Effects of Sustamine(TM) on Cycling Time Trial Performance

Effects of Sustamine(TM) on Cycling Time Trial Performance Following Prolonged Cycling

Status

UNKNOWN

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT01623947

Enrollment

Registered

2012-06-20

Start date

2012-06-30

Completion date

2013-05-31

Last updated

2013-04-19

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Healthy

Keywords

glutamine, cycling performance, mental function

Brief summary

Acute supplementation of Sustamine(TM), a combination of two amino acids, will improve cycling performance and mental acuity in a dose-dependent response.

Interventions

DIETARY_SUPPLEMENTPlacebo Beverage

1400 ml flavored, colored, artificially sweetened, non-caloric beverage divided into 6 servings provided prior to and during the 2.5 hr interval ride.

DIETARY_SUPPLEMENT2.8 g Sustamine Beverage

1400 ml flavored, colored, artificially sweetened, beverage containing 2.8 g Sustamine divided into 6 servings provided prior to and during the 2.5 hr interval ride.

DIETARY_SUPPLEMENT19.6 g Sustamine Beverage

1400 ml flavored, colored, artificially sweetened, beverage containing 19.6 g Sustamine divided into 6 servings provided prior to and during the 2.5 hr interval ride.

Study design

Allocation

RANDOMIZED

Intervention model

CROSSOVER

Primary purpose

BASIC_SCIENCE

Masking

TRIPLE (Subject, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender

ALL

Age

20 Years to 45 Years

Healthy volunteers

Yes

Inclusion criteria

* Competitive cyclist or triathlete * Male (VO2max \>= 55 ml/kg/min) or Female (VO2max \>= 45 ml/kg/min) * Healthy * Blood pressure below 140/90 * Non-smoker

Exclusion criteria

* Anti-depressant medications * Inconsistent regular medications * Consumption performance-enhancing substances * Type I or Type II diabetes * Renal, hepatic or cardiac disease Current infectious disease

Design outcomes

Primary

Measure	Time frame	Description
Improved Time Trial Performance	After 2.5 hr interval cycling	Participants will perform an interval ride on a cycling ergometer for 2.5 hr. Intervals will be at 50% or 75% of the participant's VO2max. The time trial will consist of 4 km up a constant grade.

Secondary

Measure	Time frame	Description
Improved Mental Function	After time trial	Mental function will be assessed using a computer-based Stroop Test. Measurements will be collected before treatment, before exercise and after exercise.

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026