Glucose:Fructose Versus Glucose Carbohydrate Ingestion and Endurance Performance

NCT02031783 | Completed

• 1 other identifier: 13.09.PER
• Study Type: interventional
• Target: 74
• Locations: 1 country
• Sites: 1

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.

Conditions

Healthy

Outcome Measures

Primary Outcomes (1)

• TIME to finish a long distance triathlon

  Total time recorded at the end of the race 1 and race 2

Study Arms (2)

mixture of glucose and fructose

EXPERIMENTAL

mixture of glucose and fructose

Dietary Supplement: glucose

Glucose

ACTIVE COMPARATOR

Single glucose

Dietary Supplement: Mixture of glucose and fructose

Interventions

Mixture of glucose and fructose DIETARY_SUPPLEMENT

Glucose

glucose DIETARY_SUPPLEMENT

mixture of glucose and fructose

Eligibility Criteria

• Age: 18 Years - 60 Years
• Sex: male
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• 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

You may not qualify if:

• 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

Sponsors & Collaborators

• Société des Produits Nestlé (SPN): lead

Study Sites (1)

Massey University

Wellington, New Zealand

Location

Related Publications (1)

• Rowlands DS, Houltham SD. Multiple-Transportable Carbohydrate Effect on Long-Distance Triathlon Performance. Med Sci Sports Exerc. 2017 Aug;49(8):1734-1744. doi: 10.1249/MSS.0000000000001278.

  PMID: 28350714 DERIVED

MeSH Terms

Interventions

Fructose; Glucose

Intervention Hierarchy (Ancestors)

Hexoses; Monosaccharides; Sugars; Carbohydrates; Ketoses

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: DOUBLE
• Who Masked: PARTICIPANT, INVESTIGATOR
• Purpose: BASIC SCIENCE
• Intervention Model: CROSSOVER
• Sponsor Type: INDUSTRY
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: November 26, 2013
• First Posted: January 9, 2014
• Study Start: November 1, 2013
• Primary Completion: January 1, 2014
• Study Completion: January 1, 2014
• Last Updated: July 9, 2014

Record last verified: 2014-07

Locations

NZ (1)