Isometric strength, sprint power, and aerobic power in individuals with a spinal cord injury.

abstract：:To compare the physiological response to a cocaine-exercise challenge in cocaine-conditioned animals with that of acute-cocaine animals, rats were injected i.p. with either cocaine (20 mg.kg-1) or saline, twice daily for 14 consecutive days. On the 15th day (test day) cocaine-conditioned rats received an i.v. injectio...

journal_title：Medicine and science in sports and exercise

authors： Kelly KP,Han DH,Fellingham GW,Winder WW,Conlee RK

更新日期：1995-01-01 00:00:00

abstract：PURPOSE:The purpose of this study was to investigate the effect of acute ingestion of modafinil (M) on time to exhaustion during high-intensity exercise. Modafinil (M) is a psychostimulant developed to treat narcolepsy, with "arousal" properties attributed to an increased release of dopamine in the CNS. Because other s...

journal_title：Medicine and science in sports and exercise

authors： Jacobs I,Bell DG

更新日期：2004-06-01 00:00:00

abstract：UNLABELLED:The extent of and the interactions between muscle strength, walking speed, postural control, and symptomatic fatigue in multiple sclerosis (MS) are not known, nor are the effects of bilateral strength asymmetries on these variables. PURPOSE:To quantify the magnitude of and the associations between bilateral...

journal_title：Medicine and science in sports and exercise

authors： Chung LH,Remelius JG,Van Emmerik RE,Kent-Braun JA

更新日期：2008-10-01 00:00:00

abstract：:Natural killer (NK) cells are highly influenced by physical exercise. The possible important mechanisms behind exercise-induced changes in NK cell function are cytokines, hyperthermia, and stress hormones, including catecholamines, growth hormone, cortisol, and beta-endorphins. Infusion studies mimicking stress hormon...

journal_title：Medicine and science in sports and exercise

authors： Pedersen BK,Ullum H

更新日期：1994-02-01 00:00:00

abstract：UNLABELLED:Exertional heat stroke (EHS) is a state of extreme hyperthermia that occurs when excess heat that is generated by muscular exercise exceeds the body's ability to dissipate it at the same rate. EHS is thought to coincide with previously healthy, highly motivated, and relatively untrained individuals exerting ...

journal_title：Medicine and science in sports and exercise

authors： Epstein Y,Moran DS,Shapiro Y,Sohar E,Shemer J

更新日期：1999-02-01 00:00:00

abstract：UNLABELLED:Limited information is currently available regarding muscle synergistic patterns and triggered reflex responses during dynamic weight-bearing activities in the presence of muscle fatigue. PURPOSE:The purpose of this study was to examine the effects of quadriceps muscle fatigue on patterns of muscle activati...

journal_title：Medicine and science in sports and exercise

authors： Ballantyne BT,Shields RK

更新日期：2010-09-01 00:00:00

abstract：PURPOSE:It has been well established in mammals that circadian behavior as well as the molecular clockwork can be synchronized to the light-dark cycle via the suprachiasmatic nucleus of the hypothalamus (SCN). In addition to light, it has been demonstrated that nonphotic time cues, such as restricting the time of food ...

journal_title：Medicine and science in sports and exercise

authors： Wolff G,Esser KA

更新日期：2012-09-01 00:00:00

abstract：PURPOSE:Arterial distensibility decreases with age. This decrease may be associated with the initiation and/or progression of hypertension and atherosclerosis and may be attenuated by positive lifestyle habits, including habitual physical activity. We tested the hypothesis that self-reported sport, leisure, and work ph...

journal_title：Medicine and science in sports and exercise

authors： Schmitz KH,Arnett DK,Bank A,Liao D,Evans GW,Evenson KR,Stevens J,Sorlie P,Folsom AR

更新日期：2001-12-01 00:00:00

abstract：:Potential physiological, anthropometric, and training determinants of running economy (RE) were studied in a heterogeneous group of habitual distance runners (N = 188, 119 males, 69 females). RE was measured as VO2 (ml.kg-1.min-1) during level treadmill running at 161 m.min-1 (6 mph) (VO2-6). Examined as potential det...

journal_title：Medicine and science in sports and exercise

authors： Pate RR,Macera CA,Bailey SP,Bartoli WP,Powell KE

更新日期：1992-10-01 00:00:00

abstract：:This study characterizes exercise-induced lipid peroxidation during graded aerobic exercise in seven healthy men and women (36.4 +/- 3 yr). Levels of ethane and pentane in expired breath during cardiopulmonary exercise stress testing were measured at rest, lactic acidosis threshold (LAT), maximal exercise (VO2max), an...

journal_title：Medicine and science in sports and exercise

authors： Leaf DA,Kleinman MT,Hamilton M,Barstow TJ

更新日期：1997-08-01 00:00:00

abstract：PURPOSE:The best sprint performances are usually reached between the ages of 20 and 30 yr; however, even in well-trained individuals, performance continues to decrease with age. Although this inevitable decrease in performance has been related to reductions in muscular force, velocity, and power capabilities, these mea...

journal_title：Medicine and science in sports and exercise

authors： Pantoja PD,Saez DE Villarreal E,Brisswalter J,Peyré-Tartaruga LA,Morin JB

更新日期：2016-12-01 00:00:00

abstract：:To determine the effects of anabolic steroids on myocardial structure, VO2max, and body composition, experienced age-matched male weight trainers (M age 26.5 yr) who either used (U) (N = 11) or did not use (NU) (N = 13) anabolic steroids were evaluated. Steroid users were tested while off cycle (U-OFF) for at least 8 ...

journal_title：Medicine and science in sports and exercise

authors： Sachtleben TR,Berg KE,Elias BA,Cheatham JP,Felix GL,Hofschire PJ

更新日期：1993-11-01 00:00:00

abstract：PURPOSE:This study aimed to examine ethnic differences in objectively measured physical activity (PA) and the relationship between PA and metabolic risk factors. METHODS:The analysis included 2566 participants of the Dallas Heart Study (53% non-Hispanic black, 32% non-Hispanic white, and 15% Hispanic) who wore an acce...

journal_title：Medicine and science in sports and exercise

authors： Lakoski SG,Kozlitina J

更新日期：2014-06-01 00:00:00

abstract：:To inform the development of bone-specific physical activity (PA) assessment methods and contribute to bone-specific PA guidelines, accelerometer outcomes that provide the most valid estimates of skeletal loading in adults must be identified. PURPOSE:The aims of this project were two-fold. First, to assess the concur...

journal_title：Medicine and science in sports and exercise

authors： Higgins S,Higgins LQ,Vallabhajosula S

更新日期：2020-11-07 00:00:00

abstract：:Thirty-eight athletes with unilateral patellar tendinopathy (17 with a tendinopathy of the main body of the tendon, and 21 with an insertional tendinopathy) underwent ultrasound-guided multiple percutaneous longitudinal tenotomy under local anaesthetic infiltration after failure of conservative management. Thirty-four...

journal_title：Medicine and science in sports and exercise

authors： Testa V,Capasso G,Maffulli N,Bifulco G

更新日期：1999-11-01 00:00:00

abstract：PURPOSE:Unilateral strength training strengthens not only the muscles on the trained side but also the homologous muscles on the untrained side; however, the magnitude of this interlimb cross-education is modest. We tested the hypothesis that heightened sensory feedback by mirror viewing the exercising hand would augme...

journal_title：Medicine and science in sports and exercise

authors： Zult T,Goodall S,Thomas K,Solnik S,Hortobágyi T,Howatson G

更新日期：2016-06-01 00:00:00

abstract：:Ski charging was measured using giant-slalom style skis as gliding capacitors. The voltage measured across the plates was proportional to the charge on the base. While resting on dry snow or suspended in the air, the voltage was slowly reduced by the data logger itself. On wet snow the decay was much faster. While sta...

journal_title：Medicine and science in sports and exercise

authors： Colbeck SC

更新日期：1995-01-01 00:00:00

abstract：PURPOSE:This study tested the hypothesis that the magnitude of cardiovascular (CV) drift and decrease in maximal oxygen uptake (V[spacing dot above]O2max) would be greater at 35 degrees C than at 22 degrees C. METHODS:The increase in HR and decrease in stroke volume (SV) between 15 and 45 min of cycling at 59.2 +/- 1....

journal_title：Medicine and science in sports and exercise

authors： Lafrenz AJ,Wingo JE,Ganio MS,Cureton KJ

更新日期：2008-06-01 00:00:00

abstract：INTRODUCTION:The development of chronic ankle instability (CAI) is the primary residual deficit after ankle joint sprain. It has been proposed that CAI is characterized by two entities, namely, mechanical instability and functional instability. Each of these entities in turn is composed of various insufficiencies. Rese...

journal_title：Medicine and science in sports and exercise

authors： Delahunt E,Coughlan GF,Caulfield B,Nightingale EJ,Lin CW,Hiller CE

更新日期：2010-11-01 00:00:00

abstract：PURPOSE:Aerobic exercise training in sedentary individuals improves physical fitness and various cardiovascular (CV) biomarkers. Nevertheless, there has been controversy as to whether exercise training may adversely affect some biomarkers in a small segment of the population. The purpose of this study was to investigat...

journal_title：Medicine and science in sports and exercise

authors： Leifer ES,Mikus CR,Karavirta L,Resnick BD,Kraus WE,Häkkinen K,Earnest CP,Fleg JL

更新日期：2016-01-01 00:00:00

abstract：PURPOSE:Methicillin-resistant Staphylococcus aureus (MRSA) has been recognized as a serious skin infection in the athletic population. Literature in reference to football players has been sparse. We sought to better elucidate circumstances surrounding such infections in collegiate football players. METHODS:Data from t...

journal_title：Medicine and science in sports and exercise

authors： Bowers AL,Huffman GR,Sennett BJ

更新日期：2008-08-01 00:00:00

abstract：PURPOSE:Trunk control is essential in ballet and may be compromised in dancers with a history of low back pain (LBP) by associated changes in motor control. This study aimed to compare trunk mechanical properties between professional ballet dancers with and without a history of LBP. As a secondary aim, we assessed whet...

journal_title：Medicine and science in sports and exercise

authors： Gildea JE,VAN DEN Hoorn W,Hides JA,Hodges PW

更新日期：2015-08-01 00:00:00

abstract：:To test a hypothesis that the differences in running performances between men and women narrow with increasing race distance, recent best running speeds (m.s-1) of 28 female ultramarathon runners over racing distances from 5 to 90 km were compared with those of male runners matched for 56 km race time, age and trainin...

journal_title：Medicine and science in sports and exercise

authors： Bam J,Noakes TD,Juritz J,Dennis SC

更新日期：1997-02-01 00:00:00

abstract：:Regression analysis is often used to demonstrate associations among variables believed to be biologically related. Failure to demonstrate a "significant" relationship may be due to two factors: 1) the variables are truly unrelated, or 2) a relationship exists but goes undetected due to inadequate statistical power. In...

journal_title：Medicine and science in sports and exercise

authors： Sharp DS,Gahlinger PM

更新日期：1988-12-01 00:00:00

abstract：INTRODUCTION:High-intensity endurance training can elicit profound cardiac adaptations; however, the current evidence as to its impact on the proximal aorta is limited. The purpose of this study was to investigate the morphological and functional characteristics of the proximal aorta in endurance athletes. METHODS:Fif...

journal_title：Medicine and science in sports and exercise

authors： Tarumi T,Yamabe T,Fukuie M,Kimura R,Zhu DC,Ohyama-Byun K,Maeda S,Sugawara J

更新日期：2020-08-31 00:00:00

abstract：INTRODUCTION/PURPOSE:Decreased lumbo-pelvic (or core) stability has been suggested to contribute to the etiology of lower extremity injuries, particularly in females. This prospective study compares core stability measures between genders and between athletes who reported an injury during their season versus those who ...

journal_title：Medicine and science in sports and exercise

authors： Leetun DT,Ireland ML,Willson JD,Ballantyne BT,Davis IM

更新日期：2004-06-01 00:00:00

abstract：:Healthy men (N = 33) and women (N = 73) participated in a 6-month exercise program three mornings per week, and their attendance scores (percent of total classes attended) were related to a variety of physiological, anthropometric, psychological, and demographic variables which were studied. These subjects were also g...

journal_title：Medicine and science in sports and exercise

authors： Gale JB,Eckhoff WT,Mogel SF,Rodnick JE

更新日期：1984-12-01 00:00:00

abstract：:The association between increasing age and decreasing vagal modulation is well known. However, the importance of fitness as a determinant of the decline in vagal modulation with age is not established. To test the hypothesis that decreasing vagal modulation is largely a function of declining fitness rather than increa...

journal_title：Medicine and science in sports and exercise

authors： Goldsmith RL,Bigger JT Jr,Bloomfield DM,Steinman RC

更新日期：1997-06-01 00:00:00

abstract：PURPOSE:To determine which combination of landing protocol and analysis technique would be the most effective at detecting differences in dynamic stability between healthy subjects and subjects with functional ankle instability (FAI). METHODS:Fifty-eight subjects participated in this investigation: 29 healthy individu...

journal_title：Medicine and science in sports and exercise

authors： Wikstrom EA,Tillman MD,Borsa PA

更新日期：2005-02-01 00:00:00

abstract：BACKGROUND:Pedometry methods for collecting data in young populations are advancing, but it is unclear how many days of data are enough for population monitoring. METHODS:Using random-digit dialing, 11,669 5- to 19-yr-olds were recruited into the Canadian Physical Activity Levels among Youth study and mailed a data co...

journal_title：Medicine and science in sports and exercise

authors： Craig CL,Tudor-Locke C,Cragg S,Cameron C

更新日期：2010-03-01 00:00:00