Abstract：
:Screening for cardiac health should involve relevant parameters or indices that are easy and inexpensive to obtain. Various cardiac adaptation mechanisms develop during regular exercise that are affected by many factors, and these are reflected on a surface electrocardiogram. QT dispersion has been considered a surrogate for heterogeneity of repolarization, leading to ventricular arrhythmias. We compared QT parameters between athletes and sedentary subjects. A total of 225 men were assessed, comprising a group of professional soccer players and sedentaries. Each subject underwent supine 12-lead electrocardiographic examinations and exercise testing by ergospirometry. QT parameters were taken at rest and at peak exercise. Peak oxygen consumption was considerably higher in the athletes than in the controls (59.3 +/- 5.6 vs. 44.3 +/- 2.4 ml/kg/min, mean +/- SD, p < 0.001). QT parameters at rest: There were significant differences in heart-rate-corrected rest maximal QT duration (413.9 +/- 50.5 vs. 445.3 +/- 45.7 ms, p < 0.001) and in heart-rate-corrected rest minimum QT duration (380.5 +/- 51.2 vs. 409.5 +/- 46.7 ms, p < 0.001). QT parameters at peak exercise: maximal QT duration at peak exercise (253.9 +/- 20.8 vs. 261.7 +/- 26.2, p = 0.02), QT dispersion at peak exercise (25.2 +/- 9.1 vs. 29.5 +/- 15.8 ms, p = 0.04), heart-rate-corrected QT dispersion at peak exercise (44.6 +/- 16.4 vs. 52.6 +/- 28.3 ms, p = 0.03) differed significantly between professional soccer players and controls. QT dispersion and corrected QT dispersion at peak exercise are lower in athletes than in controls. Athletes and other subjects identified with a long QT interval should be examined at regular intervals.
journal_name
Int J Sports Medjournal_title
International journal of sports medicineauthors
Kasikcioglu E,Kayserilioglu A,Yildiz S,Akhan H,Cuhadaroglu Cdoi
10.1055/s-2003-45256subject
Has Abstractpub_date
2004-04-01 00:00:00pages
177-81issue
3eissn
0172-4622issn
1439-3964journal_volume
25pub_type
杂志文章abstract：:Cough and chest wall pain at high altitude have only received passing mention in the medical literature. Increased minute ventilation of cold dry air at very high altitude is likely to cause airway irritation. This in turn may result in airway drying, mucus production, postnasal drip from vasomotor rhinitis, and bronc...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-971908
更新日期：1998-04-01 00:00:00
abstract：:To test the effects of different modes of exercise on indices of protein catabolism, eight adult males on a meat-free diet performed single 60-min bouts of concentric and eccentric cycle ergometer exercise in two 7-day periods. Although the absolute intensities for the two exercise bouts were similar, VO2 averaged 70%...
journal_title：International journal of sports medicine
pub_type： 临床试验,杂志文章
doi：10.1055/s-2008-1025900
更新日期：1984-08-01 00:00:00
abstract：:A field test for the determination of anaerobic threshold (AT) based on the relationship between work intensity and heart rate was previously developed in adult runners (4) and then applied in various sports activities (3, 5, 9). In the current study the same relationship between running speed (S) and heart rate (HR) ...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-1024924
更新日期：1989-10-01 00:00:00
abstract：:Neuromuscular activity of the lower leg is dependent on the task performed, speed of movement and gender. Whether training volume influences neuromuscular activity is not known. The EMG of physically active persons differing in running mileage was analysed to investigate this. 55 volunteers were allocated to a low (LM...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0031-1286250
更新日期：2012-01-01 00:00:00
abstract：:The aims were to investigate the plasticity of the myosin heavy chain (MHC) phenotype following neuromuscular electrical stimulation (NMES) and to assess the correlation between MHC isoform distribution and muscle fibre conduction velocity (MFCV).14 men were subjected to 24 sessions of quadriceps NMES. Needle biopsies...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0032-1321799
更新日期：2013-06-01 00:00:00
abstract：:Adequate reliability studies of knee flexion and extension are currently available for isokinetic measurements, but not for the shoulder joint. For this reason, this study examines the variability (%) in the determination of peak torque (PT) and the angle at peak torque (AP) in the test-retest procedure. Differentiati...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-1021106
更新日期：1994-01-01 00:00:00
abstract：:Circulatory leukocytes vary significantly in response to acute bouts of exercise. However, little is known concerning the adaptability of this response to chronic intense exercise training. We investigated the circulating leukocytic response to acute exercise in trained athletes during a 28-day intense exercise traini...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-1021252
更新日期：1992-02-01 00:00:00
abstract：:We have reviewed carbohydrate metabolism in skeletal muscle with an emphasis on recent information. In this review a significant number of points have been made. These are summarized below. 1. CP and glycogen are concomitantly metabolized during short-term (less than or equal to 10 s) intense exercise. 2. Both epineph...
journal_title：International journal of sports medicine
pub_type： 杂志文章,评审
doi：10.1055/s-2007-1024932
更新日期：1989-12-01 00:00:00
abstract：:Training effects on peak oxygen consumption (VO2), specific to the mode of movement, are well-known in exercise training of young, healthy adults. However, these specific training effects were never studied in patients with coronary artery disease, but may be important in the evaluation of training effects of cardiac ...
journal_title：International journal of sports medicine
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1055/s-2007-971930
更新日期：1998-07-01 00:00:00
abstract：:The study aimed to verify possible associations between game-play running performance and outcomes derived from fitness (running) tests in female futsal players. Sixteen women professional elite futsal players from a 1st division league team (19.2±2 years-old, 4.3±2.1 years of experience) participated. Firstly, a grad...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/a-1202-1496
更新日期：2021-01-01 00:00:00
abstract：:Between the years 1977 and 1984, four javelin throwers with a stress fracture of the olecranon were seen and treated. In one patient, acute painful dislocation of the fracture occurred during a competitive throw. Two patients had stress fracture of the tip. The fracture treated conservatively healed in 18 months. The ...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2008-1025760
更新日期：1986-08-01 00:00:00
abstract：:The purpose of the present study was to test the hypothesis that large increases in blood lactate concentration ([La] (b)) and/or body temperature may occur during an endurance training on a rowing ergometer and disrupt training. The influence of an increase in air convection on the capacity to perform a prolonged exe...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-965067
更新日期：2007-11-01 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
pub_type： 杂志文章
doi：10.1055/s-2008-1026031
更新日期：1983-08-01 00:00:00
abstract：:This study was undertaken to evaluate the effects of the supine posture, immersion, and swimming on hormones involved in the regulation of hydrosaline equilibrium. Plasma levels of atrial natriuretic peptide (ANP), arginine vasopressin (AVP), plasma renin activity (PRA), and aldosterone (ALDO) were measured by radioim...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-1024933
更新日期：1989-12-01 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
pub_type： 临床试验,杂志文章
doi：10.1055/s-2004-830450
更新日期：2005-01-01 00:00:00
abstract：:The ratio between the amount of hemoglobin in the mature erythrocyte population and the reticulocytes (RBCHb:RetHb ratio) has previously been suggested as a marker to screen for EPO-abuse. We speculated that the reinfusion of blood would lead to a marked increase in this ratio, making it a valuable parameter in the sc...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0028-1105938
更新日期：2009-04-01 00:00:00
abstract：:To investigate the effect of a transition program of simulated barefoot running (SBR) on running kinematics and foot-strike patterns, female recreational athletes (n=9, age 29 ± 3 yrs) without SBR experience gradually increased running distance in Vibram FiveFingers SBR footwear over 12 weeks. Matched controls (n=10, ...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0033-1353215
更新日期：2014-05-01 00:00:00
abstract：:This study was designed to assess the effects of Ramadan-intermittent-fasting (RIF) and time-of-day on muscle power and fatigue during the Wingate test. In a randomized design, 10 football players completed a Wingate test at 07:00 and 17:00 h on 3 different occasions: one week before Ramadan (BR), the second week of R...
journal_title：International journal of sports medicine
pub_type： 杂志文章,随机对照试验
doi：10.1055/s-0031-1286251
更新日期：2012-02-01 00:00:00
abstract：:Fitness, and specifically body composition of football referees requires attention in order to achieve the highest possible standards. The aim of the present study was to describe body composition of elite Spanish football referees over 11 years. Data from 2001 to 2012 pre-seasons were analyzed from a total of 470 ref...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0034-1398582
更新日期：2015-06-01 00:00:00
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journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-964989
更新日期：2007-10-01 00:00:00
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journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0034-1395590
更新日期：2015-10-01 00:00:00
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journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-972608
更新日期：1997-02-01 00:00:00
abstract：:This study evaluated the effect of ischemic preconditioning (IPC) on resistance exercise performance in upper limbs. After 12-RM load determination, 21 men attended 4 trials separated by 3 days in a randomized crossover design: IPC (4×5-min occlusion 220 mmHg/reperfusion 0 mmHg) in arms and in thighs, and SHAM (equal ...
journal_title：International journal of sports medicine
pub_type： 杂志文章,随机对照试验
doi：10.1055/s-0042-109066
更新日期：2016-09-01 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
pub_type： 杂志文章
doi：10.1055/s-2000-3778
更新日期：2000-07-01 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
pub_type： 杂志文章
doi：10.1055/s-2003-45231
更新日期：2004-01-01 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
pub_type： 杂志文章,评审
doi：10.1055/s-2007-971898
更新日期：1998-04-01 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
pub_type： 杂志文章,评审
doi：10.1055/s-0028-1112143
更新日期：2009-06-01 00:00:00
abstract：UNLABELLED:To define the respective roles of the periphery and central oxygen transport in the exercise limitation of heart transplanted patients (HTR), we compared 11 HTR (15.1 +/- 10.8 months after transplantation) to six age and weight matched normal controls (C), during an incremental exercise test (30 W/3 min step...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-972847
更新日期：1996-05-01 00:00:00
abstract：:The energy cost of the forms of locomotion discussed throughout this article is summarized in Table 9. This table, as well as the preceding sections of this article, are designed to provide a rather comprehensive and simple set of information for potential readers: medical doctors, who should be able to prescribe to t...
journal_title：International journal of sports medicine
pub_type： 杂志文章,评审
doi：10.1055/s-2008-1025736
更新日期：1986-04-01 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
pub_type： 临床试验,杂志文章
doi：10.1055/s-2007-972863
更新日期：1996-07-01 00:00:00
