Abstract：
:We hypothesized that a bout of high or low volume eccentric exercise would protect against muscle damage following a subsequent high volume bout and that adaptation would be attributable to neural changes, independent of the initial exercise volume. Sixteen males performed either 45 (ECC45) or 10 (ECC10) maximal eccentric contractions using the elbow flexors, followed by an ECC45 bout 2 weeks later. Damage markers were measured for the following 96 h; EMG and work done during the first 10 eccentric contractions were also recorded. CK, soreness, and decrements in MVC and range of motion (ROM) were greater in bout 1 than bout 2 (p < 0.01). Soreness, MVC and ROM were greater after the initial ECC45 bout compared to the initial ECC10 bout and the repeated bouts of ECC45 exercise in both groups (p < 0.01). Median frequency decreased from bout 1 to bout 2 (p < 0.001), no differences between groups were observed. An ECC45 bout of maximal eccentric exercise causes more initial damage than an ECC10 bout of maximal eccentric exercise, although both confer protection from subsequent ECC45 bouts of maximal eccentric contractions, which are attributable, at least in part, to a shift in the frequency content of EMG.
journal_name
Int J Sports Medjournal_title
International journal of sports medicineauthors
Howatson G,Van Someren K,Hortobágyi Tdoi
10.1055/s-2007-964866subject
Has Abstractpub_date
2007-07-01 00:00:00pages
557-63issue
7eissn
0172-4622issn
1439-3964journal_volume
28pub_type
杂志文章abstract：:The purpose of this randomized cross-over study was to investigate the effects of a 4-min long, 2-mm vertically-vibrating vibration-exercise on muscle performance and body balance in healthy subjects. Sixteen volunteers (eight men and women aged 18-35 years) underwent both the 4-min vibration- and sham-interventions i...
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-2002-33148
更新日期：2002-07-01 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：: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
pub_type： 杂志文章
doi：10.1055/s-2007-972598
更新日期：1997-02-01 00:00:00
abstract：:Aortic elastic properties are important determinants of left ventricular function. The aim of this study was to determine left ventricular diastolic function and aortic distensibility in endurance athletes. Thirty male runners and thirty age-matched healthy male controls took part in the study. All subjects underwent ...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2004-820956
更新日期：2005-04-01 00:00:00
abstract：:In 1988 Segura and Ventura (14) reported that 1.2 g of L-Tryptophan (L-TRY) supplementation increased total exercise time by 49.4% when the subjects were running at 80% of maximal oxygen uptake (VO2max). In human performance research, acute improvements of that category are rather uncommon. Both for this reason and be...
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-2007-1021302
更新日期：1992-08-01 00:00:00
abstract：:Wasted left ventricular effort (∆Ew) refers to work required of the left ventricle to eject blood that does not result in increased stroke volume and is related to left ventricular hypertrophy. Literature shows that men and women have differing ventricular and vascular responses to and following exercise. Our purpose ...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0032-1329990
更新日期：2013-09-01 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
pub_type： 杂志文章
doi：10.1055/s-0034-1398656
更新日期：2015-06-01 00:00:00
abstract：:This prospective experimental study aimed to compare effects of 3 different home-based postoperative respiratory muscle training protocols - inspiratory, expiratory and combined, in the patients' postoperative recovery, regarding safety and respiratory muscle function, pulmonary function, physical fitness, physical ac...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/a-1096-0913
更新日期：2020-06-01 00:00:00
abstract：:Single outcomes of standard isokinetic dynamometry tests do not discern between various muscle mechanical capacities. In this study, we aimed to (1) evaluate the shape and strength of the force-velocity relationship of knee extensors, as observed in isokinetic tests conducted at a wide range of angular velocities, and...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0043-113043
更新日期：2017-09-01 00:00:00
abstract：:The frequency of sister chromatid exchanges (SCE) in the peripheral blood lymphocytes of eighteen healthy old women with 88 style Taichiquan exercise was studied. When compared with eighteen old women without exercise, the training group showed a decreased frequency of SCE in cultured peripheral blood lymphocytes at r...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：
更新日期：1990-04-01 00:00:00
abstract：:We describe the metabolic changes in the blood that appeared during a maximal 400-m swimming test in 7 male swimmers by Fourier-transform infrared spectrometry (FT-IR spectrometry). A 400-m test (255.9 +/- 6.8 s) was performed during which stroke frequency and time to complete each pool distance were recorded. In thre...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2003-40707
更新日期：2003-07-01 00:00:00
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journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0031-1291232
更新日期：2012-04-01 00:00:00
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journal_title：International journal of sports medicine
pub_type： 杂志文章,随机对照试验
doi：10.1055/s-0031-1271698
更新日期：2011-09-01 00:00:00
abstract：:Climbing Mount Everest needs an acclimatization period of 3 to 4 weeks between 3000 and 6000 m. In order to reduce this period of time spent in dangerous conditions, an experience of pre-acclimatization was performed with 5 elite alpinists (4 male, 1 female), aged 30 +/- 4 yrs (mean +/- SD), before their attempt to cl...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-1024644
更新日期：1992-10-01 00:00:00
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journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0034-1382017
更新日期：2015-01-01 00:00:00
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journal_title：International journal of sports medicine
pub_type： 临床试验,杂志文章
doi：10.1055/s-2003-39082
更新日期：2003-04-01 00:00:00
abstract：:During an exhaustive graded bicycle spiroergometer test, several arterial blood samples were taken from six type I diabetics and seven normal controls for determination of catecholamines and parameters of carbohydrate and lipid metabolism. In both groups during exercise, glucose remained unchanged, and lactate associa...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2008-1026021
更新日期：1983-05-01 00:00:00
abstract：:Bike shock absorption systems reduce the energy variation induced by terrain irregularities, leading to a greater comfort. However, they may also induce an increase in energy expenditure for the rider. More specifically, cross-country racers claim that rear shock absorption systems generate significant energy loss. Th...
journal_title：International journal of sports medicine
pub_type： 临床试验,杂志文章
doi：10.1055/s-2001-16242
更新日期：2001-08-01 00:00:00
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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
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journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2000-3785
更新日期：2000-07-01 00:00:00
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journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-1024625
更新日期：1992-10-01 00:00:00
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journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/a-1114-6170
更新日期：2020-06-29 00:00:00
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journal_title：International journal of sports medicine
pub_type： 杂志文章,meta分析
doi：10.1055/s-2007-972670
更新日期：1997-10-01 00:00:00
abstract：:The objective of our study was to evaluate the effect of taping on the dynamic postural stability during a jump landing protocol in subjects with chronic ankle instability (CAI). For this purpose, 28 subjects with CAI performed a sagittal and frontal plane landing task in a non-taped and taped condition. As main outco...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0034-1385884
更新日期：2015-04-01 00:00:00
abstract：:As people age, they experience a decline in immune responses. Unusually heavy acute or chronic exercise could increase the risk of upper respiratory tract infection (URTI) whereas regular moderate physical activity may reduce URTI symptomatology. The purpose of the present study was to determine whether an aerobic exe...
journal_title：International journal of sports medicine
pub_type： 杂志文章,随机对照试验
doi：10.1055/s-0029-1237389
更新日期：2009-12-01 00:00:00
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journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-972900
更新日期：1996-11-01 00:00:00
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journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2003-45256
更新日期：2004-04-01 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
pub_type： 杂志文章
doi：10.1055/s-2008-1025751
更新日期：1986-06-01 00:00:00
abstract：:It has been shown that bouts of high-intensity exercise may reduce subcutaneous adipose tissue more than low-intensity exercise. The aim of the present study was to examine if a discontinuous training protocol is more successful in reducing adipose tissue than a continuous endurance training protocol. Fourteen untrain...
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-2001-15643
更新日期：2001-07-01 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
pub_type： 临床试验,杂志文章
doi：10.1055/s-2008-1025829
更新日期：1985-06-01 00:00:00
