abstract：:Physical exercise is associated with increases of serum and salivary levels of cortisol. The concomitant increase in serum lactate has been implicated as one of the mechanisms responsible for adrenocortical activation. We evaluated the responses of serum lactate and serum and salivary cortisol to an acute bout of high...

journal_title：International journal of sports medicine

authors： Paccotti P,Minetto M,Terzolo M,Ventura M,Ganzit GP,Borrione P,Termine A,Angeli A

更新日期：2005-11-01 00:00:00

abstract：:The normal circadian rhythm in exercise performance may be altered by the habitual timing of training. We have investigated if morning time trial performance is affected by the time at which moderate exercise is performed on the previous day. Eight male cyclists undertook two separate exercise sessions of sub-maximal ...

journal_title：International journal of sports medicine

authors： Edwards BJ,Edwards W,Waterhouse J,Atkinson G,Reilly T

更新日期：2005-10-01 00:00:00

abstract：:The determination of anaerobic capacity (AC) using treadmill ergometry is problematic from a methodological, as well as a technical standpoint. In this study, a procedure from Monod and Scherrer was modified to examine whether realistic magnitudes of AC could be determined using three subject groups with different lev...

journal_title：International journal of sports medicine

authors： Striegel H,Emde F,Ploog N,Roecker K,Horstmann T,Dickhuth HH

更新日期：2005-09-01 00:00:00

abstract：:The diving response elicited by breath-holding (BH) and immersion mainly consists of bradycardia, decreased cardiac output, and peripheral vasoconstriction. These responses reduce oxygen consumption and thereby prolong the duration of the dive. They may also lead to cardiac arrhythmias or hypoxia, however, which in tu...

journal_title：International journal of sports medicine

authors： Lemaître F,Bernier F,Petit I,Renard N,Gardette B,Joulia F

更新日期：2005-07-01 00:00:00

abstract：:The purpose of this study was to analyse the effects of an exhaustive exercise on arm coordination and intracyclic velocity variations (IVV) to better understand the ways in which they are modified under fatigue conditions. Seventeen competitive swimmers performed a 200-m all-out test and a set of two 25-m (before and...

journal_title：International journal of sports medicine

authors： Alberty M,Sidney M,Huot-Marchand F,Hespel JM,Pelayo P

更新日期：2005-07-01 00:00:00

abstract：:The purpose of this study was to determine whether preferred pedal rate (PPR) could be used as an index of cycling performance. Thirteen competitive cyclists cycled at PPR during a graded test and a supra-threshold constant power test (CPT). The results showed that PPR values reported in CPT were correlated to both pe...

journal_title：International journal of sports medicine

authors： Nesi X,Bosquet L,Pelayo P

更新日期：2005-06-01 00:00:00

abstract：:We tested the hypothesis that time course of O (2) uptake (VO (2)) measured during a supramaximal exercise performed in the field is driven to maximal oxygen uptake (VO (2max)). On an outdoor track, five middle-distance male runners first performed a test to determine VO (2max) and a supramaximal 800-m running test at...

journal_title：International journal of sports medicine

authors： Thomas C,Hanon C,Perrey S,Le Chevalier JM,Couturier A,Vandewalle H

更新日期：2005-05-01 00:00:00

abstract：:Aortic elastic properties are important determinants of left ventricular function. The aim of this study was to determine left ventricular diastolic function and aortic distensibility in endurance athletes. Thirty male runners and thirty age-matched healthy male controls took part in the study. All subjects underwent ...

journal_title：International journal of sports medicine

authors： Kasikcioglu E,Kayserilioglu A,Oflaz H,Akhan H

更新日期：2005-04-01 00:00:00

abstract：:Since the introduction of blood analysis performed before major cycling events in 1997, there have been discussions concerning the quality of the results. The aim of our study therefore was to measure blood samples and compare the results obtained on the field with those obtained in the laboratory. For this it was nec...

journal_title：International journal of sports medicine

authors： Robinson N,Schattenberg L,Zorzoli M,Mangin P,Saugy M

更新日期：2005-04-01 00:00:00

abstract：:The aim of this study was to examine the relationship between anthropometry, physical capacity, and sprint swimming performance in swimmers of both genders aged 12 - 14 years old. Anthropometric characteristics (body height and mass, total upper extremity, hand and foot lengths, chest circumference, certain body bread...

journal_title：International journal of sports medicine

authors： Geladas ND,Nassis GP,Pavlicevic S

更新日期：2005-03-01 00:00:00

abstract：:The purpose of the study was to investigate whether severe fatigue, possibly leading to overreaching, could be diagnosed at an early stage by a combination of parameters. Seven well-trained male subjects (age [mean +/- SD]: 25.3 +/- 4.7 yr; body mass: 76 +/- 6.6 kg; VO2max: 61.1 +/- 7 ml.kg(-1).min(-1)) increased thei...

journal_title：International journal of sports medicine

authors： Rietjens GJ,Kuipers H,Adam JJ,Saris WH,van Breda E,van Hamont D,Keizer HA

更新日期：2005-01-01 00:00:00

abstract：:Vigorous and prolonged physical exercise and mechanical involvement of the perineal region might influence prostatic function and measurement of both total (PSA) and free prostate specific antigen (fPSA), decreasing the diagnostic efficiency of the laboratory screening for either benign or neoplastic prostate disorder...

journal_title：International journal of sports medicine

authors： Lippi G,Corgnati A,Salvagno G,Schena F,Franchini M,Guidi G

更新日期：2005-01-01 00:00:00

abstract：:Muscle contusions represent a major part of sports injuries. The suggested treatments are generally sufficient to support muscle healing, but require a relatively long period of time. Given that autologous blood products are safe treatments, we have used a technique which stimulates the release of certain growth facto...

journal_title：International journal of sports medicine

authors： Wright-Carpenter T,Opolon P,Appell HJ,Meijer H,Wehling P,Mir LM

更新日期：2004-11-01 00:00:00

abstract：:The authors present dermatological signs in: a) rhythmic gymnastics athletes, b) male artistic gymnastics athletes, compared to a control group of fitness athletes. Athletes from the artistic gymnastics group were observed twice. The signs they showed on their first examination (20 days previous to the competition) we...

journal_title：International journal of sports medicine

authors： Biolcati G,Berlutti G,Bagarone A,Caselli G

更新日期：2004-11-01 00:00:00

abstract：:The effects of anabolic agents and training on skeletal muscle are believed to be mediated by a variety of growth and transcription factors. Among these regulatory proteins, insulin-like growth factor-I (IGF-I) and androgen receptor (AR) play a crucial role. The purpose of this study was to investigate the effects of ...

journal_title：International journal of sports medicine

authors： Matsakas A,Nikolaidis MG,Kokalas N,Mougios V,Diel P

更新日期：2004-10-01 00:00:00

abstract：:Uncoupling protein 3 is believed to be involved in total body energy expenditure, including the regulation of fat and glucose metabolism. These biochemical processes may distinguish top ultra-endurance triathletes from slower competitors. The aim of this study was to determine whether the uncoupling protein 3 gene is ...

journal_title：International journal of sports medicine

authors： Hudson DE,Mokone GG,Noakes TD,Collins M

更新日期：2004-08-01 00:00:00

abstract：:Our purpose was to determine if an acute bout of heading soccer balls adversely affected postural control and self-reported symptoms of cerebral concussion. Thirty-one college-aged soccer players were randomly placed into either a kicking group or a heading group. Subjects either kicked or headed 18 soccer balls over ...

journal_title：International journal of sports medicine

authors： Schmitt DM,Hertel J,Evans TA,Olmsted LC,Putukian M

更新日期：2004-07-01 00:00:00

abstract：:Understanding the etiology of factors influencing bone mineral density (BMD) in Hispanic women for the prevention of osteoporosis was the aim of this investigation. Whole body BMD (WBBMD) of 39 Hispanic, premenopausal women aged 22 - 51 years was measured using dual-energy X-ray absorptiometry (DXA). Maximal aerobic c...

journal_title：International journal of sports medicine

authors： Afghani A,Abbott AV,Wiswell RA,Jaque SV,Gleckner C,Schroeder ET,Johnson CA

更新日期：2004-07-01 00:00:00

abstract：:The present trial focused on the exact role of colour and power Doppler sonography in Achilles tendinopathy and correlated these techniques with the clinical severity of the disease and with findings on grey-scale sonography. Twenty patients with in total 28 symptomatic Achilles tendons were included in this prospecti...

journal_title：International journal of sports medicine

authors： Reiter M,Ulreich N,Dirisamer A,Tscholakoff D,Bucek RA

更新日期：2004-05-01 00:00:00

abstract：:Screening for cardiac health should involve relevant parameters or indices that are easy and inexpensive to obtain. Various cardiac adaptation mechanisms develop during regular exercise that are affected by many factors, and these are reflected on a surface electrocardiogram. QT dispersion has been considered a surrog...

journal_title：International journal of sports medicine

authors： Kasikcioglu E,Kayserilioglu A,Yildiz S,Akhan H,Cuhadaroglu C

更新日期：2004-04-01 00:00:00

abstract：:The effect of recovery duration on performance and fatigue pattern during short exercises was studied including and excluding the flywheel inertia. Subjects (11 males and 11 females) performed a force-velocity test to determine their optimal force (f (opt)). On the following day, subjects performed randomly 4 series o...

journal_title：International journal of sports medicine

authors： Falgairette G,Billaut F,Giacomoni M,Ramdani S,Boyadjian A

更新日期：2004-04-01 00:00:00

abstract：:The purpose of this study was to investigate the effects of short-term, high-intensity sprint training on the root mean squared (RMS) and median frequency (MF) derived from surface electromyography (EMG), as well as peak power, mean power, total work, and plasma lactate levels in trained cyclists when performed concur...

journal_title：International journal of sports medicine

authors： Creer AR,Ricard MD,Conlee RK,Hoyt GL,Parcell AC

更新日期：2004-02-01 00:00:00

abstract：:The purpose of this report is to study serotonin reuptake of the brain in a severely overtrained athlete by using single-photon emission computed tomography (SPECT). A 26-year-old team athlete increased his training volume (by 200 %) and intensity markedly in a new high-level team. After two months, he started to feel...

journal_title：International journal of sports medicine

authors： Uusitalo AL,Valkonen-Korhonen M,Helenius P,Vanninen E,Bergström KA,Kuikka JT

更新日期：2004-02-01 00:00:00

abstract：:Increasing exercise intensities will induce an increase in glycolytic flux. High glycolytic activity is associated with reduced fat oxidation rates and increased accumulation of lactate. Both lactate and hydrogen ions have been shown to be directly related to the decreased fat oxidation rates. The aim of the present s...

journal_title：International journal of sports medicine

authors： Achten J,Jeukendrup AE

更新日期：2004-01-01 00:00:00

abstract：:To understand the influence of gender on oxygen consumption of respiratory muscles (VO(2)resp), 32 healthy subjects participated in the study (16 males, 16 females). They were divided into four groups: young males, young females, older males and older females. We used a closed circuit device which allowed a continuous...

journal_title：International journal of sports medicine

authors： Topin N,Mucci P,Hayot M,Prefaut C,Ramonatxo M

更新日期：2003-11-01 00:00:00

abstract：:This study aimed at investigating to what extent sauna-induced dehydration is effective to rapidly decrease body weight and whether this practice alters strength and/or explosive power (jump capacity) in healthy athletes. We also investigated whether the observed changes could be rapidly reversed through rehydration. ...

journal_title：International journal of sports medicine

authors： Gutiérrez A,Mesa JL,Ruiz JR,Chirosa LJ,Castillo MJ

更新日期：2003-10-01 00:00:00

abstract：:The present series of experiments were conducted to access the surface EMG frequency parameters during repeated fingertip isometric contractions to determine if they can be used as a fatigue index under specific grip used in rock climbing. Electromyograms of the finger flexors and extensors were characterised in ten e...

journal_title：International journal of sports medicine

authors： Quaine F,Vigouroux L,Martin L

更新日期：2003-08-01 00:00:00

abstract：:We describe the metabolic changes in the blood that appeared during a maximal 400-m swimming test in 7 male swimmers by Fourier-transform infrared spectrometry (FT-IR spectrometry). A 400-m test (255.9 +/- 6.8 s) was performed during which stroke frequency and time to complete each pool distance were recorded. In thre...

journal_title：International journal of sports medicine

authors： Petibois C,Déléris G

更新日期：2003-07-01 00:00:00

abstract：:This study examined injury and physical fitness outcomes in Basic Combat Training (BCT) during implementation of Physical Readiness Training (PRT). PRT is the U.S. Army's emerging physical fitness training program. An experimental group (EG, n = 1284), which implemented the PRT program, was compared to a control group...

journal_title：International journal of sports medicine

authors： Knapik JJ,Hauret KG,Arnold S,Canham-Chervak M,Mansfield AJ,Hoedebecke EL,McMillian D

更新日期：2003-07-01 00:00:00

abstract：:The aim of this study was to determine the effects of gender and chronic hyperactivity (training) on musculo-tendinous stiffness and joint flexibility and to examine in vivo whether those stiffness parameters were correlated. Thus, maximal isometric voluntary contraction, series elastic stiffness during wrist flexion ...

journal_title：International journal of sports medicine

authors： Cornu C,Maïsetti O,Ledoux I

更新日期：2003-05-01 00:00:00

abstract：:The present study examined the behaviour of the Achilles tendon (AT) - triceps surae (TS) muscle complex during running and long jump take-off. High AT forces were measured in the push-off phase in running even with very low EMG activity. In the long jump, high rate of stiffness development was a characteristic of the...

journal_title：International journal of sports medicine

authors： Kyröläinen H,Finni T,Avela J,Komi PV

更新日期：2003-04-01 00:00:00

abstract：:Muscle biopsies from m. vastus lateralis of two world class shot putters (shot putter 1 and 2) and the untrained brother of shot putter 1 were analyzed for fiber type distribution with ATPase staining and in situ hybridization for the expression of alkali myosin light chain (MLC) isoforms. Shot putter 2 had a predomin...

journal_title：International journal of sports medicine

authors： Billeter R,Jostarndt-Fögen K,Günthör W,Hoppeler H

更新日期：2003-04-01 00:00:00

abstract：:The stress of strenuous long-term exercise may alter renal function. Whether this is also true for marathon cycling is unknown so far. The purpose of this study was to evaluate renal function following competitive marathon cycling. We investigated 38-male, well-trained recreational cyclists credibly not taking any kin...

journal_title：International journal of sports medicine

authors： Neumayr G,Pfister R,Hoertnagl H,Mitterbauer G,Getzner W,Ulmer H,Gaenzer H,Joannidis M

更新日期：2003-02-01 00:00:00

abstract：:We studied the effects of a twelve months endurance-training program on exercise-induced change in blood contents in thirteen rowers. A standardized testing-session (18 km rowing at 80 % of VO2max) was performed 19 times during the training program. Capillary blood samples were taken at rest and immediately post-exerc...

journal_title：International journal of sports medicine

authors： Petibois C,Cazorla G,Déléris G

更新日期：2003-01-01 00:00:00

abstract：:The aim of this study was to compare hormonal changes in plasma total testosterone (T), cortisol (C), luteinizing hormone (LH), follicle-stimulating hormone (FSH) and prolactin (P) in two world-class teams, both consisting of 9 top male pro-cyclists, during a real sports situation (the 1998 "Vuelta a España", a 3-week...

journal_title：International journal of sports medicine

authors： Fernández-Garcia B,Lucía A,Hoyos J,Chicharro JL,Rodriguez-Alonso M,Bandrés F,Terrados N

更新日期：2002-11-01 00:00:00

abstract：:Cardiac damage has recently been implicated in the aetiology of "exercise induced cardiac dysfunction". The humoral markers of cardiac damage that have been utilised to date are not sufficiently cardio-specific to investigate this hypothesis. The aim of the present study was to examine cardiac function following prolo...

journal_title：International journal of sports medicine

authors： Shave RE,Dawson E,Whyte G,George K,Ball D,Gaze DC,Collinson PO

更新日期：2002-10-01 00:00:00

abstract：:The aim of this study was to compare the effects of aerobic and mental training on cognitive function and to determine if the association of the two techniques shows better results. Thirty-two healthy elderly subjects (60 - 76 years) were assigned to one of four groups: aerobic training, mental training, combined aero...

journal_title：International journal of sports medicine

authors： Fabre C,Chamari K,Mucci P,Massé-Biron J,Préfaut C

更新日期：2002-08-01 00:00:00

abstract：:Sports influence the hypothalamus-pituitary-gonadal axis (HPG). The purpose of this study was to analyze the effects of physical stress on qualitative male LH secretion. We evaluated the HPG axis at rest and the LH response to a treadmill exercise (90 % of Vdot;O 2 max) in eight trained (running 50 to 70 km/week) and ...

journal_title：International journal of sports medicine

authors： Di Luigi L,Guidetti L,Baldari C,Fabbri A,Moretti C,Romanelli F

更新日期：2002-07-01 00:00:00

abstract：:The purpose of this randomized cross-over study was to investigate the effects of a 4-min long, 2-mm vertically-vibrating vibration-exercise on muscle performance and body balance in healthy subjects. Sixteen volunteers (eight men and women aged 18-35 years) underwent both the 4-min vibration- and sham-interventions i...

journal_title：International journal of sports medicine

authors： Torvinen S,Sievänen H,Järvinen TA,Pasanen M,Kontulainen S,Kannus P

更新日期：2002-07-01 00:00:00

abstract：:This study investigated the relationship between sports participation/physical activity during youth (13 - 18 years of age) and adulthood (30 - 40 years of age), and cardiovascular risk factors (body fat and fat distribution, blood pressure, lipoprotein levels and cardiorespiratory fitness) at 40 years of age. Subject...

journal_title：International journal of sports medicine

authors： Lefevre J,Philippaerts R,Delvaux K,Thomis M,Claessens AL,Lysens R,Renson R,Vanden Eynde B,Vanreusel B,Beunen G

更新日期：2002-05-01 00:00:00