past six months. This includes all forms of nicotine
14. Intake of any drugs (prescribed or over the counter) or dietary supplements that are known or are purported to weight loss such as thermogenics, hydroxycitric acid, ephedra, capsaicin, etc.
15. Participants who are lactating, pregnant or planning to become pregnant
16. Have a known sensitivity or allergy to any of the study products
17. History of alcohol or substance abuse in the 12 months prior to screening
18. Receipt or use of an investigational product in another research study within 30 days of beginning the study protocol
19. Any orthopedic limitation that would prevent participation in a general fitness program
20. Any condition or abnormality that, in the opinion of the investigator, would compromise the safety of the participant or the quality of the study data

Study Design

Enrollment

60 participants

Anticipated

Allocation

Randomized

Intervention Model

Parallel Assignment

Primary purpose

Treatment

Interventions and Outcome Measures

Arms

placebo comparator: Placebo

Participants in this arm will receive a placebo supplement consisting of 400 mg of cellulose per day. The placebo is designed to match the appearance and dosage form of the active interventions, allowing for blinding in the study.

experimental: 200 mg CITRAPEAK® (glucosyl-hesperidin) supplementation

Participants in this arm will receive a total of 200 mg of glucosyl-hesperidin (CITRAPEAK®) supplementation per day, along with an additional 200 mg of cellulose. This will provide a daily dosage of 400 mg, maintaining blinding to ensure the placebo effect is accounted for.

experimental: 400 mg CITRAPEAK® (glucosyl-hesperidin) supplementation

Participants in this arm will receive a total of 400 mg of glucosyl-hesperidin (CITRAPEAK®) supplementation per day. This higher dose is intended to evaluate its effects on exercise performance, recovery, and cognitive function compared to the placebo and lower dose.

Interventions

400 mg CITRAPEAK® (glucosyl-hesperidin) supplementation

The active intervention consists of 400 mg of glucosyl-hesperidin (CITRAPEAK®) in capsule form.

Placebo

The placebo intervention consists of 400 mg/day of cellulose in capsule form, matching the appearance and dosage of active interventions.

200 mg CITRAPEAK® (glucosyl-hesperidin) supplementation

The active intervention includes 200 mg of glucosyl-hesperidin (CITRAPEAK®) and an additional 200 mg of cellulose in capsule form.

Primary outcome measure

  • Change from Baseline in Peak VO2 at Week 8 Following Glucosyl-Hesperidin (CITRAPEAK) Supplementation [ Time Frame: Baseline and Week 8 ]
  • Change from Baseline in Wingate Anaerobic Test Peak Anaerobic Power at Week 8 Following Glucosyl-Hesperidin (CITRAPEAK) Supplementation [ Time Frame: Baseline and Week 8 ]
  • Change from Baseline in Wingate Anaerobic Test Mean Anaerobic Power at Week 8 Following Glucosyl-Hesperidin (CITRAPEAK) Supplementation [ Time Frame: Baseline and Week 8 ]
  • Change from Baseline in Fatigue Rate at Week 8 Following Glucosyl-Hesperidin (CITRAPEAK) Supplementation [ Time Frame: Baseline and Week 8 ]
  • Change from Baseline in Perceived Indicators of Recovery, Training Readiness, Soreness, and Overall Feel Using Visual Analog Scales (VAS) at Week 8 Following Glucosyl-Hesperidin (CITRAPEAK) Supplementation [ Time Frame: Baseline and Week 8 ]
  • Change from Baseline in Brachial Artery Blood Flow Measured 0, 30, and 60 Minutes After Acute and Prolonged Ingestion of Glucosyl-Hesperidin (CITRAPEAK) [ Time Frame: Baseline and Week 8, measured at 0, 30, and 60 minutes post-ingestion. ]

Central Contacts and Locations

Central contacts

Locations

Lindenwood University

Recruiting

Saint Charles, Missouri, United States, 63301

Contacts

Principal Investigator:

Chad M Kerksick, PhD

More Information

Sponsor

Lindenwood University

Last update posted

Dec 12, 2025

Last verified

Dec, 2025

Keywords

  • exercise performance
  • aerobic capacity
  • anaerobic power
  • mood
  • nitric oxide
  • cognitive function
  • glucosyl-hesperidin
  • training readiness
  • fuel utilization
  • endothelial function

Trial information was received from ClinicalTrials.gov and was last updated on 2026-09-09. This information was provided to ClinicalTrials.gov by Lindenwood University on 2025-12-12.