Effect of increased plasma non-esterified fatty acid concentrations on endurance performance during beta-adrenoceptor blockade.

abstract：:During the world junior speed skating championship 2002 all athletes (60 males, 56 females) were subjected to hematologic blood testing one day before the competition as requested by International Skating Union--ISU. This study aimed to obtain hematological reference values for junior athletes, whilst the influence of...

journal_title：International journal of sports medicine

authors： Mayr A,Kuipers H,Falk M,Santer P,Wierer B

更新日期：2006-04-01 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：:As of 2017, the international football federation introduced the change of direction ability test (CODA) and the 5×30 m sprint test for assistant referees (ARs) and continued the 6×40 m sprint test for field referees (FRs) as mandatory tests. The aim of this study was to evaluate the association between performance in...

journal_title：International journal of sports medicine

authors： Riiser A,Andersen V,Castagna C,Pettersen SA,Saeterbakken A,Froyd C,Ylvisaker E,Naess Kjosnes T,Fusche Moe V

更新日期：2018-07-01 00:00:00

abstract：:Long-term side effects of high doses of anabolic androgenic steroids self-administration were evaluated in this study. Twenty male bodybuilders, voluntarily starting steroid self-administration, were followed every 6 months over 2 years. Physical examination, haematological, metabolic and endocrine variables, semen an...

journal_title：International journal of sports medicine

authors： Bonetti A,Tirelli F,Catapano A,Dazzi D,Dei Cas A,Solito F,Ceda G,Reverberi C,Monica C,Pipitone S,Elia G,Spattini M,Magnati G

更新日期：2008-08-01 00:00:00

abstract：:The availability of O2 in the human vastus lateralis muscle has been investigated with non-invasive near-infrared spectroscopy (NIRS) using a commercially available unit (RunMan, NIM Inc. Philadelphia). The measuring probe placed above the skin illuminates the underlying tissue and measures the reflected light at two ...

journal_title：International journal of sports medicine

authors： Sahlin K

更新日期：1992-10-01 00:00:00

abstract：:The purpose of this study was to determine the effect of a reduced ventilatory frequency (Vf) on blood gases and acid-base changes during three intensities of cycling exercise. VO2max and lactate threshold workload (LaT) of six subjects were assessed on a Monark ergometer. Experimental rides were performed 1) with no ...

journal_title：International journal of sports medicine

authors： Sharp RL,Williams DJ,Bevan L

更新日期：1991-02-01 00:00:00

abstract：:The influence of a short, supramaximal task of 30 s duration on plasma volume (PV) was tested in 14 female physical education students. Hemoglobin (Hb), hematocrit (Hct), and osmolality (Osm) were tested pre- and post-exercise. Performance of the exercise test, consisting of 30 s all-out pedaling against a load of 4.4...

journal_title：International journal of sports medicine

authors： Rotstein A,Bar-Or O,Dlin R

更新日期：1982-11-01 00:00:00

abstract：:It has been suggested that lactate concentrations may provide a guide to an optimal training intensity. However, lactate concentrations established during incremental exercise in the laboratory are not always indicative of what is occurring during constant-load exercise at the same intensity. Ideally, lactate concentr...

journal_title：International journal of sports medicine

authors： Bishop D

更新日期：2001-10-01 00:00:00

abstract：:Eight competitive racewalkers were studied to determine a) the speed where running and racewalking become equally efficient, b) if, at a similar VO2, the physiologic responses to submaximal exercise differ between running and racewalking, and c) if VO2 max can be attained during racewalking. The speed at which running...

journal_title：International journal of sports medicine

authors： Hagberg JM,Coyle EF

更新日期：1984-04-01 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 influence of exercise training on plasma amino acid concentrations at rest and after exercise was examined in a highly trained group of humans and compared with the response of a control group of nontrained healthy humans. After a bout of intense exercise at the same relative work load, the trained group exhibited...

journal_title：International journal of sports medicine

authors： Einspahr KJ,Tharp G

更新日期：1989-08-01 00:00:00

abstract：:The phase angle is used to evaluate nutritional status and is an indicator of cellular health. Cardiorespiratory fitness and body composition are strong indicators of health during adolescence. We aimed to evaluate if body composition and cardiorespiratory fitness have an association with phase angle among adolescents...

journal_title：International journal of sports medicine

authors： Langer RD,de Fatima Guimarães R,Gonçalves EM,Guerra-Junior G,de Moraes AM

更新日期：2020-08-01 00:00:00

abstract：:This study sought to determine if prophylactic ankle taping and bracing influenced vertical leg stiffness during hopping. Twenty healthy and physically active participants completed testing under three ankle stabilizer conditions, ankle tape, semi-rigid ankle brace or control (no stabilizer) during three separate sess...

journal_title：International journal of sports medicine

authors： Williams S,Riemann BL

更新日期：2009-05-01 00:00:00

abstract：:Prevalence of Achilles tendinopathy increases with age leading to a weaker tendon with predisposition to rupture. Conclusive evidence of the influence of age and pathology on Achilles tendon (AT) properties remains limited, as previous studies are based on standardized isometric conditions. The study investigates the ...

journal_title：International journal of sports medicine

authors： Intziegianni K,Cassel M,Rauf S,White S,Rector M,Kaplick H,Wahmkow G,Kratzenstein S,Mayer F

更新日期：2016-11-01 00:00:00

abstract：:The purpose of this study was to compare acute mechanical and metabolic effects of 2 sessions of resistance training equated by volume and total resting time but with different set configuration: sets to failure (FS) vs. distribution of rest between each repetition (NFS). 10 male judoists completed a session consistin...

journal_title：International journal of sports medicine

authors： Iglesias-Soler E,Carballeira E,Sánchez-Otero T,Mayo X,Jiménez A,Chapman ML

更新日期：2012-05-01 00:00:00

abstract：:Ten young male adults (mean age 46.9 +/- 1.2 yrs) with 9.2 +/- 1.4 years of weight training experience and the ability to parallel squat at least 1.5 times their body mass were selected as subjects. The exercise session consisted of sets of 10 repetitions at 65% 1-RM of the parallel leg squat, with a cadence of one re...

journal_title：International journal of sports medicine

authors： Nieman DC,Henson DA,Sampson CS,Herring JL,Suttles J,Conley M,Stone MH,Butterworth DE,Davis JM

更新日期：1995-07-01 00:00:00

abstract：:During rowing, the respiratory musculature is confronted with dual demands: assisting the propulsive force generation and as the effector for ventilatory control. We determined the pulmomechanical and breathing pattern features of rowing-induced hyperpnea in five national class rowers (18 years old). Each subject perf...

journal_title：International journal of sports medicine

authors： Steinacker JM,Both M,Whipp BJ

更新日期：1993-09-01 00:00:00

abstract：:Creatine supplementation has become a common practice among competition athletes participating in different sports over the last few years. The mechanism by which supplementary creatine could have potential ergogenic effects would be an increased muscle creatine and phosphocreatine concentration, leading to a higher r...

journal_title：International journal of sports medicine

authors： Mujika I,Padilla S

更新日期：1997-10-01 00:00:00

abstract：:Despite evidence that cancer and its treatments severely reduce cardiorespiratory fitness (CRF), normative data for cancer survivors do not exist. The present study identifies age and gender-specific CRF distributions in a cancer population. The use of cancer-specific normative CRF data may help stratify initial fitne...

journal_title：International journal of sports medicine

authors： Schneider CM,Repka CP,Brown JM,Lalonde TL,Dallow KT,Barlow CE,Hayward R

更新日期：2014-12-01 00:00:00

abstract：:Haemostasis has been studied by several authors during exposure to altitude hypoxia. On acute induction to hypoxia, platelet count, platelet aggregability and bleeding time are normal; an increase of thromboxane released from platelets and of prostacyclin, released from endothelial cells is observed; coagulation facto...

journal_title：International journal of sports medicine

authors： Le Roux G,Larmignat P,Marchal M,Richalet JP

更新日期：1992-10-01 00:00:00

abstract：:We studied 12 highly trained athletes, 6 male ice-hockey players and 6 cross-country skiers (2 females, 4 males). All of them participated in a maximal electrically braked bicycle ergometer test in a hypobaric chamber at the simulated altitude of 3000m (520 mmHg) and in normobaric conditions two days apart in random o...

journal_title：International journal of sports medicine

authors： Koistinen P,Takala T,Martikkala V,Leppäluoto J

更新日期：1995-02-01 00:00:00

abstract：:Gait retraining is a method for management of patellofemoral pain, which is a common ailment among recreational runners. The present study investigated the effects of gait retraining from rearfoot strike to forefoot strike on running economy, heart rate, and respiratory exchange ratio immediately post-retraining and o...

journal_title：International journal of sports medicine

authors： Roper JL,Doerfler D,Kravitz L,Dufek JS,Mermier C

更新日期：2017-12-01 00:00:00

abstract：:A prospective study of acute injuries from sports and physical exercise was carried out during 1 year in a total population of a municipality with 31,620 inhabitants. Data on exposure were collected: the number of participants in each sport, the hours of participation, and number of weeks in the season per year. The n...

journal_title：International journal of sports medicine

authors： de Loës M,Goldie I

更新日期：1988-12-01 00:00:00

abstract：:The purpose of this study was to compare anaerobic running capacity (ARC, i.e., the distance that can be run using only stored energy sources in the muscle) determined from a 3-parameter systems model with other anaerobic indices and with running performance in the 800 m. Seventeen trained male subjects (.VO(2max) = 6...

journal_title：International journal of sports medicine

authors： Bosquet L,Delhors PR,Duchene A,Dupont G,Leger L

更新日期：2007-06-01 00:00:00

abstract：:Despite the vigorous nature of rock/pop drumming, there are no precise data on the energy expenditure of this activity. The aim of this study was to quantify the energy cost of rock/pop drumming. Fourteen male drummers (mean±SD; age 27±8 yrs.) completed an incremental drumming test to establish the relationship betwee...

journal_title：International journal of sports medicine

authors： De La Rue SE,Draper SB,Potter CR,Smith MS

更新日期：2013-10-01 00:00:00

abstract：:The nutrition of 57 native Bolivian boys living at high altitude (HA) in La Paz (+/- 4000 m) and of 63 boys living at low altitude (LA) in St. Cruz (+/- 400 m) is described. The dietary information was obtained with a 24-h recall method, by interviewing the child and mother. The food items are listed in household meas...

journal_title：International journal of sports medicine

authors： Post GB,Lujan C,San Miquel JL,Kemper HC

更新日期：1994-04-01 00:00:00

abstract：:There are ethical objections to inducing cumulative muscle damage and associated decrements of performance deliberately in a healthy athlete. Available data on acute and chronic over-exertion thus include the changes of immune response observed following a single bout of exhausting exercise, sequential observations ma...

journal_title：International journal of sports medicine

authors： Shephard RJ,Shek PN

更新日期：1998-04-01 00:00:00

abstract：:To investigate the effect of a transition program of simulated barefoot running (SBR) on running kinematics and foot-strike patterns, female recreational athletes (n=9, age 29 ± 3 yrs) without SBR experience gradually increased running distance in Vibram FiveFingers SBR footwear over 12 weeks. Matched controls (n=10, ...

journal_title：International journal of sports medicine

authors： McCarthy C,Fleming N,Donne B,Blanksby B

更新日期：2014-05-01 00:00:00

abstract：:The purpose of the present study was to test the hypothesis that large increases in blood lactate concentration ([La] (b)) and/or body temperature may occur during an endurance training on a rowing ergometer and disrupt training. The influence of an increase in air convection on the capacity to perform a prolonged exe...

journal_title：International journal of sports medicine

authors： Maciejewski H,Messonnier L,Moyen B,Bourdin M

更新日期：2007-11-01 00:00:00

abstract：:The major objective in this study was a comparison of the motor performance of young male smokers and non-smokers. We tested the endurance capacity, maximal isometric strength, speed of whole-body movements, flexibility and balancing ability of 74 smokers and 118 non-smokers. Then we measured the balancing ability, th...

journal_title：International journal of sports medicine

authors： Burtscher M,Likar R,Pechlaner C,Kunz F,Philadelphy M

更新日期：1994-05-01 00:00:00