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Accumulated Oxygen Deficit During Exercise to Exhaustion Determined at Different Supramaximal Work-Rates.
Muniz, Daniel; Pedlar, Charles; Godfrey, Richard; Glaister, Mark (2017-01-01)Purpose: The aim of the study was to determine the effect of supramaximal exercise intensity during constant work-rate cycling to exhaustion on the accumulated oxygen deficit (AOD) and to determine the test–retest reliability ... -
All models are wrong, but the critical power model is useful.
Muniz, Daniel; Maunder, Ed; Brazier, Jon; Hunter, Ben (2023-11-17) -
The Application of non-linear methods to quantify changes to movement dynamics during running: A scoping review
Hunter, Ben; Karsten, Bettina; Greenhalgh, Andrew; Burnley, Mark; Muniz, Daniel (2023-06-17)The aim of this scoping review was to evaluate research approaches that quantify changes to non-linear movement dynamics during running in response to fatigue, different speeds, and fitness levels. PubMed and Scopus were ... -
Author's Response
Muniz, Daniel; Karsten, Bettina; Triska, Christoph; Glaister, Mark (2019-08-01) -
Caffeine and Sprint Cycling Performance: Effects of Torque Factor and Sprint Duration.
Glaister, Mark; Towey, Colin; Jeffries, Owen; Muniz, Daniel; Foley, Paul; McInnes, Gillian (2018-09-11)PURPOSE: The aim of this study was to investigate the influence of torque factor and sprint duration on the effects of caffeine on sprint cycling performance. METHODS: Using a counterbalanced, randomized, double-blind, ... -
Caffeine supplementation and peak anaerobic power output.
Glaister, Mark; Muniz, Daniel; Patterson, Stephen D; Foley, Paul; McInnes, Gillian (2015-07-04)The aim of this study was to investigate the effects of caffeine supplementation on peak anaerobic power output (Wmax). Using a counterbalanced, randomised, double-blind, placebo-controlled design, 14 well-trained men ... -
Calculation of critical speed from raw training data in recreational marathon runners
Smyth, Barry; Muniz, Daniel (2020-12-01)INTRODUCTION: Critical speed (CS) represents the highest intensity at which a physiological steady state may be reached. The aim of this study was to evaluate whether estimations of CS obtained from raw training data can ... -
Changes to Physical Activity, Sitting Time, Eating Behaviours and Barriers to Exercise during the First COVID-19 ‘Lockdown’ in an English Cohort
Kass, Lindsy; Desai, Terun; Sullivan, Keith; Muniz, Daniel; Wells, Amy (2021-09-24)This study aimed to determine the effect of the first English national COVID-19 lockdown on physical activity (PA), sitting time, eating behaviours and body mass in an adult cohort. This was further examined to determine ... -
Commentary on Viewpoint: Using V̇O2max as a marker of training status in athletes - can we do better?
Hunter, Ben; Meyler, Samuel; Muniz, Daniel (2022-07-01)To the editor: Podlogar et al. (1) have presented a compelling argument for using the critical intensity as an alternative method of classifying athletes. It was concluded that the critical intensity best represents the ... -
A comparison of methods to estimate anaerobic capacity: Accumulated oxygen deficit and W' during constant and all-out work-rate profiles.
Muniz, Daniel; Pedlar, Charles; Godfrey, Richard; Glaister, Mark (2017-12-02)This study investigated (i) whether the accumulated oxygen deficit (AOD) and curvature constant of the power-duration relationship (W') are different during constant work-rate to exhaustion (CWR) and 3-min all-out (3MT) ... -
Decoupling of internal and external workload during a marathon: An analysis of durability in 82,303 recreational runner
Smyth, Barry; Maunder, Ed; Meyler, Samuel; Hunter, Ben; Muniz, Daniel (2022-09-30)Aim: This study characterised the decoupling of internal-to-external workload in marathon running and investigated whether decoupling magnitude and onset could improve predictions of marathon performance. Methods: The ... -
The Effects of Caffeine Supplementation on Physiological Responses to Submaximal Exercise in Endurance-Trained Men.
Glaister, Mark; Williams, Benjamin Henley; Muniz, Daniel; Balsalobre-Fernández, Carlos; Foley, Paul (2016-08-17)Objectives The aim of this study was to evaluate the effects of caffeine on physiological responses to submaximal exercise, with a focus on blood lactate concentration ([BLa]). Methods Using a randomised, single-blind, ... -
Effects of dietary nitrate, caffeine, and their combination on 20-km cycling time trial performance.
Glaister, Mark; Pattison, John R; Muniz, Daniel; Patterson, Stephen D; Foley, Paul (2015-01-29)The aim of this study was to examine the acute supplementation effects of dietary nitrate, caffeine, and their combination on 20-km cycling time trial performance. Using a randomized, counterbalanced, double-blind Latin-square ... -
Fractal Analyses of Gait Variability During a Marathon
Hunter, Benjamin; Karsten, Bettina; Greenhalgh, Andrew; Burnley, Mark; Leuchanka, Aliaksandr; Clark, Tim; Muniz, Daniel (2021-08-06)Detrended fluctuation analysis (DFA) and Higuchi’s fractal dimension (HG) have previously been used to characterise motor control during gait. However, there is limited evidence of either being applied to running gait ... -
Methodological Approaches and Related Challenges Associated With the Determination of Critical Power and Curvature Constant
Muniz, Daniel; Karsten, Bettina; Triska, Christoph; Glaister, Mark (2019-02-01)The relationship between exercise intensity and time to task-failure (P-T relationship) is hyperbolic, and characterised by its asymptote (critical power, CP) and curvature constant (W’). The determination of these parameters ... -
A non-linear analysis of running in the heavy and severe intensity domains
Hunter, Benjamin; Greenhalgh, Andrew; Karsten, Bettina; Burnley, Mark; Muniz, Daniel (2021-02-12)Purpose: Altered movement complexity, indicative of system dysfunction, has been demonstrated with increased running velocity and neuromuscular fatigue. The critical velocity (CV) denotes a metabolic and neuromuscular ... -
The physiological demands of elite epée fencers during competition
Oates, Luke; Campbell, Ian; Iglesias, Xavier; Price, Mike; Muniz, Daniel; Bottoms, Lindsay (2019-01-02)The aim of this study was to determine the physiological demands of epée fencing performance. Eight elite male epée fencers competed in a competition consisting of 7 Poule and 7 Direct Elimination (DE) fights. Core temperature ... -
The short-term recovery of sprint cycling performance
Dale, Julian; Muniz, Daniel; Cimadoro, Giuseppe; Glaister, Mark (2022-07-27)Short-term sprint cycling performance recovery was investigated, with consideration to the Match Sprint. Fifteen strength-trained men (age: 24 ± 6 years; height: 1.81 ± 0.08 m; body mass: 83.4 ± 8.4 kg) were first familiarised ... -
Ultra-endurance Participation and Acute Kidney Injury: A Narrative Review
Tidmas, Victoria; Brazier, Jon; Bottoms, Lindsay; Muniz, Daniel; Desai, Terun; Hawkins, Janine; Sridharan, Sivakumar; Farrington, Kenneth (2022-12-15)Increasingly popular, ultra-endurance participation exposes athletes to extremely high levels of functional and structural damage. Ultra-endurance athletes commonly develop acute kidney in-jury (AKI) and other pathologies ...