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Completed

NCT Number: NCT00731510

MEDEX Hidden Valley 2008

During a multi-week expedition to the Himalaya, we aim to investigate i) whether dietary supplementation with carbohydrate drinks and gels can improve physical performance; and ii) the underlying mechanisms for any observed changes in performance.

We hypothesise that i) carbohydrate supplementation will improve physical performance; and ii) the underlying mechanism of this improvement in performance will include maintenance of body glycogen (sugar) stores, prevention of dehydration and decrease in the incidence of acute mountain sickness.

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Key information

Conditions

Hypoxia Altitude Sickness Pathological Conditions, Signs and Symptoms Respiration Disorders Respiratory Tract Diseases Signs and Symptoms Signs and Symptoms, Respiratory

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Medical Expeditions Ltd

Pinfold, Hyssington, Montgomery, Powys, SY15 6AY, United Kingdom

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • a healthy enthusiasm for the outdoors and/or a passion for research in remote and difficult circumstances

Exclusion criteria

  • Persons with Phenylketonuria

Treatment and study plan

Carbohydrate energy drink

Dietary Supplement

Complex carbohydrates including maltodextrin (97%) dissolved in water to make a a 10% solution, or dissolved in 25mL gels. Ad libitum. Twenty two days.

Other names: PSP22 Energy, Science in Sport, Blackburn, UK

Aspartame

Dietary Supplement

Aspartame dissolved in water, ad libitum, 22 days.

Other names: Science in Sport, Blackburn, UK

Primary outcomes

  1. Performance (time to complete a physical performance task)

    Time frame: Mid study

Secondary outcomes

  1. Body composition

    Time frame: Pre, mid and post study

  2. Hydration status

    Time frame: Pre, mid and post study

  3. Body glucose stores

    Time frame: Pre, mid and post study

  4. Oxygen delivery

    Time frame: Pre, mid and post study

  5. Acute mountain sickness

    Time frame: Every day

  6. Spontaneous physical activity level

    Time frame: Pre, mid and post study

  7. Rating of perceived exertion during a stepping task

    Time frame: Pre, mid and post study

Sponsors and collaborators

Lead sponsor

Medical Expeditions Ltd

Other

Collaborators

  • Bangor University
  • Plans Branch of Headquarters Army Recruiting and Training Division
  • Science in Sport

Registry information

Important dates

Study start
2008
Primary completion
2008
Study completion
2008
First posted
Aug 11, 2008
Registry last updated
Mar 31, 2017

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

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This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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