Items where Author is "O'Hara, J"
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Rowe, J and King, R and King, A and Wilson, O and Morrison, D and Preston, T and O'Hara, J (2021) Glucose and Fructose Hydrogel Enhances Running Performance, Exogenous Carbohydrate Oxidation and Gastrointestinal Tolerance. Medicine and Science in Sports and Exercise. ISSN 0195-9131 (In Press)
Marshall, AR and Rimmer, JE and Shah, N and Bye, K and Kipps, C and Woods, DR and O'Hara, J and Boos, CJ and Barlow, M (2021) Marching to the Beet: The effect of dietary nitrate supplementation on high altitude exercise performance and adaptation during a military trekking expedition. Nitric Oxide, 113-11. pp. 70-77. ISSN 1089-8603 DOI: https://doi.org/10.1016/j.niox.2021.05.002
Parsons, IT and Stacey, MJ and Faconti, L and Hill, N and O'Hara, J and Walter, E and Farukh, B and McNally, R and Sharp, H and Patten, A and Grimaldi, R and Gall, N and Chowienczyk, P and Woods, DR (2021) Histamine, mast cell tryptase and post-exercise hypotension in healthy and collapsed marathon runners. European Journal of Applied Physiology. ISSN 1439-6319 DOI: https://doi.org/10.1007/s00421-021-04645-0
Parsons, I and Snape, D and O'Hara, J and Holdsworth, D and Stacey, M and Gall, N and Chowienczyk, P and Wainwright, B and Woods, D (2020) Echocardiographic changes following active heat acclimation. Journal of Thermal Biology, 93. p. 102705. ISSN 0306-4565 DOI: https://doi.org/10.1016/j.jtherbio.2020.102705
Margolis, L and O'Hara, J and Griffiths, A and Wolfe, R and Young, A and Pasiakos, S (2020) Isotope tracer assessment of exogenous glucose oxidation during aerobic exercise in hypoxia. Physiological Reports. ISSN 2051-817X DOI: https://doi.org/10.14814/phy2.14594
Elia, A and Barlow, M and Wilson, OJ and O'Hara, J (2020) Splenic responses to a series of repeated maximal static and dynamic apnoeas with whole body immersion in water. Experimental Physiology. ISSN 0958-0670 DOI: https://doi.org/10.1113/EP088404
Griffiths, A and Deighton, K and Shannon, O and Boos, C and Rowe, J and Matu, J and King, R and O'Hara, J (2020) Appetite and energy intake responses to breakfast consumption and carbohydrate supplementation in hypoxia. Appetite, 147. ISSN 1095-8304 DOI: https://doi.org/10.1016/j.appet.2019.104564
Griffiths, A and Shannon, O and Matu, J and King, R and Deighton, K and O'Hara, J (2019) Response : Commentary on the effects of hypoxia on energy substrate use during exercise. Journal of the International Society of Sports Nutrition, 16. ISSN 1550-2783 DOI: https://doi.org/10.1186/s12970-019-0330-7
Tiller, N and Roberts, J and Beasley, L and Chapman, S and Marques Pinto, J and Smith, L and Wiffin, M and Russell, M and Sparks, A and Duckworth, L and O'Hara, J and Sutton, L and Antonio, J and Willoughby, D and Tarpey, M and Smith-Ryan, A and Ormsbee, M and Astorino, T and Kreider, R and McGinnis, G and Stout, J and Smith, J and Arent, S and Campbell, B and Bannock, L (2019) International Society of Sports Nutrition Position Stand: Nutritional recommendations for single-stage ultra-marathon; training and racing. Journal of the International Society of Sports Nutrition, 16. ISSN 1550-2783 DOI: https://doi.org/10.1186/s12970-019-0312-9
Griffiths, A and Shannon, O and Matu, J and King, R and Deighton, K and O'Hara, J (2019) The effects of environmental hypoxia on substrate utilisation during exercise : A meta-analysis. Journal of the International Society of Sports Nutrition, 16 (10). ISSN 1550-2783 DOI: https://doi.org/10.1186/s12970-019-0277-8
Mellor, A and Bakker-Dyos, J and Howard, M and Boos, C and Cooke, M and Vincent, E and Scott, P and O'Hara, J and Clarke, S and Barlow, M and Matu, J and Deighton, K and Hill, N and Newman, C and Cruttenden, R and Holdsworth, D and Woods, D (2017) The British Services Dhaulagiri Medical Research Expedition 2016 : a unique military and civilian research collaboration. Journal of the Royal Army Medical Corps, 163 (6). pp. 371-375. ISSN 0035-8665 DOI: https://doi.org/10.1136/jramc-2016-000700
Matu, J and O'Hara, J and Hill, N and Clarke, S and Boos, C and Newman, C and Holdsworth, D and Ispoglou, T and Duckworth, L and Woods, D and Mellor, A and Deighton, K (2017) Changes in appetite, energy intake, body composition and circulating ghrelin constituents during an incremental trekking ascent to high altitude. European Journal of Applied Physiology, 117 (9). pp. 1917-1928. ISSN 1439-6319 DOI: https://doi.org/10.1007/s00421-017-3683-0
Boos, C and Vincent, E and Mellor, A and Woods, D and Newman, C and Cruttenden, R and Barlow, M and Cooke, M and Deighton, K and Scott, P and Clarke, S and O'Hara, J (2017) The effect of high altitude on central blood pressure and arterial stiffness. Journal of Human Hypertension, 31. pp. 715-719. ISSN 0950-9240 DOI: https://doi.org/10.1038/jhh.2017.40
Woods, D and O'Hara, J and Boos, C and Hodkinson, P and Tsakirides, C and Hill, N and Jose, D and Hawkins, A and Phillipson, K and Hazlerigg, A and Arjomandkhah, N and Gallagher, L and Holdsworth, D and Cooke, M and Green, N and Mellor, A (2017) Markers of physiological stress during exercise under conditions of normoxia, normobaric hypoxia, hypobaric hypoxia and genuine high altitude. European Journal of Applied Physiology, 117 (5). pp. 893-900. ISSN 1439-6319 DOI: https://doi.org/10.1007/s00421-017-3573-5
Till, KA and Morley, D and O'Hara, J and Jones, B and Chapman, C and Beggs, CB and Cooke, CB and Cobley, S (2017) A retrospective longitudinal analysis of anthropometric and physical qualities that associate with adult career attainment in junior rugby league players. Journal of Science and Medicine in Sport, 20 (11). pp. 1029-1033. ISSN 1440-2440 DOI: https://doi.org/10.1016/j.jsams.2017.03.018
Boos, C and Holdsworth, D and Woods, D and O'Hara, J and Brooks, N and Macconnachie, L and Bakker-Dyos, J and Paisey, J and Mellor, A (2017) Assessment of Cardiac Arrhythmias at Extreme High Altitude Using an Implantable Cardiac Monitor: REVEAL HA Study. Circulation, 135 (8). pp. 812-814. ISSN 0009-7322 DOI: https://doi.org/10.1161/CIRCULATIONAHA.116.026584
O'Hara, J and Woods, D and Mellor, A and Boos, C and Gallagher, L and Tsakirides, C and Arjomandkhah, N and Holdsworth, D and Cooke, CB and Morrison, D and Preston, T and King, R (2017) 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 Reports, 5 (1). e13101. ISSN 2051-817X DOI: https://doi.org/10.14814/phy2.13101
Wainwright, B and Cooke, CB and O'Hara, J (2017) The validity and reliability of a sample of 10 Wattbike cycle ergometers. Journal of Sports Sciences, 35 (14). pp. 1451-1458. ISSN 1466-447X DOI: https://doi.org/10.1080/02640414.2016.1215495
Brightmore, A and O'Hara, J and Till, K and Cobley, S and Hubka, T and Emmonds, S and Cooke, CB (2016) Movement and Physiological Demands of Australasian National Rugby League Referees. International Journal of Sports Physiology and Performance, 11 (8). pp. 1080-1087. ISSN 1555-0273 DOI: https://doi.org/10.1123/ijspp.2015-0415
Barlow, M and Rowe, J and Ruffle, O and Davidson, M and O'Hara, J (2016) Anthropometric and Performance Perspectives of Female Competitive Surfing. Human Movement, 17 (3). pp. 154-161. ISSN 1899-1955 DOI: https://doi.org/10.1515/humo-2016-0023
Shannon, O and Duckworth, L and Barlow, M and Woods, D and Lara, J and Siervo, M and O'Hara, J (2016) Dietary nitrate supplementation enhances high-intensity running performance in moderate normobaric hypoxia, independent of aerobic fitness. Nitric Oxide, 59. pp. 63-70. ISSN 1089-8611 DOI: https://doi.org/10.1016/j.niox.2016.08.001
Shannon, O and Barlow, M and Duckworth, L and Woods, D and Griffiths, A and Grindrod, A and O'Hara, J (2016) The reliability of a pre-loaded treadmill time-trial in moderate normobaric hypoxia. International Journal of Sports Medicine, 37 (10). pp. 825-830. ISSN 1439-3964 DOI: https://doi.org/10.1055/s-0042-108651
Lees, MJ and Oldroyd, B and Jones, B and Brightmore, A and O'Hara, J and Barlow, M and Till, K and Hind, K (2016) Three-Compartment Body Composition Changes in Professional Rugby Union Players Over One Competitive Season : A Team and Individualized Approach. Journal of Clinical Densitometry, 20 (1). pp. 50-57. ISSN 1094-6950 DOI: https://doi.org/10.1016/j.jocd.2016.04.010
Boos, C and O'Hara, J and Mellor, A and Hodkinson, PD and Tsakirides, C and Reeve, N and Gallagher, L and Green, ND and Woods, DR (2016) A Four-Way Comparison of Cardiac Function with Normobaric Normoxia, Normobaric Hypoxia, Hypobaric Hypoxia and Genuine High Altitude. PLoS One, 11 (4). -. ISSN 1932-6203 DOI: https://doi.org/10.1371/journal.pone.0152868
Boos, C and Mellor, A and O'Hara, J and Tsakirides, C and Woods, DR (2016) The Effects of Sex on Cardiopulmonary Responses to Acute Normobaric Hypoxia. High Altitude Medicine and Biology, 17 (2). pp. 108-115. ISSN 1527-0297 DOI: https://doi.org/10.1089/ham.2015.0114
Till, K and Jones, B and O'Hara, J and Barlow, M and Brightmore, A and Lees, M and Hind, K (2016) Three-Compartment Body Composition in Academy and Senior Rugby League Players. International journal of sports physiology and performance, 11 (2). 191 - 196. ISSN 1555-0265 DOI: https://doi.org/10.1123/ijspp.2015-0048
Boos, C and Bakker-Dyos, J and Watchorn, J and Woods, DR and O'Hara, J and Macconnachie, L and Mellor, A (2016) A comparison of two methods of heart rate variability assessment at high altitude. Clinical physiology and functional imaging, 37. pp. 582-587. ISSN 1475-0961 DOI: https://doi.org/10.1111/cpf.12334
Till, K and Jones, BL and Cobley, S and Morley, D and O'Hara, J and Chapman, C and Cooke, CB and Beggs, CB (2016) Identifying Talent in Youth Sport: A Novel Methodology Using Higher-Dimensional Analysis. PLoS One, 11 (5). e0155047. ISSN 1932-6203 DOI: https://doi.org/10.1371/journal.pone.0155047
Jones, B and Till, K and Emmonds, S and King, RFGJ and Gray, MP and Beggs, CB and O'Hara, J (2016) Hydration strategies of professional elite rugby league referees during super league matches. International Journal of Sports Science and Coaching, 11 (1). 116 - 121. ISSN 1747-9541 DOI: https://doi.org/10.1177/1747954115624811
Emmonds, S and O'Hara, J and Till, K and Jones, B and Brightmore, A and Cooke, CB (2015) Physiological and Movement Demands of Rugby League Referees: Influence on Penalty Accuracy. Journal of strength and conditioning research / National Strength & Conditioning Association, 29 (12). 3367 - 3374. ISSN 1064-8011 DOI: https://doi.org/10.1519/jsc.0000000000001002
Till, K and Cobley, S and Morley, D and O'Hara, J and Chapman, C and Cooke, CB (2015) The influence of age, playing position, anthropometry and fitness on career attainment outcomes in rugby league. Journal of sports sciences, 34 (13). 1240 - 1245. ISSN 0264-0414 DOI: https://doi.org/10.1080/02640414.2015.1105380
Shah, NM and Hussain, S and Cooke, M and O'Hara, J and Mellor, A (2015) Wilderness medicine at high altitude: recent developments in the field. Open access journal of sports medicine, 6. 319 - 328. DOI: https://doi.org/10.2147/OAJSM.S89856
Jones, B and Till, K and King, R and Gray, M and O'Hara, J (2015) Are Habitual Hydration Strategies of Female Rugby League Players Sufficient to Maintain Fluid Balance and Blood Sodium Concentration During Training and Match-Play? A Research Note From the Field. Journal of strength and conditioning research / National Strength & Conditioning Association, 30 (3). 875 - 880. ISSN 1064-8011 DOI: https://doi.org/10.1519/JSC.0000000000001158
Ispoglou, T and OʼKelly, D and Angelopoulou, A and Bargh, MJ and O'Hara, J and Duckworth, LC (2015) Mouth Rinsing With Carbohydrate Solutions at the Postprandial State Fail to Improve Performance During Simulated Cycling Time Trials. Journal of strength and conditioning research / National Strength & Conditioning Association, 29 (8). 2316 - 2325. ISSN 1064-8011 DOI: https://doi.org/10.1519/jsc.0000000000000882
Duckworth, LC and Backhouse, SH and O'Hara, J and Stevenson, EJ (2015) Effect of Galactose Ingestion Before and During Exercise on Substrate Oxidation, Postexercise Satiety, and Subsequent Energy Intake in Females. Journal of the American College of Nutrition, 35 (1). 1 - 12. ISSN 0731-5724 DOI: https://doi.org/10.1080/07315724.2014.994790
Jones, B and Till, K and Barlow, M and Lees, M and O'Hara, J and Hind, K (2015) Anthropometric and Three-Compartment Body Composition Differences between Super League and Championship Rugby League Players: Considerations for the 2015 Season and Beyond. PloS one, 10 (7). e0133188 - ?. DOI: https://doi.org/10.1371/journal.pone.0133188
Jones, BL and O'Hara, J and Till, K and King, RF (2015) Dehydration and hyponatremia in professional rugby union players: a cohort study observing english premiership rugby union players during match play, field, and gym training in cool environmental conditions. Journal of strength and conditioning research / National Strength & Conditioning Association, 29 (1). 107 - 115. ISSN 1064-8011 DOI: https://doi.org/10.1519/jsc.0000000000000620
O'Hara, J and Carroll, S and Cooke, CB and King, RF (2014) The effect of pre-exercise galactose and glucose ingestion on high-intensity endurance cycling. Journal of strength and conditioning research / National Strength & Conditioning Association, 28 (8). 2145 - 2153. ISSN 1064-8011 DOI: https://doi.org/10.1519/jsc.0000000000000372
Cobley, S and Till, K and O'Hara, J and Cooke, CB and Chapman, C (2014) Variable and changing trajectories in youth athlete development: further verification in advocating a long-term inclusive tracking approach. Journal of strength and conditioning research / National Strength & Conditioning Association, 28 (7). 1959 - 1970. ISSN 1064-8011 DOI: https://doi.org/10.1519/jsc.0000000000000353
Seims, A and O'Hara, J and King, R and Cooke, CB (2014) Inspiratory muscle training and its effect on oxygen saturation and perceptions of effort and dyspnoea during a trek to Everest base camp. High Altitude Medicine & Biology, 15 (2). A273 - A273. DOI: https://doi.org/10.1089/ham.2014.1451.abstracts
Seims, A and O'Hara, J and King, R and Cooke, CB (2014) Inspiratory muscle training and its effect on indices of physiological and perceived stress during incremental walking exercise in normobaric hypoxia. High Altitude Medicine and Biology, 15 (2). A272. ISSN 1557-8682 DOI: https://doi.org/10.1089/ham.2014.1451.abstracts
Till, K and Cobley, S and O'Hara, J and Morley, D and Chapman, C and Cooke, CB (2014) Retrospective analysis of anthropometric and fitness characteristics associated with long-term career progression in Rugby League. Journal of science and medicine in sport / Sports Medicine Australia, 18 (3). 310 - 314. ISSN 1440-2440 DOI: https://doi.org/10.1016/j.jsams.2014.05.003
Woods, DR and Mellor, A and Begley, J and Stacey, M and O'Hara, J and Hawkins, A and Yarker, J and Foxen, S and Smith, C and Boos, C (2013) Brain natriuretic peptide and NT-proBNP levels reflect pulmonary artery systolic pressure in trekkers at high altitude. Physiological research / Academia Scientiarum Bohemoslovaca, 62 (6). 597 - 603. ISSN 0862-8408
O'Hara, J and Brightmore, A and Till, K and Mitchell, I and Cummings, S and Cooke, CB (2013) Evaluation of movement and physiological demands of rugby league referees using global positioning systems tracking. International journal of sports medicine, 34 (9). 825 - 831. ISSN 0172-4622 DOI: https://doi.org/10.1055/s-0033-1333694
Till, K and Cobley, S and O'Hara, J and Chapman, C and Cooke, CB (2013) A longitudinal evaluation of anthropometric and fitness characteristics in junior rugby league players considering playing position and selection level. Journal of science and medicine in sport / Sports Medicine Australia, 16 (5). 438 - 443. ISSN 1440-2440 DOI: https://doi.org/10.1016/j.jsams.2012.09.002
Till, K and Cobley, S and O'Hara, J and Chapman, C and Cooke, CB (2013) An individualized longitudinal approach to monitoring the dynamics of growth and fitness development in adolescent athletes. Journal of strength and conditioning research / National Strength & Conditioning Association, 27 (5). 1313 - 1321. ISSN 1064-8011 DOI: https://doi.org/10.1519/JSC.0b013e31828a1ea7
Till, K and Cobley, S and O'Hara, J and Cooke, CB and Chapman, C (2013) Considering maturation status and relative age in the longitudinal evaluation of junior rugby league players. Scandinavian journal of medicine & science in sports, 24 (3). 569 - 576. ISSN 0905-7188 DOI: https://doi.org/10.1111/sms.12033
Mellor, A and Boos, C and Stacey, M and Hooper, T and Smith, C and Begley, J and Yarker, J and Piper, R and O'Hara, J and King, R and Turner, S and Woods, DR (2013) Neutrophil gelatinase-associated lipocalin: its response to hypoxia and association with acute mountain sickness. Disease markers, 35 (5). 537 - 542. ISSN 0278-0240 DOI: https://doi.org/10.1155/2013/601214
O'Hara, J and Carroll, S and Cooke, CB and Morrison, DJ and Preston, T and King, RF (2012) Preexercise galactose and glucose ingestion on fuel use during exercise. Medicine and science in sports and exercise, 44 (10). 1958 - 1967. ISSN 0195-9131 DOI: https://doi.org/10.1249/MSS.0b013e318258bf85
Fearnley, D and Sutton, L and O'Hara, J and Brightmore, A and King, R and Cooke, CB (2012) Case study of a female ocean racer: prerace preparation and nutritional intake during the Vendee Globe 2008. International journal of sport nutrition and exercise metabolism, 22 (3). 212 - 219. ISSN 1526-484X
O'Hara, J and Thomas, A and Seims, A and Cooke, CB and King, RF (2012) Reliability of a high-intensity endurance cycling test. International journal of sports medicine, 33 (1). 18 - 25. ISSN 0172-4622 DOI: https://doi.org/10.1055/s-0031-1284340
Till, K and Cobley, S and O'Hara, J and Brightmore, A and Cooke, CB and Chapman, C (2011) Using anthropometric and performance characteristics to predict selection in junior UK Rugby League players. Journal of science and medicine in sport / Sports Medicine Australia, 14 (3). 264 - 269. ISSN 1440-2440 DOI: https://doi.org/10.1016/j.jsams.2011.01.006
Harley, JA and Hind, K and O'Hara, J (2011) Three-compartment body composition changes in elite rugby league players during a super league season, measured by dual-energy X-ray absorptiometry. Journal of strength and conditioning research / National Strength & Conditioning Association, 25 (4). 1024 - 1029. ISSN 1064-8011 DOI: https://doi.org/10.1519/JSC.0b013e3181cc21fb
Till, K and Cobley, S and Wattie, N and O'Hara, J and Cooke, CB and Chapman, C (2010) The prevalence, influential factors and mechanisms of relative age effects in UK Rugby League. Scandinavian journal of medicine & science in sports, 20 (2). 320 - 329. ISSN 0905-7188 DOI: https://doi.org/10.1111/j.1600-0838.2009.00884.x
Seims, A and O'Hara, J and King, RFGJ and Thomas, A and Cooke, CB (2006) Core Temperature Responses of Fire-fighter Instructors During Work in a Hot and Normal Environment. MEDICINE AND SCIENCE IN SPORTS AND EXERCISE, 38 (5). S58 - S58. ISSN 0195-9131 DOI: https://doi.org/10.1249/00005768-200605001-00262
Conference or Workshop Item
King, A and O'Hara, J and Morrison, D and Preston, T and King, R (2017) Alterations in Exogenous Carbohydrate, Liver and Muscle Glycogen Oxidation with Different Doses of Glucose and Fructose ingestion during Prolonged Cycling. In: American College of Sports Medicine, 30 May 2017 - 03 June 2017, Denver. DOI: https://doi.org/10.1249/01.mss.0000517352.37238.50
Seims, A and O'Hara, J and King, R and Cooke, CB (2014) Inspiratory muscle training and its effect on indices of physiological and perceived stress during incremental walking exercise in normobaric hypoxia. In: X World Congress on High Altitude Medicine and Physiology & Mountain Emergency Medicine Hypoxia and Cold—From Science to Treatment, 25 May 2014 - 31 May 2014, Italy. DOI: https://doi.org/10.1089/ham.2014.1451.abstracts
Seims, A and O'Hara, J and King, R and Cooke, CB (2014) Inspiratory muscle training and its effect on oxygen saturation and perceptions of effort and dyspnoea during a trek to Everest base camp. In: X World Congress on High Altitude Medicine and Physiology & Mountain Emergency Medicine Hypoxia and Cold - From Science to Treatment, 25 May 2014 - 31 May 2014, Bolzano, Italy. DOI: https://doi.org/10.1089/ham.2014.1451.abstracts
Seims, A and Thomas, AL and Cooke, CB and Barlow, M and O'Hara, J (2006) Changes in body composition of elite mountaineers preceding an attempt to summit Everest. In: BASES Annual Conference, 11th - 13th September 2006, Heriot-Watt University.