Metabolic recovery in professional road cyclists: a 31P-MRS study.

abstract：PURPOSE:To quantify the relationship between total training load and running performance during the most important competitions of the season (national cross-country championships, 4.175- and 10.130-km races). METHODS:Eight well-trained, subelite endurance runners (age (mean+/-SD): 23+/-2 yr; VO2max: 70.0+/-7.3 mL.kg....

journal_title：Medicine and science in sports and exercise

authors： Esteve-Lanao J,San Juan AF,Earnest CP,Foster C,Lucia A

更新日期：2005-03-01 00:00:00

abstract：PURPOSE:Increased serum testosterone (TST) occurs in response to resistance exercise and is associated with increased muscle mass. However, the effects of elevated TST and sequential resistance exercise bouts on androgen receptor (AR) expression in humans are not well known. This study examined three sequential bouts o...

journal_title：Medicine and science in sports and exercise

authors： Willoughby DS,Taylor L

更新日期：2004-09-01 00:00:00

abstract：PURPOSE:Tibial stress fracture is a common overuse running injury that results from the interplay of repetitive mechanical loading and bone strength. This research project aimed to determine whether female runners with a history of tibial stress fracture (TSF) differ in ground reaction force (GRF) parameters during run...

journal_title：Medicine and science in sports and exercise

authors： Bennell K,Crossley K,Jayarajan J,Walton E,Warden S,Kiss ZS,Wrigley T

更新日期：2004-03-01 00:00:00

abstract：PURPOSE:The purpose of this study was to identify electromyographic (EMG) differences in the latent muscle reaction timing (LMRT) of the rotator cuff between trained overhead throwers and control subjects in response to sudden internal rotation perturbation (P < or = 0.05). METHODS:Subjects included 15 trained overhea...

journal_title：Medicine and science in sports and exercise

authors： Brindle TJ,Nyland J,Shapiro R,Caborn DN,Stine R

更新日期：1999-10-01 00:00:00

abstract：PURPOSE:The study purposes were 1) to study the differences between perceived exertion measured by a generic (/10) or an individualized (/max value obtained during the test) score on the OMNI cycle scale (OMNImax and OMNI10) and the actual effort (peak oxygen consumption) at different stages of a maximal cycling test i...

journal_title：Medicine and science in sports and exercise

authors： Lemay V,O'Loughlin J,Tremblay A,Mathieu ME

更新日期：2013-05-01 00:00:00

abstract：PURPOSE:It is unclear how muscle strength in tibial rotation and knee abduction change following anterior cruciate ligament (ACL) injury and reconstruction. Such strength changes are likely, considering the oblique orientation of the ACL and the constraint provided by the ACL at various tibial rotation and adduction po...

journal_title：Medicine and science in sports and exercise

authors： Zhang LQ,Nuber GW,Bowen MK,Koh JL,Butler JP

更新日期：2002-01-01 00:00:00

abstract：PURPOSE:We evaluated the associations between accelerometer-estimated physical activity (PA) intensity and heart rate variability (HRV) and examined mediation of these associations by glycemic control indices and other cardiovascular disease risk factors. METHODS:Data were from 1668 participants (X[Combining Overline]...

journal_title：Medicine and science in sports and exercise

authors： Pope ZC,Gabriel KP,Whitaker KM,Chen LY,Schreiner PJ,Jacobs DR Jr,Sternfeld B,Carr JJ,Lloyd-Jones DM,Pereira MA

更新日期：2020-06-01 00:00:00

abstract：:The two goals of this study were: 1) to establish a stimulation pattern which would drive the gastrocnemius-plantaris muscle of the dog, in situ, to maximal work rate, W, and 2) to determine whether the surgical isolation of the circulation of this muscle, necessary to measure the muscle flow, Q, reduced the muscle's ...

journal_title：Medicine and science in sports and exercise

authors： Stainsby WN,Andrew GM

更新日期：1988-10-01 00:00:00

abstract：UNLABELLED:We previously reported that a mathematical model could accurately predict steady-state road-cycling power when all the model parameters were known. Application of that model to competitive cycling has been limited by the need to obtain accurate parameter values, the non-steady-state nature of many cycling ev...

journal_title：Medicine and science in sports and exercise

authors： Martin JC,Gardner AS,Barras M,Martin DT

更新日期：2006-03-01 00:00:00

abstract：:Although hyponatremia (HN) has been reported among endurance athletes, its etiology often remains uncertain and of great interest to clinicians and physiologists. This case report presents physiologic evidence regarding the etiology and development of HN during exercise in the heat. A 21-yr-old male volunteer (K.G.) u...

journal_title：Medicine and science in sports and exercise

authors： Armstrong LE,Curtis WC,Hubbard RW,Francesconi RP,Moore R,Askew EW

更新日期：1993-05-01 00:00:00

abstract：PURPOSE:This study established the published prediction equations for the energy expenditure of walking and running compared with the measured values. To make this comparison we first determined whether differences exist in energy expenditure for 1600 m of walking versus running, and whether energy expenditure differen...

journal_title：Medicine and science in sports and exercise

authors： Hall C,Figueroa A,Fernhall B,Kanaley JA

更新日期：2004-12-01 00:00:00

abstract：PURPOSE:The study's purpose was to relate body mass index (BMI) to body fat percentage as measured by dual-energy x-ray absorptiometry in female elite athletes from different sports and nonathletic controls and to investigate what characterizes the athletes with unhealthy low and high body fat values. METHODS:This stu...

journal_title：Medicine and science in sports and exercise

authors： Klungland Torstveit M,Sundgot-Borgen J

更新日期：2012-05-01 00:00:00

abstract：UNLABELLED:The cumulative effect of the female athlete triad (Triad) risk factors on the likelihood of low bone mineral density (BMD) in exercising women is unclear. PURPOSE:This study aimed to determine the risk of low BMD in exercising women with multiple Triad risk factors. METHODS:We retrospectively examined cros...

journal_title：Medicine and science in sports and exercise

authors： Gibbs JC,Nattiv A,Barrack MT,Williams NI,Rauh MJ,Nichols JF,De Souza MJ

更新日期：2014-01-01 00:00:00

abstract：:The use of 14C as tracer to measure lactate turnover and oxidation and its role in gluconeogenesis are discussed. Lactate is formed as well as utilized in many cells, and most of it in the body is present within cells so that interpretation of 14C data from labelled lactate is more complex and more difficult than that...

journal_title：Medicine and science in sports and exercise

authors： Katz J

更新日期：1986-06-01 00:00:00

abstract：PURPOSE:Lateral knee osteoarthritis (OA) is common after anterior cruciate ligament reconstruction (ACLR), yet gait characteristics associated with lateral knee OA after ACLR are not well understood. This cross-sectional study aimed to compare knee, trunk, pelvis, hip, and ankle kinematics and moments between people wi...

journal_title：Medicine and science in sports and exercise

authors： Hart HF,Collins NJ,Ackland DC,Cowan SM,Crossley KM

更新日期：2015-11-01 00:00:00

abstract：PURPOSE:To describe the level of usage of protective devices and equipment in a cohort of New Zealand rugby players. METHODS:Male and female players (N = 327) from a range of competitive grades were followed over the course of the season. Participants were interviewed weekly about their participation in rugby and use ...

journal_title：Medicine and science in sports and exercise

authors： Marshall SW,Waller AE,Loomis DP,Feehan M,Chalmers DJ,Bird YN,Quarrie KL

更新日期：2001-12-01 00:00:00

abstract：:The performance of the Caltrac accelerometer was studied in elementary school-age children under field and laboratory conditions. In Study 1, 35 children (20 boys, 15 girls, mean age = 10.8 yr) wore the accelerometer and a heart rate (HR) monitor for 2 d. Caltrac activity counts per hour were compared to the mean "act...

journal_title：Medicine and science in sports and exercise

authors： Sallis JF,Buono MJ,Roby JJ,Carlson D,Nelson JA

更新日期：1990-10-01 00:00:00

abstract：PURPOSE:To determine whether quantitative methods could separate golfers with a possible dystonic cause of the "yips" from those that appear to be nondystonic. METHODS:Twenty-seven golfers completed 10 two-handed and 10 right hand-only putts. Surface EMG assessed forearm muscle co-contraction and motion detectors moni...

journal_title：Medicine and science in sports and exercise

authors： Adler CH,Temkit M,Crews D,McDaniel T,Tucker J,Hentz JG,Marquardt C,Abraham D,Caviness JN

更新日期：2018-11-01 00:00:00

abstract：INTRODUCTION/PURPOSE:Hyperpnea and hyperinflation have been proposed as contributors to exaggerated energy demands in chronic obstructive pulmonary disease (COPD), yet there are incomplete data on exercise requirements. This study compared total-body energy demands of the internal (unloaded) and external work of cyclin...

journal_title：Medicine and science in sports and exercise

authors： Perrault H,Gravel G,Ofir D,Rittmaster D,Aguilaniu B,Bourbeau J

更新日期：2007-06-01 00:00:00

abstract：PURPOSE:To determine the prevalence of full-thickness focal chondral defects in the athlete's knee. METHODS:We conducted a systematic review of multiple databases, evaluating studies of the prevalence of articular cartilage defects in athletes. Because of the heterogeneity of data, a meta-analysis could not be perform...

journal_title：Medicine and science in sports and exercise

authors： Flanigan DC,Harris JD,Trinh TQ,Siston RA,Brophy RH

更新日期：2010-10-01 00:00:00

abstract：PURPOSE:This study aimed to test whether environmental hypoxia could potentiate the effects of exercise training on glucose metabolism and insulin sensitivity. METHODS:Fourteen adolescents with obesity were assigned to 6 wk of exercise training either in normoxic or in hypoxic conditions (FiO2 15%). Adolescents traine...

journal_title：Medicine and science in sports and exercise

authors： DE Groote E,Britto FA,Bullock L,François M,DE Buck C,Nielens H,Deldicque L

更新日期：2018-11-01 00:00:00

abstract：PURPOSE:This study tested the hypothesis that exercise training improves myocardial blood flow and regional myocardial contractile function in a lateral border zone located adjacent to the ischemic zone during coronary artery occlusion. METHODS:Fourteen dogs were subjected to either 12 wk of dynamic exercise training ...

journal_title：Medicine and science in sports and exercise

authors： Brandt MA,Gwirtz PA

更新日期：2001-04-01 00:00:00

abstract：:Nine subjects participated in an exercise program for 40 min/day, 6 days/wk. The training work rates were kept constant for the first 4 wk. The work rates were then increased to a higher level and kept constant for an additional 5 wk. During both training periods, maximum oxygen uptake (VO2max) increased for the first...

journal_title：Medicine and science in sports and exercise

authors： Hickson RC,Hagberg JM,Ehsani AA,Holloszy JO

更新日期：1981-01-01 00:00:00

abstract：PURPOSE:Physical activity guidelines recommend at least 150 min of moderate-intensity physical activity (MPA), 75 min of vigorous-intensity physical activity (VPA), or combination of MPA and VPA. However, few epidemiological studies have examined whether the general population can derive equal health benefits from MPA ...

journal_title：Medicine and science in sports and exercise

authors： Kikuchi H,Inoue S,Lee IM,Odagiri Y,Sawada N,Inoue M,Tsugane S

更新日期：2018-04-01 00:00:00

abstract：PURPOSE:The purpose of this investigation was to determine whether whole body composition could be estimated in tall individuals using summed measures from two partial DXA scans. METHODS:Using a pencil-beam DXA, a convenience sample of young individuals (N = 19) were scanned three times. Two partial scans of the upper...

journal_title：Medicine and science in sports and exercise

authors： Evans EM,Prior BM,Modlesky CM

更新日期：2005-07-01 00:00:00

abstract：PURPOSE:Physical exercise or hypoxic exposure influences hemorheology and acid-base homeostasis. Band 3 protein in erythrocytes modulates cells' rheological properties and anion transport ability. This study investigated how cycling aerobic interval training (AIT) and moderate continuous training (MCT) affect the rheol...

journal_title：Medicine and science in sports and exercise

authors： Chou SL,Huang YC,Fu TC,Hsu CC,Wang JS

更新日期：2016-01-01 00:00:00

abstract：:Existing cross-sectional studies on plasma catecholamine activity provide no support for the concept that a markedly high level of aerobic fitness modifies sympathoadrenal response to an acute psychological challenge in humans. In contrast, compromised sympathetic nervous system activity has been observed in individua...

journal_title：Medicine and science in sports and exercise

authors： Sothmann MS,Hart BA,Horn TS

更新日期：1991-07-01 00:00:00

abstract：:The effects of the potent opioid, sufentanil, were studied in 11 athletes. Sufentanil was administered intravenously (up to 0.5 microgram.kg-1 over 10 min) to the subjects while they ran at 14 km.hr-1 on a level treadmill. Prior to, and after, the drug infusion, the treadmill was inclined by 6% for 4 min and CO2 was i...

journal_title：Medicine and science in sports and exercise

authors： Ward DS,Nitti GJ

更新日期：1988-12-01 00:00:00

abstract：PURPOSE:To study the effect of genetic factors, birth weight, early childhood growth, sport, hours of training, and pubertal status on the stature and body mass index (BMI) of children aged 9-13 participating in sports at a competitive level. METHODS:A total of 184 children (96 girls, 88 boys), competing in swimming, ...

journal_title：Medicine and science in sports and exercise

authors： Damsgaard R,Bencke J,Matthiesen G,Petersen JH,Müller J

更新日期：2000-10-01 00:00:00

abstract：PURPOSE:Carnosine is a dipeptide composed of β-alanine and L-histidine and is present in skeletal muscle. Chronic oral β-alanine supplementation can induce muscle carnosine loading and is therefore seen as the rate-limiting factor for carnosine synthesis. However, the effect of L-histidine supplementation on carnosine ...

journal_title：Medicine and science in sports and exercise

authors： Blancquaert L,Everaert I,Missinne M,Baguet A,Stegen S,Volkaert A,Petrovic M,Vervaet C,Achten E,DE Maeyer M,DE Henauw S,Derave W

更新日期：2017-03-01 00:00:00