Abstract:
:This study investigated whether 4 weeks of daily supplementation with 500 or 1000 mg of Vitamin C and 500 or 1000 IU of Vitamin E could modify biochemical and ultrastructural indices of muscle damage following a 21 km run. Fifteen experienced male distance runners were divided into two groups (vitamin or placebo) and received supplementation for four weeks before completing the first 21 km run in as fast a time as possible. A four-week "washout" period followed before the subjects crossed over and received the alternate supplement for the next four weeks. They then completed a second 21 km run. Before, immediately after and 24 h after each run venous blood samples were taken and analysed for serum creatine kinase, myoglobin, malondialdehyde and vitamin C and E (before-samples only) concentrations. A subgroup of six subjects also had muscle biopsy (gastrocnemius) samples taken 24 h before and 24 h after each 21 km run, which were later analysed by electron microscopy. The two dosages of supplementation produced similar results, so a single vitamin group was formed for further analysis of results. Significant increases (p < 0.05) in creatine kinase and myoglobin, but not in malondialdehyde, were found post-run in both groups. However, no significant differences were found between the vitamin and placebo groups for creatine kinase, myoglobin and malondialdehyde concentrations recorded after the 21 km runs. A qualitative ultrastructural examination of pre-run muscle samples revealed changes consistent with endurance training, but little further change was seen after the 21 km run in either the vitamin or placebo groups. It was concluded that vitamin C and E supplementation (500 or 1000 mg or IU per day) for four weeks does not reduce either biochemical or ultrastructural indices of muscle damage in experienced runners after a half marathon.
journal_name
Int J Sports Medjournal_title
International journal of sports medicineauthors
Dawson B,Henry GJ,Goodman C,Gillam I,Beilby JR,Ching S,Fabian V,Dasig D,Morling P,Kakulus BAdoi
10.1055/s-2002-19273subject
Has Abstractpub_date
2002-01-01 00:00:00pages
10-5issue
1eissn
0172-4622issn
1439-3964journal_volume
23pub_type
临床试验,杂志文章,随机对照试验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::Declines in exercise capacity throughout an individual's life span can affect function and can ultimately limit the ability to perform activities of daily living. Along with these changes in exercise capacity and function, studies have reported age-associated changes in several parameters of immune status including de...
journal_title:International journal of sports medicine
pub_type: 杂志文章,评审
doi:10.1055/s-2007-972697
更新日期:1997-03-01 00:00:00
abstract::Forty-six male wheelchair basketball players performed a set of field tests to evaluate aerobic capacity (25 m shuttle run), anaerobic capacity (30s sprint), and six specific wheelchair basketball skills. Overall test-retest reliability (n = 20) ranged from r = 0.65 to r = 0.97. To study the validity (criterion relate...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-1999-9465
更新日期:1999-11-01 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
pub_type: 杂志文章
doi:10.1055/s-2008-1025726
更新日期:1986-02-01 00:00:00
abstract::The aim of this study was to test the validity and the reliability of the G-Cog which is a new BMX powermeter allowing for the measurements of the acceleration on X-Y-Z axis (250 Hz) at the BMX rear wheel. These measurements allow computing lateral, angular, linear acceleration, angular, linear velocity and the distan...
journal_title:International journal of sports medicine
pub_type: 杂志文章,随机对照试验
doi:10.1055/s-0032-1304639
更新日期:2013-11-01 00:00:00
abstract::Six successful members of the British Women's Lightweight Rowing Team were assessed before and after two-month (1990) and four-month (1991) periods of weight-reduction controlled by reduced caloric intake, while engaged in their normal physical training. Fat free mass (FFM) was calculated from body weight (BW) by util...
journal_title:International journal of sports medicine
pub_type: 临床试验,杂志文章
doi:10.1055/s-2007-1021090
更新日期:1994-11-01 00:00:00
abstract::Altitude exposure leads to considerable weight loss. The different hypotheses that have been put forward to explain this phenomenon are discussed reviewing the literature: 1) a primary decrease of food intake due to loss of appetite caused, directly or indirectly, by hypoxia, changes of menus, comfort and habits, 2) a...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2007-1024616
更新日期:1992-10-01 00:00:00
abstract::The aim of the present study was to compare the physiological responses when the crank rate was chosen spontaneously (Ts) or set at +/- 10% (T-10%, T+10%) of the freely chosen rate, during two upper body exercises: i) a sub-maximal test (T(SUB)) in which intensities ranged from 50 to 80% (118.4 +/- 10.2 to 189.5 +/- 1...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2007-971124
更新日期:1999-05-01 00:00:00
abstract::This study investigated the effects of marine phytoplankton supplementation on 1) perceived recovery and ground reaction forces in humans following a non-functional overreaching resistance-training program and 2) myogenic molecular markers associated with muscle cell recovery in a rat model. In the human trial, a 5-we...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/a-1320-1061
更新日期:2020-12-22 00:00:00
abstract::The first aim of this study was to verify the occurrence of the EMG threshold (EMG (Th)) in each of eight lower limb muscles (vastus lateralis [VL], vatus medialis [VM], rectus femoris [RF], semimembranosus [SM], biceps femoris [BF], gastrocnemius lateralis [GL] and medialis [GM], and tibialis anterior [TA]) during in...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2005-865787
更新日期:2006-06-01 00:00:00
abstract:PURPOSE:The modified Dmax method can accurately determine the second lactate threshold (LT2), which is valuable for predicting aerobic performance and prescribing exercise. The purpose of this study is to determine if the modified Dmax method can accurately find thresholds in VE (VT2), VCO2 (VCO2T), RER (RERT), and RR ...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-0043-125448
更新日期:2018-04-01 00:00:00
abstract::During an overhead throw, the gluteal muscle group stabilizes the lumbopelvic-hip complex (LPHC), leading to efficient energy transfer from the lower to upper extremity. It has been shown that LPHC instability can lead to throwing pathomechanics. The single leg squat has become a common assessment for LPHC stability, ...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/a-0577-3722
更新日期:2018-07-01 00:00:00
abstract::Studies of parental influence on children's physical activity have had different results. Parental effect on physical activity during adolescence is less studied, and three generation studies have not been carried out. The purpose of our study was to examine intra- and intergenerational associations of leisure time ph...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2007-972680
更新日期:1997-10-01 00:00:00
abstract::This randomized, double-blind, placebo-controlled study examined the influence of 6% carbohydrate ingestion on hormonal and lymphocyte proliferative responses (5 total samples over 9 hours) to 2.5 h of high-intensity running by 30 experienced marathon runners. The T-cell response differed between groups, with the plac...
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-2007-971962
更新日期:1998-11-01 00:00:00
abstract::In young elite athletes the influence of a sensorimotor training (SMT = balance training) on strength, jump height and spinal reflex excitability was compared with adaptations induced by strength training (ST). Seventeen athletes were randomly assigned to either a SMT or a ST group. Before and after 6 weeks of trainin...
journal_title:International journal of sports medicine
pub_type: 杂志文章,随机对照试验
doi:10.1055/s-2007-964996
更新日期:2007-12-01 00:00:00
abstract::The indirect identification of doping in sports can be performed by assessing athletes' hematological perturbations from the analysis of blood collected on different occasions. Because prosecution for doping based on this information requires expensive and time-consuming interpretation of blood analysis results by var...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/a-1019-7774
更新日期:2020-01-01 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::One hundred and three women who were habitual distance runners and 74 age-matched physically inactive women provided three-day diet records. Intergroup differences in intakes of energy nutrients, micronutrients, cholesterol and fiber were evaluated via analysis of variance and, to assess qualitative differences, via a...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2007-1024838
更新日期:1990-12-01 00:00:00
abstract::Recreational scuba diving is a sport of increasing popularity. Previous studies indicating subtle brain injury in asymptomatic divers imply a cumulative effect of minor neural insults in association with diving for professional and/or recreational purposes, over the long-term. This is the first study to investigate pu...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-0031-1284341
更新日期:2011-12-01 00:00:00
abstract::Endocrine and neuromuscular effects of prolonged strength training were investigated in 21 strength-trained male subjects during the course of a 24-week progressive strength training and during a subsequent detraining period of 12 weeks. Maximal isometric leg extensor force increased by 19% (P less than 0.001) during ...
journal_title:International journal of sports medicine
pub_type: 临床试验,杂志文章
doi:10.1055/s-2007-1025011
更新日期:1988-06-01 00:00:00
abstract::Phagocytic cells constitute the organism's first line of defence against external aggression. These cells carry out their non-specific defence function through what is known as the phagocytic process. This can be split up into several stages: adherence, chemotaxis, attachment, ingestion and killing of the foreign agen...
journal_title:International journal of sports medicine
pub_type: 杂志文章,评审
doi:10.1055/s-2007-1021133
更新日期:1994-10-01 00:00:00
abstract::This study examined the relationship between ratings of perceived exertion (RPE, CR-10), heart rate (HR), peak blood lactate (La peak), and immersion (IM) parameters in 17 elite synchronized swimmers performing 30 solo and duet routines during competition. All were video recorded (50 Hz) and an observational instrumen...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-0033-1353177
更新日期:2014-05-01 00:00:00
abstract::The purpose of this study was to determine whether preferred pedal rate (PPR) could be used as an index of cycling performance. Thirteen competitive cyclists cycled at PPR during a graded test and a supra-threshold constant power test (CPT). The results showed that PPR values reported in CPT were correlated to both pe...
journal_title:International journal of sports medicine
pub_type: 临床试验,杂志文章
doi:10.1055/s-2004-821022
更新日期:2005-06-01 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
pub_type: 杂志文章
doi:10.1055/s-0035-1569347
更新日期:2016-06-01 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::Spatio-temporal, metabolic and psychometric responses during and after a 400-m freestyle swim trial were investigated for gender and skill-level effects. Thirty-four men and women, 18 national and international competitors and 16 recreational swimmers, were compared. Mean speed, stroke rate (SR), and stroke length (SL...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2006-924208
更新日期:2007-02-01 00:00:00
abstract::The objectives of this study were to 1) continuously assess oxygen uptake during and after difficult sport rock climbing and 2) to evaluate the effects of active versus passive recovery on post-climbing blood lactate and hand grip strength. Fifteen expert rock climbers attempted to climb (i.e., red point lead) a 20 m ...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2000-302
更新日期:2000-04-01 00:00:00
abstract::Decreased ability to perform activities of daily living (ADLs) associated with deterioration in physical capacity are key determinants of the poor quality of life and loss of independence of patients with Alzheimer's disease (AD). The purpose of this study was to determine the effects of a 12-week training program (in...
journal_title:International journal of sports medicine
pub_type: 杂志文章,随机对照试验
doi:10.1055/s-2008-1038432
更新日期:2008-10-01 00:00:00
abstract::The purpose of this randomized controlled trial was to determine the effects of an 8-week (aerobic+strength) exercise training program (3 sessions/week) on the circulating cytokine levels of breast cancer survivors. We randomly allocated 16 female survivors of breast cancer (mean±SD age: 50±5 years) to an intervention...
journal_title:International journal of sports medicine
pub_type: 杂志文章,随机对照试验
doi:10.1055/s-0031-1271697
更新日期:2011-06-01 00:00:00
abstract:BACKGROUND:The purpose of this study was to examine some motor performance aspects of the unloaded lower extremity after Achilles tendon rupture repair. The measured motor performance aspects were simple reaction time, choice reaction time, speed of movement, foot tapping speed, and coordination. METHODS:Ninety patien...
journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2001-11345
更新日期:2001-02-01 00:00:00