Professor John O'Hara
Professor Leeds Beckett
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Biography
John completed his first degree in Sport and Exercise Science, followed by a Masters in Sport and Exercise Science at Leeds Beckett University. He then went on to complete his PhD with Professor Roderick King at Leeds Beckett University. His PhD studies focussed on pre-exercise carbohydrate ingestion: rebound hypoglycaemia, fuel utilisation and endurance capacity in male cyclists.
John has worked at Leeds Beckett University as an academic member of staff since 2000, becoming a Professor in Sport and Exercise Physiology in 2015. John is a local research ethics co-ordinator and is a co-opted member to the University research ethics committee. John acts as a research mentor to academic colleagues. Further he delivers on physiology and nutrition modules at under-graduate and post-graduate level, as well as supervising PhD students within the Carnegie School of Sport. He is a Senior Fellow of the Higher Education Academy.
John is an accredited sport scientist with the British Association of Sport and Exercise Sciences (BASES), as well as being a Chartered Scientist with the Science Council. He also acts as the Director of the physiology research laboratories within the Carnegie School of Sport. John is an experienced applied sport scientist having worked with amateur and professional athletes across a range of sporting disciplines for many years.
Industry Expertise
Areas of Expertise
Education
Leeds Beckett University
PhD
Leeds Beckett University
MS
Sport and Exercise Science
Affiliations
- British Association of Sport and Exercise Sciences (BASES)
- Science Council
Links
Languages
- English
Event Appearances
Is there a place for static stretching in warm-up routines of soccer players?
World Congress on Science and Football 2015 Copenghagen, Denmark
Comparison of movement demands in Rugby League referees between the European Super League and Australasian National Rugby League.
The British Association of Sport and Exercise Sciences (BASES) Conference 2014 Burton upon Trent, UK
The effect of distance covered, number of high intensity efforts and heart rate on the decision-making accuracy of professional Rugby League referees
The British Association of Sport and Exercise Sciences (BASES) Conference 2014 Burton upon Trent, UK
Articles
Glucose and Fructose Hydrogel Enhances Running Performance, Exogenous Carbohydrate Oxidation and Gastrointestinal Tolerance
Medicine and Science in Sports and Exercise2021
Purpose
Beneficial effects of carbohydrate (CHO) ingestion on exogenous CHO oxidation and endurance performance require a well-functioning gastrointestinal (GI) tract. However, GI complaints are common during endurance running. This study investigated the effect of a CHO solution-containing sodium alginate and pectin (hydrogel) on endurance running performance, exogenous and endogenous CHO oxidation, and GI symptoms.
Marching to the Beet: The effect of dietary nitrate supplementation on high altitude exercise performance and adaptation during a military trekking expedition
Nitric Oxide: Biology and Chemistry2021
Purpose
The aim was to investigate the effect of dietary nitrate supplementation (in the form of beetroot juice, BRJ) for 20 days on salivary nitrite (a potential precursor of bioactive nitric oxide), exercise performance and high altitude (HA) acclimatisation in field conditions (hypobaric hypoxia).
Echocardiographic changes following active heat acclimation
Journal of Thermal Biology2020
Heat adaption through acclimatisation or acclimation improves cardiovascular stability by maintaining cardiac output due to compensatory increases in stroke volume. The main aim of this study was to assess whether 2D transthoracic echocardiography (TTE) could be used to confirm differences in resting echocardiographic parameters, before and after active heat acclimation (HA).
The Effects of Apnea Training, Using Voluntary Breath Holds, on High Altitude Acclimation: Breathe-High Altitude Study
High Altitude Medicine and Biology2020
Introduction: There is evidence that intermittent hypoxic exposure (IHE) may improve high altitude (HA) performance. In this study, the effects of short-term IHE through voluntary apnea training on HA-related symptoms, including acute mountain sickness (AMS), were examined for the first time.
A comparison of substrate oxidation during prolonged exercise in men at terrestrial altitude and normobaric normoxia following the coingestion of 13C glucose and 13C fructose
Physiological Reports2017
This study compared the effects of coingesting glucose and fructose on exogenous and endogenous substrate oxidation during prolonged exercise at altitude and sea level, in men. Seven male British military personnel completed two bouts of cycling at the same relative workload (55% Wmax) for 120 min on acute exposure to altitude (3375 m) and at sea level (~113 m). In each trial, participants ingested 1.2 g·min−1 of glucose (enriched with 13C glucose) and 0.6 g·min−1 of fructose (enriched with 13C fructose) directly before and every 15 min during exercise.
