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https://www.readbyqxmd.com/read/29222074/changes-of-oxygen-consumption-and-heart-rate-after-acute-myocardial-infarction-during-6-month-follow-up
#1
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/29219220/heart-rate-recovery-fast-to-slow-phase-transition-influence-of-physical-fitness-and-exercise-intensity
#2
Rhenan Bartels, Eliza Prodel, Mateus C Laterza, Jorge Roberto P de Lima, Tiago Peçanha
BACKGROUND: Postexercise heart rate (HR) recovery presents an exponential decay, with two distinct phases: a fast phase, characterized by abrupt decay of HR, and determined by parasympathetic reactivation; and a slow phase, characterized by gradual decay of HR, and predominantly determined by sympathetic withdrawal. Although several methods have been proposed to assess postexercise HR recovery, none of those methods selectively assesses the time of transition from the fast to the slow phase of the HR recovery curve (HRRPT ), and the magnitude of decay prior to (HRRFP ) and after this point (HRRSP )...
December 8, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/29218018/aerobic-interval-training-and-cardiometabolic-health-in-patients-with-type-2-diabetes-a-meta-analysis
#3
Shanhu Qiu, Xue Cai, Zilin Sun, Martina Zügel, Jürgen M Steinacker, Uwe Schumann
Vigorous to maximal aerobic interval training (INT) has received remarkable interest in improving cardiometabolic outcomes for type 2 diabetes patients recently, yet with inconsistent findings. This meta-analysis was aimed to quantify its effectiveness in type 2 diabetes. Randomized controlled trials (RCTs) were identified by searches of 3 databases to October 2017, which evaluated the effects of INT with a minimal training duration of 8 weeks vs. moderate-intensity continuous training (MICT) or non-exercise training (NET) among type 2 diabetes patients on outcomes including cardiorespiratory fitness, glycemic control, body composition, blood pressure, and lipid profiles...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29216289/effects-of-load-carriage-on-physiological-determinants-in-adventure-racers
#4
Alex de O Fagundes, Elren P Monteiro, Leandro T Franzoni, Bruna S Fraga, Patrícia D Pantoja, Gabriela Fischer, Leonardo A Peyré-Tartaruga
Adventure racing athletes need run carrying loads during the race. A better understanding of how different loads influence physiological determinants in adventure racers could provide useful insights to gauge training interventions to improve running performance. We compare the maximum oxygen uptake (VO2max), the cost of transport (C) and ventilatory thresholds of twelve adventure running athletes at three load conditions: unloaded, 7 and 15% of body mass. Twelve healthy men experienced athletes of Adventure Racing (age 31...
2017: PloS One
https://www.readbyqxmd.com/read/29214920/caffeine-effects-on-vo2max-test-outcomes-investigated-by-a-placebo-perceived-as-caffeine-design
#5
Cayque Brietzke, Ricardo Yukio Asano, Felipe De Russi de Lima, Fabiano Aparecido Pinheiro, Franco-Alvarenga, Carlos Ugrinowitsch, Flávio Oliveira Pires
BACKGROUND: Ergogenic effects of caffeine (CAF) ingestion have been observed in different cycling exercise modes, and have been associated with alterations in ratings of perceived exertion (RPE). However, there has been little investigation of maximal oxygen uptake (VO2MAX) test outcomes. AIM: This study aimed to verify whether CAF may reduce RPE, thereby improving maximal incremental test (MIT) outcomes such as VO2MAX, time to exhaustion and peak power output (WPEAK)...
December 2017: Nutrition and Health
https://www.readbyqxmd.com/read/29203287/effects-of-endurance-training-on-serum-lipids
#6
REVIEW
Kati Fikenzer, Sven Fikenzer, Ulrich Laufs, Christian Werner
BACKGROUND AND AIMS: Physical activity is recommended as part of the lifestyle modification for the treatment of hyperlipidemia, however, the literature reports heterogeneous quantitative effects of exercise on serum lipids. We therefore reviewed the effects of aerobic exercise on serum lipids with special focus on the training effectiveness. METHODS: Data regarding effects of endurance training (ET) on total Cholesterol (TC), LDL-Cholesterol (LDL-C), HDL-Cholesterol (HDL-C) and triglycerides (TG) were evaluated in a selective literature search...
December 1, 2017: Vascular Pharmacology
https://www.readbyqxmd.com/read/29201290/ergospirometry-with-concurrent-fibre-optic-laryngoscopy-a-randomised-crossover-study
#7
Kiran Kafila Mirza, Emil Schwarz Walsted, Vibeke Backer
Background: Patients suffering from exercise-induced laryngeal obstruction (EILO) are subjected to several exhausting tests. We aimed to assess the feasibility of using a single test to obtain diagnostic measurements for maximum oxygen uptake (VO2max) and exercise-induced laryngeal obstruction (EILO). Methods: Patients referred to the outpatient respiratory clinic at the University Hospital of Bispebjerg, Copenhagen with exercise-induced dyspnoea were evaluated for inclusion over 13 months. Eligible patients were aged 18-43 years, had a known EILO diagnosis (moderate or severe) and were inactive (self-reported activity) with less than 3 hours activity per week...
2017: European Clinical Respiratory Journal
https://www.readbyqxmd.com/read/29199900/a-prescribed-walking-regimen-plus-arginine-supplementation-improves-function-and-quality-of-life-for-patients-with-pulmonary-arterial-hypertension-a-pilot-study
#8
Mary Beth Brown, Attie Kempf, Catherine M Collins, Gary M Long, Matthew Owens, Shikha Gupta, Yaron Hellman, Vincent Wong, Mark Farber, Tim Lahm
Current evidence suggests that exercise training is beneficial in pulmonary arterial hypertension (PAH). Unfortunately, the standard supervised, hospital-based programs limit patient accessibility to this important intervention. Our proof-of-concept study aimed to provide insight into the usefulness of a prescribed walking regimen along with arginine supplementation to improve outcomes for patients with PAH. Twelve PAH patients (all women) in New York Heart Association (NYHA) functional class (FC) II (n = 7) or III (n = 5) and in stable condition for ≥ 3 months were enrolled...
January 2018: Pulmonary Circulation
https://www.readbyqxmd.com/read/29199782/anthropometric-and-physiological-characteristics-of-male-soccer-players-according-to-their-competitive-level-playing-position-and-age-group-a-systematic-review
#9
Maamer Slimani, Pantelis T Nikolaidis
BACKGROUND: The aim of the present systematic review was to profile soccer players' anthropometric, physiological, and physical attributes relative to different competitive levels, playing positions and age groups. METHODS: The systematic search was conducted using different databases and according to the Population/Intervention or Exposure/Comparison/Outcome(s) [PICO] criteria. RESULTS: The present review shows that the somatotype characteristics, percentage (%) of body fat, maximal oxygen uptake (VO2max), repeatedsprint ability (RSA), running speed, strength, and muscular power of the lower limbs were the most powerful discriminators between male soccer players of different competitive levels, playing positions, and age groups...
December 1, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29197203/positive-impact-of-prescribed-physical-activity-on-symptoms-of-schizophrenia-randomized-clinical-trial
#10
Dorde Curcic, Tamara Stojmenovic, Slavica Djukic-Dejanovic, Nenad Dikic, Milica Vesic-Vukasinovic, Nenad Radivojevic, Marija Andjelkovic, Milica Borovcanin, Gorica Djokic
BACKGROUND: The purpose of this study was to examine functional capacity of cardio-respiratory system in patients with schizophrenia, and to evaluate the effects of 12 weeks prescribed physical activity on aerobic capacity and symptoms of schizophrenia. SUBJECTS AND METHODS: Study involved 80 hospitalized patients with any of the subtypes of schizophrenia (42 men, 38 women). They were divided into two groups: exercise and control group, both with 40 patients. Maximal aerobic capacity (VO2 max) as an indicator of cardiovascular fitness has been obtained by cardiopulmonary stress test on a treadmill...
December 2017: Psychiatria Danubina
https://www.readbyqxmd.com/read/29191981/impact-of-training-state-on-fasting-induced-regulation-of-adipose-tissue-metabolism-in-humans
#11
Lærke Bertholdt, Anders Gudiksen, Tomasz Stankiewicz, Ida Villesen, Jonas Tybirk, Gerrit van Hall, Jens Bangsbo, Peter Plomgaard, Henriette Pilegaard
Recruitment of fatty acids from adipose tissue is essential during fasting. However, the molecular mechanisms behind fasting-induced metabolic regulation in human adipose tissue and the potential impact of training state in this are unknown. Therefore, the aim of the present study was to investigate 1) fasting-induced regulation of lipolysis and glyceroneogenesis in human adipose tissue as well as 2) the impact of training state on basal oxidative capacity and fasting-induced metabolic regulation in human adipose tissue...
November 30, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/29190852/exercise-prescription-using-the-borg-rating-of-perceived-exertion-to-improve-fitness
#12
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/29189854/-effects-of-a-high-intensity-interval-training-on-the-aerobic-capacity-of-adolescents
#13
Álvaro Huerta Ojeda, Sergio Galdames Maliqueo, Marianela Cataldo Guerra, Guillermo Barahona Fuentes, Tania Rozas Villanueva, Pablo Cáceres Serrano
BACKGROUND: If aerobic capacity is stimulated early in life, maximal oxygen consumption during adulthood is assured. AIM: To analyze the effects of a high intensity interval training (HIIT) in adolescents on the maximal oxygen consumption (VO2max) measured using the 20-m shuttle run test (20mSRT). MATERIAL AND METHODS: Twenty eight teenagers aged 13 ± 0.6 years were divided in two groups of 14 subjects each. One group was to a 16 sessions of HIIT interval training based on their individual maximal aerobic speed and the other continued with their usual exercise done at school...
August 2017: Revista Médica de Chile
https://www.readbyqxmd.com/read/29189586/potential-utility-of-a-loaded-treadmill-protocol-for-tactical-athletes
#14
James T Swearingen, Lawrence W Weiss, Webb A Smith, Mark D Stephenson, Brian K Schilling
Aerobic capacity is an important variable for tactical athletes, with VO2max being the most direct way of estimating it in a laboratory setting. A mode-specific protocol involving fixed-weight, torso-borne loads was assessed in the current study. On four separate days, 15 men (Age 22.1 ± 2.7 years, mass 85.1 ± 10.6kg, height 179.0 ± 7.7cm) performed a weighted treadmill walking protocol (two trials) and a non-weighted treadmill running protocol (two trials). Both the weighted and non-weighted protocols were reliable, with ICC values of ...
November 16, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29189583/modeling-fitness-variable-responses-to-training-in-prepubescent-children
#15
Ana R Alves, Carlos Marta, Henrique P Neiva, Célia Nunes, Mikel Izquierdo, Mário C Marques
The aim of this study was to determine strength and oxygen uptake (VO2max) performances according to different training program intervention design with 8-weeks duration in prepubescent children through a multiple linear regression models. Two hundred and forty-five healthy prepubescent children (aged 10.9 ± 0.5 years) were randomly assigned to a specific training program (strength training only - S; aerobic training only - A; intra-session aerobic and strength training - AS; intra-session strength and aerobic training - SA; or concurrent training performed in different sessions - CT) or a control group (no training regimen - C)...
November 16, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29178684/a-supervised-exercise-intervention-for-youth-at-risk-for-psychosis-an-open-label-pilot-study
#16
Derek J Dean, Angela D Bryan, Raeana Newberry, Tina Gupta, Emily Carol, Vijay A Mittal
OBJECTIVE: A rapidly accumulating body of research suggests that exercise can improve symptoms and well-being in patients suffering from psychosis. Exercise may also promote neurogenesis in the hippocampus, a structure that plays an important role in the pathophysiology of psychosis. To date, there has not been an intervention focused on exercise prior to the onset of psychosis, a critical time for prevention of more serious illness. METHODS: In this pilot study, 12 young adults at ultrahigh risk (UHR) for psychosis were enrolled in a 12-week open-label exercise intervention...
November 21, 2017: Journal of Clinical Psychiatry
https://www.readbyqxmd.com/read/29177050/effect-of-regular-exercise-training-on-changes-in-hba1c-bmi-and-vo2max-among-patients-with-type-2-diabetes-mellitus-an-8-year-trial
#17
Farzad Najafipour, Majid Mobasseri, Abbas Yavari, Haidar Nadrian, Akbar Aliasgarzadeh, Naimeh Mashinchi Abbasi, Mitra Niafar, Jalil Houshyar Gharamaleki, Vahideh Sadra
Objective: The effects of regular exercise on the health promotion of patients with type 2 diabetes mellitus (T2DM) have been well documented. The present study investigated the long-term effects of regular exercise training on biological indicators among these patients. Methods: In this quasi-experimental trial with pretest-post-test design, 65 patients with T2DM aged 33-69 years (experiment (35), control (30)) participated. After 8 years of conducting the program, the data on 30 patients (experiment (15), control (15)) were entered into analysis...
2017: BMJ Open Diabetes Research & Care
https://www.readbyqxmd.com/read/29173470/effect-of-long-term-aerobic-anaerobic-and-aerobic-anaerobic-physical-training-in-seric-toxic-minerals-concentrations
#18
Marcos Maynar-Mariño, Francisco Llerena, Ignacio Bartolomé, Carmen Crespo, Diego Muñoz, María-Concepción Robles, María-Jesús Caballero
BACKGROUND: Many substances poured out from industries can be toxic to humans and can impair physical performance. Besides, physical training may modify the body concentrations of these substances as a result of physiological adaptations. OBJECTIVES: The aim of the study was to determine if different modalities of exercise might affect serum concentrations of toxic trace elements in sportsmen. METHODS: 80 Spanish national sportsmen were recruited before the start of their training period...
January 2018: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/29171773/fitness-attenuates-the-prevalence-of-increased-coronary-artery-calcium-in-individuals-with-metabolic-syndrome
#19
Elin Ekblom-Bak, Örjan Ekblom, Erika Fagman, Oskar Angerås, Caroline Schmidt, Annika Rosengren, Mats Börjesson, Göran Bergström
Background The association between cardiorespiratory fitness, physical activity and coronary artery calcium (CAC) is unclear, and whether higher levels of fitness attenuate CAC prevalence in subjects with metabolic syndrome is not fully elucidated. The present study aims to: a) investigate the independent association of fitness on the prevalence of CAC, after adjustment for moderate-to-vigorous physical activity and sedentary time, and b) study the possible attenuation of increased CAC by higher fitness, in participants with metabolic syndrome...
January 1, 2017: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/29170705/energy-cost-of-active-and-sedentary-music-video-games-drum-and-handheld-gaming-vs-walking-and-sitting
#20
Edwin Miranda, Brittany S Overstreet, William A Fountain, Vincent Gutierrez, Michael Kolankowski, Matthew L Overstreet, Ryan M Sapp, Christopher A Wolff, Scott A Mazzetti
To compare energy expenditure during and after active and handheld video game drumming compared to walking and sitting. Ten experienced, college-aged men performed four protocols (one per week): no-exercise seated control (CTRL), virtual drumming on a handheld gaming device (HANDHELD), active drumming on drum pads (DRUM), and walking on a treadmill at ~30% of VO2max (WALK). Protocols were performed after an overnight fast, and expired air was collected continuously during (30min) and after (30min) exercise...
2017: International Journal of Exercise Science
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