A5029078631- High Altitude and Hypoxia
- Cardiovascular and exercise physiology
- Heart Rate Variability and Autonomic Control
- Neuroscience of respiration and sleep
- Chronic Obstructive Pulmonary Disease (COPD) Research
- Sports Performance and Training
- Exercise and Physiological Responses
- Cardiovascular Effects of Exercise
- Physical Education and Training Studies
- Cardiovascular Health and Disease Prevention
- Hemodynamic Monitoring and Therapy
- Injury Epidemiology and Prevention
- Adipose Tissue and Metabolism
University of Lausanne
2021-2024
Abstract Microvascular impairments are typical of several cardiovascular diseases. Near‐infrared spectroscopy (NIRS) combined with a vascular occlusion test provides non‐invasive insights into microvascular responses by monitoring skeletal muscle oxygenation changes during reactive hyperaemia. Despite increasing interest in the effects sex and ageing on responses, evidence remains inconsistent. Therefore, present study aimed to investigate age responsiveness. Twenty‐seven participants (seven...
Introduction: The determination of the optimal occlusion level is a key parameter in blood flow restriction (BFR). This study aimed to compare effects elastic (BStrong) vs. nylon (Hokanson) BFR cuffs on lower and upper limbs. Methods: Eleven healthy participants undertook several sessions with 2 different similar width their limbs at pressures [200, 250, 300, 350, 400 mmHg for BStrong 0, 40, 60% arterial pressure (AOP) Hokanson]. Doppler ultrasound recorded flows through brachial femoral...
The Wim Hof breathing method (WHBM) combines periods of hyperventilation (HV) followed by voluntary breath-holds (BH) at low lung volume. It has been increasingly adopted coaches and their athletes to improve performance, but there was no published research on its effects. We determined the feasibility implementing a single WHBM session before repeated sprinting performance evaluated any acute ergogenic Fifteen amateur runners performed prior Repeated Ability Sprint Test (RAST) in comparison...
Citherlet, Tom, Antoine Raberin, Giorgio Manferdelli, Nicolas Bourdillon, and Grégoire P Millet. Impact of the menstrual cycle (MC) on cardiovascular ventilatory responses during exercise in normoxia hypoxia.
Abstract As more women engage in high-altitude activities, understanding how ovarian hormone fluctuations affect their cardiorespiratory system is essential for optimizing acclimatization to these environments. This study investigates the effects of menstrual cycle (MC) phases on physiological responses at rest, during and after submaximal exercise, (barometric pressure 509 ± 6 mmHg; partial inspired oxygen 96 1 ambient temperature 21 2 °C relative humidity 27 4%) 16 eumenorrheic women. Gas...
ABSTRACT Introduction Mountain ultramarathon induces extreme physiological stress for the human body. For instance, a decrease in total hemoglobin mass (Hbmass) due to severe hemolysis is historically suspected. Nevertheless, hematological changes following 330-km mountain have date never been investigated. Methods Blood volumes were determined before (pre-) and after (post-) race completed by thirteen participants, through automated carbon monoxide (CO)-rebreathing method. Native normalized...
Introduction
 The acute mountain sickness (AMS) prevalence increases with altitude; i.e.,10-25% at 2,500 m and 50-85% ~5,000 (Bärtsch & Swenson, 2013). Women are more likely affected by AMS than men (Richalet et al., 2012). can affect exercise performance. However, the effects of menstrual cycle (MC) on physiological responses to tolerance high-altitude (HA) remain underexplored. It has been reported that ovarian hormones stimulate ventilation in normoxic conditions (Saaresranta...
Introduction
 The global rise in the elderly population is accompanied by an increased incidence of non-communicable diseases, including cancers, cardiovascular conditions, or sarcopenia. Therefore, it becomes crucial to find effective strategies delay onset slow down progression these diseases. Hypoxic (HYP), blood flow restriction (BFR), and eccentric (ECC) training are promising modalities mitigate effects aging. However, have never been compared. Thus, this study aimed evaluate...
Introduction
 The prevalence of acute mountain sickness (AMS) is increasing with altitude (i.e., 10-25% at 2,500 m and 50-85% ~ 5,000 m; Bärtsch & Swenson, 2013). While there no error-free test to predict its occurrence, several risk factors tests have been proposed. For example, the hypoxic ventilatory response (HVR) measures ratio between increase in ventilation (VE) decrease pulse saturation (SpO2) during exposure. Some studies reported an increased (Lhuissier et al., 2012),...