Search Results - "O'Hara, John Paul"
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The Effect of High-Altitude Acclimatisation on Ultra-Short Heart Rate Variability
Published in Frontiers in cardiovascular medicine (28-03-2022)“…High-altitude (HA) exposure affects heart rate variability (HRV) and has been inconsistently linked to acute mountain sickness (AMS). The influence of…”
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Dietary nitrate supplementation enhances short but not longer duration running time-trial performance
Published in European journal of applied physiology (01-04-2017)“…Purpose This study evaluated the effects of dietary nitrate (NO 3 − ) supplementation on physiological functioning and exercise performance in trained…”
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The validity and reliability of a sample of 10 Wattbike cycle ergometers
Published in Journal of sports sciences (18-07-2017)“…The purpose of the study was to assess the validity and inter-bike reliability of 10 Wattbike cycle ergometers, and to assess the test-retest reliability of…”
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Anthropometric and Three-Compartment Body Composition Differences between Super League and Championship Rugby League Players: Considerations for the 2015 Season and Beyond
Published in PloS one (29-07-2015)“…Super League (SL) and Championship (RLC) rugby league players will compete against each other in 2015 and beyond. To identify possible discrepancies, this…”
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A Four-Way Comparison of Cardiac Function with Normobaric Normoxia, Normobaric Hypoxia, Hypobaric Hypoxia and Genuine High Altitude
Published in PloS one (21-04-2016)“…There has been considerable debate as to whether different modalities of simulated hypoxia induce similar cardiac responses. This was a prospective…”
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Markers of physiological stress during exercise under conditions of normoxia, normobaric hypoxia, hypobaric hypoxia, and genuine high altitude
Published in European journal of applied physiology (01-05-2017)“…Purpose To investigate whether there is a differential response at rest and following exercise to conditions of genuine high altitude (GHA), normobaric hypoxia…”
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Hydration status of rugby league players during home match play throughout the 2008 Super League season
Published in Applied physiology, nutrition, and metabolism (01-12-2010)“…The hydration status of rugby league players during competitive home match play was assessed throughout the 2008 Super League season. Fourteen players from 2…”
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Reliability of Biomarkers of Physiological Stress at Rest and Post-exertional Heat Stress
Published in International journal of sports medicine (01-03-2023)“…The purpose of this study was to assess the reliability of blood biomarkers that can signify exercise-induced heat stress in hot conditions. Fourteen males…”
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“Beet-ing” the Mountain: A Review of the Physiological and Performance Effects of Dietary Nitrate Supplementation at Simulated and Terrestrial Altitude
Published in Sports medicine (Auckland) (01-11-2017)“…Exposure to altitude results in multiple physiological consequences. These include, but are not limited to, a reduced maximal oxygen consumption, drop in…”
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Dietary nitrate supplementation enhances high-intensity running performance in moderate normobaric hypoxia, independent of aerobic fitness
Published in Nitric oxide (30-09-2016)“…Nitrate-rich beetroot juice (BRJ) increases plasma nitrite concentrations, lowers the oxygen cost (V⋅O2) of steady-state exercise and improves exercise…”
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The Effects of Sex on Cardiopulmonary Responses to Acute Normobaric Hypoxia
Published in High altitude medicine & biology (01-06-2016)“…Boos, Christopher John, Adrian Mellor, John Paul O'Hara, Costas Tsakirides, and David Richard Woods. The effects of sex on cardiopulmonary responses to acute…”
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A comparison of two methods of heart rate variability assessment at high altitude
Published in Clinical physiology and functional imaging (01-11-2017)“…Summary Heart rate variability (HRV) is a useful index of autonomic function and has been linked to the development of high altitude (HA) related illness…”
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