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 the condom-covered humeral head, to which contact stresses of 2.1 MPa, 3.3 MPa and 6.4 MPa, respectively, were applied with a rubber disc of a simple loading apparatus. The model makes it possible, to compare experimentally loaded regions with experimentally unloaded regions in both the same joint area and the contralateral control joint. Intermittent pressure loading (4-s-on/16-s-off-cycle) during 2 hours of pulse-experiment and 18 hours of chase-experiment resulted in a 40% increase in proteoglycan synthesis rate at 2.1 MPa, an unaltered synthesis rate at 3.3 MPa, and a 45% decrease in proteoglycan synthesis rate at 6.4 MPa, as measured by 35S-sulfate incorporation. No significant increase in degradation rate of proteoglycans was noted during the various loading experiments.
journal_name
Int J Sports Medjournal_title
International journal of sports medicineauthors
Müller G,Hanschke Mdoi
10.1055/s-2007-972661subject
Has Abstractpub_date
1997-08-01 00:00:00pages
438-48issue
6eissn
0172-4622issn
1439-3964journal_volume
18pub_type
杂志文章abstract：:The purpose of this investigation was to determine the effect of ambient temperature on the salivary immunoglobulin A (s-IgA) response to submaximal exercise. Nine adult males (x age +/- SD = 22 +/- 2 yrs) volunteered to perform an incremental treadmill test to exhaustion for the determination of VO2max and three 30-m...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-1024722
更新日期：1991-10-01 00:00:00
abstract：:The university stage is a critical developmental period for young adults, where lifestyles can determine future health. A cross-sectional study including 481 college students was conducted, with the following objectives: 1) to examine the prevalence of risk of developing eating disorders in college students, 2) to ass...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/a-1152-5064
更新日期：2020-09-01 00:00:00
abstract：:A prospective study of acute injuries from sports and physical exercise was carried out during 1 year in a total population of a municipality with 31,620 inhabitants. Data on exposure were collected: the number of participants in each sport, the hours of participation, and number of weeks in the season per year. The n...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-1025052
更新日期：1988-12-01 00:00:00
abstract：:Gait retraining is a method for management of patellofemoral pain, which is a common ailment among recreational runners. The present study investigated the effects of gait retraining from rearfoot strike to forefoot strike on running economy, heart rate, and respiratory exchange ratio immediately post-retraining and o...
journal_title：International journal of sports medicine
pub_type： 杂志文章,随机对照试验
doi：10.1055/s-0043-110225
更新日期：2017-12-01 00:00:00
abstract：:Earlier studies of endurance athletes have shown decreased levels of secretory IgA and an increased frequency of upper respiratory tract (URT) infections after periods of hard training. In this study, 14 world-class canoeists were studied during very hard physical training, after lower-intensity training combined with...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-972838
更新日期：1996-04-01 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：:The purpose of this study was to examine the effect of different loads on repetition speed during single sets of repetitions to failure in bench press and parallel squat. Thirty-six physical active men performed 1-repetition maximum in a bench press (1 RM (BP)) and half squat position (1 RM (HS)), and performed maxima...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2005-872825
更新日期：2006-09-01 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 purpose of this study is to investigate whether a periosteum patch could enhance polyethylene terephthalate (PET) artificial ligament graft osseointegration in a bone tunnel. 12 female goats underwent ACL reconstruction with a PET artificial ligament graft in the right knees. Right knees in 6 goats were reconstruc...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0042-102258
更新日期：2016-06-01 00:00:00
abstract：:To determine the adaptations of the autonomic nervous system in the control of heart rate and blood pressure induced by endurance training, 10 competitive cyclists aged 27 +/- 7 years and 10 age-, weight- and height-matched sedentary controls were subjected to Power Spectral Analysis of the RR interval and of blood pr...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-972828
更新日期：1996-04-01 00:00:00
abstract：:Eighteen male marathon runners (mean marathon performance: 2 h 36 min, SD = 7.0 min; VO2 max = 64.1 +/- 15.1 ml/kg . min-1) were submitted to a needle biopsy in the suprailiac region and to various measurements of body fatness: percent body fat (% fat), seven skinfold thicknesses, and mean fat cell diameter. Basal and...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2008-1025853
更新日期：1985-10-01 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：: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：:Quadriceps atrophy and weakness can persist for years after anterior cruciate ligament reconstruction (ACLR). We evaluated the effectiveness of a home-based blood flow restriction (BFR) exercise program to increase quadriceps size and strength several years after ACLR. Nine adults with ACLR (5±2 yrs post-surgery, ≤90%...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/a-0961-1434
更新日期：2019-09-01 00:00:00
abstract：:This study was a retrospective examination of the relationship between estimated dietary sodium intake and training-induced changes in plasma volume (PV). It was undertaken to explore one possible explanation for the large individual differences in PV shifts accompanying 3 d of endurance cycling. Ten healthy males rod...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-973033
更新日期：1995-10-01 00:00:00
abstract：:The purpose of this study was to evaluate the effect of using different mathematical models to describe the relationship between treadmill running speed and time to exhaustion. All models generated a value for an aerobic parameter (critical speed; S (critical)). 35 university students performed 5-7 constant-speed 0%-s...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0031-1275298
更新日期：2011-07-01 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：: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：: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：:Evidence suggests that myofibers from endurance trained skeletal muscle display unique contractile parameters. However, the underlying mechanisms remain unclear. To further elucidate the influence of endurance training on myofiber contractile function, we examined factors that may impact myofilament interactions (i. e...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0033-1351334
更新日期：2014-06-01 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：:We have studied the effect of exercise on the percentage of free plasma estradiol 17-beta (E2) and testosterone (T) in 13 untrained (UT) and 8 trained (marathon runners, MR) eumenorrheic women. All women performed a standardized bicycle ergometer (UT) or treadmill (MR) test in the follicular and luteal phases of their...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2008-1025721
更新日期：1987-12-01 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：:To examine the acute influence of pedaling cadence on arterial stiffness in young men, 15 healthy men (21.8±0.4 years) underwent 3 trials in self-control crossover design: non-cycling control (CON), cycling at 60 (RPM60) and 90 rounds per min (RPM90). Cycling lasted 30 min at intensity of 35% heart rate reserve. Arter...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/a-0753-5008
更新日期：2019-01-01 00:00:00
abstract：:The reproducibility of performance in a laboratory test impacts on the statistical power of that test to detect changes of performance in experiments. The purpose of this study was to determine the reproducibility of performance of distance runners completing a 60 min time trial (TT) on a motor-driven treadmill. Eight...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-971879
更新日期：1998-01-01 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：:It has been suggested in previous studies that the difference in endurance performance between males and females is related to gender-specific differences in cardiac function. Other studies have not equated males and females for physical condition, and this may have contributed to the findings. The purpose of this stu...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-1024696
更新日期：1991-08-01 00:00:00
abstract：:Little if any research has examined the variability in time to exhaustion (TTE) during submaximal treadmill running. This study investigated the test-retest reliability of submaximal treadmill TTE as a measure of endurance capacity. 16 endurance-trained males (n=14) and females (n=2) completed a run to exhaustion at 7...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0035-1555928
更新日期：2016-03-01 00:00:00
abstract：:The use of 60%-95% of maximal heart rate (HR), heart rate reserve (HRR) and VO2max as exercise training intensities was examined in male runners, and these intensities were related to VO2 observed at the lactate threshold (LT) and fixed blood lactate concentrations (FBLC) of 2.0, 2.5, and 4.0 mM. Thirty-one subjects (...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-1024795
更新日期：1990-06-01 00:00:00
abstract：:The purpose of this investigation was to determine the oxygen consumption, heart rate and plasma lactate responses at the fatigue threshold (FT) and estimate the length of time the FT could be maintained. Ten adult males (mean age +/- SD = 21.1 +/- 1.3 yrs) volunteered to perform a maximal treadmill test and FT test. ...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-1024686
更新日期：1991-06-01 00:00:00
