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 progressively reduced weekly training volume by 85 %. Venous blood was drawn immediately before and after the first half-marathon. Subsequent samples were taken 7 days later, immediately before and after the second half-marathon. Serum samples were analysed for antioxidant capacity, urate concentration and creatine kinase activity (CK). The plasma concentration of malondialdehyde (MDA) was used as a marker of lipid peroxidation. There were no differences in running performance either between the first and second half-marathon within each group, or between groups (86.75 +/- 2.65 min and 87.67 +/- 2.87 min for the "normal training" group vs 85.62 +/- 2.81 min and 85.39 +/- 3.52 min for the "training taper" group). Serum antioxidant capacity and CK were increased over time (P < 0.05, ANOVA), with significant elevations after each half-marathon (P<0.025, t-test). Elevations in MDA attained significance for the first half-marathon (P < 0.05, t-test) when data for both subject groups were pooled. There were no differences in serum antioxidant capacity, or urate concentration between groups. Postexercise CK was lower following the training taper (149 +/- 22% baseline, for the training taper vs 269 +/- 55 % baseline for the normal training group, P<0.05, t-test). Despite evidence that the training taper reduced muscle damage, relative to the normal training group, half-marathon performance was not enhanced.
journal_name
Int J Sports Medjournal_title
International journal of sports medicineauthors
Child RB,Wilkinson DM,Fallowfield JLdoi
10.1055/s-2000-3778subject
Has Abstractpub_date
2000-07-01 00:00:00pages
325-31issue
5eissn
0172-4622issn
1439-3964journal_volume
21pub_type
杂志文章abstract：:Inhibition of adipose tissue lipolysis, leading to a reduced availability of non-esterified fatty acids for energy production in the active skeletal muscles, may be involved in the impairment of endurance exercise capacity after administration of a beta-adrenoceptor blocking agent. The effect of increasing the availab...
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-2007-1021137
更新日期：1993-01-01 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
pub_type： 杂志文章
doi：10.1055/s-2008-1025682
更新日期：1987-10-01 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
pub_type： 杂志文章,随机对照试验
doi：10.1055/s-0031-1283178
更新日期：2011-11-01 00:00:00
abstract：:Skeletal muscle, as a producer of glutamine, is important for lymphocytes, monocytes and macrophages. Exercise-induced muscle damage could burden the immune system by concurrently eliciting a local inflammatory response and decreasing glutamine availability. The aim of this study was to determine whether blood leukocy...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-971138
更新日期：1999-07-01 00:00:00
abstract：:Cardiac damage has recently been implicated in the aetiology of "exercise induced cardiac dysfunction". The humoral markers of cardiac damage that have been utilised to date are not sufficiently cardio-specific to investigate this hypothesis. The aim of the present study was to examine cardiac function following prolo...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2002-35069
更新日期：2002-10-01 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
pub_type： 杂志文章
doi：10.1055/s-0033-1353166
更新日期：2014-05-01 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
pub_type： 杂志文章
doi：10.1055/s-2008-1026093
更新日期：1982-11-01 00:00:00
abstract：:Because previous researchers have reported a reduced lactic acid production that accompanies a delayed or an absent ventilatory threshold (VTh) in water-based exercise, we hypothesized that the metaboreflex, activated by muscle acidosis, might be absent in fin swimming. This motor response, delaying the occurrence of ...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0030-1251993
更新日期：2010-08-01 00:00:00
abstract：:The purpose of this study was to measure and compare the total energy expenditure of the four competitive swimming strokes. Twenty-six swimmers of international level were submitted to an incremental set of 200-m swims (5 swimmers at Breaststroke, 5 swimmers at Backstroke, 4 swimmers at Butterfly and 12 swimmers at Fr...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2006-923776
更新日期：2006-11-01 00:00:00
abstract：:The aim of the present study was to identify anthropometric, physical, coordinative and ice-skating specific characteristics that discriminate young elite ice skaters from non-elite skaters and their non-skating peers. 32 skaters aged 9-12 years old (11 elites and 21 non-elites) voluntarily participated in the study. ...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0042-100280
更新日期：2016-06-01 00:00:00
abstract：:This study examined whether professional footballers with previous biceps femoris long head (BFLH) injury in the last 3-years present a smaller proximal aponeurosis (Apo-BFLH) size compared to footballers with no previous injury. We examined the Apo-BFLH and BFLH size using magnetic resonance imaging and tested the kn...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/a-1028-7322
更新日期：2020-07-01 00:00:00
abstract：:The relationships between perceived exertion and the physiological variables oxygen uptake (VO2), heart rate (HR) and blood lactate concentration (HLa) were studied in tethered swimming. Seven male and ten female subjects swam at five submaximal intensities. The degree of perceived exertion was measured both on the ca...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-973025
更新日期：1995-08-01 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
pub_type： 杂志文章
doi：10.1055/s-0043-103090
更新日期：2017-06-01 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：:The circulation of blood during upright exercise involves a two-pump system, a central cardiac pump and a peripheral pump responsible for systemic venous return. Axiomatically, the function of the two pumps must be equal, and certain evidence suggests that the peripheral pump may "drive" the circulation during exercis...
journal_title：International journal of sports medicine
pub_type： 杂志文章,评审
doi：10.1055/s-2001-18526
更新日期：2001-11-01 00:00:00
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journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0034-1385864
更新日期：2015-01-01 00:00:00
abstract：:The purpose was to analyze the influence of oral contraceptive use on body composition and strength levels in trained women. Twenty-three resistance-trained women participated in this study (age=27.4±3.4 years; fat mass=28.0±5.0%; BMI=22.9±2.7 kg∙m-2). Subjects performed an 8-week non-linear resistance-training progra...
journal_title：International journal of sports medicine
pub_type： 临床试验,杂志文章
doi：10.1055/a-0985-4373
更新日期：2019-12-01 00:00:00
abstract：:The present study investigated the difference in blood glucose concentration (Glu) response during an incremental swimming test before and after a ten-week training period and verified whether blood glucose threshold (GT) could be determined in competitive swimmers. 7 elite male university swimmers participated in thi...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0031-1279778
更新日期：2011-11-01 00:00:00
abstract：:Seventeen healthy male volunteers participated in this study designed to compare arterial with both arterialized venous and venous lactate kinetics after short exercise. Blood samples drawn before, during, and after bicycle exercise were analyzed continuously for lactate. A mathematical function incorporating two expo...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-1024867
更新日期：1989-02-01 00:00:00
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journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-965067
更新日期：2007-11-01 00:00:00
abstract：:An in vitro method has been developed of cultivating anatomically intact articular cartilage (humeral head of dog) while excluding both bone tissue and other connective tissues with a condom, which controls changes in hydration and minimizes loss of proteoglycans. Compressive loading experiments were carried out with ...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-972661
更新日期：1997-08-01 00:00:00
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：:The total number of leucocytes, T lymphocyte subsets, mitogen induced proliferation of lymphocytes, Il-2 generation, adherence capacity and chemiluminescence of granulocytes were measured and a leukergy test performed in fifteen young cyclists. The investigations were carried out at rest at the beginning of a training...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-1021067
更新日期：1994-08-01 00:00:00
abstract：:The electromyographic (EMG) activity of seven muscles of the trunk and lower extremity in five male masters level ski racers during a slalom turn in both alpine skiing and in-line skating was recorded using a telemetry system. Measurements were made on separate testing days using slopes commonly used in each activity ...
journal_title：International journal of sports medicine
pub_type： 杂志文章,评审
doi：10.1055/s-2007-971943
更新日期：1998-10-01 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
pub_type： 杂志文章
doi：10.1055/s-2007-1021279
更新日期：1992-05-01 00:00:00
abstract：:The study was performed on healthy volunteers subjected to submaximal physical exercise (75% VO2max). Activities of catalase (CT) (EC 1.11.1.6), glutathione peroxidase (GPO) (EC 1.11.1.9), superoxide dismutase (ZnCu-SOD) (EC 1.15.1.1) and malonyldialdehyde (MDA) concentration in blood platelets before and after physic...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-1024655
更新日期：1991-02-01 00:00:00
abstract：:Two well-trained speed-skaters were subjected to a biomechanical analysis incorporating push-off forces, cinematographic data, and link segment modeling. To gain knowledge on the backgrounds on technique and performance in speed-skating, the muscle coordination was studied by EMG and muscle contraction velocities. In ...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2008-1025688
更新日期：1987-12-01 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
pub_type： 临床试验,杂志文章
doi：10.1055/s-2007-972876
更新日期：1996-08-01 00:00:00
abstract：:We tested the hypothesis that time course of O (2) uptake (VO (2)) measured during a supramaximal exercise performed in the field is driven to maximal oxygen uptake (VO (2max)). On an outdoor track, five middle-distance male runners first performed a test to determine VO (2max) and a supramaximal 800-m running test at...
journal_title：International journal of sports medicine
pub_type： 临床试验,杂志文章
doi：10.1055/s-2004-820998
更新日期：2005-05-01 00:00:00
abstract：:The purpose of this study was to determine whether a player's physical impairment or activity profile was related to the amount of thermal strain experienced during wheelchair rugby match play. 17 elite wheelchair rugby players played a competitive match, whilst activity profiles, measures of core and skin temperature...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0042-121263
更新日期：2017-03-01 00:00:00
