Abstract：
:The effects of exercise training and acute exercise on the immune system were investigated in rats. For chronic exercise training, the rats ran on a drum exerciser at the intensity of about 60-70% of maximal oxygen consumption (VO2max) for 30 min and then extended up to 60 min per day, 5 days per week for 10 weeks. The rats were at rest for 3 days before sacrifice. The mitogenic activity of spleen lymphocytes to concanavalin A (Con A) and staphylococcal enterotoxin B (SEB) decreased as compared to the sedentary control, while proliferative response to lipopolysaccharide (LPS) increased. The interleukin-2 (IL-2) production in the training group was reduced. The immunomodulatory effect after acute exercise has also been investigated and it showed profound enhancement of cell proliferation to Con A, SEB and LPS in mild (50% VO2max for 10 min) and moderate (70% VO2max for 10 min) exercise groups. The enhancing activity was less prominent after severe exercise (> 75%) VO2max until exhaustion). The IL2 production increased in all of these acute exercise groups. Nevertheless, there was no significant variation between exercise and control groups in the cell number per spleen and the percentages of various lymphocyte populations, i.e., total T, CD4+, CD8+ and IL-2R+ T cells as well as B cells. In summary, this study indicates that chronic exercise training may cause the reduction of T cell activity while acute exercise manifests an enhancing effect. However, B cell proliferation was elevated in both chronic and acute exercise groups.
journal_name
Int J Sports Medjournal_title
International journal of sports medicineauthors
Lin YS,Jan MS,Chen HIdoi
10.1055/s-2007-1021151subject
Has Abstractpub_date
1993-02-01 00:00:00pages
86-92issue
2eissn
0172-4622issn
1439-3964journal_volume
14pub_type
杂志文章abstract：:To examine measures of total and regional body composition using dual X-ray absorptiometry (DXA) in NCAA Division I collegiate equestrian athletes, 31 female collegiate equestrian athletes were matched to a population of normal controls by age and body mass index. Total and regional fat tissue mass (FM), lean tissue m...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/a-0863-4607
更新日期：2019-05-01 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 present paper reviews evidence for the role of specific amino acids in the etiology of fatigue and the overtraining syndrome in athletes. An increase in the plasma concentration ratio of free tryptophan: branched-chain amino acids may mediate an increase in 5-HT synthesis in the brain and thus induce fatigue durin...
journal_title：International journal of sports medicine
pub_type： 杂志文章,评审
doi：10.1055/s-2007-1024863
更新日期：1990-05-01 00:00:00
abstract：:The purpose of this study was to analyze the validity and the reliability of the intensity ranges, number of actions and changes of direction measured by a commercial inertial measurement unit. Eleven elite youth futsal players performed a circuit with different type of displacements as sprinting, running at low-mediu...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/a-1244-9985
更新日期：2020-10-05 00:00:00
abstract：:Five male endurance-trained runners completed an interval running session of 15 x 1-min intervals at 95% VO2 max. Venous blood samples were collected pre-exercise and then immediately, 30- and 60-minutes post-exercise. The response of cultures of total lymphocytes to mitogen (phytohaemagglutinin) were significantly re...
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：:Excessive and prolonged exposure to impact acceleration during running is associated with increased injury rate. Acute use of compressive garments has been speculated to improve attenuation. However, it is unknown how longer interventions of compressive garments influence attenuation in running. 40 runners trained wit...
journal_title：International journal of sports medicine
pub_type： 杂志文章,随机对照试验
doi：10.1055/s-0035-1548813
更新日期：2015-10-01 00:00:00
abstract：:It has been recently suggested that high and sustained lactate levels may elicit increases in peripheral B-EN concentrations (16). We have observed elevated and sustained lactate concentrations in response to a low-volume resistive exercise protocol (14) that were similar to those from other exercise protocols that pr...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-972801
更新日期：1996-01-01 00:00:00
abstract：:This study was undertaken to assess whether ventilatory anaerobic threshold (T vent) reflected endurance capacity (EC) in sports medical control. Fifteen subjects performed two cycle ergometer tests. The first was a maximal exercise test, which consisted of increasing the load 20 W/min until exhaustion. During this te...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2008-1025654
更新日期：1987-06-01 00:00:00
abstract：:The possible peripheral and/or central origin in the mechanisms responsible for day-time fluctuation in maximal torque of the triceps surae muscle were investigated with a special emphasis on antagonist muscle coactivation. Eleven healthy male subjects (physical education students) took part in this investigation. The...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2005-837618
更新日期：2006-03-01 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
pub_type： 杂志文章
doi：10.1055/s-2008-1034599
更新日期：1981-08-01 00:00:00
abstract：:The purpose of this study was to test the hypothesis that the ACE DD genotype is unfavorably associated with the ultimate power-oriented performance. To test the hypothesis we recruited a total of 848 subjects including 55 international level power-oriented athletes (High-performance), 100 national level power-oriente...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0029-1239523
更新日期：2010-01-01 00:00:00
abstract：:This study examined the relationship between PhA and short-term maximal intensity efforts in soccer players, and was conducted in 99 male soccer players, ages 19-36 years. Bioelectrical impedance was used to assess body fat, fat free mass (FFM) and PhA (phase angle). Running Anaerobic Sprint Test (RAST) was used to ev...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/a-0969-2003
更新日期：2019-10-01 00:00:00
abstract：:The aim of this study was to determine the effects of gender and chronic hyperactivity (training) on musculo-tendinous stiffness and joint flexibility and to examine in vivo whether those stiffness parameters were correlated. Thus, maximal isometric voluntary contraction, series elastic stiffness during wrist flexion ...
journal_title：International journal of sports medicine
pub_type： 临床试验,杂志文章
doi：10.1055/s-2003-39500
更新日期：2003-05-01 00:00:00
abstract：:Our purpose was to determine if an acute bout of heading soccer balls adversely affected postural control and self-reported symptoms of cerebral concussion. Thirty-one college-aged soccer players were randomly placed into either a kicking group or a heading group. Subjects either kicked or headed 18 soccer balls over ...
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-2004-819941
更新日期：2004-07-01 00:00:00
abstract：:This study examined the effect of exercise-induced dehydration by ~4% body mass loss on 5-km cycling time trial (TT) performance and neuromuscular drive, independent of hyperthermia. 7 active males were dehydrated on 2 occasions, separated by 7 d. Participants remained dehydrated (DEH, -3.8±0.5%) or were rehydrated (R...
journal_title：International journal of sports medicine
pub_type： 杂志文章,随机对照试验
doi：10.1055/s-0033-1364022
更新日期：2014-08-01 00:00:00
abstract：:The purpose of this report is to study serotonin reuptake of the brain in a severely overtrained athlete by using single-photon emission computed tomography (SPECT). A 26-year-old team athlete increased his training volume (by 200 %) and intensity markedly in a new high-level team. After two months, he started to feel...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2004-819952
更新日期：2004-02-01 00:00:00
abstract：:This study compared physical characteristics (body height [BH], body mass [BM], body fat [BF], and fat free mass [FFM]), one repetition maximum bench press (1RM (BP)), jumping explosive power (VJ), handball throwing velocity, power-load relationship of the leg and arm extensor muscles, 5- and 15-m sprint running time,...
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
abstract：:This study aimed to investigate the impact of a 16-week dance-based aerobic exercise program on lymphocyte function in healthy and type 2 diabetes mellitus (T2DM) women. We enrolled 23 women: 11 with T2DM and 12 non-diabetic controls. Initially, we performed anthropometry and body composition measurements, afterwards,...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/a-1309-2037
更新日期：2020-12-15 00:00:00
abstract：:The aim of this research was to study the effect of hand paddles on the pitch, the sweepback angles and other stroke kinematic characteristics of the hand during front crawl swimming. Ten female competitive swimmers swam without and with small (116 cm (2)) and large (268 cm (2)) paddles. Four cameras (60 Hz) were used...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-965570
更新日期：2008-05-01 00:00:00
abstract：:Since the first official world championships in breath-hold diving (1996), a sport has developed where the athletes compete in various disciplines of breath-hold diving. One of the rules is that the diver should surface from a dive without showing any signs of hypoxia. Depending on the severity of hypoxia, a diver may...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2006-924361
更新日期：2007-04-01 00:00:00
abstract：:This study investigated neuromuscular adaptations of the knee extensors after 8 weeks of plyometric training. 23 subjects were randomly assigned to an intervention group and a control group. We measured isometric maximum voluntary torque (iMVT), rate of torque development (RTD) and impulse (IMP) over different time in...
journal_title：International journal of sports medicine
pub_type： 杂志文章,随机对照试验
doi：10.1055/s-0033-1343401
更新日期：2014-02-01 00:00:00
abstract：:Controversy exists as to whether plasma volume (PV) expansion has the potential to increase maximal oxygen uptake (VO2max). In the present study, VO2max and exercise time to fatigue were measured in nine untrained men when plasma volume (PV) was normal and then again on the next day following two levels of PV expansio...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-1024774
更新日期：1990-04-01 00:00:00
abstract：:This study determined the concurrent validity and reliability of force, velocity and power measurements provided by accelerometry, linear position transducer and Samozino's methods, during loaded squat jumps. 17 subjects performed squat jumps on 2 separate occasions in 7 loading conditions (0-60% of the maximal concen...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0034-1385886
更新日期：2015-02-01 00:00:00
abstract：:Highly repetitive submaximal intermittent contractions of the forearm muscles during periods of 30-50 min partially explain why motorcycle races are so demanding for the neuromuscular system. This study investigated the contribution of central and peripheral mechanisms of fatigue on the exerted and contralateral exten...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0035-1549959
更新日期：2015-11-01 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：:We investigated the effects of vibration (35 Hz, 45 Hz and 55 Hz) as countermeasure locally applied to unloading hind limbs on bone, muscle and Achilles tendon. 40 female Sprague Dawley rats were divided into 5 groups (n=8, each): tail-suspension (TS), TS plus 35 Hz/0.3 g vibration (TSV35), TS plus 45 Hz/0.3 g vibrati...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0033-1358468
更新日期：2014-06-01 00:00:00
abstract：:In major track and field competitions, the most risky discipline is the combined event. Therefore, we aimed to record and analyze the incidence and characteristics of sports injuries incurred during the Youth and National Combined Events Championships. During the French Athletics Combined Events Championships in 2010,...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0031-1301332
更新日期：2012-10-01 00:00:00
abstract：:The current study aimed to determine the effects of sildenafil-associated aerobic exercise training (ET) on the physical performance, hemodynamic, autonomic and inflammatory parameters of rats. Male Wistar rats were randomly assigned to: sedentary rats placebo-treated (SP); sedentary rats sildenafil-treated (SS); trai...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/a-0633-9132
更新日期：2018-10-01 00:00:00
abstract：:The purpose of this study was to investigate the effects of recombinant human erythropoietin (rHuEPO) administration on energy metabolism during exercise. Specifically, the contribution of anaerobic (glycogen) metabolism during exercise was evaluated. Sprague-Dawley rats were randomly assigned to an experimental [rHuE...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-971919
更新日期：1998-05-01 00:00:00
abstract：:The accumulated O2 deficit (the difference between the estimated energy demand and the actual O2 uptake) was determined during intense exhaustive exercise (2-7 min) in elite athletes, and its relationship with muscle buffer capacity, muscle enzymes and muscle morphology was examined. Five oarsmen, fifteen soccer playe...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-1021165
更新日期：1993-05-01 00:00:00
