Nathan Townsend
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View article: Impact of Exercise Heat Acclimation on Performance in Hot, Cool and Hypoxic Conditions
Impact of Exercise Heat Acclimation on Performance in Hot, Cool and Hypoxic Conditions Open
Purpose The aim of this study was to confirm the impact of heat acclimation on aerobic performance in hot conditions and elucidate the transfer of heat adaptations to cool and hypoxic environments. Methods Ten males (VO 2peak : 4.50 ± 0.50…
View article: Thermoregulatory responses during road races in hot-humid conditions at the 2019 Athletics World Championships
Thermoregulatory responses during road races in hot-humid conditions at the 2019 Athletics World Championships Open
This paper provides a kinetic observation of both core and skin temperatures in 108 elite athletes, during various outdoor competition events, adding to the very limited data so far available in the literature taken during elite competitio…
View article: Association between thermal responses, medical events, performance, heat acclimation and health status in male and female elite athletes during the 2019 Doha World Athletics Championships
Association between thermal responses, medical events, performance, heat acclimation and health status in male and female elite athletes during the 2019 Doha World Athletics Championships Open
Purpose To determine associations between thermal responses, medical events, performance, heat acclimation and health status during a World Athletics Championships in hot-humid conditions. Methods From 305 marathon and race-walk starters, …
View article: The use of RNA‐based 5'‐aminolevulinate synthase 2 biomarkers in dried blood spots to detect recombinant human erythropoietin microdoses
The use of RNA‐based 5'‐aminolevulinate synthase 2 biomarkers in dried blood spots to detect recombinant human erythropoietin microdoses Open
The hematological module of the Athlete Biological Passport (ABP) is used for indirect detection of blood manipulations; however, the use of this method to detect doping, such as with microdoses of recombinant human erythropoietin (rhEPO),…
View article: Hydration and cooling in elite athletes: relationship with performance, body mass loss and body temperatures during the Doha 2019 IAAF World Athletics Championships
Hydration and cooling in elite athletes: relationship with performance, body mass loss and body temperatures during the Doha 2019 IAAF World Athletics Championships Open
Purpose To characterise hydration, cooling, body mass loss, and core (T core ) and skin (T sk ) temperatures during World Athletics Championships in hot-humid conditions. Methods Marathon and race-walk (20 km and 50 km) athletes (n=83, 36 …
View article: Inspiratory muscle training for enhancing repeated-sprint ability: A pilot study
Inspiratory muscle training for enhancing repeated-sprint ability: A pilot study Open
This pilot study examined the effect of inspiratory muscle training (IMT) on repeated-sprint ability and vastus lateralis reoxygenation. Ten recreationally trained subjects were randomly divided into two groups to complete 4 weeks of IMT o…
View article: Relationship Between the Critical Power Test and a 20-min Functional Threshold Power Test in Cycling
Relationship Between the Critical Power Test and a 20-min Functional Threshold Power Test in Cycling Open
To investigate the agreement between critical power (CP) and functional threshold power (FTP), 17 trained cyclists and triathletes (mean ± SD: age 31 ± 9 years, body mass 80 ± 10 kg, maximal aerobic power 350 ± 56 W, peak oxygen consumptio…
View article: Central and peripheral muscle fatigue following repeated‐sprint running in moderate and severe hypoxia
Central and peripheral muscle fatigue following repeated‐sprint running in moderate and severe hypoxia Open
New Findings What is the central question of this study? Increasing severity of arterial hypoxaemia induces a shift towards greater central, relative to peripheral, mechanisms of fatigue during exhaustive exercise. Does a similar pattern e…
View article: Erythroferrone as a sensitive biomarker to detect stimulation of erythropoiesis
Erythroferrone as a sensitive biomarker to detect stimulation of erythropoiesis Open
Erythroferrone (ERFE) is a glycoprotein hormone secreted by erythroblasts in response to erythropoietin stimulation. ERFE suppresses the hepatic synthesis of the master iron‐regulatory hormone, hepcidin. The impact of erythropoiesis stimul…
View article: Running Velocity Does Not Influence Lower Limb Mechanical Asymmetry
Running Velocity Does Not Influence Lower Limb Mechanical Asymmetry Open
We examined the effect of running velocity upon magnitude and range of asymmetry in the main kinetics and kinematics of treadmill running at constant, submaximal velocities. Nine well-trained, un-injured distance runners ran, in a random o…
View article: Muscle oxygenation maintained during repeated-sprints despite inspiratory muscle loading
Muscle oxygenation maintained during repeated-sprints despite inspiratory muscle loading Open
A high work of breathing can compromise limb oxygen delivery during sustained high-intensity exercise. However, it is unclear if the same is true for intermittent sprint exercise. This project examined the effect of adding an inspiratory l…
View article: Muscle oxygenation maintained during repeated sprints despite inspiratory muscle loading
Muscle oxygenation maintained during repeated sprints despite inspiratory muscle loading Open
A high work of breathing can compromise limb oxygen delivery during sustained high-intensity exercise. However, it is unclear if the same is true for intermittent sprint exercise. This project examined the addition of an inspiratory load o…
View article: Influence of averaging method on muscle deoxygenation interpretation during repeated‐sprint exercise
Influence of averaging method on muscle deoxygenation interpretation during repeated‐sprint exercise Open
Near‐infrared spectroscopy ( NIRS ) is a common tool used to study oxygen availability and utilization during repeated‐sprint exercise. However, there are inconsistent methods of smoothing and determining peaks and nadirs from the NIRS sig…
View article: The Critical Power Model as a Potential Tool for Anti-doping
The Critical Power Model as a Potential Tool for Anti-doping Open
Existing doping detection strategies rely on direct and indirect biochemical measurement methods focused on detecting banned substances, their metabolites, or biomarkers related to their use. However, the goal of doping is to improve perfo…
View article: Prediction of Critical Power and W′ in Hypoxia: Application to Work-Balance Modelling
Prediction of Critical Power and W′ in Hypoxia: Application to Work-Balance Modelling Open
Purpose: Develop a prediction equation for critical power (CP) and work above CP (W') in hypoxia for use in the work-balance ([Formula: see text]) model. Methods: Nine trained male cyclists completed cycling time trials (TT; 12, 7, and 3 m…
View article: Characterisation and description of compressible rubbery materials for component modelling
Characterisation and description of compressible rubbery materials for component modelling Open
Rubbery foams and similar highly compressible rubbery solids form an important class of materials for technology. In order for components made from such materials to be modelled, in Finite Element Analysis (FEA) for example, appropriate co…