<b>Hintergrund:</b> Alpiner Skilauf und Snowboarden zählen zu den beliebtesten Wintersportarten. Allerdings sind diese auch mit einem bestimmten Verletzungsrisiko verbunden, das jedoch in letzten Jahrzehnten kontinuierlich niedriger wurde. In der Wintersaison 2002/03 wurde die letzte große Unfallerhebung auf österreichischen Skipisten durchgeführt. Veränderungen Neuentwicklungen Ski- Snowboardausrüstung, verstärkte Beschneiung intensive Pistenpräparation könnten durchaus Verletzungsgeschehen...

Isokinetic strength testing is an important tool in the evaluation of physical capacities athletes as well for decision making regarding return to sports after anterior cruciate ligament (ACL) reconstruction both and lay population. However, isokinetic time consuming requires special equipment.A single-jump test, regardless leg dominance, may provide information knee extension through use correlation analysis jump height peak torque muscle strength.Cross-sectional study; Level evidence, 3.A...

Irisin is a myokine involved in adipocyte transformation. Its main beneficial effects arise from increased energy expenditure. production particularly stimulated by physical exercise. The present study investigates the changes of plasma irisin type 2 diabetic patients performing different training modalities. Fourteen underwent 4 week supervised high-intensity interval (HIT; n=8) or continuous moderate-intensity (CMT; n=6), with equivalent total amounts work required. Plasma samples were...

Introduction Hyperoxia, e.g. administration of 100 % oxygen, is a wide spread tool to improve blood oxygenation (e.g. in emergency medicine) but also applied elite sports training intensity or competition performance. The positive effects continuous hyperoxia during aerobic high-intensity exercise has been shown repeatedly, however, the potential intermittent doses are unclear. Out study aimed test repeated bouts hyperoxia, each lasting fifteen seconds, on maximal 5-minute cycling...

Supplemental oxygen (hyperoxia) improves physical performance during hypoxic exercise. Based on the analysis of metabolome and iron homeostasis from human athlete blood samples, we show that hyperoxia recovery periods interferes with metabolic alterations following This may impair beneficial adaptations to exercise and/or hypoxia highlights risks supplementation in hypoxia.

Recently, chronic intermittent inhalation of low-dose carbon monoxide (CO) has been postulated as a practice to increase total hemoglobin mass with potential beneficial effects on endurance performance. In this perspective article, we discuss the performance enhancing capabilities well safety concerns, which include individual variability in CO response, and acute health effects. It is also important note that according World-Anti-Doping-Agency (WADA), could fall under “ M1. Manipulation...

The present study evaluated the effects of a preacclimatization program comprising seven passive 1-h exposures to 4500-m normobaric hypoxia on prevalence and severity acute mountain sickness (AMS) during subsequent exposure real high altitude in persons susceptible AMS.The project was designed as randomized controlled trial including 32 healthy female male participants with known susceptibility AMS symptoms. After baseline measurements, were randomly assigned or control group receive (seven...

Oxygen utilization and hypoxia: The use of oxygen for oxidative phosphorylation in mitochondria allows the production > 15× more adenosine triphosphate per molecule glucose (which can be substantially useful oxidation fatty acids) as compared with oxygen-independent glycolysis. is also required hundreds other biochemical reactions, has been recently noted a comment on importance homeostasis human health.1 Aside from this great efficiency multifunctionality, metabolism confers substantial...

Faulhaber, M, Schneider, S, Rausch, LK, Dünnwald, T, Menz, V, Gatterer, H, Kennedy, MD, and Schobersberger, W. Repeated short-term bouts of hyperoxia improve aerobic performance in acute hypoxia. J Strength Cond Res 37(10): 2016-2022, 2023-This study aimed to test the effects repeated on maximal 5-minute cycling under hypoxic conditions (3,200 m). Seventeen healthy recreationally trained individuals (7 women 10 men) participated this randomized placebo-controlled cross-over trial. The...

The aim of this study was to determine alterations the metabolome in blood plasma response concentric-eccentric leg exercise performed at a simulated altitude 3,500 m. To do so, we recruited 11 well-trained subjects and an untargeted metabolomics analysis samples obtained before, 20 min after as well on day 8 five sets maximal, exercises that lasted 90 s each. We identified annotated 115 metabolites through liquid chromatography-mass spectrometry used them further calculate sum/ratio...

It is well known that acute hypoxia has negative effects on balance performance. An attempt to compensate for the influence of competition performance was made by application hyperoxic gases (inspiratory fraction oxygen > 0.2095) prior exercise.To investigate whether preconditioning (pure-oxygen supplementation exercise) improves ability and postural stability during normobaric (3500 m) in highly skilled skiers.In this single-blind randomized, crossover study, 19 subjects performed a 60-s...

The altering effects of hypoxia on aerobic/anaerobic performance are well documented and form the basis this study. Application hyperoxic gases (inspiratory fraction oxygen [FiO2] > 0.2095) prior to competition or training (hyperoxic preconditioning) can compensate for negative influence acute hypoxia.To investigate whether supplementation immediately exercise (FiO2 = 1.0) improves all-out in normobaric (3500 m) highly skilled skiers.In single-blind, randomized, crossover study, 17 subjects...

Intermittent hypoxic exposure (IHE) has been shown to induce aspects of altitude acclimatization which affect ventilatory, cardiovascular and metabolic responses during exercise in normoxia hypoxia. However, knowledge on altitude-dependent effects possible interactions remains scarce. Therefore, we determined the IHE cardiorespiratory at different simulated altitudes same healthy subjects. Eight male volunteers participated study were tested before 1 2 days after (7 × hour 4500 m). The...

To study the effects of a supervised exercise program on serum gamma-glutamyl transferase (GGT), glycemic control and cardiovascular risk factors in pre-diabetic patients with isolated impaired fasting glucose (IFG) those IFG plus tolerance (IGT). Out 60 (30 30 + IGT) 24 were randomly assigned to (1 h twice week) 36 only obtained counselling diabetes its prevention. Patients have been followed over 12-month period. The main findings that IGT had increased GGT levels at baseline (49.2±27.4...

Background: Total knee arthroplasty (TKA) is socially relevant due to its high prevalence, incidence and the affected population. A subpopulation of TKA patients exists that strives be active also return sports after total joint replacement. In this context, a further group interested in high-impact physical activities want proceed with such even surgery. Focusing on winter sports, there still lack evidence whether ski mountaineering feasible for subgroup patients. Therefore, feasibility...

Tissue hypoxia contributes to the pathogenesis of several acute and chronic diseases. Hyperbaric oxygen therapy (HBO) whole-body warming using low-temperature infrared technology (LIT) are techniques that might improve hypoxemia. Combining HBO LIT as hyperbaric combined with radiation (HBOIR) be an approach results in positive synergistic effects on oxygenation. increases blood flow could reduce HBO-induced vasoconstriction, hyperoxia compensate for increased metabolic requirements mediated...

Sport is known to have many positive effects on mental and physical health. High-intensity exercise considered decrease muscle strength induce fatigue, which associated with a higher risk of injury. In recreational alpine skiers, eccentric peak hamstring torque, as an indication occurs even after 1 day skiing. The popularity ski mountaineering increasing enormously, but no studies are available its strength. Therefore, the present study examined consequences fatigue concentric/eccentric...

Abstract Dünnwald, T, Morawetz, D, Faulhaber, M, Gatterer, H, Birklbauer, C, Koller, A, Weiss, G, and Schobersberger, W. Supplemental O 2 during recovery does not improve repeated maximal concentric-eccentric strength-endurance performance in hypoxia. J Strength Cond Res 36(11): 3065–3073, 2022—An alpine ski racing training session typically includes bouts of exercise at high altitude. We evaluated whether hyperoxic between 5 sets high-intensity exercises, which resembled activity were...