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...

The aim of this study was to investigate changes in the power profile U23 professional cyclists during a competitive season based on maximal mean output (MMP) and derived critical (CP) work capacity above CP (W') obtained training racing.A total 13 highly trained (age = 21.1 [1.2] y, maximum oxygen consumption 73.8 [1.9] mL·kg-1·min-1) participated study. cycling split into pre-season in-season. In-season divided early-, mid-, late-season periods. During pre-season, test completed derive...

The diagnosis and quantification of severity acute mountain sickness (AMS) continue to be problematic. What symptoms should included in a score how weigh any given symptom the total remain matter debate. Seventy seven healthy male (n=43) female (n=34) volunteers, aged between 18 42 years, were exposed normobaric hypoxia (Fio2=12.6%≙4500 m) for 12 hours. Symptoms AMS according Lake Louise Scoring system (LLS) recorded before after 30 min, 3, 6, 9, hours hypoxia. scores continued increase...

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...

Abstract High intensity interval training (HIIT) is widely used to improve VO2max. The purpose of this study was examine if lower extremity HIIT resulted in improved maximal oxygen uptake (VO2max) and peak power output (PPO) the upper extremities. Twenty healthy trained participants (11 female 9 male, VO2max 3160±1175 ml/min) underwent a 6-week program extremities on cycle ergometer. Before after period ergometry (CE) hand crank (HCE) were conducted determine PPO. Additionally, hematological...

This study aims to evaluate the agreement in maximum oxygen consumption (V˙O2max) between a running protocol and ski mountaineering (SKIMO) protocol. Eighteen (eleven males, seven females) mountaineers (age: 25 ± 3 years) participated study. V˙O2max, heart rate (HRmax), blood lactate concentration (BLAmax) were determined an incremental uphill test SKIMO-equipment-specific test. V˙O2max did not differ SKIMO protocols (p = 0.927; mean difference –0.07 3.3 mL/min/kg), nor HRmax 0.587, –0.7 5.1...

Hand-grip strength was evaluated in 757 recreational downhill skiers and compared to 1021 community-dwellers. Findings are reported for age sex categories consistent with community-dwelling norms. Effect size (Cohen's d) calculated estimate the clinical relevance of differences between populations. Most male half female demonstrated higher grip dominant hand (moderate large effect size) reference population. declined at a similar rate as Relative (per kg body mass) significantly positively...

Abstract Gatterer, H, Menz, V, Untersteiner, C, Klarod, K, and Burtscher, M. Physiological factors associated with declining repeated sprint performance in hypoxia. J Strength Cond Res 33(1): 211–216, 2019—Performance loss hypoxia might not only be caused by reduced oxygen availability, but also influenced other factors, as for example, oxidative stress, perceived exertion, or breathing patterns. This study aimed to investigate the influence of these on running during hypoxic normoxic...

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 present project compared acute hypoxia-induced changes in lactate thresholds (methods according to Mader, Dickhuth and Cheng) with high-intensity endurance performance. Six healthy well-trained volunteers conducted graded cycle ergometer tests normoxia normobaric hypoxia (simulated altitude 3000 m) determine power output at three (PMader, PDickhuth, PCheng). Subsequently, participants performed two maximal 30-min cycling time trials (test 1 for habituation) one mean (Pmean). PMader,...

In severe hypoxia, single-leg peak oxygen uptake (VO2peak) is reduced mainly due to the inability increase cardiac output (CO). Whether moderate altitude allows CO during cycling, thereby restoring VO2peak, has not been extensively investigated. Five healthy subjects performed an incremental, maximal, two-legged cycle ergometer test, and on separate days a maximal incremental one-leg cycling test in normoxia hypoxia (fraction of inspired (FiO2) = 15%). Oxygen uptake, heart rate, blood...

The purpose of the study was (1) to investigate effects regular long-term circuit training (once per week) on cardiorespiratory fitness (CRF) in sedentary adults and (2) compare progress with continued exercise participation by regularly active age-matched individuals. Ten sedentary, middle-aged (51 ± 6 years) individuals (sedentary group, SG) both sexes performed 32 weeks (1 session/week) supervised 10 self-managed training. Effects were compared an group 8 years; n = 10) (active AG). CRF...