Lower limb loading in step aerobic dance.

abstract：:Although analysis of lactate concentrations with a Yellow Springs Instruments (YSI) automated analyzer has become very popular in Sports Medicine, the accuracy and reliability of this technique has not been carefully studied. Additionally, the influence of a common lysing agent Triton X-100 (TX) on blood lactate measu...

journal_title：International journal of sports medicine

authors： Bishop PA,Smith JF,Kime JC,Mayo JM,Tin YH

更新日期：1992-01-01 00:00:00

abstract：:The circulation of blood during upright exercise involves a two-pump system, a central cardiac pump and a peripheral pump responsible for systemic venous return. Axiomatically, the function of the two pumps must be equal, and certain evidence suggests that the peripheral pump may "drive" the circulation during exercis...

journal_title：International journal of sports medicine

authors： Rowland TW

更新日期：2001-11-01 00:00:00

abstract：:This study aimed to investigate how the trunk muscularity is related to sprint running performance. In 23 youth soccer players, the cross-sectional images at the mid level of each of L1-L2, L2-L3, L3-L4, L4-L5, and L5-S1 were obtained using magnetic resonance imaging to determine the cross-sectional areas (CSAs) of re...

journal_title：International journal of sports medicine

authors： Kubo T,Hoshikawa Y,Muramatsu M,Iida T,Komori S,Shibukawa K,Kanehisa H

更新日期：2011-03-01 00:00:00

abstract：:The aim of this study was to investigate the influence of a 4-week electromyostimulation training program on the strength of the knee extensors and the vertical jump performance of 10 basketball players. Electromyostimulation sessions were carried out 3 times weekly; each session consisted of 48 contractions. Testing ...

journal_title：International journal of sports medicine

authors： Maffiuletti NA,Cometti G,Amiridis IG,Martin A,Pousson M,Chatard JC

更新日期：2000-08-01 00:00:00

abstract：:This study compared 6 weeks of incline treadmill interval training (INC) performed on a 10% treadmill grade using either sprint-like efforts or slower, longer bouts. 24 individuals were randomly assigned between 2 groups that each completed 2 INC and one 30-min level-grade sessions∙wk-1. Training intensities, bout dur...

journal_title：International journal of sports medicine

authors： Ferley DD,Hopper DT,Vukovich MD

更新日期：2016-11-01 00:00:00

abstract：:The purpose of this study was to measure and compare the total energy expenditure of the four competitive swimming strokes. Twenty-six swimmers of international level were submitted to an incremental set of 200-m swims (5 swimmers at Breaststroke, 5 swimmers at Backstroke, 4 swimmers at Butterfly and 12 swimmers at Fr...

journal_title：International journal of sports medicine

authors： Barbosa TM,Fernandes R,Keskinen KL,Colaço P,Cardoso C,Silva J,Vilas-Boas JP

更新日期：2006-11-01 00:00:00

abstract：:Forty-six male wheelchair basketball players performed a set of field tests to evaluate aerobic capacity (25 m shuttle run), anaerobic capacity (30s sprint), and six specific wheelchair basketball skills. Overall test-retest reliability (n = 20) ranged from r = 0.65 to r = 0.97. To study the validity (criterion relate...

journal_title：International journal of sports medicine

authors： Vanlandewijck YC,Daly DJ,Theisen DM

更新日期：1999-11-01 00:00:00

abstract：:The anaerobic threshold (AnT) seems to be not only a physiologic boundary but also a transition after which swimmers technique changes, modifying their biomechanical behaviour. We expanded the AnT concept to a biophysical construct in the four conventional swimming techniques. Seventy-two elite swimmers performed a 5×...

journal_title：International journal of sports medicine

authors： Carvalho DD,Soares S,Zacca R,Sousa J,Marinho DA,Silva AJ,Vilas-Boas JP,Fernandes RJ

更新日期：2020-05-01 00:00:00

abstract：:The peripheral adaptation process associated with repeating eccentric training over a longer period of time was studied in m. vastus lateralis of eleven healthy males aged 24 +/- 4 years. The maximal dynamic concentric muscle strength was only slightly improved after 8 weeks of training. However, eccentric work capaci...

journal_title：International journal of sports medicine

authors： Fridén J,Seger J,Sjöström M,Ekblom B

更新日期：1983-08-01 00:00:00

abstract：:Circulating progenitor cells (CPC) are bone marrow-derived cells that are mobilized into the circulation. While exercise is a powerful mediator of hematopoiesis, CPC levels increase, and reports of their activation after different types of exercise are contradictory. Moreover, few studies have compared the possible ef...

journal_title：International journal of sports medicine

authors： Niño O,Balague N,Aragones D,Blasi J,Alamo JM,Corral L,Javierre C,Miguel M,Viscor G,Ventura JL

更新日期：2015-04-01 00:00:00

abstract：:The purpose of this study was to analyse adaptations in propulsion technique and gross efficiency in novice able-bodied subjects during the initial phase of learning hand-rim wheelchair propulsion to music. 22 able bodied participants performed wheelchair propulsion (1.1 m·s(-1)) followed by a VO(2) peak test on a whe...

journal_title：International journal of sports medicine

authors： Goosey-Tolfrey VL,West M,Lenton JP,Tolfrey K

更新日期：2011-02-01 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：:Little information is available regarding the relative effectiveness of various treadmill exercise protocols in eliciting maximal oxygen consumption (VO2 max) values in children. In this study of 10- to 12-year-old boys, running protocols produced significantly higher VO2 max levels compared with walking, but there we...

journal_title：International journal of sports medicine

authors： Sheehan JM,Rowland TW,Burke EJ

更新日期：1987-02-01 00:00:00

abstract：:This study investigated the effects of a training taper on muscle damage indices and performance. Two matched groups of seven male runners each performed two self paced half-marathons on a motorised treadmill. After the first half-marathon one group maintained their normal weekly training volume, while the taper group...

journal_title：International journal of sports medicine

authors： Child RB,Wilkinson DM,Fallowfield JL

更新日期：2000-07-01 00:00:00

abstract：:This study aims to investigate the relationship between subjective and external measures of load in professional youth football players whilst accounting for the effect of training theme or competition. Data from ratings of perceived exertion and global positioning system-derived measures of external training load wer...

journal_title：International journal of sports medicine

authors： Maughan P,Swinton P,MacFarlane N

更新日期：2020-12-01 00:00:00

abstract：:The purpose of this study was to analyse intramuscular perfusion response in ultrastructural muscle lesions, by applying contrast-enhanced ultrasound (CEUS) to a delayed onset muscle soreness (DOMS) model. Results of this analysis were compared to high-resolution 3 Tesla MRI T2-weighted sequences. 14 healthy participa...

journal_title：International journal of sports medicine

authors： Kellermann M,Heiss R,Swoboda B,Gelse K,Freiwald J,Grim C,Nagel A,Uder M,Wildner D,Hotfiel T

更新日期：2017-10-01 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：:The early vascular adaptation to indoor cycling, a popular activity at many fitness centres, is incompletely evaluated. Forty two healthy women (21-45 years) underwent measurements of arterial wall properties and geometry as well as a maximal bicycle exercise test before and after a 3 months period during which 21 of ...

journal_title：International journal of sports medicine

authors： Bjarnegård N,Hedman K,Länne T

更新日期：2019-04-01 00:00:00

abstract：:The effects of two 4-week training programs on knee flexor and extensor strength were measured isokinetically (angular velocity 30 degrees, 180 degrees/s) and isometrically in division IV soccer players. Group A followed a team training program and group B an individual weight training program. Group C served as contr...

journal_title：International journal of sports medicine

authors： Oberg BE,Möller MH,Ekstrand J,Gillquist J

更新日期：1985-06-01 00:00:00

abstract：:Caffeine enhances endurance performance; however, its effect on accumulated lactate remains unclear. Conversely, taurine, which also enhances endurance performance, decreases accumulated lactate. In this study, the effect of combination of caffeine and taurine on endurance performance was assessed. Mice ran on a tread...

journal_title：International journal of sports medicine

authors： Imagawa TF,Hirano I,Utsuki K,Horie M,Naka A,Matsumoto K,Imagawa S

更新日期：2009-07-01 00:00:00

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 lipolytic and the cardiac responses to 30 min of two different forms of stress--a standardized mental stress test and submaximal bicycle exercise--were investigated in non-obese healthy subjects. This was done by microdialysis of the extracellular space in the abdominal subcutaneous adipose tissue in order to dete...

journal_title：International journal of sports medicine

authors： Wennlund A,Wahrenberg H,Hagström-Toft E,Bolinder J,Arner P

更新日期：1994-10-01 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：:We examined the effects of 28 weeks of training on 24-hr urinary catecholamine excretion and mood (evaluated using the Recovery-Stress Questionnaire for Athletes RESTQ-Sport) among seven national young female tennis players. Data were collected after a 1-month rest (September, T (1)), 3 months after T1(T2) and 7 month...

journal_title：International journal of sports medicine

authors： Filaire E,Rouveix M,Duclos M

更新日期：2009-01-01 00:00:00

abstract：:Prospective studies on overuse injuries and their impact on athletic training among youth team sports are scarce. The purpose of this study was to investigate the incidence, severity and player related risk factors of overuse injuries among young (12-20 years) basketball and floorball players. A total of 387 players p...

journal_title：International journal of sports medicine

authors： Leppänen M,Pasanen K,Kannus P,Vasankari T,Kujala UM,Heinonen A,Parkkari J

更新日期：2017-10-01 00:00:00

abstract：:We aimed to determine whether blood flow restriction (BFR) alters the characteristics of individual motor units during low-intensity (LI) exercise. Eight men (26.0±3.8 yrs) performed 5 sets of 15 knee extensions at 20% of one-repetition maximum (with and without BFR). Maximal isometric voluntary contractions (MVC) wer...

journal_title：International journal of sports medicine

authors： Fatela P,Mendonca GV,Veloso AP,Avela J,Mil-Homens P

更新日期：2019-09-01 00:00:00

abstract：:The aim of this study was to compare heart rate variability (HRV) recovery after two iso-volume (5 km) exercises performed at different intensities. 14 subjects volunteered (25.17±5.08 years; 74.7±6.28 kg; 175±0.05 cm; 59.56±5.15 mL·kg(-1)·min(-1)) and after determination of peak oxygen uptake (VO2Peak) and the speed ...

journal_title：International journal of sports medicine

authors： Cabral-Santos C,Giacon TR,Campos EZ,Gerosa-Neto J,Rodrigues B,Vanderlei LC,Lira FS

更新日期：2016-06-01 00:00:00

abstract：:Throwing arm injuries are common and often related to the shoulder external and internal rotation. Quantitative assessment may provide new insights to physical assessment and options for treatment. After having signed IRB approved consents and filled out injury questionnaires, 96 baseball pitchers were examined on bot...

journal_title：International journal of sports medicine

authors： Zheng N,Eaton K

更新日期：2012-06-01 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

abstract：:Since doping improves athletic performance, anti-doping policies should have the opposite effect. This analysis examined whether changes in the speed of major cycling races reflect recent anti-doping efforts. Average speeds of 5 (th) place finishers of the Tour de France, Giro d'Italia, and Vuelta a España cycling rac...

journal_title：International journal of sports medicine

authors： Perneger TV

更新日期：2010-04-01 00:00:00