EMG threshold determination in eight lower limb muscles during cycling exercise: a pilot study.

abstract：:This study compared physiological responses associated with exercise tolerance in girls (G) and women (W) of similar fitness and heat acclimatization level during exercise in a hot and humid outdoor environment (33.4 degrees C and 55.1 % RH; WBGT = 29.9 +/- 0.2 degrees C). Nine pre-menarcheal G (age = 11.3 yr) and nin...

journal_title：International journal of sports medicine

authors： Rivera-Brown AM,Rowland TW,Ramírez-Marrero FA,Santacana G,Vann A

更新日期：2006-12-01 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：:To determine the effects of widely varying amounts of cushioning upon vertical force (VF) parameters, ten male subjects, (mean weight = 68.0 kg) ran at a speed of 4.5 m . s-1 (6 min/mile pace) and contacted a Kistler force platform. Two shoes were tested: a hard one and a softer shoe that had 50% more cushioning as me...

journal_title：International journal of sports medicine

authors： Clarke TE,Frederick EC,Cooper LB

更新日期：1983-11-01 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：:Over the past 25 years sport climbing has developed from an elite extreme sport subculture pursued by few into a mainstream recreational sport enjoyed globally by climbers of all ages, climbing abilities, and with pre-existing health conditions. As the demands and grades of climbing difficulty have increased over this...

journal_title：International journal of sports medicine

authors： Kuepper T,Morrison A,Gieseler U,Schoeffl V

更新日期：2009-06-01 00:00:00

abstract：:The aim of the present study was to monitor the nutritional status of 9 Greek national top-level swimmers during a competitive season of eight months. The swimmers were assessed through recording of food and supplement intake, blood sampling, and anthropometry at four landmarks: in the beginning of the season (baselin...

journal_title：International journal of sports medicine

authors： Kabasakalis A,Kalitsis K,Tsalis G,Mougios V

更新日期：2007-09-01 00:00:00

abstract：:This study investigated the validity of the CSA activity monitor for assessment of the total amount of physical activity in adolescent athletes. Activity data were compared to data on daily energy expenditure and its derivatives measured by the doubly labeled water method. Seven athletes (speed skaters) with a mean ag...

journal_title：International journal of sports medicine

authors： Ekelund U,Yngve A,Sjöström M,Westerterp K

更新日期：2000-11-01 00:00:00

abstract：:We tested the hypothesis that the initial heart rate (HR) response at the onset of maximal handgrip contraction is altered after training. 17 volunteers (nine trained and eight controls) performed ten intermittent static handgrip contractions with maximal effort, alternating between 15-s contractions and 15-s pauses. ...

journal_title：International journal of sports medicine

authors： Hachiya T,Blaber AP,Aizawa S,Saito M

更新日期：2008-08-01 00:00:00

abstract：:Increasing exercise intensities will induce an increase in glycolytic flux. High glycolytic activity is associated with reduced fat oxidation rates and increased accumulation of lactate. Both lactate and hydrogen ions have been shown to be directly related to the decreased fat oxidation rates. The aim of the present s...

journal_title：International journal of sports medicine

authors： Achten J,Jeukendrup AE

更新日期：2004-01-01 00:00:00

abstract：UNLABELLED:Caffeine has many diverse physiological effects including central nervous system stimulation. Ventilatory threshold and a recently described heart rate variability threshold both have a relationship with autonomic control that could be altered by caffeine consumption. The purpose of this investigation was to...

journal_title：International journal of sports medicine

authors： Karapetian GK,Engels HJ,Gretebeck KA,Gretebeck RJ

更新日期：2012-07-01 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：: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：:Based on the importance of exercise and crucial role of liver in metabolism, the aim of this study was to determine whether the expression of peroxisome proliferator-activated receptor (PPAR)-α, γ and adiponectin receptor 2 in OLETF rat liver were altered in conjunction with improved metabolism with exercise training....

journal_title：International journal of sports medicine

authors： Zhang S,Liu Y,Li Q,Dong X,Hu H,Hu R,Ye H,Wu Y,Hu R,Li Y

更新日期：2011-08-01 00:00:00

abstract：:The purpose of this investigation was to determine the accuracy of the critical velocity (CV) test for predicting time to exhaustion (time limit = TL) during treadmill running. Ten adult males (mean +/- SD of age = 23 +/- 2 years) volunteered to perform a maximal treadmill test, a CV test, and five exhaustive treadmil...

journal_title：International journal of sports medicine

authors： Pepper ML,Housh TJ,Johnson GO

更新日期：1992-02-01 00:00:00

abstract：:This study aimed to describe injury/illness rates in ultratrail runners competing in a 65-km race to build a foundation for injury prevention and help race organizers to plan medical provision for these events. Prospectively transcribed medical records were analysed for 77 athletes at the end of the race. Number of in...

journal_title：International journal of sports medicine

authors： Vernillo G,Savoldelli A,La Torre A,Skafidas S,Bortolan L,Schena F

更新日期：2016-06-01 00:00:00

abstract：:Several studies have established that systemic sclerosis patients have a reduced exercise capacity when compared to healthy individuals. It is relevant to evaluate whether aerobic exercise in systemic sclerosis patients is a safe and effective intervention to improve aerobic capacity. Seven patients without pulmonary ...

journal_title：International journal of sports medicine

authors： Oliveira NC,dos Santos Sabbag LM,de Sá Pinto AL,Borges CL,Lima FR

更新日期：2009-10-01 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：: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 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：: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：:Volleyball players commonly complain of pain in the hypothenar area. Fatigue fracture of the pisiform bone is suggested as a cause of this sport incapacity. The diagnostic importance of oblique and axial X-ray views of the Wrist is demonstrated. Early treatment by immobilization for 6 weeks usually results in complete...

journal_title：International journal of sports medicine

authors： Israeli A,Engel J,Ganel A

更新日期：1982-02-01 00:00:00

abstract：:The aim of this study was to assess the hypothesis that water intake will accelerate cardiac vagal reactivation after a single session of upper-body resistance exercise. 13 healthy men (26.5±5.9 years) with previous experience in resistance training were enrolled. In visits 1 and 2, participants performed the one-repe...

journal_title：International journal of sports medicine

authors： Teixeira AL,Ramos PS,Marins JB,Ricardo DR

更新日期：2015-03-01 00:00:00

abstract：:Serum zinc was determined using atomic absorption spectrophotometry in 160 training athletes (57 females) in the morning at rest. In 23.3% of the male and 43% of the female athletes, serum Zn was lower than the limit accepted for the normal range (75 microgram/dl or 11.5 mumol/l). The average serum Zn (96.7 +/- 12.6 m...

journal_title：International journal of sports medicine

authors： Haralambie G

更新日期：1981-08-01 00:00:00

abstract：:This study aimed at investigating to what extent sauna-induced dehydration is effective to rapidly decrease body weight and whether this practice alters strength and/or explosive power (jump capacity) in healthy athletes. We also investigated whether the observed changes could be rapidly reversed through rehydration. ...

journal_title：International journal of sports medicine

authors： Gutiérrez A,Mesa JL,Ruiz JR,Chirosa LJ,Castillo MJ

更新日期：2003-10-01 00:00:00

abstract：:We investigated how inspiratory muscle training impacted respiratory and locomotor muscle deoxygenation during submaximal exercise with resistive inspiratory loading. 16 male cyclists completed 6 weeks of either true (n=8) or sham (n=8) inspiratory muscle training. Pre- and post-training, subjects completed 3, 6-min e...

journal_title：International journal of sports medicine

authors： Turner LA,Tecklenburg-Lund SL,Chapman R,Shei RJ,Wilhite DP,Mickleborough T

更新日期：2016-07-01 00:00:00

abstract：:The purpose of this investigation was to determine the effect of ambient temperature on the salivary immunoglobulin A (s-IgA) response to submaximal exercise. Nine adult males (x age +/- SD = 22 +/- 2 yrs) volunteered to perform an incremental treadmill test to exhaustion for the determination of VO2max and three 30-m...

journal_title：International journal of sports medicine

authors： Housh TJ,Johnson GO,Housh DJ,Evans SL,Tharp GD

更新日期：1991-10-01 00:00:00

abstract：:Here, we compared the maximal lactate steady state velocity (vMLSS) estimated from a single-visit protocol (v5×2000) to the traditional multi-day protocol (vMLSS). Furthermore, we determined whether there was a lactate steady state during the time limits (Tlim) at vMLSS or v5×2000. Eight runners completed a half marat...

journal_title：International journal of sports medicine

authors： Legaz-Arrese A,Carranza-García LE,Serrano-Ostáriz E,González-Ravé JM,Terrados N

更新日期：2011-11-01 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 influence of autonomic blockade (AB) on the left ventricular (LV) diastolic function at rest (R) and during bicycle exercise (EX) in eight endurance-trained (TR) and ten untrained subjects (UT). Two-dimensional and M-mode echocardiography at the parasternal long axis were performed at rest and duri...

journal_title：International journal of sports medicine

authors： Niess A,Roecker K,Mayer F,Heitkamp HC,Dickhuth HH

更新日期：1996-11-01 00:00:00

abstract：:The present study was designed to examine the effects of administration of a GABAergic agonist (Baclofen) on run-time to exhaustion in trained and untrained rats, and on some indicators of fatigue. Run-time to exhaustion on a treadmill set at a speed of 25 m.min-1 was significantly increased in both untrained (p < 0.0...

journal_title：International journal of sports medicine

authors： Abdelmalki A,Merino D,Bonneau D,Bigard AX,Guezennec CY

更新日期：1997-02-01 00:00:00