Is EMG of the lower leg dependent on weekly running mileage?

abstract：:The aim of this study was: i) to compute an energy balance of a slalom kayak competition by measuring the percentage contributions of the aerobic and anaerobic energy sources to total metabolic power (E(tot)); and ii) to compare these data with those obtained, on the same subjects, over a flat-water course covered at ...

journal_title：International journal of sports medicine

authors： Zamparo P,Tomadini S,Didonè F,Grazzina F,Rejc E,Capelli C

更新日期：2006-07-01 00:00:00

abstract：:We investigated the protective effect of Erythropoietin (EPO) analogue rHuEPO on renal injury induced by acute exhaustive exercise in the rat. Rats were randomly allocated to one of 3 groups: normal control (C), exhaustive exercise test (ET) and EPO pre-treatment (rHuEPO 2 000 U/kg) plus ET (EPO+ET). Compared with con...

journal_title：International journal of sports medicine

authors： Lin X,Qu S,Hu M,Jiang C

更新日期：2010-12-01 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 hind limbs of mice were immobilized with plaster cast for different periods of time, and the atrophy of the anterior tibial muscle was examined by measuring fiber cross sections. In a second series of experiments, mice were trained on a treadmill before and after immobilization. The most pronounced decrease in fib...

journal_title：International journal of sports medicine

authors： Appell HJ

更新日期：1986-02-01 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：:Quadriceps atrophy and weakness can persist for years after anterior cruciate ligament reconstruction (ACLR). We evaluated the effectiveness of a home-based blood flow restriction (BFR) exercise program to increase quadriceps size and strength several years after ACLR. Nine adults with ACLR (5±2 yrs post-surgery, ≤90%...

journal_title：International journal of sports medicine

authors： Kilgas MA,Lytle LLM,Drum SN,Elmer SJ

更新日期：2019-09-01 00:00:00

abstract：:Postexercise proteinuria has been observed in healthy adults but there was a need for information in young individuals. Boys and girls (n = 170) from 6 to 18 years of age were submitted to maximal exercise by the 20-meter shuttle run test. Urine collection was made prior to and 30 min after completion of the run. Tota...

journal_title：International journal of sports medicine

authors： Poortmans JR,Geudvert C,Schorokoff K,De Plaen P

更新日期：1996-08-01 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：:We have studied the effect of exercise on the percentage of free plasma estradiol 17-beta (E2) and testosterone (T) in 13 untrained (UT) and 8 trained (marathon runners, MR) eumenorrheic women. All women performed a standardized bicycle ergometer (UT) or treadmill (MR) test in the follicular and luteal phases of their...

journal_title：International journal of sports medicine

authors： Keizer HA,Beckers E,de Haan J,Janssen GM,Kuipers H,van Kranenburg G,Geurten P

更新日期：1987-12-01 00:00:00

abstract：:500 and 69 male former elite athletes and 319 male controls completed a health questionnaire in 1985 and in 1995. Register data on the subjects were also collected. Subjects were aged 65 years or less and had no history of hypertension in 1985, and they had been healthy at the age of 20 years. The athletes were groupe...

journal_title：International journal of sports medicine

authors： Hernelahti M,Kujala UM,Kaprio J,Sarna S

更新日期：2002-04-01 00:00:00

abstract：:The purpose of this investigation was to determine the time course and magnitude of learning effects associated with repeated maximum cycling power tests and to determine if cycle-trained men exhibit different learning effects than active men who are not cycle-trained. Cycle-trained (N = 13) and active men (N = 35) pe...

journal_title：International journal of sports medicine

authors： Martin JC,Diedrich D,Coyle EF

更新日期：2000-10-01 00:00:00

abstract：:The aim of this study was to compare the maximal lactate steady state (MLSS) and ventilatory threshold (VT) under different environments (TEMP: 22°C; and HOT: 40°C; 50% RH). 8 male subjects (age 23.9±2.4 years, body mass 75.9±7.3 kg and VO2(max) 47.8±4.9 mL·kg(-1)·min(-1)) performed a series of tests to determine the ...

journal_title：International journal of sports medicine

authors： de Barros CL,Mendes TT,Mortimer LÁ,Simões HG,Prado LS,Wisloff U,Silami-Garcia E

更新日期：2011-10-01 00:00:00

abstract：:Male (n = 9) and female (n = 8) collegiate cross-country runners were studied during a training session to determine the amount of iron lost in the sweat. Sweat samples were collected from the arm using polyethylene bags. Total sweat loss was determined by weighing subjects before and after the runs. Average time of s...

journal_title：International journal of sports medicine

authors： Lamanca JJ,Haymes EM,Daly JA,Moffatt RJ,Waller MF

更新日期：1988-02-01 00:00:00

abstract：:This study was undertaken to assess whether ventilatory anaerobic threshold (T vent) reflected endurance capacity (EC) in sports medical control. Fifteen subjects performed two cycle ergometer tests. The first was a maximal exercise test, which consisted of increasing the load 20 W/min until exhaustion. During this te...

journal_title：International journal of sports medicine

authors： Vago P,Mercier J,Ramonatxo M,Prefaut C

更新日期：1987-06-01 00:00:00

abstract：:The purpose of this study was to evaluate the effect of using different mathematical models to describe the relationship between treadmill running speed and time to exhaustion. All models generated a value for an aerobic parameter (critical speed; S (critical)). 35 university students performed 5-7 constant-speed 0%-s...

journal_title：International journal of sports medicine

authors： Hill DW,Vingren JL,Nakamura FY,Kokobun E

更新日期：2011-07-01 00:00:00

abstract：:Fluid-regulating hormones [arginine vasopressin (AVP) and aldosterone] as well as electrolytes, plasma volume (PV), and plasma proteins were studied in 16 well-trained male amateur runners (mean age 31.8 years) before t0), immediately after (t1), and 60 min (t2) and 22 h (t3) after a marathon run. Immediately after th...

journal_title：International journal of sports medicine

authors： Röcker L,Kirsch KA,Heyduck B,Altenkirch HU

更新日期：1989-08-01 00:00:00

abstract：:The effect of strenuous joint loading on the metabolism of articular cartilage in man is not known. The development of a non-invasive immunoassay for the assessment of the catabolism of cartilage aggrecan has enabled us to quantify keratan sulfate (KS), a component of aggrecan, in the serum of fifteen male marathon ru...

journal_title：International journal of sports medicine

authors： Sweet MB,Jakim I,Coelho A,Becker PJ,Thonar EJ

更新日期：1992-05-01 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 aim of this study was to determine long term changes in shoulder and elbow joints of former elite javelin throwers. Twenty-one elite javelin throwers were examined at an average of 19 years after the end of their high performance phase. Mean age at examination was 50 years. Functional assessment of both shoulders ...

journal_title：International journal of sports medicine

authors： Schmitt H,Hansmann HJ,Brocai DR,Loew M

更新日期：2001-05-01 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 purpose of this study was to establish the validity of a 90-s all-out test for the estimation of maximal oxygen uptake (V.O (2max)) and submaximal aerobic ability as represented by critical power. We hypothesized that the fall in power output by the end of the 90-s all-out test (end power) would represent the exha...

journal_title：International journal of sports medicine

authors： Brickley G,Dekerle J,Hammond AJ,Pringle J,Carter H

更新日期：2007-05-01 00:00:00

abstract：:This study examined the time course of adaptions in insulin sensitivity (IS) in adolescent boys after acute high-intensity interval exercise (HIIE) and moderate-intensity exercise (MIE). Eight boys (15.1±0.4 y) completed three 3-day experimental trials in a randomised order: 1) 8×1 min cycling at 90% peak power with 7...

journal_title：International journal of sports medicine

authors： Cockcroft EJ,Williams CA,Weaver H,O'Connor A,Jackman SR,Armstrong N,Barker AR

更新日期：2017-11-01 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：:To determine the adaptations of the autonomic nervous system in the control of heart rate and blood pressure induced by endurance training, 10 competitive cyclists aged 27 +/- 7 years and 10 age-, weight- and height-matched sedentary controls were subjected to Power Spectral Analysis of the RR interval and of blood pr...

journal_title：International journal of sports medicine

authors： Macor F,Fagard R,Amery A

更新日期：1996-04-01 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：:Intermittent pneumatic compression (IPC) has gained rapid popularity as a post-exercise recovery modality. Despite its widespread use and anecdotal claims for enhancing muscle recovery there is no scientific evidence to support its use. 10 healthy, active males performed a strenuous bout of eccentric exercise (3 sets ...

journal_title：International journal of sports medicine

authors： Cochrane DJ,Booker HR,Mundel T,Barnes MJ

更新日期：2013-11-01 00:00:00

abstract：UNLABELLED:The present study investigated the specific atmospheric conditions expected in Athens during the summer of 2004 in relation to the performance of elite athletes. DESIGN:Atmospheric pollution and weather data for the period April 16th to September 30th covering the entire greater Athens area and collected fr...

journal_title：International journal of sports medicine

authors： Flouris AD

更新日期：2006-02-01 00:00:00

abstract：:Mechanical efficiency of positive work (eta+) and elastic behavior of human skeletal muscles were investigated on a special sledge apparatus which allowed the use of the normal stretch-shortening cycle exercises. Twenty-five young men were investigated in a total of 92 exercise situations, in which the intensity of th...

journal_title：International journal of sports medicine

authors： Aura O,Komi PV

更新日期：1986-06-01 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：:Food restriction has a great impact on skeletal muscle mass by inducing muscle protein breakdown to provide substrates for energy production through gluconeogenesis. Genetic models of hyper-muscularity interfere with the normal balance between protein synthesis and breakdown which eventually results in extreme muscle ...

journal_title：International journal of sports medicine

authors： Matsakas A,Romanello V,Sartori R,Masiero E,Macharia R,Otto A,Elashry M,Sandri M,Patel K

更新日期：2013-03-01 00:00:00