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 an increase in tibiofemoral contact pressure and a decrease in contact area, with a return to more normal conditions after repair. 10 fresh-frozen cadaver knees each underwent 10 cycles of axial compressive loading in full extension under three different testing conditions: intact, meniscocapsular separation, and repair. A pressure sensor matrix was inserted into the medial joint space and used to measure magnitude and location of contact pressure and area. Mean contact pressure increased from 0.80±0.17 MPa in the intact knee to 0.88±0.19 MPa with separation, with a decrease to 0.78±0.14 MPa following repair. Peak pressures followed a similar trend with 2.59±0.41, 3.03±0.48, and 2.84±0.40 MPa for the same three groups, respectively. While none of the changes seen was statistically significant, even these small changes would potentially create degenerative changes at the articular surface over prolonged (i. e., months or years) standing, walking, and activity in the unrepaired state.
journal_name
Int J Sports Medjournal_title
International journal of sports medicineauthors
Dugas JR,Barrett AM,Beason DP,Plymale MF,Fleisig GSdoi
10.1055/s-0034-1398656subject
Has Abstractpub_date
2015-06-01 00:00:00pages
498-502issue
6eissn
0172-4622issn
1439-3964journal_volume
36pub_type
杂志文章abstract：:Ten untrained subjects and nine trained cyclists were examined during graduated ergometric exercise in the supine position. The levels of epinephrine and norepinephrine in the blood as well as the heart rate and oxygen intake were determined. At submaximum levels, epinephrine, norepinephrine, lactate, and the heart ra...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2008-1034601
更新日期：1981-08-01 00:00:00
abstract：:Considerable interindividual variation in the response of blood pressure to exercise has been found. In this study the response of systolic blood pressure during a progressive maximal bicycle ergometer test was investigated in 747 physically active male subjects over age of 40 years with normal, borderline elevated, a...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-1025042
更新日期：1988-12-01 00:00:00
abstract：:The present series of experiments were conducted to access the surface EMG frequency parameters during repeated fingertip isometric contractions to determine if they can be used as a fatigue index under specific grip used in rock climbing. Electromyograms of the finger flexors and extensors were characterised in ten e...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2003-41174
更新日期：2003-08-01 00:00:00
abstract：:Fitness, and specifically body composition of football referees requires attention in order to achieve the highest possible standards. The aim of the present study was to describe body composition of elite Spanish football referees over 11 years. Data from 2001 to 2012 pre-seasons were analyzed from a total of 470 ref...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0034-1398582
更新日期：2015-06-01 00:00:00
abstract：:The present study was designed to investigate the neuronal control and biomechanical effects of stumbling reactions. To induce these perturbations, a specially prepared treadmill was used which allowed rapid and powerful changes of treadmill speed. EMG recordings of leg muscles were related to cinematic movement patte...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2008-1025785
更新日期：1986-12-01 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：:The ventilatory (anaerobic) threshold during short-term exercise has been defined as the O2 uptake (VO2) immediately below the VO2 at which pulmonary ventilation (VE) increases disproportionally relative to VO2 and the ventilatory threshold for long-term exercise as the VO2 immediately below the VO2 at which the VE co...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2008-1025730
更新日期：1986-02-01 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：: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：:Orthostatic tolerance is impaired following an acute bout of exercise. This study examined the effect of fluid ingestion following treadmill exercise in restoring the cardiovascular responses to an orthostatic stress. Five men (age, 29.6 +/- 3.4 yrs) were exposed to a graded lower body negative (LBNP) pressure protoco...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-972615
更新日期：1997-04-01 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：:This study aims to investigate the relationship between subjective and external measures of load in professional youth football players whilst accounting for the effect of training theme or competition. Data from ratings of perceived exertion and global positioning system-derived measures of external training load wer...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/a-1300-2959
更新日期：2020-12-01 00:00:00
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：: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：:This study aims to investigate the changes in the mechanical properties of quadriceps muscle following a sub-maximal concentric-eccentric stepping exercise protocol. Twenty-four untrained healthy subjects aged 21.9 +/- 0.55 years were asked to perform a 10-minute stepping exercise where the dominant leg worked eccentr...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-965337
更新日期：2008-03-01 00:00:00
abstract：:One hundred fourteen subjects (34 +/- 8 years) without any competition background took part in an endurance training study to be completed after 1.5 years with running a marathon. Ultimately, 60 males and 18 females achieved that goal. The training program, carefully supervised, was divided into three phases with a ma...
journal_title：International journal of sports medicine
pub_type： 临床试验,杂志文章
doi：10.1055/s-2007-1024960
更新日期：1989-10-01 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：:We investigated how inspiratory muscle training impacted respiratory and locomotor muscle deoxygenation during submaximal exercise with resistive inspiratory loading. 16 male cyclists completed 6 weeks of either true (n=8) or sham (n=8) inspiratory muscle training. Pre- and post-training, subjects completed 3, 6-min e...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0042-104198
更新日期：2016-07-01 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：:Duplicate haemoglobin mass (Hbmass) measurements are recommended before and after altitude training sojourns to identify individual adaptations in athletes with a high level of certainty. Duplicate measurements reduce typical error (TE) and disclose measurement outliers, but are usually made on separate days, which is...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0034-1398583
更新日期：2015-05-01 00:00:00
abstract：:Acute aerobic exercise produces post-exercise hypotension (PEH). Chinese populations have lower prevalence of cardiovascular disease compared to Caucasians. PEH may be associated cardiovascular disease through its influence on hypertension. The purpose of this study was to compare PEH between Caucasian and Chinese sub...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0034-1390493
更新日期：2015-03-01 00:00:00
abstract：:We aimed to determine whether blood flow restriction (BFR) alters the characteristics of individual motor units during low-intensity (LI) exercise. Eight men (26.0±3.8 yrs) performed 5 sets of 15 knee extensions at 20% of one-repetition maximum (with and without BFR). Maximal isometric voluntary contractions (MVC) wer...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/a-0888-8816
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：:Stretching of an activated muscle prior to its shortening enhances its performance during the concentric contraction. This phenomenon has been interpreted to be primarily due to the utilization of elastic energy stored in the series elastic elements of the muscle during the stretch. However, reflex potential has also ...
journal_title：International journal of sports medicine
pub_type： 临床试验,杂志文章
doi：10.1055/s-2008-1026076
更新日期：1982-08-01 00:00:00
abstract：:There is a potential need for the official criterion of testosterone abuse in sport (the urinary concentration ratio of testosterone glucuronide/epitestosterone glucuronide, TG/EG > 6) to be backed-up by some complementary markers, more particularly in cases of physiologically high TG/EG and when there is suspicion of...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-972853
更新日期：1996-07-01 00:00:00
abstract：:Hormonal and metabolic parameters were studied for two teams after a football match. Blood samples were collected before the start, at half-time, at the end, and 45 and 90 min after the end of the game. In the first team, ACTH, cortisol, and lactate levels increased significantly during the whole match to resume basal...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2008-1025732
更新日期：1986-02-01 00:00:00
abstract：:The aim of this study was to investigate whether rs41274853 in the 3'-untranslated region of the ciliary neurotrophic factor receptor gene (CNTFR) is associated with elite sprint/power athletic status and assess its functional significance. A total of 211 Japanese sprint/power track and field athletes (62 internationa...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0035-1564257
更新日期：2016-05-01 00:00:00
abstract：:This study assessed tolerance to fluid ingestion with repeated sessions of drinking while running. Runners (n = 7; age 22 +/- 2 yr; V O (2max) = 54.4 +/- 7.1 ml/kg/min) performed six 90-min runs (65 % V O (2max); separated by 7 - 11 days). During run 1, subjects drank a glucose-electrolyte solution AD LIBITUM for 1 mi...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2008-1038620
更新日期：2008-11-01 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：:In order to assess the changes in the cellular immune system, 27 healthy male subjects were selected who participate in leisure-time sports and in whom measurements of the lymphocyte subsets in venous blood were carried out before and after a standardized endurance exercise test (EI, 60 minutes in length, intensity: 6...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-1024777
更新日期：1990-04-01 00:00:00
