Effect of elastic energy and myoelectrical potentiation of triceps surae during stretch-shortening cycle exercise.

abstract：:Amenorrhea and osteoporosis are strongly associated in female athletes. Amenorrheic women show lower serum levels of brain-derived neurotrophic factor (BDNF) than eumenorrheic women. BDNF is known to regulate bone tissue development and remodeling; thus, athletes with low serum BDNF levels may show low bone mass. This...

journal_title：International journal of sports medicine

authors： Nose S,Yoshino O,Nomoto K,Harada M,Dohi M,Kawahara T,Osuga Y,Fujii T,Saito S

更新日期：2019-04-01 00:00:00

abstract：:The goal of this study was to examine the hypothesis that the difference in the 200-m sprint performance of amputee and able-bodied sprinters is due to a shorter step length rather than a lower step frequency. Men's elite-level 200-m races with a total of 16 able-bodied, 13 unilateral transtibial, 5 bilateral transtib...

journal_title：International journal of sports medicine

authors： Hobara H,Sano Y,Kobayashi Y,Heldoorn TA,Mochimaru M

更新日期：2016-02-01 00:00:00

abstract：:The purpose of this study was to assess the reliability of a pre-loaded 1 500-m treadmill time trial, conducted in moderate normobaric hypoxia. 8 trained runners/triathletes (24±3 years, 73.2±8.1 kg, 182.5±6.5 cm, altitude specific V˙O2max: 52.9±5.5 ml·kg(-1)·min(-1)) completed 3 trials (the first as a familiarisation...

journal_title：International journal of sports medicine

authors： Shannon O,Barlow M,Duckworth L,Woods DR,Barker T,Grindrod A,Griffiths A,O'Hara JP

更新日期：2016-09-01 00:00:00

abstract：:The present study was designed to evaluate the influence of starch structure on muscle glycogen resynthesis and cycling performance. Eight male cyclists (22 +/- 1 yr) completed an exercise protocol (DP) to decrease vastus lateralis glycogen concentration. This exercise consisted of 60 min cycling at 75% VO2max, follow...

journal_title：International journal of sports medicine

authors： Jozsi AC,Trappe TA,Starling RD,Goodpaster B,Trappe SW,Fink WJ,Costill DL

更新日期：1996-07-01 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：: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：: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：:The oxygen uptake (VO2) attained during a constant speed 800-m pace trial on a treadmill is less than the maximal VO2 (VO2max) in male middle-distance runners with a high VO2max (i.e., > 65 ml x kg (-1) x min (-1)). We therefore investigated whether the VO2 attained was influenced by the pacing strategy adopted. Eight...

journal_title：International journal of sports medicine

authors： Sandals LE,Wood DM,Draper SB,James DV

更新日期：2006-01-01 00:00:00

abstract：:The aim of the present study was to investigate why blood lactate after prolonged quadriceps contraction during hiking is only marginally increased. Eight sailors performed five 3-min hiking bouts interspersed with 5-s recovery periods. Whole body oxygen uptake, heart rate and lactate were recorded, along with continu...

journal_title：International journal of sports medicine

authors： Vogiatzis I,Tzineris D,Athanasopoulos D,Georgiadou O,Geladas N

更新日期：2008-01-01 00:00:00

abstract：:The aim of the present study was to investigate the relationship between maximal fat oxidation rate (MFO) measured during a progressive exercise test on a cycle ergometer and ultra-endurance performance. 61 male ironman athletes (age: 35±1 yrs. [23-47 yrs.], with a BMI of 23.6±0.3 kg/m2 [20.0-30.1 kg/m2], a body fat p...

journal_title：International journal of sports medicine

authors： Frandsen J,Vest SD,Larsen S,Dela F,Helge JW

更新日期：2017-11-01 00:00:00

abstract：:The between-days variability in ascertained gain factors for calibration of a wearable respiratory inductance plethysmograph (RIP) and validity thereof for the repeated use during exercise were examined. Consecutive 5-min periods of standing still, slow running at 8 km·h(-1), fast running at 14 km·h(-1) (male) or 12 k...

journal_title：International journal of sports medicine

authors： Heyde C,Mahler H,Roecker K,Gollhofer A

更新日期：2015-01-01 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：:During the period 1975-1981, 221 persons were treated conservatively at Tampere University Central Hospital for an acute knee ligament injury. A total of 194 patients (88%) were reexamined 8 +/- 3 years after the injury. In the clinical and radiological results, there were no significant differences between competitiv...

journal_title：International journal of sports medicine

authors： Kannus P,Järvinen M

更新日期：1987-10-01 00:00:00

abstract：:The present study assessed the effectiveness of an RPE learning protocol for improving the validity of the Borg 6-20 RPE scale for self-regulating exercise intensity during Indoor Cycling (IC). 16 healthy adults performed 5 IC sessions. Heart rate (HR) was continuously monitored. In sessions 1 and 5, participants perc...

journal_title：International journal of sports medicine

authors： Soriano-Maldonado A,Romero L,Femia P,Roero C,Ruiz JR,Gutierrez A

更新日期：2014-05-01 00:00:00

abstract：:The purpose of this study was to investigate the effect of sprint interval training (SIT) compared to control group (CG). 29 Judoists were assigned to SIT group (n=11, age 20.00±1.10 years) and CG (n=18, age 19.94±1.16 years). There were no significant changes in body fat and aerobic performance (VO2max, HRmax, and HR...

journal_title：International journal of sports medicine

authors： Kim J,Lee N,Trilk J,Kim EJ,Kim SY,Lee M,Cho HC

更新日期：2011-12-01 00:00:00

abstract：:To examine the influence of acute resistive exercise and "hormone status" on cytokine profile, 35 postmenopausal women (72 +/- 6.2 yr) underwent a moderate-high-intensity resistive exercise bout or rested. There were 4 groups: no hormone replacement (NHR, n = 9), hormone replacement (HRT, n = 12), selective estrogen r...

journal_title：International journal of sports medicine

authors： Phillips MD,Flynn MG,McFarlin BK,Stewart LK,Timmerman KL,Ji H

更新日期：2008-02-01 00:00:00

abstract：:The possible peripheral and/or central origin in the mechanisms responsible for day-time fluctuation in maximal torque of the triceps surae muscle were investigated with a special emphasis on antagonist muscle coactivation. Eleven healthy male subjects (physical education students) took part in this investigation. The...

journal_title：International journal of sports medicine

authors： Guette M,Gondin J,Martin A,Pérot C,Van Hoecke J

更新日期：2006-03-01 00:00:00

abstract：:The aim of the present study was to compare the iron status of 19 top-level soccer players and 20 male control subjects. All players showed no impairment of physical performance and had a dietary iron intake adequate to cover the iron losses. Serum iron, TIBC, % transferrin saturation and serum ferritin were not signi...

journal_title：International journal of sports medicine

authors： Resina A,Gatteschi L,Giamberardino MA,Imreh F,Rubenni MG,Vecchiet L

更新日期：1991-10-01 00:00:00

abstract：:The purpose of the present study was to assess the effects of 2-mercaptoacetate (MA), an inhibitor of hepatic fatty acid oxidation, on the metabolic and pancreatic hormone response to a prolonged (3 h) swimming exercise. All rats were first adrenodemedullated and were either submitted for 3 weeks to a normal (5% fat) ...

journal_title：International journal of sports medicine

authors： Lavoie JM,Bolduc L,Hélie R,Bergeron R,Lafond S,Cardin S,Trabelsi F,Yamaguchi N

更新日期：1994-02-01 00:00:00

abstract：:Meniscocapsular separations are often seen in knees with other intra-articular pathology. The consequences of these tears with regard to knee contact mechanics are currently unknown, and the biomechanical advantages of repair have not been measured. We hypothesize that tears to the meniscocapsular junction will cause ...

journal_title：International journal of sports medicine

authors： Dugas JR,Barrett AM,Beason DP,Plymale MF,Fleisig GS

更新日期：2015-06-01 00:00:00

abstract：:The aim of the present study was to investigate the relationships between heart rate variability (HRV) changes and both training variations and performances in elite swimmers. A secondary purpose was to measure catecholamine urinary excretion in elite swimmers to validate the HRV indices of sympathetic activity during...

journal_title：International journal of sports medicine

authors： Atlaoui D,Pichot V,Lacoste L,Barale F,Lacour JR,Chatard JC

更新日期：2007-05-01 00:00:00

abstract：:This investigation evaluated the effects of beverage carbonation and carbohydrate (CHO) content on fluid replacement following exercise/thermal dehydration. On four occasions separated by at least 7 days, eight healthy men cycled at 50% of VO2max in a hot environmental chamber (40 degrees C, 40% relative humidity) unt...

journal_title：International journal of sports medicine

authors： Lambert CP,Costill DL,McConell GK,Benedict MA,Lambert GP,Robergs RA,Fink WJ

更新日期：1992-05-01 00:00:00

abstract：:Intense exercise promotes long-term gains in cognitive functions. On the other hand, intense exercise may result in acute effects not clearly determined for cognitive performance. A condition of stochastic intensity ranging from moderate to maximal efforts is part of sports like cycling, in which cognitive integrity i...

journal_title：International journal of sports medicine

authors： Kunzler MR,Carpes FP

更新日期：2020-06-29 00:00:00

abstract：:The purpose of this randomized controlled trial was to determine the effects of an 8-week (aerobic+strength) exercise training program (3 sessions/week) on the circulating cytokine levels of breast cancer survivors. We randomly allocated 16 female survivors of breast cancer (mean±SD age: 50±5 years) to an intervention...

journal_title：International journal of sports medicine

authors： Gómez AM,Martínez C,Fiuza-Luces C,Herrero F,Pérez M,Madero L,Ruiz JR,Lucia A,Ramírez M

更新日期：2011-06-01 00:00:00

abstract：:We aimed to describe the changes in footprint characteristics after 2 types of resistance training sessions performed at different intensities. 18 young subjects (8 men and 10 women) volunteered for the study. All of them performed 2 different resistance training sessions, one with light loads (LS) and the other with ...

journal_title：International journal of sports medicine

authors： Jimenez-Ormeño E,Aguado X,Delgado-Abellan L,Mecerreyes L,Alegre LM

更新日期：2011-08-01 00:00:00

abstract：:The development of intermittent endurance capacity, its underlying mechanisms and role in reaching professional level in soccer was investigated. The sample included 130 talented youth soccer players aged 14-18, who became professional (n = 53) or non-professional (n = 77) players in adulthood. In total 229 Interval S...

journal_title：International journal of sports medicine

authors： Roescher CR,Elferink-Gemser MT,Huijgen BC,Visscher C

更新日期：2010-03-01 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：:This study evaluated the respiratory effects of a single dive in children. Eighteen young divers and 18 controls participated in our study (age range: 9 - 13 years). Volumes and expiratory flow rates were measured 20 minutes before and 10 minutes after one air dive (3 meters, 25 minutes). Before the dive, no differenc...

journal_title：International journal of sports medicine

authors： Lemaître F,Tourny-Chollet C,Hamidouche V,Lemouton MC

更新日期：2006-11-01 00:00:00

abstract：:The purpose of this study was to evaluate the accuracy and the repeatability of a new running computer system (RS800sd, Polar, Kempele, Finland) which included the measurement of running speed (RS) and stride rate (SR). Eight well-trained triathletes participated in this study. First, they completed an incremental con...

journal_title：International journal of sports medicine

authors： Hausswirth C,Le Meur Y,Couturier A,Bernard T,Brisswalter J

更新日期：2009-05-01 00:00:00

abstract：:Barefoot and minimal footwear running has led to greater interest in the biomechanical effects of different types of footwear. The effect of running footwear on dynamic stability is not well understood. The purpose of this study was to compare dynamic stability and impact loading across 3 footwear conditions; barefoot...

journal_title：International journal of sports medicine

authors： Bowser BJ,Rose WC,McGrath R,Salerno J,Wallace J,Davis IS

更新日期：2017-06-01 00:00:00