Official Title

MEDEX Hidden Valley 2008
  • Phase

  • Study Type

  • Status

    Completed No Results Posted
  • Intervention/Treatment

    aspartame ...
  • Study Participants

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.
Study Started
Jun 30
Primary Completion
Oct 31
Study Completion
Dec 31
Last Update
Mar 31

Dietary Supplement Carbohydrate energy drink

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

Dietary Supplement Aspartame

Aspartame dissolved in water, ad libitum, 22 days.

  • Other names: Science in Sport, Blackburn, UK

1 Experimental

Carbohydrate supplements (drinks and gels)

2 Placebo Comparator

Primarily Aspartame plus natural flavourings. Powder dissolved in water to provide non-distinguishable placebo drink.


Inclusion Criteria:

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

Exclusion Criteria:

Persons with Phenylketonuria
No Results Posted