Carbohydrate Feeding Frequency, Muscle Glycogen and Exercise Capacity in Runners

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

7 participants

Study Classification

INTERVENTIONAL

Study Start Date

2018-10-14

Study Completion Date

2019-04-16

Brief Summary

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The aim of this study is to investigate the effects of regular sucrose feeds compared to a single large bolus given late in exercise, on muscle glycogen utilisation, exercise capacity and other markers of metabolism during running

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Detailed Description

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Conditions

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Exercise

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

DOUBLE

Participants Investigators

Study Groups

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Regular carbohydrate feeding

Ingestion of 75 g sucrose, given in regular doses for the first 75 minutes of exercise during a time to exhaustion run

Group Type ACTIVE_COMPARATOR

Regular carbohydrate feeding

Intervention Type OTHER

60 ml of water with 5 g sucrose given every 5 minutes 14 times up until 70 minutes followed by 5 g sucrose after 75 minutes in a 250 ml solution

Single carbohydrate bolus

Ingestion of 75 g sucrose, given in a single bolus after 75 minutes of exercise, during a time to exhaustion run

Group Type ACTIVE_COMPARATOR

Single carbohydrate bolus

Intervention Type OTHER

60 ml of water given every 5 minutes 14 times up until 70 minutes followed by 75 g sucrose after 75 minutes in a 250 ml solution

Interventions

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Regular carbohydrate feeding

60 ml of water with 5 g sucrose given every 5 minutes 14 times up until 70 minutes followed by 5 g sucrose after 75 minutes in a 250 ml solution

Intervention Type OTHER

Single carbohydrate bolus

60 ml of water given every 5 minutes 14 times up until 70 minutes followed by 75 g sucrose after 75 minutes in a 250 ml solution

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Self-identify as a trained runner
* Regularly participate in running activity (\>2 times a week)
* Participated in running based training for a minimum of 2 years
* Be willing to undertake exercise sessions until volitional exhaustion
* Be willing to have the necessary samples taken during the testing protocols
* Not a habitual smoker
* Have the capacity and willingness to provide informed consent (oral and written)
* Successful completion of the physical activity readiness questionnaire (PAR-Q)

Exclusion Criteria

* Female
* \<18 or \>50 years old
* Not regularly participating in running activity (\<3 times a week)
* Experience contraindications to the administration of the proposed anaesthetic (Lidocaine Hydrochloride)
* Habitual/previously habitual smoker

Minimum Eligible Age

18 Years

Maximum Eligible Age

50 Years

Eligible Sex

MALE

Accepts Healthy Volunteers

Yes