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Related Concept Videos

Hypoglycemia and Glucagon01:15

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Without prolonged fasting, healthy individuals maintain blood glucose levels above 3.5 mM due to a well-adapted neuroendocrine counterregulatory system that effectively prevents acute hypoglycemia, a potentially life-threatening condition. The primary clinical scenarios for hypoglycemia encompass diabetes treatment, inappropriate production of endogenous insulin or insulin-like substances by tumors, and the use of glucose-lowering agents in non-diabetic individuals. Notably, hypoglycemia in the...
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For most patients, experiencing several weeks of polyuria, polydipsia, fatigue, and significant weight loss may indicate the presence of diabetes. Furthermore, adults displaying the phenotypic appearance of type 2 diabetes (particularly those who are obese and not initially insulin-requiring), may have islet cell autoantibodies, suggesting autoimmune-mediated β cell destruction and a diagnosis of latent autoimmune diabetes of adults (LADA). The categorization of glucose homeostasis is...
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Type 2 diabetes, characterized by insulin resistance, arises when the insulin receptors on cells lose responsiveness to insulin, diminishing the cell's capacity to take up glucose, resulting in elevated blood glucose levels. To receive a diagnosis of Type 2 diabetes, a series of blood glucose tests are necessary to assess whether the blood glucose falls within normal parameters. If the result is out of the normal range, a patient may be diagnosed as prediabetic or diabetic, depending on the...
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Hypoxia01:23

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Hypoxia is a medical condition characterized by an inadequate oxygen supply to body tissues. It typically manifests as a bluish discoloration of the skin and mucosae, especially in fair-skinned individuals, when hemoglobin (Hb) saturation drops below 75%.
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Pathophysiology of Diabetes01:20

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Diabetes mellitus is a chronic metabolic disorder characterized by hyperglycemia. The four categories of diabetes are type 1 diabetes, type 2 diabetes, other specific types of diabetes, and gestational diabetes.
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Related Experiment Video

Updated: Mar 20, 2026

Characterization of Metabolic Status in Nonhuman Primates with the Intravenous Glucose Tolerance Test
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Characterization of Metabolic Status in Nonhuman Primates with the Intravenous Glucose Tolerance Test

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Acute Hypoxic Test in Patients with Prediabetes.

Valerii B Shatylo1, Tatiana V Serebrovska2, Anna V Gavalko1

  • 11 Department of Physiology and Pathology of Internal Organs, D.F. Chebotarev State Institute of Gerontology , Kiev, Ukraine .

High Altitude Medicine & Biology
|May 24, 2016
PubMed
Summary

Intermittent hypoxia training may improve prediabetes, but individual responses vary. The acute hypoxic test reveals impaired cardiovascular resilience in prediabetes patients, necessitating personalized training approaches.

Keywords:
acute hypoxia testglucoseinsulinoxygen blood saturationprediabetes

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A Model to Simulate Clinically Relevant Hypoxia in Humans
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A Model to Simulate Clinically Relevant Hypoxia in Humans
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A Model to Simulate Clinically Relevant Hypoxia in Humans

Published on: December 22, 2016

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Area of Science:

  • Exercise Physiology
  • Metabolic Health
  • Altitude Medicine

Background:

  • Prediabetes is characterized by impaired carbohydrate metabolism.
  • Intermittent hypoxia training (IHT) shows promise for metabolic improvement.
  • Individualized IHT protocols are crucial for effectiveness.

Purpose of the Study:

  • To investigate the relationship between carbohydrate metabolism markers and hypoxia tolerance.
  • To assess cardiovascular resilience during acute hypoxia in prediabetes.
  • To inform personalized IHT prescription for prediabetes management.

Main Methods:

  • An acute hypoxic test (AHT) involving breathing 12% O2 for 20 minutes was conducted.
  • Participants included healthy volunteers and patients with prediabetes.
  • Carbohydrate metabolism indices (fasting plasma glucose, OGTT) and oxygen saturation (SaO2) were measured.

Main Results:

  • A significant negative correlation was observed between SaO2 levels during AHT and fasting plasma glucose (r = -0.83) and 2-hour post-OGTT glucose (r = -0.75).
  • Prediabetes patients exhibited longer recovery times and reduced cardiovascular resilience compared to controls.
  • Correlations were also found between SaO2 and insulin levels.

Conclusions:

  • Hypoxia tolerance is linked to carbohydrate metabolism in prediabetes.
  • Cardiovascular resilience is diminished in individuals with prediabetes.
  • These findings underscore the need for tailored IHT regimens based on individual hypoxic responses.