Andrew A. Flatt
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View article: Acute Effects of Traditional Versus Cluster Set Upper Body Resistance Training on Heart Rate Variability and Blood Pressure in Trained Men
Acute Effects of Traditional Versus Cluster Set Upper Body Resistance Training on Heart Rate Variability and Blood Pressure in Trained Men Open
Traditional (TRD) and cluster set (CLT) resistance training (RT) configurations differentially affect cardiovascular parameters, such as heart rate variability (HRV) and blood pressure (BP), but the cardiovascular effects of upper body TRD…
View article: Biostrap Kairos Wristband Versus Electrocardiography for Resting Heart Rate Variability Assessment
Biostrap Kairos Wristband Versus Electrocardiography for Resting Heart Rate Variability Assessment Open
The Kairos wristband offers on-demand heart rate variability (HRV) assessment through its “Spot Check” feature, enabling standardized recordings for clinical, research, or self-tracking purposes, but its validity is untested. Therefore, we…
View article: One CHiP to rule them all? Mechanistic insight into carfilzomib-induced lung injury with neutrophil extracellular trap formation following cellular immunotherapy
One CHiP to rule them all? Mechanistic insight into carfilzomib-induced lung injury with neutrophil extracellular trap formation following cellular immunotherapy Open
Not available.
View article: A Variabilidade da Frequência Cardíaca em Repouso está Independentemente Associada aos Escores de Classificação de Gordura Visceral em Homens Adultos Sauditas
A Variabilidade da Frequência Cardíaca em Repouso está Independentemente Associada aos Escores de Classificação de Gordura Visceral em Homens Adultos Sauditas Open
Men in the lowest VFR category had the highest HRV. VFR was more strongly associated with HRV than body fat percentage and MMVR. Time domain parameters were more sensitive to VAT than frequency domain parameters. HRV parameters could be th…
View article: Residual Effects of Same Day Lower Extremity Strength Training on Countermovement Jump Performance in Collegiate Women Athletes
Residual Effects of Same Day Lower Extremity Strength Training on Countermovement Jump Performance in Collegiate Women Athletes Open
Balancing of strength programming intensity with sport demands is necessary to avoid excessive workloads that could inhibit performance. To expand previous jump height focused literature, this study evaluated whether countermovement jump (…
View article: Validity and Efficacy of the Elite HRV Smartphone Application during Slow-Paced Breathing
Validity and Efficacy of the Elite HRV Smartphone Application during Slow-Paced Breathing Open
Slow-paced breathing is a clinical intervention used to increase heart rate variability (HRV). The practice is made more accessible via cost-free smartphone applications like Elite HRV. We investigated whether Elite HRV can accurately meas…
View article: Efficacy and Validity of the Elite HRV Smartphone Application During Slow-Paced Breathing
Efficacy and Validity of the Elite HRV Smartphone Application During Slow-Paced Breathing Open
Slow-paced breathing during heart rate variability biofeedback is used to augment cardiac-autonomic modulation. This practice has become widely available with the advent of cost-free smartphone applications such as Elite HRV. However, whet…
View article: Acute beetroot juice reduces blood pressure in young Black and White males but not females
Acute beetroot juice reduces blood pressure in young Black and White males but not females Open
View article: Heart Rate Variability and Chronotype in Young Adult Men
Heart Rate Variability and Chronotype in Young Adult Men Open
Whether morning heart rate variability (HRV) predicts the magnitude of its circadian variation in the absence of disease or is influenced by chronotype is unclear. We aimed to quantify associations between (1) morning HRV and its diurnal c…
View article: Habituation attenuates the sex-specific associations between ischemic pain, blood pressure, and arterial stiffness in young adults
Habituation attenuates the sex-specific associations between ischemic pain, blood pressure, and arterial stiffness in young adults Open
We demonstrate sex differences in the association between pain perception and cardiovascular reactivity (CVR) during ischemic pain. We also demonstrate habituation to pain and reduced CVR during repeated exposure in a sex-independent manne…
View article: Does Exercise Training Improve Cardiac-Parasympathetic Nervous System Activity in Sedentary People? A Systematic Review with Meta-Analysis
Does Exercise Training Improve Cardiac-Parasympathetic Nervous System Activity in Sedentary People? A Systematic Review with Meta-Analysis Open
The aim of this study was to investigate the training-induced effect on cardiac parasympathetic nervous system (PNS) activity, assessed by resting heart rate variability (HRV) and post-exercise heart rate recovery (HRR), in sedentary healt…
View article: Validity of the Polar H10 for RR intervals acquisition during different conditions for heart rate variability analysis in ski mountaineers
Validity of the Polar H10 for RR intervals acquisition during different conditions for heart rate variability analysis in ski mountaineers Open
Wearable devices enable RR interval (RRi) measurements during various conditions. We aimed to assess the validity of the Polar H10 for RRi acquisition during pre-rest stabilization, rest, sympathetic nervous system activity stimulation and…
View article: Actividad cardíaca vagal, volumen e intensidad de entrenamiento en una atleta de fondo keniata. [Cardiac vagal activity, training mileage, and intensity in a Kenyan female distance athlete].
Actividad cardíaca vagal, volumen e intensidad de entrenamiento en una atleta de fondo keniata. [Cardiac vagal activity, training mileage, and intensity in a Kenyan female distance athlete]. Open
El objetivo de este estudio fue analizar las oscilaciones de la actividad cardíaca parasimpática (ACP) en un mesociclo de una atleta keniata. La variabilidad de la frecuencia cardiaca (VFC) se midió durante tres semanas. En la primera sema…
View article: Reliability of Symbolic Analysis of Heart Rate Variability and Its Changes During Sympathetic Stimulation in Elite Modern Pentathlon Athletes: A Pilot Study
Reliability of Symbolic Analysis of Heart Rate Variability and Its Changes During Sympathetic Stimulation in Elite Modern Pentathlon Athletes: A Pilot Study Open
Background and Purpose Most studies on heart rate variability (HRV) in professional athletes concerned linear, time-, and frequency-domain indices, and there is lack of studies on non-linear parameters in this group. The study aimed to det…
View article: P139 The symptomatology of long COVID patients in cheshire and merseyside
P139 The symptomatology of long COVID patients in cheshire and merseyside Open
Background A growing proportion of patients experience ongoing symptoms for more than 12 weeks following an initial COVID-19 illness. Long COVID or post-COVID syndrome is an increasing burden to the NHS. NHS England has mandated the setup …
View article: P140 Does the length of symptoms of long covid affect perceived dyspnoea?
P140 Does the length of symptoms of long covid affect perceived dyspnoea? Open
Introduction and Objective Long COVID or ongoing symptoms post-acute COVID infection can affect up to 20% of patients.1 Dyspnoea can be a cardinal symptom and have a significant impact on patients' quality of life and ability to…
View article: Heart Rate Variability-Guided Training for Enhancing Cardiac-Vagal Modulation, Aerobic Fitness, and Endurance Performance: A Methodological Systematic Review with Meta-Analysis
Heart Rate Variability-Guided Training for Enhancing Cardiac-Vagal Modulation, Aerobic Fitness, and Endurance Performance: A Methodological Systematic Review with Meta-Analysis Open
Purpose: This systematic review with meta-analysis was conducted to establish whether heart rate variability (HRV)-guided training enhances cardiac-vagal modulation, aerobic fitness, or endurance performance to a greater extent than predef…
View article: Perceived Pain Responses to Foam Rolling Associate with Basal Heart Rate Variability
Perceived Pain Responses to Foam Rolling Associate with Basal Heart Rate Variability Open
Background: Foam rolling (FR) is a self-myofascial release technique with unclear effects on autonomic functioning, indexed by heart rate variability (HRV). FR can be perceived as painful or relaxing, which may explain interindividual HRV …
View article: Relationships between Workload, Heart Rate Variability, and Performance in a Recreational Endurance Runner
Relationships between Workload, Heart Rate Variability, and Performance in a Recreational Endurance Runner Open
Background: The association between heart rate variability (HRV), training load (TL), and performance is poorly understood. Methods: A middle-aged recreational female runner was monitored during a competitive 20-wk macrocycle divided into …
View article: Prediction of Simulated 1,000 m Kayak Ergometer Performance in Young Athletes
Prediction of Simulated 1,000 m Kayak Ergometer Performance in Young Athletes Open
This study aimed to develop a predictive explanatory model for the 1,000-m time-trial (TT) performance in young national-level kayakers, from biomechanical and physiological parameters assessed in a maximal graded exercise test (GXT). Twel…
View article: Changes in Short-Term and Ultra-Short Term Heart Rate, Respiratory Rate, and Time-Domain Heart Rate Variability Parameters during Sympathetic Nervous System Activity Stimulation in Elite Modern Pentathlonists—A Pilot Study
Changes in Short-Term and Ultra-Short Term Heart Rate, Respiratory Rate, and Time-Domain Heart Rate Variability Parameters during Sympathetic Nervous System Activity Stimulation in Elite Modern Pentathlonists—A Pilot Study Open
Monitoring of markers reflecting cardiac autonomic activity before and during stressful situations may be useful for identifying the physiological state of an athlete and may have medical or performance implications. The study aimed to det…
View article: Suitability of Ultra-Short-Term Heart Rate Variability in Military Trainees
Suitability of Ultra-Short-Term Heart Rate Variability in Military Trainees Open
We aimed to (a) evaluate the agreement between ultra-short-term and criterion resting heart rate variability (HRV) measures in military trainees, and (b) compare associations between HRV recording lengths and body composition. HRV recordin…
View article: A Pilot Study of the Reliability and Agreement of Heart Rate, Respiratory Rate and Short-Term Heart Rate Variability in Elite Modern Pentathlon Athletes
A Pilot Study of the Reliability and Agreement of Heart Rate, Respiratory Rate and Short-Term Heart Rate Variability in Elite Modern Pentathlon Athletes Open
Research on reliability of heart rate variability (HRV) parameters in athletes has received increasing attention. The aims of this study were to examine the inter-day reliability of short-term (5 min) and ultra-short-term (1 min) heart rat…
View article: Self-reported sleep quality is associated with gut microbiome composition in young, healthy individuals: a pilot study
Self-reported sleep quality is associated with gut microbiome composition in young, healthy individuals: a pilot study Open
View article: Role of Type and Volume of Recreational Physical Activity on Heart Rate Variability in Men
Role of Type and Volume of Recreational Physical Activity on Heart Rate Variability in Men Open
The aim of this study was to investigate the effect of recreational aerobic physical activity (PA) type and volume on heart rate variability (HRV) in Arab men. This was a retrospective, cross-sectional study, and included men (n = 75, age …
View article: 0137 Self-Reported Sleep Quality is Associated with Central Hemodynamics in Healthy Individuals
0137 Self-Reported Sleep Quality is Associated with Central Hemodynamics in Healthy Individuals Open
Introduction Insufficient sleep is associated with arterial stiffness and elevated cardiovascular disease risk. Central hemodynamics are influenced by arterial stiffness, yet independently predict cardiovascular risk. Relationships between…
View article: To vary or not to vary? Interpreting HRV in soccer players
To vary or not to vary? Interpreting HRV in soccer players Open
Within-measure variabilityHeart rate variability (HRV) is becoming one of the most widely used physiological variables to quantify the stress and recovery of soccer players.At rest, cardiac vagal modulation can be inferred by the logarithm…
View article: Heart Rate Variability, Neuromuscular and Perceptual Recovery Following Resistance Training
Heart Rate Variability, Neuromuscular and Perceptual Recovery Following Resistance Training Open
We quantified associations between changes in heart rate variability (HRV), neuromuscular and perceptual recovery following intense resistance training (RT). Adult males (n = 10) with >1 year RT experience performed six sets to failure wit…
View article: Heart Rate Variability Monitoring During Strength and High-Intensity Interval Training Overload Microcycles
Heart Rate Variability Monitoring During Strength and High-Intensity Interval Training Overload Microcycles Open
Objective: In two independent study arms, we determine the effects of strength training (ST) and high-intensity interval training (HIIT) overload on cardiac autonomic modulation by measuring heart rate (HR) and vagal heart rate vari…