Validation of noninvasive maximal cardiac output measurement.

abstract：INTRODUCTION:Different therapies can improve clinical and motor symptoms of multiple sclerosis (MS) similarly, but studies comparing the effects of different exercise therapies on clinical and motor outcomes are scant. We compared the effects of exergaming (EXE), balance (BAL), cycling (CYC), proprioceptive neuromuscul...

journal_title：Medicine and science in sports and exercise

authors： Tollár J,Nagy F,Tóth BE,Török K,Szita K,Csutorás B,Moizs M,Hortobágyi T

更新日期：2020-05-01 00:00:00

abstract：INTRODUCTION:Chronic unimanual motor practice increases the motor output not only in the trained but also in the nonexercised homologous muscle in the opposite limb. We examined the hypothesis that adaptations in motor cortical excitability of the nontrained primary motor cortex (iM1) and in interhemispheric inhibition...

journal_title：Medicine and science in sports and exercise

authors： Hortobágyi T,Richardson SP,Lomarev M,Shamim E,Meunier S,Russman H,Dang N,Hallett M

更新日期：2011-07-01 00:00:00

abstract：:Vertical loading rates are typically found to be lower in forefoot compared to rearfoot strikers, promoting the idea that forefoot striking is desirable and may reduce running injury risk. However, prior work using linear models has shown that foot inclination angle (FIA) at initial contact is a poor predictor of vert...

journal_title：Medicine and science in sports and exercise

authors： Stiffler-Joachim MR,Wille CM,Kliethermes SA,Johnston W,Heiderscheit BC

更新日期：2019-10-01 00:00:00

abstract：:Equations are often used to predict cardiorespiratory fitness (CRF) from submaximal or maximal exercise tests. However, no study has comprehensively compared these exercise-based equations with directly measured CRF using data from a single, large cohort. PURPOSE:This study aimed to compare the accuracy of exercise-b...

journal_title：Medicine and science in sports and exercise

authors： Peterman JE,Harber MP,Imboden MT,Whaley MH,Fleenor BS,Myers J,Arena R,Kaminsky LA

更新日期：2021-01-01 00:00:00

abstract：:The individual anaerobic threshold (IAT) is the highest metabolic rate at which blood lactate (LA) concentrations are maintained at a steady state during prolonged exercise. The purpose of this study was to compare the effects of active and passive recovery on the determination of the IAT before and after an endurance...

journal_title：Medicine and science in sports and exercise

authors： McLellan TM,Jacobs I

更新日期：1989-10-01 00:00:00

abstract：INTRODUCTION:We examined the relationships between insulin-like growth factor I (IGF-I), its binding protein (IGFBP-3), body composition, and bone mineral density (BMD) in collegiate runners (N = 13), gymnasts (N = 10), and noncompetitive women (N = 10). METHODS:Subjects were evaluated by dual-energy x-ray absorptiome...

journal_title：Medicine and science in sports and exercise

authors： Snow CM,Rosen CJ,Robinson TL

更新日期：2000-11-01 00:00:00

abstract：:The effects of endurance training on aerobic power, and the relationship between aerobic power and running performance were investigated in 11 junior runners over a period of 5-to-7 years, starting from the age of 14. Aerobic power was measured using treadmill running and a protocol that involved increasing speed. The...

journal_title：Medicine and science in sports and exercise

authors： Murase Y,Kobayashi K,Kamei S,Matsui H

更新日期：1981-01-01 00:00:00

abstract：UNLABELLED:Accurate assessments of both physical activity and sedentary behaviors are crucial to understand the health consequences of movement patterns and to track changes over time and in response to interventions. PURPOSE:The study evaluates the validity of an integrative, machine learning method for processing ac...

journal_title：Medicine and science in sports and exercise

authors： Ellingson LD,Schwabacher IJ,Kim Y,Welk GJ,Cook DB

更新日期：2016-08-01 00:00:00

abstract：PURPOSE:Evasive sidestepping during sports commonly results in noncontact anterior cruciate ligament injuries. Sidestepping in response to different simple visual stimuli has been studied previously but never investigated using quasi-game-realistic visual conditions. We compared the biomechanics of high-level and low-l...

journal_title：Medicine and science in sports and exercise

authors： Lee MJ,Lloyd DG,Lay BS,Bourke PD,Alderson JA

更新日期：2013-09-01 00:00:00

abstract：:The purpose of this project was to determine whether mild heat stress induced by wearing a wet suit while swimming in relatively warm water (25.4 +/- 0.1 degrees C) increases the risk of heat injury during the cycling and running stages of an International distance triathlon in a hot and humid environment (32 degrees ...

journal_title：Medicine and science in sports and exercise

authors： Kerr CG,Trappe TA,Starling RD,Trappe SW

更新日期：1998-01-01 00:00:00

abstract：PURPOSE:The purpose of this study was to investigate the effect of acute ingestion of modafinil (M) on time to exhaustion during high-intensity exercise. Modafinil (M) is a psychostimulant developed to treat narcolepsy, with "arousal" properties attributed to an increased release of dopamine in the CNS. Because other s...

journal_title：Medicine and science in sports and exercise

authors： Jacobs I,Bell DG

更新日期：2004-06-01 00:00:00

abstract：PURPOSE:Obesity is epidemic in Western societies, with rapid rates of increase in the young. Various methods exist for the assessment of body composition, but these have not been compared in obese children and adolescents. This study compared methods of body composition assessment in obese young people to determine whe...

journal_title：Medicine and science in sports and exercise

authors： Watts K,Naylor LH,Davis EA,Jones TW,Beeson B,Bettenay F,Siafarikas A,Bell L,Ackland T,Green DJ

更新日期：2006-03-01 00:00:00

abstract：PURPOSE:The purpose of the present study was to examine the effect of muscle activity level on serum creatine kinase (CK) activity after high-force eccentric exercise of the elbow flexors. METHODS:Twenty-six male volunteers were randomly assigned to one of three groups for a 4-d treatment period after exercise: immobi...

journal_title：Medicine and science in sports and exercise

authors： Sayers SP,Clarkson PM,Lee J

更新日期：2000-09-01 00:00:00

abstract：PURPOSE:This article reports on the findings and recommendations of the "Physiology of Sedentary Behavior and Its Relationship to Health Outcomes" group, a part of a larger workshop entitled Sedentary Behavior: Identifying Research Priorities sponsored by the National Heart, Lung, and Blood Institute and by the Nationa...

journal_title：Medicine and science in sports and exercise

authors： Thyfault JP,Du M,Kraus WE,Levine JA,Booth FW

更新日期：2015-06-01 00:00:00

abstract：:The association between increasing age and decreasing vagal modulation is well known. However, the importance of fitness as a determinant of the decline in vagal modulation with age is not established. To test the hypothesis that decreasing vagal modulation is largely a function of declining fitness rather than increa...

journal_title：Medicine and science in sports and exercise

authors： Goldsmith RL,Bigger JT Jr,Bloomfield DM,Steinman RC

更新日期：1997-06-01 00:00:00

abstract：PURPOSE:To evaluate the effects of a 12-wk period of aquatic training and subsequent detraining on health-related quality of life (HRQOL) and physical fitness in females with fibromyalgia. METHODS:Thirty-four females with fibromyalgia were randomly assigned into two groups: an exercise group, who exercised for 60 min ...

journal_title：Medicine and science in sports and exercise

authors： Tomas-Carus P,Häkkinen A,Gusi N,Leal A,Häkkinen K,Ortega-Alonso A

更新日期：2007-07-01 00:00:00

abstract：PURPOSE:To measure the influence of vitamin E ingestion on oxidative stress and immune changes in response to the Triathlon World Championship in Kona, Hawaii. METHODS:Thirty-eight triathletes received vitamin E (VitE) (800 IU x d(-1) alpha-tocopherol) or placebo (Pla) capsules in randomized, double-blind fashion for ...

journal_title：Medicine and science in sports and exercise

authors： Nieman DC,Henson DA,McAnulty SR,McAnulty LS,Morrow JD,Ahmed A,Heward CB

更新日期：2004-08-01 00:00:00

abstract：INTRODUCTION:Dementia caregivers have an increased risk of cardiovascular disease, and it is possible that metabolic disturbances contribute to this risk. Regular physical exercise reduces cardiometabolic risk, but caregivers may have less opportunity to engage in such activity. We hypothesized that regular physical ac...

journal_title：Medicine and science in sports and exercise

authors： von Känel R,Mausbach BT,Dimsdale JE,Mills PJ,Patterson TL,Ancoli-Israel S,Ziegler MG,Roepke SK,Harmell AL,Allison M,Grant I

更新日期：2011-01-01 00:00:00

abstract：PURPOSE:Deceptive manipulations of performance intensity have previously been investigated in cycling time trials (TT) but used different magnitudes, methods, and task durations. This study examines previously used magnitudes of deception during 16.1-km TT and explores yet unexamined psychological responses. METHODS:T...

journal_title：Medicine and science in sports and exercise

authors： Williams EL,Jones HS,Sparks SA,Midgley AW,Marchant DC,Bridge CA,McNaughton LR

更新日期：2015-11-01 00:00:00

abstract：PURPOSE:To optimize endurance cycling performance, it is important to maximize efficiency. Power-measuring cranks and force-sensing pedals can be used to determine the mechanical effectiveness of cycling. From both a coaching and basic science perspective, it is of interest if a mechanically effective pedaling techniqu...

journal_title：Medicine and science in sports and exercise

authors： Korff T,Romer LM,Mayhew I,Martin JC

更新日期：2007-06-01 00:00:00

abstract：PURPOSE:This study aimed to examine the effects of footwear and neuromuscular fatigue induced by short distance trail running (TR) on running economy (RE) and biomechanics in well-trained and traditionally shod runners. METHODS:RE, vertical and leg stiffness (Kvert and Kleg), as well as foot strike angle were measured...

journal_title：Medicine and science in sports and exercise

authors： Vercruyssen F,Tartaruga M,Horvais N,Brisswalter J

更新日期：2016-10-01 00:00:00

abstract：:Cyclic AMP increases in liver during exercise, the magnitude of the increase being dependent on duration and intensity of the exercise. Within limits, the increase in cAMP is closely correlated with the rate of glycogenolysis and with the exercise intensity. It is unlikely that epinephrine is involved in determining c...

journal_title：Medicine and science in sports and exercise

authors： Winder WW

更新日期：1988-12-01 00:00:00

abstract：PURPOSE:To examine relationships between selected sociodemographic, health-related and environmental factors and levels of physical activity in older adults across three age groups. METHODS:Seven hundred sixty-four older adults (mean age = 77.4 +/- 8.6 yr) from a midsize Canadian city completed a self-administered que...

journal_title：Medicine and science in sports and exercise

authors： Chad KE,Reeder BA,Harrison EL,Ashworth NL,Sheppard SM,Schultz SL,Bruner BG,Fisher KL,Lawson JA

更新日期：2005-10-01 00:00:00

abstract：PURPOSE:The purpose of this study was to examine the relative association of physical activity, cardiorespiratory fitness (CRF), and adiposity with C-reactive protein (CRP) in prepubescent children. METHODS:Forty-five prepubescent children (age = 9.4 ± 1.6 yr; 26 boys) were assessed for adiposity (percent fat) via dua...

journal_title：Medicine and science in sports and exercise

authors： Parrett AL,Valentine RJ,Arngrímsson SA,Castelli DM,Evans EM

更新日期：2010-11-01 00:00:00

abstract：PURPOSE:To test for relationships between objectively measured habitual physical activity and fundamental movement skills in a relatively large and representative sample of preschool children. METHODS:Physical activity was measured over 6 d using the Computer Science and Applications (CSA) accelerometer in 394 boys an...

journal_title：Medicine and science in sports and exercise

authors： Fisher A,Reilly JJ,Kelly LA,Montgomery C,Williamson A,Paton JY,Grant S

更新日期：2005-04-01 00:00:00

abstract：PURPOSE:This study aimed to examine the effect of altering osmolality or adding sodium alginate and pectin to a concentrated carbohydrate (CHO) beverage on gastric-emptying (GE) rate. METHODS:Boluses (500 mL) of three drinks were instilled double blind in eight healthy men while seated, GE was measured using the doubl...

journal_title：Medicine and science in sports and exercise

authors： Sutehall S,Galloway SDR,Bosch A,Pitsiladis Y

更新日期：2020-08-01 00:00:00

abstract：INTRODUCTION/PURPOSE:Critical power (CP) is a fundamental parameter defining high-intensity exercise tolerance; however, its physiological determinants are incompletely understood. The present study determined the impact of hyperoxia on CP, the time constant of phase II pulmonary oxygen uptake kinetics (τV˙O2), and mus...

journal_title：Medicine and science in sports and exercise

authors： Goulding RP,Roche DM,Marwood S

更新日期：2020-05-01 00:00:00

abstract：:Body composition has become a major field of interest for many exercise and sport scientists as well as clinicians who specialize in the prevention of and rehabilitation from hypokinetic diseases. This paper discusses the state of the art within selected areas of body composition, identifying significant areas of cont...

journal_title：Medicine and science in sports and exercise

authors： Wilmore JH

更新日期：1983-01-01 00:00:00

abstract：PURPOSE:The aim of this study was to determine whether highly active antiretroviral therapy (HAART), rather than the direct effect of HIV infection, limits peripheral muscle oxygen extraction-utilization (a-vO(2)) in individuals infected with the human immunodeficiency virus (HIV). METHODS:Fifteen subjects (6 female a...

journal_title：Medicine and science in sports and exercise

authors： Cade WT,Fantry LE,Nabar SR,Shaw DK,Keyser RE

更新日期：2003-07-01 00:00:00

abstract：:The effects of weight loss (dehydration) techniques (which mimicked techniques used prior to actual competition) used by intercollegiate wrestlers on selected physiological parameters (strength, anaerobic power, anaerobic capacity, the lactate threshold (LT), and peak aerobic power) were examined in seven intercollegi...

journal_title：Medicine and science in sports and exercise

authors： Webster S,Rutt R,Weltman A

更新日期：1990-04-01 00:00:00