Normobaric Hypoxic Training and Metabolic Syndrome

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01468220
Recruitment Status : Active, not recruiting
First Posted : November 9, 2011
Last Update Posted : August 21, 2017
Information provided by (Responsible Party):
Michael Boschmann, Charite University, Berlin, Germany

Brief Summary:
The patient numbers with metabolic syndrome and diabetes have doubled in the last decade. Data that physical exercise ameliorates the metabolic syndrome are convincing, although the mechanisms of the effect in man are not clear. Numerous endocrine or molecular mechanisms modified by physical exercise are known to be hypoxia-sensitive, i.e. by hypoxia-inducible factor-1 (HIF-1) regulation. Thus, relative hypoxia may link physical exercise and modification of endogenous metabolism. Medical communities seem ill equipped to address the primary issues involved. The investigators have experience with normobaric "hypoxia chambers" and will now test a (physical exercise) training program, using state-of-the-art assessments available nowhere else in Germany. The investigators will compare hypoxia chamber, to ambient training, to test the notion that specific exercise conditions could regulate specific molecular pathways involved in the pathogenesis of the metabolic syndrome. Indeed, hypoxia chamber training could be superior to conventional training in terms of reducing cardiovascular risk factors or improving fitness. The investigators will test overall metabolism-related effects with a metabolic chamber. The investigators will test local metabolism with microdialysis during exercise routines, and the investigators will perform fat and muscle biopsies to investigate tissue-related effects. The investigators include experience from a broad-ranging spectrum. The investigators findings might improve understanding mechanisms linking physical exercise and endogenous metabolism. Furthermore, they could influence decision-making regarding non-pharmacological interventions.

Condition or disease Intervention/treatment Phase
Metabolic Syndrome Other: Endurance training Not Applicable

Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 40 participants
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Single (Participant)
Primary Purpose: Basic Science
Official Title: Normobaric Hypoxic Training Compared to Ambient Training on the Course of the Metabolic Syndrome
Study Start Date : January 2012
Actual Primary Completion Date : July 2017
Estimated Study Completion Date : March 2018

Resource links provided by the National Library of Medicine

Arm Intervention/treatment
Placebo Comparator: normoxic training
6 weeks of endurance training under normoxia
Other: Endurance training
Endurance training three times per week over six weeks

Active Comparator: hypoxic training
6 weeks of endurance training under hypoxia
Other: Endurance training
Endurance training three times per week over six weeks

Primary Outcome Measures :
  1. Increase in mitochondria number in skeletal muscle with exercise in hypoxia compared to normoxia [ Time Frame: Participants will be followed for the duration of the training program, an expected average of 6 weeks ]

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:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Body mass index 27-40 kg/m2
  • Abdominal obesity (waist circumference >102 cm form men, >88 cm for women)
  • Two further diagnostic criteria of metabolic syndrome (ATP III Definition):
  • HDL cholesterin <40 mg/dl for men, <50 mg/dl for men
  • Triglyceride >150 mg/dl
  • Fasting glucose >110 mg/dl
  • Blood pressure >135/80 mm Hg
  • Less than 2 hours of physical activity per week
  • Sinus rhythm

Exclusion Criteria:

  • Other relevant metabolic or cardiovascular diseases

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 identifier (NCT number): NCT01468220

Charite University Medicine, ECRC
Berlin, Germany, 13125
Sponsors and Collaborators
Charite University, Berlin, Germany

Responsible Party: Michael Boschmann, MD, Research Associate, Charite University, Berlin, Germany Identifier: NCT01468220     History of Changes
Other Study ID Numbers: Hypoxitrain 1
Hypoximet 1 ( Other Grant/Funding Number: DFG_LU_435_12/1 )
First Posted: November 9, 2011    Key Record Dates
Last Update Posted: August 21, 2017
Last Verified: August 2017

Keywords provided by Michael Boschmann, Charite University, Berlin, Germany:
tissue metabolism
skeletal muscle
adipose tissue

Additional relevant MeSH terms:
Metabolic Syndrome X
Pathologic Processes
Insulin Resistance
Glucose Metabolism Disorders
Metabolic Diseases