Muscle fiber composition and enzyme activities in elite female distance runners.

abstract：:Cardiac vagal tone (CVT), a key determinant of resting heart rate (HR), is progressively withdrawn with incremental exercise and nearly abolished at maximal effort. While maximal HR decreases with age, there remains a large interindividual variability of results for any given age. In the present study, we hypothesized...

journal_title：International journal of sports medicine

authors： Duarte CV,Araujo CG

更新日期：2013-06-01 00:00:00

abstract：:Aerobic performance is negatively impacted by tropical climate due to impairment of thermoregulatory mechanisms. We tested the hypothesis that a torso application of a 4% menthol solution would have the same effect on a best performance 10-km run as an external use of cold water. Thirteen trained male athletes complet...

journal_title：International journal of sports medicine

authors： Hermand E,Collado A,Hue O

更新日期：2020-03-01 00:00:00

abstract：:Fourteen male physical education students performed a single bout of running until exhaustion on the treadmill at 22 km/h and 7.5% slope. They received single oral doses of 100 mg bupranolol (nonselective beta-blockade), 100 mg metoprolol (beta-1-selective blockade), and placebo 60-90 min before running. Arterialized ...

journal_title：International journal of sports medicine

authors： Schnabel A,Kindermann W,Salas-Fraire O,Cassens J,Steinkraus V

更新日期：1983-11-01 00:00:00

abstract：:The objectives of this study were to 1) continuously assess oxygen uptake during and after difficult sport rock climbing and 2) to evaluate the effects of active versus passive recovery on post-climbing blood lactate and hand grip strength. Fifteen expert rock climbers attempted to climb (i.e., red point lead) a 20 m ...

journal_title：International journal of sports medicine

authors： Watts PB,Daggett M,Gallagher P,Wilkins B

更新日期：2000-04-01 00:00:00

abstract：:It has been recently suggested that high and sustained lactate levels may elicit increases in peripheral B-EN concentrations (16). We have observed elevated and sustained lactate concentrations in response to a low-volume resistive exercise protocol (14) that were similar to those from other exercise protocols that pr...

journal_title：International journal of sports medicine

authors： Kraemer RR,Acevedo EO,Dzewaltowski D,Kilgore JL,Kraemer GR,Castracane VD

更新日期：1996-01-01 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：:This study determined the concurrent validity and reliability of force, velocity and power measurements provided by accelerometry, linear position transducer and Samozino's methods, during loaded squat jumps. 17 subjects performed squat jumps on 2 separate occasions in 7 loading conditions (0-60% of the maximal concen...

journal_title：International journal of sports medicine

authors： Giroux C,Rabita G,Chollet D,Guilhem G

更新日期：2015-02-01 00:00:00

abstract：:The purpose of this investigation was to identify physiological predictors of maximum treadmill walking performance (MWD) in patients with intermittent claudication. Forty-five claudicants performed a graded treadmill test to determine MWD, peak oxygen uptake, and gas exchange threshold. Calf muscle oxygenation (StO (...

journal_title：International journal of sports medicine

authors： Tew GA,Nawaz S,Blagojevic M,Zwierska I,Saxton JM

更新日期：2009-06-01 00:00:00

abstract：:Electromyographic and force production characteristics of leg extensor muscles of elite weight lifters (n = 14) were examined during isometric, concentric, and various stretch-shortening cycle exercises. The data showed that utilization of stored elastic energy of leg extensor muscles was observable in countermovement...

journal_title：International journal of sports medicine

authors： Häkkinen K,Komi PV,Kauhanen H

更新日期：1986-06-01 00:00:00

abstract：:Measurement of skeletal muscle strength gains increasing importance as outcome parameter in patients with chronic heart failure. This study aimed at establishing short-term reliability of isokinetic strength measurements of knee extensor and flexor muscles in 38 patients with chronic heart failure. Strength tests were...

journal_title：International journal of sports medicine

authors： Quittan M,Wiesinger GF,Crevenna R,Nuhr MJ,Sochor A,Pacher R,Fialka-Moser V

更新日期：2001-01-01 00:00:00

abstract：:The hypothesis that blood biochemical measurements of iron (Fe), copper (Cu), magnesium (Mg) and zinc (Zn) nutritional status and dietary intakes of these minerals are useful predictors of 100-yd free-style swimming performance during actual competition was examined in five female and five male collegiate swimmers. Di...

journal_title：International journal of sports medicine

authors： Lukaski HC,Siders WA,Hoverson BS,Gallagher SK

更新日期：1996-10-01 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：:The aim of the present study was to compare the peak vertical ground reaction force (V-GRF(peak)) and impulse of women performing water aerobic exercises at different intensities in aquatic and dry land environments. 15 young women performed 1 session in each environment consisting of 3 water aerobic exercises (statio...

journal_title：International journal of sports medicine

authors： Alberton CL,Tartaruga MP,Pinto SS,Cadore EL,Antunes AH,Finatto P,Kruel LF

更新日期：2013-10-01 00:00:00

abstract：:We investigated the possible influence of an exhaustive physical exercise on mental stress biomarkers (serotonin, tryptophan, and beta-endorphin) along with dopamine, noradrenaline and free fatty acids in an ultramarathon race in which 45 km was run on the first day and 90 km on the second. We obtained serum samples a...

journal_title：International journal of sports medicine

authors： Agawa H,Yamada N,Enomoto Y,Suzuki H,Hosono A,Arakawa K,Ghadimi R,Miyata M,Maeda K,Shibata K,Tokudome M,Goto C,Tokudome Y,Hoshino H,Imaeda N,Marumoto M,Suzuki S,Kobayashi M,Tokudome S

更新日期：2008-11-01 00:00:00

abstract：:The purpose of this study was to determine if an eight-week intrahospital supervised, conditioning program improves functional capacity and quality of life (QOL) in children (4 boys, 4 girls) (mean [SD] age: 10.9 [2.8] years [range: 8-16]) who have undergone bone marrow transplantation (BMT) for leukemia treatment wit...

journal_title：International journal of sports medicine

authors： San Juan AF,Chamorro-Viña C,Moral S,Fernández del Valle M,Madero L,Ramírez M,Pérez M,Lucia A

更新日期：2008-05-01 00:00:00

abstract：:The purpose of this study was to determine whether a post-exercise cryotherapy protocol could facilitate recovery of elbow flexor strength and reduce the severity of delayed onset muscle soreness following eccentric exercise. Eight resistance-trained males (23 +/- 3 yr) performed 64 eccentric elbow flexions with each ...

journal_title：International journal of sports medicine

authors： Paddon-Jones DJ,Quigley BM

更新日期：1997-11-01 00:00:00

abstract：:In 1988 Segura and Ventura (14) reported that 1.2 g of L-Tryptophan (L-TRY) supplementation increased total exercise time by 49.4% when the subjects were running at 80% of maximal oxygen uptake (VO2max). In human performance research, acute improvements of that category are rather uncommon. Both for this reason and be...

journal_title：International journal of sports medicine

authors： Stensrud T,Ingjer F,Holm H,Strømme SB

更新日期：1992-08-01 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：:It has been shown that bouts of high-intensity exercise may reduce subcutaneous adipose tissue more than low-intensity exercise. The aim of the present study was to examine if a discontinuous training protocol is more successful in reducing adipose tissue than a continuous endurance training protocol. Fourteen untrain...

journal_title：International journal of sports medicine

authors： Mäder U,Roth P,Furrer R,Brêchet JP,Boutellier U

更新日期：2001-07-01 00:00:00

abstract：:While phosphorous magnetic resonance spectroscopy ((31)P-MRS) and near-infrared spectroscopy (NIRS) provide methods for measuring spinal muscle function non-invasively, their reliability is not established. The aim of this study was assess the reliability (ICC) and error magnitude (CV%) of measurements of muscle phosp...

journal_title：International journal of sports medicine

authors： Fulford J,Liepa A,Barker AR,Meakin J

更新日期：2014-12-01 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：:Aerobic exercise performance decreases upon ascent to altitude whereas anaerobic performance remains unchanged. Although the effects of 1 - 3 wk of altitude acclimatization on both aerobic and anaerobic exercise performance have been well studied, the effects of short-term altitude acclimatization (i.e., 45 h) on thes...

journal_title：International journal of sports medicine

authors： Burtscher M,Faulhaber M,Flatz M,Likar R,Nachbauer W

更新日期：2006-08-01 00:00:00

abstract：:The purpose of this study was to determine the reproducibility of time at or above 90 % (t (90 % )VO (2max)) and 95 % (t (95 % )VO (2max)) maximal oxygen uptake during an intermittent treadmill run to exhaustion. Twenty-two distance runners (age 38.0 +/- 7.1 yrs) performed two identical incremental and two identical i...

journal_title：International journal of sports medicine

authors： Midgley AW,McNaughton LR,Carroll S

更新日期：2007-01-01 00:00:00

abstract：:Length and weight for age (1-12 months) charts are presented for the longitudinal Euro-Growth Study. "Weight-for-length", another widely used growth chart, presents a problem from a methodological point of view. Target length values (53-77 cm) are not observed in all infants, leading to truncated age distributions at ...

journal_title：International journal of sports medicine

authors： van't Hof MA,Haschke F

更新日期：1997-07-01 00:00:00

abstract：:Sedentary overweight or obese adult (age<60 years) women, allocated in type 2 diabetes mellitus (T2DM, n=13), dyslipidemia alone (DYS, n=12), dyslipidemia associated with hyperglycaemia (DYSHG, N=12), or healthy control (CON, n=10) groups, had their lipid, glucose, blood pressure, endurance performance, and anthropome...

journal_title：International journal of sports medicine

authors： Alvarez C,Ramirez-Campillo R,Martinez-Salazar C,Castillo A,Gallardo F,Ciolac EG

更新日期：2018-05-01 00:00:00

abstract：:Duplicate haemoglobin mass (Hbmass) measurements are recommended before and after altitude training sojourns to identify individual adaptations in athletes with a high level of certainty. Duplicate measurements reduce typical error (TE) and disclose measurement outliers, but are usually made on separate days, which is...

journal_title：International journal of sports medicine

authors： Naef N,Steiner T,Wehrlin JP

更新日期：2015-05-01 00:00:00

abstract：:Signs of overuse after intense muscular exertion are well described in adults, while little research has been conducted in children. The aim of the study was to investigate some indirect markers of muscle damage in 13 years old boys following two different protocols of one-leg stepping exercise to exhaustion. This ste...

journal_title：International journal of sports medicine

authors： Duarte JA,Magalhães JF,Monteiro L,Almeida-Dias A,Soares JM,Appell HJ

更新日期：1999-02-01 00:00:00

abstract：:Total body water (TBW) and water turnover rates (WTR) of six competitive male cyclists (CG) and six age-matched sedentary men (SG) were determined using deuterium oxide dilution and elimination. During the 7 day study, individuals in the CG cycled daily outside on average 50 (range 12-146) km at an average speed of 29...

journal_title：International journal of sports medicine

authors： Leiper JB,Pitsiladis Y,Maughan RJ

更新日期：2001-04-01 00:00:00

abstract：:Participation in aerobic dance is associated with a number of lower extremity injuries, and abnormal joint loading seems to be a factor in these. However, information on joint loading is limited. The purpose of this study was to investigate the kinetics of the lower extremity in step aerobic dance and to compare the d...

journal_title：International journal of sports medicine

authors： Wu HW,Hsieh HM,Chang YW,Wang LH

更新日期：2012-11-01 00:00:00

abstract：:The purpose of this study was to examine the effect of different loads on repetition speed during single sets of repetitions to failure in bench press and parallel squat. Thirty-six physical active men performed 1-repetition maximum in a bench press (1 RM (BP)) and half squat position (1 RM (HS)), and performed maxima...

journal_title：International journal of sports medicine

authors： Izquierdo M,González-Badillo JJ,Häkkinen K,Ibáñez J,Kraemer WJ,Altadill A,Eslava J,Gorostiaga EM

更新日期：2006-09-01 00:00:00