Tadej Debevec

Tadej Debevec

@debevectadej.bsky.social

Environmental physiologist • Professor of Sport Science • IFMGA mountain guide • Proud dad • Husband • Not necessarily in that order • RPs ≠ endor.

227 Followers 225 Following 35 Posts Joined Nov 2024
10 months ago
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🚨CALL FOR PAPERS CLOSING SOON🚨
The #CallforPapers for our "New perspectives on the physiological basis of muscle loss" #SpecialIssue will be closing in ONE WEEK! Click the link below to find out more about the special issue, and submit your research!
💪buff.ly/Dl0LqKl

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10 months ago

Looking forward to participating in this ambitious and important conference put on by The Physiological Society- focussed on concrete actions.

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11 months ago

Frontiers | Impact of exercise training in a hypobaric/normobaric hypoxic environment on body composition and glycolipid metabolism in individuals with overweight or obesity: a systematic review and meta-analysis

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11 months ago

Not too much, not too little: crucial balance of muscle feedback on ventilation regulation - Gomes - The Journal of Physiology - Wiley Online Library

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11 months ago
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Directional sensitivity analysis of the cerebral pressure-flow relationship during normothermia and moderate hyperthermia | Journal of Applied Physiology | American Physiological Society Dynamic cerebral autoregulation (dCA) reacts differently when mean arterial pressure (MAP) increases versus decreases (i.e. directional sensitivity). While heat stress alters dCA, its influence on directional sensitivity remains unclear. This analysis investigated the impact of moderate hyperthermia on the directional sensitivity in the cerebral pressure‐flow relationship. Ten healthy participants (7 males; age: 37 ± 12 yrs.; body mass: 75 ± 9 kg) underwent 6 min of oscillatory lower body negative pressure (OLBNP) to induce large MAP fluctuations, at 0.03 and 0.10 Hz under normothermic and moderately hyperthermic conditions (+1.0°C increase in core temperature) induced via a water‐perfused suit. We calculated changes in middle cerebral artery mean blood velocity (MCAv) per alterations to MAP to compute absolute and relative ratios adjusted for time intervals during each OLBNP‐induced MAP increases (ΔMCAvT/ΔMAPTINC; %MCAvT/%MAPTINC) and decreases (ΔMCAvT/ΔMAPTDEC; %MCAvT/%MAPTDEC). Thereafter, we compared average absolute and relative ratios. There was no main effect of MAP direction on ΔMCAvT/ΔMAPT or %MCAvT/%MAPT during either 0.03 Hz (P=0.291, P=0.281) or 0.10 Hz (P=0.295, P=0.178) OLBNP. Regardless of MAP direction, ΔMCAvT/ΔMAPTINC (0.65 ± 0.17 vs 0.84 ± 0.22 cm. s−1/mmHg), ΔMCAvT/ΔMAPTDEC (0.70 ± 0.15 vs 0.85 ± 0.18 cm. s−1/mmHg) (thermal state: P=0.009), %MCAvT/%MAPTINC (0.92 ± 0.22 vs 1.33 ± 0.60), and %MCAvT/%MAPTDEC (1.01 ± 0.27 vs 1.30 ± 0.51) (thermal state: P=0.001) were lower in hyperthermia at 0.03 Hz OLBNP. Regardless of thermal states, these findings suggest an absence of dCA directional sensitivity. Reduced directional sensitivity metrics during hyperthermia may indicate more efficient dCA at very low frequency.

Directional sensitivity analysis of the cerebral pressure-flow relationship during normothermia and moderate hyperthermia

journals.physiology.org/doi/abs/10.1...

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11 months ago
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Sex differences in the physiological and perceptual responses to face masks during exercise | Journal of Applied Physiology | American Physiological Society Despite consistent evidence that face masks (FMs) increase dyspnea during exercise, few studies have examined the sex differences in the physiological and perceptual responses to FMs. In a randomized,...

Sex differences in the physiological and perceptual responses to face masks during exercise

journals.physiology.org/doi/full/10....

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11 months ago
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Diaphragm blood flow: new avenues for human translation | Journal of Applied Physiology | American Physiological Society The rhythmic contraction of the diaphragm facilitates continuous pulmonary ventilation essential for life. Adequate blood flow to the diaphragm is critical to continuously support contractile function...

Diaphragm blood flow: new avenues for human translation

journals.physiology.org/doi/full/10....

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11 months ago
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Effect of condensed heat acclimation on thermophysiological adaptations, hypoxic cross-tolerance, exercise performance, and deacclimation | Journal of Applied Physiology | American Physiological Socie... Short duration heat acclimation (HA) (≤5 daily heat exposures) elicits incomplete adaptation compared with longer interventions, possibly due to the lower accumulated thermal “dose.” It is unknown if ...

Effect of condensed heat acclimation on thermophysiological adaptations, hypoxic cross-tolerance, exercise performance, and deacclimation

journals.physiology.org/doi/full/10....

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11 months ago
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Fabulous two days spent at INSEP 🇫🇷 during Using Environmental Stressors to Achieve Peak Performance: From Evidence to Avenues to Explore conference.
Impressive facilities, excellent science and great friends and atmosphere. What more could one wish for.

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11 months ago

Impact of exercise training in a hypobaric/normobaric hypoxic environment on body composition and glycolipid metabolism in individuals with overweight or obesity: a systematic review and meta-analysis - PMC

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1 year ago
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Physiological Resilience: What Is It and How Might It Be Trained? Physiological resilience has recently been recognized as an additional factor that influences endurance exercise performance. It has thus been incorporated into a modified, contemporary version of “t...

Physiological Resilience: What Is It and How Might It Be Trained?

onlinelibrary.wiley.com/doi/full/10....

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1 year ago

Eight weeks of eccentric training at long-muscle length increases fascicle length independently of adaptations in passive mechanical properties | Journal of Applied Physiology | American Physiological Society

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1 year ago
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Muscle oxygenation and local blood volume difference between respiratory and skeletal muscles during preparatory and maximal dry static apnea in breath-hold divers During either a static or dynamic apnea, oxygen is delivered to vital organs, i.e., the brain and heart, and there is a compensatory reduction of oxyg…

Latest and greatest with @jjduke www.sciencedirect.com/science/arti...

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1 year ago
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Neuromuscular Fatigue Induced by Cycling at a Fixed Level of Perceived Effort: Effects of Different Purported Hypoxic Methods We compared neuromuscular fatigue induced by cycling at a fixed perceived effort in normoxic condition (NOR) and three purported hypoxia modalities: systemic hypoxia (SyH, FiO2 = 0.13), blood flow re...

Neuromuscular Fatigue Induced by Cycling at a Fixed Level of Perceived Effort: Effects of Different Purported Hypoxic Methods

onlinelibrary.wiley.com/doi/10.1111/...

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1 year ago
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Physiological rhythms and metabolic regulation: Shining light on skeletal muscle Metabolic regulation is essential for maintaining homeostasis in response to fluctuating dietary nutrient availability. In this review, we explore how metabolic health can be affected by the temporal...

Physiological rhythms and metabolic regulation: Shining light on skeletal muscle

physoc.onlinelibrary.wiley.com/doi/10.1113/...

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1 year ago
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Nocturnal pulse oxygen saturation dynamics at simulated high altitude: Predictive value for acute mountain sickness in healthy men born pre‐term The physiological sequelae of pre-term birth might influence the responses of this population to hypoxia. Moreover, identifying variables associated with development of acute mountain sickness (AMS) ...

New in Experimental Physiology by @bennarang.bsky.social and colleagues

Nocturnal pulse oxygen saturation dynamics at simulated high altitude: Predictive value for acute mountain sickness in healthy men born pre-term

physoc.onlinelibrary.wiley.com/doi/full/10....

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1 year ago
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Training Elite Athletes: 50 Years of Thinking About Practice and Research for Endurance Sports This essay summarizes and integrates my experiences and observations—starting in the middle 1970s—as an athlete, scientist interested in human performance, biomedical researcher, and “expert,” who so...

Training Elite Athletes: 50 Years of Thinking About Practice and Research for Endurance Sports

onlinelibrary.wiley.com/doi/full/10....

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1 year ago

🫀 22nd Integrative Human Cardiovascular Control Course

🗓️ May 19–23, 2025 Copenhagen, Denmark

💡
• Learn from leading international experts in cardiovascular research
• Hands-on demonstrations, including animal models and ultrasound techniques

✨ Learn from researchers from across the globe

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1 year ago

Causal relationship between strenuous exercise and muscle injury: a Mendelian randomization study with dual samples | European Journal of Applied Physiology

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1 year ago

Using environmental and exercise physiology to address gender inequalities in climate change and occupational health research - Lucas - Experimental Physiology - Wiley Online Library

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1 year ago

Exercise intolerance in pulmonary hypertension: robbing Peter to pay Paul - O'Halloran - The Journal of Physiology - Wiley Online Library

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1 year ago
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If you are a trained competitive cyclist over 5+ years, age 19-40 yrs, around Vancouver BC, and are interested in learning how you are affected by changes in cycling position, please consider volunteering to participate in our UBC Kin study! DM me or:
ubc.ca1.qualtrics.com/jfe/form/SV_...

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1 year ago
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Research directions in thermoregulation during exercise in extreme environments

New in Journal of Thermal Biology

Research directions in thermoregulation during exercise in extreme environments

www.sciencedirect.com/science/arti...

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1 year ago
3D models of cyclists in three aerodynamic positions: upright, time-trial, and 'superman' positions. 

Blocken et al 2018. Aerodynamic analysis of different cyclist hill descent positions. DOI 10.1016/j.jweia.2018.08.010

How does cycling body position (upright vs aero racing) affect performance and physiology, particularly muscle oxygenation mNIRS?

Here's what I'm learning, how I propose to investigate the question further, and how you can help!🧵👇 /20
(paper links in alt text!)
#SportScience #cycling

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1 year ago
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Great to see some of our field work published: an observational study of continuous glucose monitoring with professional cyclists during a training camp. Glucose levels fluctuate
during periods of intense training, but are not solely
dependent on the amount of energy expended
doi.org/10.1123/ijsn...

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1 year ago
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Practice and Science: Why Both Matter "It's better to be consistently wrong than right once in a while" - Chuckie V

A great one from my good friend, Iñaki...

Science isn't citing the latest paper that you heard on some podcast.

Science is measuring *your* inputs, *your* outputs and figuring out the relationships between the two.

Science lives in the real world, not the lab.🧪

open.substack.com/pub/inakidel...

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1 year ago

sigmanutrition.com/podcast-welc...

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1 year ago
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UAE Team Emirates confirm squad have stopped using carbon monoxide rebreathing 'It was an exercise that we conducted over 18 months... We finished that process now' says Jeroen Swart

Wise and balanced words from Jeroen Swart
even though I see no valid scientific nor ethical reason(s) to stop using this DIAGNOSTIC method in elite (endurance) sport.... CO inhalations for "performance boost" is, however, an entirely different matter...

www.cyclingnews.com/news/uae-tea...

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1 year ago
Canadian Science Publishing

High-intensity interval training with blood-flow restriction enhances sprint and maximal aerobic power in male endurance athletes

cdnsciencepub.com/doi/10.1139/...

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1 year ago
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The effect of repeated hot water immersion on vascular function, blood pressure and central haemodynamics in individuals with type 2 diabetes mellitus Type 2 diabetes mellitus (T2DM) is characterised by endothelial dysfunction, leading to increased risk of cardiovascular disease. Emerging evidence su…

www.sciencedirect.com/science/arti...

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