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Heart rate variability, training

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https://www.readbyqxmd.com/read/29324576/intermittent-cooling-during-judo-training-in-a-warm-humid-environment-reduces-autonomic-and-hormonal-impact
#1
Eduardo Carballeira, José Morales, David H Fukuda, María L Granada, Vicente Carratalá-Deval, Alfonso López Díaz de Durana, Jeffrey R Stout
The purpose of this study was to identify the effects of superficial cooling on physiological responses while training in a warm, humid environment during an international judo training camp. Sixteen judokas (8 women and 8 men) participated in the experiment. Four high-level women and four men were randomly assigned to wear a cooling vest (vest group, VG) during the recovery periods within a training session (i.e. 8 bouts of 5 min fighting with 5 min rest) and up to 10 min after the session, while the remaining athletes in the control group (CG) trained without the use of any cooling aids...
January 5, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29289376/one-session-of-autogenic-training-increases-acute-subjective-sexual-arousal-in-premenopausal-women-reporting-sexual-arousal-problems
#2
Amelia M Stanton, J Gregory Hixon, Lindsey M Nichols, Cindy M Meston
BACKGROUND: Below average heart rate variability (HRV) has been associated with sexual arousal dysfunction and overall sexual dysfunction in women. Autogenic training, a psychophysiologic relaxation technique, has been shown to increase HRV. In a recent study, sexually healthy women experienced acute increases in physiologic (ie, genital) and subjective sexual arousal after 1 brief session of autogenic training. AIM: To build on these findings by testing the effects of a single session of autogenic training on sexual arousal in a sample of women who reported decreased or absent sexual arousal for at least 6 months...
January 2018: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/29288436/the-relationships-between-internal-and-external-measures-of-training-load-and-intensity-in-team-sports-a-meta-analysis
#3
REVIEW
Shaun J McLaren, Tom W Macpherson, Aaron J Coutts, Christopher Hurst, Iain R Spears, Matthew Weston
BACKGROUND: The associations between internal and external measures of training load and intensity are important in understanding the training process and the validity of specific internal measures. OBJECTIVES: We aimed to provide meta-analytic estimates of the relationships, as determined by a correlation coefficient, between internal and external measures of load and intensity during team-sport training and competition. A further aim was to examine the moderating effects of training mode on these relationships...
December 29, 2017: Sports Medicine
https://www.readbyqxmd.com/read/29248699/machine-learning-ensemble-modelling-to-classify-caesarean-section-and-vaginal-delivery-types-using-cardiotocography-traces
#4
Paul Fergus, Malarvizhi Selvaraj, Carl Chalmers
Human visual inspection of Cardiotocography traces is used to monitor the foetus during labour and avoid neonatal mortality and morbidity. The problem, however, is that visual interpretation of Cardiotocography traces is subject to high inter and intra observer variability. Incorrect decisions, caused by miss-interpretation, can lead to adverse perinatal outcomes and in severe cases death. This study presents a review of human Cardiotocography trace interpretation and argues that machine learning, used as a decision support system by obstetricians and midwives, may provide an objective measure alongside normal practices...
December 8, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/29247273/live-high-train-low-guided-by-daily-heart-rate-variability-in-elite-nordic-skiers
#5
Laurent Schmitt, Sarah J Willis, Anthony Fardel, Nicolas Coulmy, Gregoire P Millet
PURPOSE: To analyze if live high-train low (LHTL) effectiveness is improved when daily training is guided by heart rate variability (HRV). METHODS: Twenty-four elite Nordic skiers took part in a 15-day LHTL study and were randomized into a HRV-guided training hypoxic group (H-HRV, n = 9, sleeping in normobaric hypoxia, FiO2 = 15.0%) and two predefined training groups sleeping either in hypoxia (H, n = 9, FiO2 = 15.0%) or normoxia (N, n = 6). HRV and training loads (TL) were recorded daily...
December 15, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29239982/postexercise-hypotension-and-heart-rate-variability-responses-subsequent-to-traditional-paired-set-and-superset-training-methods
#6
Gabriel A Paz, Eliseo Iglesias-Soler, Jeffrey M Willardson, Marianna de Freitas Maia, Humberto Miranda
The purpose of this study was to compare training volume, post-exercise hypotension (PEH) and heart rate variability (HRV) responses to different strength training methods. Thirteen trained men volunteered for this study. Three training methods were completed in a randomized design, which included: Traditional Set (TS) - three successive sets for the lying bench press (LBP), lat pulldown (LPD), incline 45° bench press (BP45), seated close-grip row (SCR), triceps extension (TE), and biceps curl (BC), with a 90 sec...
December 11, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29238298/enhancement-of-pleasure-during-spontaneous-dance
#7
Nicolò F Bernardi, Antoine Bellemare-Pepin, Isabelle Peretz
Dancing emphasizes the motor expression of emotional experiences. The bodily expression of emotions can modulate the subjective experience of emotions, as when adopting emotion-specific postures and faces. Thus, dancing potentially offers a ground for emotional coping through emotional enhancement and regulation. Here we investigated the emotional responses to music in individuals without any prior dance training while they either freely danced or refrained from movement. Participants were also tested while imitating their own dance movements but in the absence of music as a control condition...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/29238242/heart-rate-variability-is-a-moderating-factor-in-the-workload-injury-relationship-of-competitive-crossfit%C3%A2-athletes
#8
Sean Williams, Thomas Booton, Matthew Watson, Daniel Rowland, Marco Altini
Heart rate variability (HRV) is a popular tool for monitoring training adaptation and readiness in athletes, but it also has the potential to indicate early signs of somatic tissue overload prior to the onset of pain or fully developed injury. Therefore, the aim of this study was to investigate the interaction between HRV, workloads, and risk of overuse problems in competitive CrossFit™ athletes. Daily resting HRV and workloads (duration × session-RPE) were recorded in six competitive CrossFit™ athletes across a 16 week period...
December 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/29233238/neck-kinematics-and-electromyography-while-wearing-head-supported-mass-during-running
#9
Matthew M Hanks, JoEllen M Sefton, Gretchen D Oliver
BACKGROUND: Advanced combat helmets (ACH) coupled with night-vision goggles (NVG) are required for tactical athletes during training and service. Head and neck injuries due to head supported mass (HSM) are a common occurrence in military personnel. The current study aimed to investigate the effects of HSM on neck muscle fatigue that may lead to chronic stress and injury of the head and neck. METHODS: Subjects wore an ACH and were affixed with electromagnetic sensors to obtain kinematic data, as well as EMG electrodes to obtain muscle activations of bilateral sternocleidomastoid, upper trapezius, and paraspinal muscles while running on a treadmill...
January 1, 2018: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/29227869/reliability-of-oscillometric-central-blood-pressure-responses-to-lower-limb-resistance-exercise
#10
Simon Fryer, Keeron Stone, Tabitha Dickson, James Faulkner, Danielle Lambrick, Pablo Corres, Lauren Jerred, Lee Stoner
BACKGROUND AND AIMS: Although it is well known that resistance training (RT) is beneficial for patients suffering from a variety of cardiovascular diseases, it remains underutilized as a rehabilitation tool as there is no reliable way to monitor the additional stress placed on the central organs. The current study aimed to determine between-day reliability of central haemodynamic indices using oscillometric pulse wave analysis (PWA) during progressive sub-maximal RT. METHODS: Nineteen healthy young males were tested on 3 different mornings in a fasted state...
December 5, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/29227735/effect-of-8-weeks-of-concurrent-plyometric-and-running-training-on-spatiotemporal-and-physiological-variables-of-novice-runners
#11
Josué Gómez-Molina, Ana Ogueta-Alday, Jesus Camara, Christopher Stickley, Juan García-López
Concurrent plyometric and running training has the potential to improve running economy (RE) and performance through increasing muscle strength and power, but the possible effect on spatiotemporal parameters of running has not been studied yet. The aim of this study was to compare the effect of 8 weeks of concurrent plyometric and running training on spatiotemporal parameters and physiological variables of novice runners. Twenty-five male participants were randomly assigned into two training groups; running group (RG) (n = 11) and running + plyometric group (RPG) (n = 14)...
December 11, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/29222074/changes-of-oxygen-consumption-and-heart-rate-after-acute-myocardial-infarction-during-6-month-follow-up
#12
Yuri Choe, Jae-Young Han, In-Sung Choi, Hyeng-Kyu Park
BACKGROUND: Exercise intensity is a particularly important determinant of physiological responses to exercise training in patients with acute myocardial infarction. Heart rate (HR) is commonly used as a practical way of prescribing and monitoring exercise as specific intensities based on linear relationship between the percentage of maximum heart rate (%HRmax) and the percentage of maximum oxygen consumption (%VO2max) regardless of age, sex or exercise mode. OBJECTIVE: To examine the change in variability in the correlation between %HRmax and %VO2maxafter acute myocardial infarction...
December 5, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/29220206/aerobic-training-but-no-resistance-training-increases-sirt3-in-skeletal-muscle-of-sedentary-obese-male-adolescents
#13
Katya Vargas-Ortiz, Victoriano Pérez-Vázquez, Arturo Figueroa, Francisco J Díaz, Paulina G Montaño-Ascencio, Maciste H Macías-Cervantes
In recent years, prevalence of obesity in children and adolescents has increased. A strategy for prevention and management of obesity is aerobic training (AT) due to its effectiveness to decrease fat mass. AT increases the content of SIRT3, a mitochondrial protein that increases the expression of PGC-1α and NFR1, thereby enhances mitochondrial function and metabolic health. Resistance training (RT) provides metabolic benefits but its effect on SIRT3 content is unknown. To compare the effect of AT and RT on SIRT3, PGC-1α and NRF-1 protein levels in skeletal muscle of sedentary obese adolescents...
December 8, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/29211504/usefulness-of-the-mobile-virtual-reality-self-training-for-overcoming-a-fear-of-heights
#14
Yeon-Ju Hong, Hesun Erin Kim, Young Hoon Jung, Sunghyon Kyeong, Jae-Jin Kim
A mobile virtual reality system, equipped with built-in variables such as heart rate (HR), gaze-down data, and subjective fear rating, can allow individuals with a fear of heights to overcome it by self-training. This study aimed to verify the efficacy and safety of the training program. Forty-eight volunteers completed the four-session self-training program over 2 weeks. They were allocated into either low- or high-fear group by the Acrophobia Questionnaire (AQ)-anxiety scores, and then the changes of the built-in variables and AQ-anxiety scores were analyzed between the groups...
December 6, 2017: Cyberpsychology, Behavior and Social Networking
https://www.readbyqxmd.com/read/29206785/three-weeks-of-overload-training-increases-resting-muscle-sympathetic-activity
#15
Alexandra M Coates, Anthony V Incognito, Jeremy D Seed, Connor J Doherty, Philip J Millar, Jamie F Burr
PURPOSE: Overload training is hypothesized to alter autonomic regulation, though interpretations using indirect measures of heart rate variability are conflicting. The aim of the present study was to examine the effects of overload training on muscle sympathetic nerve activity (MSNA), a direct measure of central sympathetic outflow, in recreational endurance athletes. METHODS: Measurements of heart rate variability, cardiac baroreflex sensitivity (BRS), MSNA (microneurography), and sympathetic BRS were obtained in seventeen healthy triathletes and cyclists after 1-week of reduced training (baseline) and following 3-weeks of either regular (CON, n=7) or overload (OL, n=10) training...
December 2, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29204786/the-influence-of-comprehensive-cardiac-rehabilitation-on-heart-rate-variability-indices-after-cabg-is-more-effective-than-after-pci
#16
Katarzyna Szmigielska, Anna Szmigielska-Kapłon, Anna Jegier
The aim of this study was to evaluate the influence of cardiac rehabilitation (CR) on heart rate variability (HRV) indices in men with coronary artery disease (CAD) treated with percutaneous coronary intervention (PCI) or coronary artery bypass graft surgery (CABG). The study population consisted of 131 male patients with CAD prospectively and consecutively admitted to CR after PCI n = 72, or CABG n = 59. Participants performed cycle ergometer interval training for 45 min three times a week for 8 weeks...
December 4, 2017: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/29203032/detection-and-prediction-of-driver-drowsiness-using-artificial-neural-network-models
#17
Charlotte Jacobé de Naurois, Christophe Bourdin, Anca Stratulat, Emmanuelle Diaz, Jean-Louis Vercher
Not just detecting but also predicting impairment of a car driver's operational state is a challenge. This study aims to determine whether the standard sources of information used to detect drowsiness can also be used to predict when a given drowsiness level will be reached. Moreover, we explore whether adding data such as driving time and participant information improves the accuracy of detection and prediction of drowsiness. Twenty-one participants drove a car simulator for 110min under conditions optimized to induce drowsiness...
December 1, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/29190852/exercise-prescription-using-the-borg-rating-of-perceived-exertion-to-improve-fitness
#18
Manuel Vicente Garnacho-Castaño, Raúl Domínguez, Arturo Muñoz González, Raquel Feliu-Ruano, Noemí Serra-Payá, José Luis Maté-Muñoz
The present study aimed to compare two fitness-training methodologies, instability circuit resistance training (ICRT) versus traditional circuit resistance training (TCRT), applying an experimental model of exercise prescription controlling and modulating exercise load using the Borg rating of perceived exertion. Forty-four healthy young adults age (21.6±2.3 years) were randomly assigned to three groups: TCRT (n=14), ICRT (n=14) and a control group (n=16). Strength and cardiorespiratory tests were chosen to evaluate cardiorespiratory and muscular fitness before and after the training program...
November 30, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/29185161/exercise-therapy-and-autonomic-function-in-heart-failure-patients-a-systematic-review-and-meta-analysis
#19
REVIEW
M J Pearson, N A Smart
A large body of evidence exists indicating that autonomic imbalance is characteristic of heart failure, with several parameters of autonomic function associated with adverse clinical outcomes. The aim of this systematic review and meta-analysis was to investigate the effects of exercise training on parameters of autonomic function in patients with heart failure and where possible quantify the size of the effect. We conducted database searches (PubMed, EMBASE and Cochrane Trials Register to 31 March 2017) for exercise-based rehabilitation trials in heart failure; using search terms, exercise training, autonomic function, heart rate recovery, heart rate variability and muscle sympathetic nerve activity...
November 29, 2017: Heart Failure Reviews
https://www.readbyqxmd.com/read/29182895/efficacy-of-downhill-running-training-for-improving-muscular-and-aerobic-performances
#20
Junichi Toyomura, Hisashi Mori, Kota Tayashiki, Masayoshi Yamamoto, Hiroaki Kanehisa, Sumiaki Maeo
This study investigated effects of downhill (DR) versus level (LR) running training on various muscular and aerobic performances. Eighteen healthy young males conducted either DR (DR group [DRG], n = 10: -10% slope) or LR (LR group [LRG], n = 8) training at a target heart rate (HR) associated with lactate threshold (LT) for 20 min·session<sup>-1</sup>, 3 sessions·week<sup>-1</sup>, for 5 weeks. Before and after the interventions, the following variables were measured: knee extension torque (-150, -30, 0, 30, 150°·s<sup>-1</sup>), leg extension power (simultaneous hip and knee extension: 0...
November 28, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
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