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Heart rate variability, athlete

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https://www.readbyqxmd.com/read/29238249/influence-of-competitive-anxiety-on-heart-rate-variability-in-swimmers
#1
Leonardo S Fortes, Bruna D V da Costa, Pedro P Paes, José R A do Nascimento Júnior, Lenamar Fiorese, Maria E C Ferreira
The aim of this study was to analyze the relationship between competitive anxiety and heart rate variability (HRV) in swimming athletes. A total of 66 volunteers (41 male and 27 female) who swam the 400-m freestyle in the Brazilian Swimming Championships participated. Thirty minutes before the 400-m freestyle event, the athletes answered the Competitive Anxiety Inventory (CSAI-2R) questionnaire, then underwent anthropometric (body weight, height, and skinfold thickness) and HRV measurements. Then, at a second meeting, held 3 h after the 400-m freestyle event, the athletes returned to the evaluation room for HRV measurement (Polar® RS800cx, Kempele, Finland)...
December 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/29238242/heart-rate-variability-is-a-moderating-factor-in-the-workload-injury-relationship-of-competitive-crossfit%C3%A2-athletes
#2
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
#3
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/29227735/effect-of-8-weeks-of-concurrent-plyometric-and-running-training-on-spatiotemporal-and-physiological-variables-of-novice-runners
#4
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/29206785/three-weeks-of-overload-training-increases-resting-muscle-sympathetic-activity
#5
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/29204350/heart-rate-variability-in-concussed-athletes-a-case-report-using-the-smartphone-electrocardiogram
#6
Ernest Lai, Kenny Boyd, David Albert, Mario Ciocca, Eugene H Chung
No abstract text is available yet for this article.
November 2017: HeartRhythm Case Reports
https://www.readbyqxmd.com/read/29176384/the-use-of-mobile-applications-to-collect-data-in-sport-health-and-exercise-science-a-narrative-review
#7
Daniel J Peart, Carlos Balsalobre-Fernández, Matthew P Shaw
Mobile devices are ubiquitous in the population, and most have the capacity to download applications (apps). Some apps have been developed to collect physiological, kinanthropometric and performance data, however the validity and reliability of such data is often unknown. An appraisal of such apps is warranted as mobile apps may offer an alternative method of data collection for practitioners and athletes with money, time and space constraints. This article identifies and critically reviews the commercially available apps that have been tested in the scientific literature, finding evidence to support the measurement of resting heart through photoplethysmograpy, heart rate variability, range of motion, barbell velocity, vertical jump, mechanical variables during running, and distances covered during walking, jogging and running...
November 22, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29163210/a-wearable-test-for-maximum-aerobic-power-real-time-analysis-of-a-60-m-sprint-performance-and-heart-rate-off-kinetics
#8
Jorge L Storniolo, Gaspare Pavei, Alberto E Minetti
Maximum aerobic power ([Formula: see text]) as an indicator of body fitness is today a very well-known concept not just for athletes but also for the layman. Unfortunately, the accurate measurement of that variable has remained a complex and exhaustive laboratory procedure, which makes it inaccessible to many active people. In this paper we propose a quick estimate of it, mainly based on the heart rate off-kinetics immediately after an all-out 60-m sprint run. The design of this test took into account the recent availability of wrist wearable, heart band free, multi-sensor smart devices, which could also inertially detect the different phases of the sprint and check the distance run...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29143123/recovery-of-the-cardiac-autonomic-nervous-and-vascular-system-after-maximal-cardiopulmonary-exercise-testing-in-recreational-athletes
#9
Heidi Weberruss, Johannes Maucher, Renate Oberhoffer, Jan Müller
OBJECTIVE: The body's adaptation to physical exercise is modulated by sympathetic and parasympathetic (vagal) branches of the autonomic nervous system (ANS). Heart rate variability (HRV), the beat-to-beat variation of the heart, is a proxy measure for ANS activity, whereas blood pressure (BP) is an indicator for cardiovascular function. Impaired vagal activity and lower BP is already described after exercise. However, inconsistent results exist about how long vagal recovery takes and how long post-exercise hypotension persists...
November 15, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29128939/ultra-shortened-time-domain-hrv-parameters-at-rest-and-following-exercise-in-athletes-an-alternative-to-frequency-computation-of-sympathovagal-balance
#10
Michael R Esco, Henry N Williford, Andrew A Flatt, Todd J Freeborn, Fabio Y Nakamura
PURPOSE: The primary purpose of this study was to determine the accuracy of the standard deviation of normal-to-normal intervals (SDNN) to root mean square of successive normal-to-normal interval differences (RMSSD) ratio from 1-min recordings (SDNN:RMSSD1-min) compared to criterion recordings, as well as its relationship to low-frequency-to-high-frequency ratio (LF:HF) at rest and following maximal exercise in a group of collegiate athletes. METHOD: Twenty athletes participated in the study...
November 11, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29124507/pre-performance-physiological-state-heart-rate-variability-as-a-predictor-of-shooting-performance
#11
E Ortega, C J K Wang
Heart rate variability (HRV) is commonly used in sport science for monitoring the physiology of athletes but not as an indicator of physiological state from a psychological perspective. Since HRV is established to be an indicator of emotional responding, it could be an objective means of quantifying an athlete's subjective physiological state before competition. A total of 61 sport shooters participated in this study, of which 21 were novice shooters, 19 were intermediate shooters, and 21 were advanced level shooters...
November 10, 2017: Applied Psychophysiology and Biofeedback
https://www.readbyqxmd.com/read/29068603/differences-in-echocardiography-blood-pressure-stroke-volume-maximal-power-and-profile-of-genes-related-to-cardiac-hypertrophy-in-elite-road-cyclists
#12
Grażyna Janikowska, Aleksandra Żebrowska, Aleksandra Kochańska-Dziurowicz, Urszula Mazurek
BACKGROUND: Regular and moderate exercise is beneficial for improving the efficiency of the heart, but high-intensity physical activity may result in cardiac changes. OBJECTIVES: This study focuses on the identification of the differences in echocardiography and blood variables before exercise, as well as the genes associated with cardiac hypertrophy at rest and in response to graded exercise test. MATERIAL AND METHODS: The study group was made up of 28 road cyclists...
September 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/29023330/heart-rate-variability-and-training-load-among-national-collegiate-athletic-association-division-1-college-football-players-throughout-spring-camp
#13
Andrew A Flatt, Michael R Esco, Jeff R Allen, James B Robinson, Ryan L Earley, Michael V Fedewa, Amy Bragg, Clay M Keith, Jonathan E Wingo
Flatt, AA, Esco, MR, Allen, JR, Robinson, JB, Earley, RL, Fedewa, MV, Bragg, A, Keith, CM, and Wingo, JE. Heart rate variability and training load among National Collegiate Athletic Association Division 1 college football players throughout spring camp. J Strength Cond Res XX(X): 000-000, 2017-The purpose of this study was to determine whether recovery of cardiac-autonomic activity to baseline occurs between consecutive-day training sessions among positional groups of a collegiate football team during Spring camp...
October 10, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28977060/minute-ventilation-variability-during-cardiopulmonary-exercise-test-is-higher-in-sedentary-men-than-in-athletes
#14
Renata Rodrigues Teixeira de Castro, Sabrina Pedrosa Lima, Allan Robson Kluser Sales, Antonio Claudio Lucas da Nóbrega
BACKGROUND: The occurrence of minute-ventilation oscillations during exercise, named periodic breathing, exhibits important prognostic information in heart failure. Considering that exercise training could influence the fluctuation of ventilatory components during exercise, we hypothesized that ventilatory variability during exercise would be greater in sedentary men than athletes. OBJECTIVE: To compare time-domain variability of ventilatory components of sedentary healthy men and athletes during a progressive maximal exercise test, evaluating their relationship to other variables usually obtained during a cardiopulmonary exercise test...
September 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28933715/rating-of-perceived-exertion-for-quantification-of-training-and-combat-loads-during-combat-sport-specific-activities-a-short-review
#15
Maamer Slimani, Philip Davis, Emerson Franchini, Wassim Moalla
The aim of this short review was to summarize data pertaining to the rating of perceived exertion (RPE) methods (RPE value and session-RPE) during combat sport-specific activities (i.e., competition and training) based on many factors, including contest type (i.e., official vs. simulated vs. training), combat rounds, age of participants and muscle groups, and their correlation with physiological variables (i.e., blood lactate concentration [La] and heart rate [HR]). The current review shows higher RPE in a match of mixed martial arts (MMAs) than Brazilian jiu-jitsu and kickboxing matches and during the competitive period compared with the precompetitive period...
October 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28858055/thermoregulatory-and-perceptual-effects-of-a-percooling-garment-worn-underneath-an-american-football-uniform
#16
Megan L Keen, Kevin C Miller, Micah N Zuhl
Keen, ML, Miller, KC, and Zuhl, MN. Thermoregulatory and perceptual effects of a percooling garment worn underneath an American football uniform. J Strength Cond Res 31(11): 2983-2991, 2017-American football athletes are at the highest risk of developing exertional heat illness (EHI). We investigated whether percooling (i.e., cooling during exercise) garments affected perceptual or physiological variables in individuals exercising in the heat while wearing football uniforms. Twelve male participants (age = 24 ± 4 year, mass = 80...
November 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28846046/the-use-of-simulated-altitude-techniques-for-beneficial-cardiovascular-health-outcomes-in-nonathletic-sedentary-and-clinical-populations-a-literature-review
#17
Catherine A Lizamore, Michael J Hamlin
Lizamore, Catherine A., and Michael J. Hamlin. The use of simulated altitude techniques for beneficial cardiovascular health outcomes in nonathletic, sedentary, and clinical populations: A literature review. High Alt Med Biol 00:000-000, 2017. BACKGROUND: The reportedly beneficial improvements in an athlete's physical performance following altitude training may have merit for individuals struggling to meet physical activity guidelines. AIM: To review the effectiveness of simulated altitude training methodologies at improving cardiovascular health in sedentary and clinical cohorts...
August 28, 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/28759538/validity-and-reliability-of-the-hexoskin%C3%A2-wearable-biometric-vest-during-maximal-aerobic-power-testing-in-elite-cyclists
#18
Catherine A Elliot, Michael J Hamlin, Catherine A Lizamore
The purpose of this study was to investigate the validity and reliability of the Hexoskin® vest for measuring respiration and heart rate (HR) in elite cyclists during a progressive test to exhaustion. Ten male elite cyclists (age 28.8 ± 12.5 yr, height 179.3 ± 6.0 cm, weight 73.2 ± 9.1 kg, V˙ O2max 60.7 ± 7.8 ml.kg.min mean ± SD) conducted a maximal aerobic cycle ergometer test using a ramped protocol (starting at 100W with 25W increments each min to failure) during two separate occasions over a 3-4 day period...
July 28, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28737589/validity-of-a-taekwondo-specific-test-to-measure-vo2peak-and-the-heart-rate-deflection-point
#19
Jader Sant'Ana, Emerson Franchini, Juan Murias, Fernando Diefenthaeler
This study investigated whether the progressive specific taekwondo test (PSTT) is a valid test to measure peak oxygen consumption (VO2PEAK) and the heart rate deflection point (HRDP) in taekwondo athletes. Eighteen male black belt athletes (25.3 ± 4.8 years; 8.2 ± 4.7 years of practice; 171.8 ± 4.7 cm; 76.1 ± 8.2 kg, and 13.1 ± 2.9% body fat) involved in regional and national level competitions performed the PSTT and an incremental treadmill test (IT). The following variables were analyzed: VO2PEAK, respiratory quotient, oxygen consumption at the HRDP (VO2HRDP), peak heart rate (HRPEAK), HRDP, and peak post-test blood lactate concentration...
July 19, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28730870/cardiac-autonomic-recovery-after-strength-exercise-in-lower-and-upper-limbs
#20
Naerton José Xavier Isidoro, Milana Drumond Ramos Santana, Vitor E Valenti, David M Garner, Luiz Carlos de Abreu
Introduction Strength exercises influence the cardiovascular system by promoting autonomic adjustments induced by the increased metabolic demand and consequent increase in local blood flow. However, it is unclear whether there are differences between upper and lower limbs. We aimedto evaluate recovery of cardiac autonomic modulation afterstrengthexercise in upper and lower limbs. Methods We analysed 29 healthy male subjects physically active but not professional athletes aged between 20 and 35 years old...
July 21, 2017: Acta Cardiologica
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