Article
Biology
Xin Wang, Xueyi Shang, Xin Li, Shuyuan Liu, Bin Lai, Lizhi Ma, Ying Sun, Lan Ma, Bo Ning, Yan Li, Qian Wang
Summary: This study evaluated the cooling performance of a phase-change material cooling blanket on heart rate and heart rate variability recovery after exercise-induced hyperthermia. The results showed that the PCM cooling blanket effectively reduced core body temperature and had better cooling effects compared to natural cooling. The PCM cooling blanket also lowered heart rate and heart rate variability, and accelerated recovery after exercise-induced hyperthermia. Therefore, the PCM cooling blanket can be considered as a feasible cooling option during transport.
JOURNAL OF THERMAL BIOLOGY
(2023)
Article
Physics, Multidisciplinary
Lina Zhao, Peng Li, Jianqing Li, Chengyu Liu
Summary: The study found that different numbers of ectopic beats affect HRV parameters, with the degree of influence increasing as the number of ectopic beats increases. Among the four indices, Pt-SampEn shows better robustness to ectopic beats.
Article
Health Care Sciences & Services
Sergio Garcia-Gonzalvez, Daniel Lopez-Plaza, Oriol Abellan-Aynes
Summary: The aim of this study was to analyze the effect of competition on anxiety and heart rate variability (HRV) in tennis players. The study found that competitive anxiety and state anxiety were significantly higher before competition compared to before training, while the rest of the variables did not show significant differences. Furthermore, there was no correlation observed between anxiety and heart rate variability in both pre-competition and pre-training conditions. In terms of gender differentiation, females had higher levels of state anxiety and heart rate.
Article
Physiology
Viacheslav Krylov, Alexander Machikhin, Daniil Sizov, Anastasia Guryleva, Anastasia Sizova, Svetlana Zhdanova, Vladimir Tchougounov, Alexander Burlakov
Summary: The magnetic environment may affect the functioning of the cardiovascular system, including hemodynamics, heart rate, and heart rate variability. However, there is a lack of research on the influence of magnetic fields on heart function during early development. This study evaluated the impact of a hypomagnetic field on cardiac function characteristics in transparent zebrafish embryos, and found that hypomagnetic field exposure led to increased embryo mortality, abnormal phenotypes, and increased heartbeat rate.
FRONTIERS IN PHYSIOLOGY
(2022)
Article
Computer Science, Artificial Intelligence
Ali I. I. Siam, Samah A. A. Gamel, Fatma M. M. Talaat
Summary: Stress is a major cause of human health issues, however, many people ignore it until serious physiological and mental disorders occur. Heart rate and blood pressure are commonly used physiological markers to detect mental stress, and this study proposes a method to identify mental stress in automotive drivers using selected biosignals. Six different machine learning models were used to classify stressed and relaxation states, and the RF classifier outperformed other techniques with a classification accuracy of 98.2%, sensitivity of 97%, and specificity of 100% using the drivedb dataset.
NEURAL COMPUTING & APPLICATIONS
(2023)
Article
Health Care Sciences & Services
Daisuke Fujita, Yusuke Kubo, Tatsuya Tagawa
Summary: Venous occlusion of the lower limbs can alter heart rate variability by increasing feedback information, leading to a shift towards sympathetic dominance in the autonomic balance. This study aimed to quantify this effect in healthy young men. Results showed that a pressure of 100 mmHg induced a significant increase in the LF/HF ratio, indicating a shift towards sympathetic dominance. These findings highlight the importance of venous dilation in regulating autonomic cardiac response.
Article
Physiology
Alexandra M. Coates, Philip J. Millar, Jamie F. Burr
Summary: Exercise-induced cardiac fatigue (EICF) refers to a temporary reduction in cardiac function after prolonged-strenuous exercise. This study aimed to assess the impact of exercise intensity on EICF using stress echocardiography, and also explored sex differences. It was found that all cycling loads resulted in similar levels of functional alteration, suggesting a common response to exercise and stress echocardiography. Males experienced greater cardiac alterations than females, possibly due to differences in postexercise hemodynamics.
JOURNAL OF APPLIED PHYSIOLOGY
(2023)
Article
Chemistry, Analytical
Veronica Dudarev, Oswald Barral, Chuxuan Zhang, Guy Davis, James T. Enns
Summary: Wearable sensors are becoming increasingly popular in psychophysiological research due to their ability to collect data outside the laboratory and over an extended period of time. This tutorial focuses on the importance of reliability in wearable sensors and provides statistical tools to assess reliability in both between participants and within-participant designs. Using various commercially available heart rate sensors, we found that measurement reliability varied across sensors and situations, with the highest reliability observed during sleep. Our hope is that researchers can use this systematic quantification of measurement reliability to make informed decisions about wearable devices and measurement procedures that align with their research goals.
Article
Nutrition & Dietetics
Yusen Shan, Matthew David Cook
Summary: Previous studies have shown that New Zealand blackcurrant extract can alter cardiovascular responses at rest, but its prolonged effects on blood pressure and heart rate variability following exercise are unclear. This study found that a 7-day intake of NZBC resulted in a larger post-exercise hypotension response in young, physically active men and women after 1 hour of treadmill exercise at 50% maximal oxygen uptake.
INTERNATIONAL JOURNAL OF SPORT NUTRITION AND EXERCISE METABOLISM
(2023)
Article
Nutrition & Dietetics
Mark Christiani, Gregory J. Grosicki, Andrew A. Flatt
Summary: The study found that ingesting water led to increases in HRV and hemodynamic parameters, while ingesting Gatorade resulted in smaller effects. Additionally, cardiovascular adjustments post-Gatorade intake require at least 45 minutes of waiting time.
APPLIED PHYSIOLOGY NUTRITION AND METABOLISM
(2021)
Article
Chemistry, Analytical
Bruce Rogers, Marcelle Schaffarczyk, Thomas Gronwald
Summary: Monitoring respiratory frequency is valuable in various fields. This study evaluated the accuracy of different hardware and software combinations in measuring respiratory frequency. The results showed high correlations with the reference device and demonstrated the potential for practical usage during endurance exercise.
Article
Agriculture, Dairy & Animal Science
Csaba Szabo, Zsolt Vizesi, Aniko Vincze
Summary: The study focused on the effect of competition level and phase of exercise on heart rate and heart rate variability parameters in show jumpers. Average and maximum heart rates were not significantly affected by the level of competition, but heart rate variability parameters proved to be more sensitive in detecting workload differences, especially in lower-level show jumpers.
Article
Psychology, Biological
Ali Gholamrezaei, Ilse Van Diest, Qasim Aziz, Johan W. S. Vlaeyen, Lukas Van Oudenhove
Summary: This study compared four deep breathing techniques and found that loaded breathing was associated with better cardiovascular effects, while pursed-lips breathing had better emotional responses. The findings suggest that different deep breathing techniques may have varying impacts on physiological and emotional states.
Review
Biophysics
Laszlo Hejjel, Szabolcs Beres
Summary: Accurate fiducial point detection in photoplethysmogram signal is crucial for reliable PRV analysis, with technical factors being more important than physiological factors in the differences between PRV and HRV. Standardization of PPG acquisition and reference point detection is necessary for comparable studies and correct measurement.
PHYSIOLOGICAL MEASUREMENT
(2021)
Article
Medicine, General & Internal
Colt A. Coffman, Adam T. Harrison, Jacob J. M. Kay, Jeffrey P. Holloway, Michael F. LaFountaine, Robert Davis Moore
Summary: This study investigated the relationship between neurological outcomes following adolescent concussion and family history of neurodegenerative diseases (fhNDD). The findings indicated that adolescents with fhNDD showed greater somatic symptoms, alterations in heart rate variability, and early blunted cardio-autonomic reactivity compared to those without fhNDD.
JOURNAL OF CLINICAL MEDICINE
(2021)
Review
Medicine, General & Internal
Brian Heilbronn, Kenji Doma, Wade Sinclair, Jonathan Connor, Lachlan Irvine-Brown, Anthony Leicht
Summary: This study examined the magnitude of physiological stress in military personnel following task-specific training activities. The results showed that military training activities led to muscle damage, decreased strength and power, and lower testosterone levels. There were no significant differences in inflammation, cortisol, or insulin-like growth factor 1 compared to preactivity measures. The findings suggest that regular monitoring of these markers can help implement appropriate recovery periods to optimize training adaptations and occupational performance.
Article
Hospitality, Leisure, Sport & Tourism
C. J. Wedding, M. A. Gomez, C. T. Woods, W. H. Sinclair, A. S. Leicht, Wilbur Kraak, Ben Jones, Craig Twist
Summary: This study aims to examine the effects of match-related contextual variables on positional groups and match outcome in the National Rugby League (NRL). The results suggest that interchange forwards, utility backs, and adjustables may play a crucial role in determining match outcome. In contrast to team-level research, defensive actions are found to be more important at a positional level.
INTERNATIONAL JOURNAL OF SPORTS SCIENCE & COACHING
(2023)
Article
Cardiac & Cardiovascular Systems
Jenni J. Hekkanen, Tuomas Kentta, Lauri Holmstrom, Mikko P. Tulppo, Olavi H. Ukkola, Lasse Pakanen, M. Juhani Junttila, Heikki Huikuri, Juha S. Perkiomaki
Summary: This study evaluated the relationship between electrocardiographic repolarization and atrial depolarization with left ventricular fibrosis. The results showed that abnormal values of T- and P-wave morphology are associated with ventricular fibrosis, which explains their prognostic significance.
Article
Medicine, General & Internal
Chelsea Smith, Kenji Doma, Brian Heilbronn, Anthony Leicht
Summary: This study aimed to assess the reliability of a specialized system during standard assessments in military personnel. The results showed that the reliability of most variables measured using this system was moderate to good. The documented variability in metrics will assist practitioners in monitoring injury risk and training interventions in military personnel using emerging technology.
Article
Multidisciplinary Sciences
Mikaela J. J. Callinan, Jonathan D. D. Connor, Wade H. H. Sinclair, Anthony S. S. Leicht
Summary: Professional coaches often use performance analysis and metrics to inform their decisions and strategies. This study aimed to explore coaches' perspectives on the successful integration of performance analysts into the high-performance environment. Interviews with elite Rugby Union coaches revealed three main dimensions: the role and purpose of a performance analyst, and the attributes they should possess. Coaches emphasized the importance of the coach-analyst relationship and the analyst's ability to collect, filter, and deliver information, as well as their communication skills and creativity.
Article
Engineering, Mechanical
Alejandro Rodriguez-Fernandez, David Suarez-Iglesias, Alejandro Vaquera, Anthony S. Leicht, Jose Antonio Rodriguez-Marroyo
Summary: This study aimed to examine the inter-system and inter-unit reliability of WIMU PRO (UWB) and Polar Team Pro devices in measuring indoor sport-specific movements. Seventeen active and healthy adults completed one repetition of an indoor team sport circuit, and various measurements were recorded. The results showed significant differences between the two systems, while the inter-unit reliability was moderate to excellent for most variables.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART P-JOURNAL OF SPORTS ENGINEERING AND TECHNOLOGY
(2023)
Article
Genetics & Heredity
Natan D. D. da Silva Jr, Aluisio Andrade-Lima, Marcel R. R. Chehuen, Anthony S. S. Leicht, Patricia C. C. Brum, Edilamar M. M. Oliveira, Nelson Wolosker, Bruno R. A. Pelozin, Tiago Fernandes, Claudia L. M. Forjaz
Summary: Peripheral artery disease (PAD) patients have reduced muscle capillary density. Walking training (WT) promotes angiogenesis in PAD-affected muscle by increasing the gastrocnemius capillary-fiber ratio and the expression of miRNA-126 and vascular endothelium growth factor (VEGF) while decreasing the expression of PI3KR2. These findings suggest that miRNA-126 may play a role in this adaptation by inhibiting PI3KR2 and enabling the progression of the VEGF signaling pathway.
Article
Sport Sciences
Chelsea Smith, Kenji Doma, Brian Heilbronn, Anthony Leicht
Summary: This study aimed to investigate the feasibility and effect of an individualised and force-plate guided training program on physical performance and musculoskeletal injury risk factors in army personnel. The results showed that compared to standard group-designed training, individualised training had a smaller improvement in weight-loaded march time but a greater improvement in deadlift-3RM. Other outcomes were similar between the two groups. Individualised training was feasible within an army setting and produced similar performances to standard group-designed training.
Article
Medicine, Research & Experimental
Tanja Dragun, Courtney V. Brown, Mikko P. Tulppo, Ante Obad, Zeljko Dujic
Summary: Studies have shown that cannabidiol may reduce blood pressure and arterial stiffness in normotensive individuals, but its effects on those with untreated hypertension are still unclear. This study aimed to investigate the influence of cannabidiol on 24-hour ambulatory blood pressure and arterial stiffness in hypertensive individuals. The results demonstrated that oral cannabidiol significantly lowered arterial stiffness, systolic blood pressure, and mean arterial pressure over 24 hours compared to placebo. However, further research is needed to determine the clinical implications and long-term safety of cannabidiol in treating hypertension.
ADVANCES IN THERAPY
(2023)
Article
Physiology
Larissa Di Bella, Kenji Doma, Wade Heath Sinclair, Jonathan Douglas Connor
Summary: This crossover trial compared the effects of different feedback approaches on sprint performance, motivation, and affective mood states in female athletes. The findings showed that providing augmented feedback can improve sprint speed, increase athletes' motivation and satisfaction. Therefore, female athletes should receive augmented feedback in testing and training environments to enhance their physical performance and motivation.
INTERNATIONAL JOURNAL OF SPORTS PHYSIOLOGY AND PERFORMANCE
(2023)
Article
Rehabilitation
Brooke Jenner, Carmel Nottle, Julie L. Walters, Steven W. Saunders, Anthony S. Leicht, Robert G. Crowther
Summary: Injury rates to the lower limb have increased over the past 40 years, coinciding with increases in female sport participation rates. Sport specific tests such as the running vertical jump (RVJ) are utilised for injury risk profiling, however the test-retest reliability is unknown. The aim of this study was to investigate the test-retest reliability of the thorax, pelvis, and lower limb joint angular kinematics and kinetics for the RVJ test in female team sport athletes.
PHYSICAL THERAPY IN SPORT
(2023)
Article
Psychology, Experimental
Enrique Alonso Perez-Chao, Ruben Portes, Carlos Ribas, Alberto Lorenzo, Anthony S. Leicht, Miguel Angel Gomez
Summary: This study examined the impact of fans on home advantage in European professional basketball leagues, finding that home advantage was significantly increased in matches with fans in certain leagues. The presence of spectators enhanced home court advantage and winning percentage, with variations based on team ability and geographical location.
PERCEPTUAL AND MOTOR SKILLS
(2023)
