Effect of Hypoxic Conditioning on Cerebrovascular Health in the Elderly

Trial statusRecruiting
Trial phaseNot applicable
Trial typeInterventional
Biological sexAll
Age60-80
SponsorUniversity Hospital, Grenoble

About this trial

In line with the ever-growing aging of Western populations, the development of preventive strategies to slow down the effects of aging on cardiovascular health represents a major challenge in order to preserve functional capacities and a sufficient quality of life in the elderly. The alteration of vascular function (at the cerebral and systemic level) with aging is an important feature in the clinical picture including a decrease in physical and cognitive capacities. Although physical activity is recognized as an essential means of combating the effects of aging, optimizing its effects by defining the most effective strategies of practice remains a key objective. Offering alternative interventions to exercise training is also necessary for people who are unwilling or unable to engage in a physical activity program. In this context, hypoxic conditioning, alone or in conjunction with rehabilitative exercise training, is a new therapeutic modality with strong preclinical validity, in particular from a cardiovascular standpoint, and used in other pathologies to improve cardiovascular function and exercise performance and quality of life. Our aim is, therefore, to investigate the effect of hypoxic conditioning (alone or in conjunction with exercise training) on cerebrovascular health in the elderly.

Eligibility criteria

This trial accepts healthy volunteers

Qualifiers

60 to 80 years of age;

Being physically inactive (less than 150 min/week of moderate to intense physical activity);

No chronic cardiovascular, respiratory, metabolic or neuromuscular disease counterindicating an exercise training or hypoxic conditioning program;

Health coverage;

Disqualifiers

Body-mass index >30 kg/m2;

Smoking (> cigarettes/day);

Alcohol use (> 10g/day);

Mental disorder or history of mental disorder;

Trial design

Design model

Parallel

Treatments tested in this trial

  • Hypoxia and/or Exercise

    Procedure/Surgery

    Hypoxia at rest versus normoxia at rest; Hypoxia during exercise versus Normoxia during exercise.

Treatment groups

64 Participants
are divided into 4 treatment groups
Group A: Hypoxia - RestExperimental treatment 1 intervention
Group B: Normoxia - RestPlacebo comparator 1 intervention
Group C: Hypoxia - ExerciseExperimental treatment 1 intervention
Group D: Normoxia - ExerciseActive comparator 1 intervention

Trial outcomes

Primary outcomes

1

Middle cerebral artery flow velocity

Changes in middle cerebral artery flow velocity in response to hypercapnia (5% CO2)

Time frame
Before intervention; right after intervention; 2 months after intervention

Secondary outcomes

1

Peak oxygen uptake

Peak oxygen uptake during a cardiopulmonary exercise test

Time frame
Before intervention; right after intervention; 2 months after intervention
2

Flow-mediated dilation

Flow-mediated dilation in response to ischemia-reperfusion of the brachial artery

Time frame
Before intervention; right after intervention; 2 months after intervention
3

Blood pressure

24h (systolic, diastolic and mean) blood pressure assessment

Time frame
Before intervention; right after intervention; 2 months after intervention
4

Sleep

Sleep features assessed by polygraphy

Time frame
Before intervention; right after intervention; 2 months after intervention

Other outcomes

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