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Glucose:Fructose Versus Glucose Carbohydrate Ingestion and Endurance Performance

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ClinicalTrials.gov Identifier: NCT02031783
Recruitment Status : Completed
First Posted : January 9, 2014
Last Update Posted : July 9, 2014
Sponsor:
Information provided by (Responsible Party):
Nestlé

Brief Summary:
The primary objective is to show that multiple transportable carbohydrate ingestion is more effective in improving endurance performance compared to single transportable carbohydrate ingestion.

Condition or disease Intervention/treatment Phase
Healthy Dietary Supplement: Mixture of glucose and fructose Dietary Supplement: glucose Not Applicable

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 74 participants
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Double (Participant, Investigator)
Primary Purpose: Basic Science
Study Start Date : November 2013
Actual Primary Completion Date : January 2014
Actual Study Completion Date : January 2014

Resource links provided by the National Library of Medicine


Arm Intervention/treatment
Experimental: mixture of glucose and fructose
mixture of glucose and fructose
Dietary Supplement: glucose
Active Comparator: Glucose
Single glucose
Dietary Supplement: Mixture of glucose and fructose



Primary Outcome Measures :
  1. TIME to finish a long distance triathlon [ Time Frame: Total time recorded at the end of the race 1 and race 2 ]


Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 60 Years   (Adult)
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

  • Males aged 18 to 60 years
  • A history of competitive triathlon performance (≥ 2 years)
  • Participation in at least four competitive triathlon events within the past 2 years
  • Be in regular training for triathlon events
  • A personal best time for a standard ½ Ironman race (1.9 km swim, 90 km cycle, 21.1 km run) in the last year of either:

    • ≤ 6 h 00 min, for men aged 18-40 years
    • or ≤6 h 05 min for men aged 40-50 years
    • or ≤6 h 20 min for men aged 50-60 years
  • Alternatively, if not competed in ½ Ironman in the last year, at least one standard distance triathlon (1.5 km swim, 40 km cycle, 10 km run) within the last 12 months:

    • ≤2 h 13 min, for men aged 18-40 years
    • or ≤2 h 18 min for men aged 40-50 years
    • or ≤2 h 23 min for men aged 50-60 years
  • Available to compete in the ½ Ironman events and complete all study requirements
  • Experienced in using carbohydrate supplementation, as gels, bars, and drinks in training/racing, specifically at rates ≥60-90g/h)
  • Experience of specific formulations may include both or only multiple and single transportable carbohydrates, thus a full assessment would be made prior to recruitment to ensure balance during randomization and account for any association with the primary outcome
  • Obtained his (or his legal representative's) informed consent.

Exclusion Criteria:

  • Failure to meet health requirements defined in the Health Questionnaire
  • Prior known fructose intolerance
  • Wheat intolerance or other precluding food or packaging-related allergies
  • An existing injury affecting ability to race to best ability
  • A chronic injury that may affect ability to complete the races
  • Unable to carry out performance assessments and questionnaires correctly
  • Unable to tolerate the treatment during the familiarization sessions
  • Taking medications thought to interfere with the study outcomes
  • Currently participating or having participated in another clinical study during the last four weeks prior to the beginning of this study

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT02031783


Locations
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New Zealand
Massey University
Wellington, New Zealand
Sponsors and Collaborators
Nestlé

Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
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Responsible Party: Nestlé
ClinicalTrials.gov Identifier: NCT02031783     History of Changes
Other Study ID Numbers: 13.09.PER
First Posted: January 9, 2014    Key Record Dates
Last Update Posted: July 9, 2014
Last Verified: July 2014