Article
Biochemical Research Methods
Jenna M. Goodrum, Laura A. Lewis, Matthew N. Fedoruk, Daniel Eichner, Geoffrey D. Miller
Summary: The study compared venous blood collections with capillary blood collections and found that capillary samples can be used as an alternative to venous samples for ABP analysis with consistent results. Capillary blood collection offers the advantages of convenience, non-invasiveness, and cost-effectiveness, and has the potential to increase testing frequency and effectiveness of the ABP program.
DRUG TESTING AND ANALYSIS
(2022)
Article
Physiology
Janis Schierbauer, Sandra Ficher, Paul Zimmermann, Nadine B. Wachsmuth, Walter F. J. Schmidt
Summary: The study aimed to evaluate the individual stroke volume (SV) and blood volume (BV) during exercise and to examine their correlation at different exercise intensities. The results showed that there was a significant correlation between SV and BV. Additionally, a higher BV was associated with a higher SV, particularly at high-intensity exercise. The arterial oxygen content also had an effect on SV.
FRONTIERS IN PHYSIOLOGY
(2022)
Article
Biochemical Research Methods
Monica Mazzarino, Fabio Comunita, Xavier de la Torre, Francesco Molaioni, Francesco Botre
Summary: This study found that systemic administration of miconazole significantly altered the markers of the steroid profile, while limited effects were observed after dermal intake. This was primarily due to miconazole's ability to alter the kinetics/efficacy of deglucuronidation of endogenous steroids by beta-glucuronidase during sample preparation.
DRUG TESTING AND ANALYSIS
(2021)
Article
Sport Sciences
Peter M. Christensen, Jesper Juul Andreasen, Jonas Lyngholm, Ole Sogaard, Jakob Lykkestrup, Morten Hostrup, Lars Nybo, Jens Bangsbo
Summary: Male elite cyclists with average VO2-max of 71 mL/min/kg underwent 7 weeks of high-intensity interval training during the competitive season. The study evaluated the effects of maintaining or reducing total training volume combined with high-intensity interval training. The results showed improvements in time-trial performance for both the reduced and maintained training volume groups, but no significant improvement in preloaded time-trials. This study demonstrates that elite cyclists can benefit from intensified training during the competitive season, regardless of training volume.
SCANDINAVIAN JOURNAL OF MEDICINE & SCIENCE IN SPORTS
(2023)
Article
Physiology
Walter F. J. Schmidt, Nadine Wachsmuth, Jesus Jimenez, Rudy Soria
Summary: In patients with chronic mountain sickness, the decrease in plasma volume partially compensates for the increase in hemoglobin mass, but does not prevent an increase in blood volume, resulting in excessively high hemoglobin concentration.
FRONTIERS IN PHYSIOLOGY
(2022)
Article
Sport Sciences
Tiffany Astolfi, Fabienne Crettaz von Roten, Bengt Kayser, Martial Saugy, Raphael Faiss
Summary: The hematological module of the Athlete Biological Passport (ABP) is utilized for doping control in elite sports by monitoring athletes' blood parameters. Acute training load changes were found to significantly impact hemoglobin levels, highlighting the importance of considering training load fluctuations when interpreting ABP variations for antidoping purposes.
FRONTIERS IN SPORTS AND ACTIVE LIVING
(2021)
Article
Anesthesiology
Andreas Breenfeldt Andersen, Soren Brouw Baungaard, Jacob Bejder, Jonathan Graae, Ana-Marija Hristovska, Marianne Agerskov, Henrik Holm-Sorensen, Nicolai Bang Foss
Summary: This study investigated whether a semi-automated carbon monoxide (CO) rebreathing method accurately detected changes in blood volume (BV) and total hemoglobin mass (tHb), and whether a supine position with legs raised reduced systemic CO dilution time. The results showed that the method precisely detected acute BV changes with a clinically insignificant margin of error, and the 10-minute CO-rebreathing period could be reduced to 6 minutes without affecting BV and tHb calculation. However, individual differences may need further investigation.
JOURNAL OF CLINICAL MONITORING AND COMPUTING
(2023)
Article
Biology
Maud Dumoux, Thomas Glen, Jake L. R. Smith, Elaine M. L. Ho, Luis M. A. Perdigao, Avery Pennington, Sven Klumpe, Neville B. Y. Yee, David Andrew Farmer, Pui Y. A. Lai, William Bowles, Ron Kelley, Juergen M. Plitzko, Liang Wu, Mark Basham, Daniel K. Clare, C. Alistair Siebert, Michele C. Darrow, James H. Naismith, Michael Grange, Giulia Zanetti
Summary: Cryogenic plasma FIB/SEM overcomes challenges in imaging non-stained biological samples, producing high-quality images with automated workflows. This technique allows for three-dimensional imaging of bacteria, human cells, and tissue with resolutions typically ranging from 20-50 nm.
Article
Sport Sciences
Mathew J. Mildenhall, Ed Maunder, Daniel J. Plews, Michael I. Lindinger, Simeon P. Cairns
Summary: This study aimed to investigate the effect of plasma acidosis on mechanical performance and whether bicarbonate supplementation can attenuate plasma acidosis and arterial oxygen desaturation in elite cyclists. The results showed that plasma acidosis was not associated with the decline of peak power output, and bicarbonate supplementation failed to improve arterial oxygen desaturation or mechanical performance.
MEDICINE & SCIENCE IN SPORTS & EXERCISE
(2023)
Article
Biochemical Research Methods
B. Krumm, J. J. Saugy, F. Botre, R. Faiss
Summary: This study investigated the impact of low-volume blood withdrawal on hematological biomarkers considered for anti-doping purposes. Blood withdrawal led to a significant decrease in hemoglobin mass and red blood cell volume at D + 7. However, hemoglobin concentration increased significantly at D + 21. Ferritin was consistently downregulated following blood withdrawal. These results highlight the challenge of monitoring hematological variables for detecting low-volume blood withdrawal.
DRUG TESTING AND ANALYSIS
(2023)
Article
Biochemical Research Methods
Basile Moreillon, Tristan Equey, Tiffany Astolfi, Olivier Salamin, Raphael Faiss
Summary: This study used a multi-parametric model to compare inferred and actual variations in plasma volume in physically active women taking oral contraceptive pills. The results showed that the estimated variations were consistent with the measured variations.
DRUG TESTING AND ANALYSIS
(2022)
Article
Cardiac & Cardiovascular Systems
Xenia Leahova-Cerchez, Emmanuelle Berthelot, Bastien Genet, Olivier Hanon, Patrick Jourdain
Summary: There is a strong correlation between clinical and inferior vena cava (IVC) evaluation in assessing intravascular congestion in ADHF patients older than 75 years. The concomitant assessment of clinical signs and IVC may prevent depletion-related renal failure.
CLINICAL CARDIOLOGY
(2022)
Article
Environmental Sciences
Ilona Pokora, Ewa Sadowska-Krepa, Lukasz Wolowski, Piotr Wyderka, Anna Michnik, Zofia Drzazga
Summary: The study showed that MPHA had minimal impact on body temperatures but led to decreased resting heart rate and physiological strain, as well as influencing blood pressure, hematological indices, and exercise effects. Additionally, sauna baths resulted in modifications of plasma volume restoration during exercise.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2021)
Article
Sport Sciences
Eric C. Haakonssen, Martin Barras, Louise M. Burke, David G. Jenkins, David T. Martin
EUROPEAN JOURNAL OF SPORT SCIENCE
(2016)
Article
Sport Sciences
Israel Halperin, Dale W. Chapman, David T. Martin, Chris Abbiss
JOURNAL OF SPORTS SCIENCES
(2017)
Article
Physiology
Jason C. Bartram, Dominic Thewlis, David T. Martin, Kevin I. Norton
INTERNATIONAL JOURNAL OF SPORTS PHYSIOLOGY AND PERFORMANCE
(2017)
Article
Sport Sciences
Ian C. Dunican, David T. Martin, Shona L. Halson, Reid J. Reale, Brian T. Dawson, John A. Caldwell, Maddison J. Jones, Peter R. Eastwood
JOURNAL OF STRENGTH AND CONDITIONING RESEARCH
(2017)
Article
Multidisciplinary Sciences
Emily C. Dunn, Clare E. Humberstone, K. Fiona Iredalel, David T. Martine, Anthony J. Blazevich
Article
Physiology
Jason C. Bartram, Dominic Thewlis, David T. Martin, Kevin Norton
INTERNATIONAL JOURNAL OF SPORTS PHYSIOLOGY AND PERFORMANCE
(2018)
Article
Sport Sciences
Johann Windt, Kerry MacDonald, David Taylor, Bruno D. Zumbo, Ben C. Sporer, David T. Martin
JOURNAL OF ATHLETIC TRAINING
(2020)
Editorial Material
Physiology
Shona L. Halson, David T. Martin
INTERNATIONAL JOURNAL OF SPORTS PHYSIOLOGY AND PERFORMANCE
(2021)
Article
Physiology
Jason C. Bartram, Dominic Thewlis, David T. Martin, Kevin Norton
Summary: Analyzing the modeling of intermittent work capacity in elite cyclists, the Bartram adjustment was found to be an improvement over the Skiba 2 model, with a focus on W' in this population. However, in the specific context of team pursuit races, all models were too variable for effective use, indicating the need for exploration of individual recovery rates beyond population-specific rates.
INTERNATIONAL JOURNAL OF SPORTS PHYSIOLOGY AND PERFORMANCE
(2022)
Article
Physiology
Alannah K. A. McKay, Trent Stellingwerff, Ella S. Smith, David T. Martin, Inigo Mujika, Vicky L. Goosey-Tolfrey, Jeremy Sheppard, Louise M. Burke
Summary: This paper presents a 6-tiered Participant Classification Framework that can be used to classify individuals with different exercise backgrounds and athletic abilities. The framework can be applied prospectively and retrospectively in research, providing uniformity in classification practices.
INTERNATIONAL JOURNAL OF SPORTS PHYSIOLOGY AND PERFORMANCE
(2022)
Article
Physiology
Charli Sargent, Shona L. Halson, David T. Martin, Gregory D. Roach
Summary: This study examined the sleep patterns of professional cyclists during the Australian Tour Down Under. The results showed that sleep duration did not change significantly during the race and was slightly below the recommended target for adults.
INTERNATIONAL JOURNAL OF SPORTS PHYSIOLOGY AND PERFORMANCE
(2022)
Review
Sport Sciences
Matthew Morrison, David T. Martin, Scott Talpey, Aaron T. Scanlan, Jace Delaney, Shona L. Halson, Jonathon Weakley
Summary: This systematic review aims to identify the most frequently used tests, outcome variables, and normative values for basketball-related physical characteristics in adult male basketball players. The review found a wide range of test and outcome variables being used and indicated the challenges in establishing international standards for physical assessment of basketball players. Recommendations for testing protocols are provided to improve the interpretation of data.
Review
Sport Sciences
Blake D. McLean, Donnie S. Strack, David T. Martin
Summary: An athlete's body is important for their performance and well-being, but game-relevant skills are more crucial than physical fitness in technically-driven team sports. Overemphasis on physical optimization can take away time from priorities. Athletes' non-strategic focus on physical preparation resembles avian 'avoidance preening', wasting time instead of being productive. To create healthy and productive environments, it is necessary to recognize avoidance behaviors and promote collaboration.
INTERNATIONAL JOURNAL OF SPORTS PHYSICAL THERAPY
(2022)
Article
Psychology, Multidisciplinary
Michael A. Maloney, Ian Renshaw, Jonathon Headrick, David T. Martin, Damian Farrow
FRONTIERS IN PSYCHOLOGY
(2018)
Article
Psychology, Experimental
Israel Halperin, Dale W. Chapman, David T. Martin, Rebecca Lewthwaite, Gabriele Wulf
PSYCHOLOGICAL RESEARCH-PSYCHOLOGISCHE FORSCHUNG
(2017)