Physiologic and structural indices of vascular function in paraplegics.

abstract：INTRODUCTION:Recent data indicate a direct relationship between the sympathetic nervous system and bone metabolism. The purpose of this study was to evaluate the effects of a beta-1 adrenergic (Adrb1) agonist, dobutamine (DOB), on disuse-induced changes in bone integrity during 28 d of hindlimb unloading (HU). METHODS...

journal_title：Medicine and science in sports and exercise

authors： Swift JM,Hogan HA,Bloomfield SA

更新日期：2013-09-01 00:00:00

abstract：:The knee joints of 81 veteran soccer players between ages 40 and 74 were examined. An analysis of and relationships between soccer practice at a top level, osteoarthritis, meniscectomy, and leg axes were evaluated. One-hundred and sixty-two knees were assessed through clinical examination and X-ray examination using a...

journal_title：Medicine and science in sports and exercise

authors： Chantraine A

更新日期：1985-08-01 00:00:00

abstract：PURPOSE:To determine whether a low-cost, commercially available global positioning system (GPS) can be used to study outdoor walking of healthy subjects, allowing the detection of walking and resting (nonwalking) periods and the accurate estimation of speed and distance of each walking periods. METHODS:The same EGNOS-...

journal_title：Medicine and science in sports and exercise

authors： Le Faucheur A,Abraham P,Jaquinandi V,Bouyé P,Saumet JL,Noury-Desvaux B

更新日期：2007-09-01 00:00:00

abstract：:Twelve male swimmers were studied psychologically before, during, and after 10 d of increased training. Daily training distance was increased from 4,000 to 9,000 m.d-1, and intensity was maintained at 94% of VO2max. Three of the swimmers were unable to tolerate the increased training load, and they did the same distan...

journal_title：Medicine and science in sports and exercise

authors： Morgan WP,Costill DL,Flynn MG,Raglin JS,O'Connor PJ

更新日期：1988-08-01 00:00:00

abstract：PURPOSE:The purpose of this investigation was to determine whether whole body composition could be estimated in tall individuals using summed measures from two partial DXA scans. METHODS:Using a pencil-beam DXA, a convenience sample of young individuals (N = 19) were scanned three times. Two partial scans of the upper...

journal_title：Medicine and science in sports and exercise

authors： Evans EM,Prior BM,Modlesky CM

更新日期：2005-07-01 00:00:00

abstract：:The purpose of this investigation was to determine the influence of post-exercise carbohydrate (CHO) intake on the rate of muscle glycogen resynthesis after high intensity weight resistance exercise in subjects not currently weight training. In a cross-over design, eight male subjects performed sets (mean = 8.8) of si...

journal_title：Medicine and science in sports and exercise

authors： Pascoe DD,Costill DL,Fink WJ,Robergs RA,Zachwieja JJ

更新日期：1993-03-01 00:00:00

abstract：PURPOSE:To examine whether components of body composition (size, fat mass, and fat-free mass) were related to physical activity. METHODS:A random sample of 60 eligible sixth grade girls at each of 36 schools (six schools per region and six regions in total sample); complete measurements on 1,553 girls. Physical activi...

journal_title：Medicine and science in sports and exercise

authors： Lohman TG,Ring K,Schmitz KH,Treuth MS,Loftin M,Yang S,Sothern M,Going S

更新日期：2006-06-01 00:00:00

abstract：PURPOSE:Traction-induced injury, related to muscles of the superficial and deep posterior compartments, has been implicated as the cause of medial tibial stress syndrome (MTSS) with symptoms commonly occurring in the distal third of the posteromedial tibia. Standard anatomic texts do not identify this region as an atta...

journal_title：Medicine and science in sports and exercise

authors： Stickley CD,Hetzler RK,Kimura IF,Lozanoff S

更新日期：2009-11-01 00:00:00

abstract：PURPOSE:The purpose of the study was to determine the effect of a home-based cycling program for women with a recent diagnosis of gestational diabetes mellitus (GDM) on aerobic fitness, weight gain, self-reported mobility, attitude, and intentions toward maternal exercise, and obstetric and neonatal outcomes. METHODS:...

journal_title：Medicine and science in sports and exercise

authors： Halse RE,Wallman KE,Dimmock JA,Newnham JP,Guelfi KJ

更新日期：2015-08-01 00:00:00

abstract：PURPOSE:This study examines the usefulness of complementing accelerometry-based physical activity measurement with spatial data from portable global positioning system (GPS) units to determine where physical activity occurs. METHODS:First, using the geographic distribution of data points and Bland-Altman plots, we exa...

journal_title：Medicine and science in sports and exercise

authors： Rodríguez DA,Brown AL,Troped PJ

更新日期：2005-11-01 00:00:00

abstract：PURPOSE:Aerodynamic drag plays an important role in performance for athletes practicing sports that involve high-velocity motions. In giant slalom, the skier is continuously changing his/her body posture, and this affects the energy dissipated in aerodynamic drag. It is therefore important to quantify this energy to un...

journal_title：Medicine and science in sports and exercise

authors： Meyer F,Le Pelley D,Borrani F

更新日期：2012-06-01 00:00:00

abstract：PURPOSE:This study was undertaken to determine whether endurance training is associated with changes in myocardial perfusion in humans. METHODS:Myocardial perfusion was measured in eleven trained and nine sedentary men at rest and during adenosine-stimulated hyperemia using positron emission tomography (PET). Left ven...

journal_title：Medicine and science in sports and exercise

authors： Kalliokoski KK,Nuutila P,Laine H,Luotolahti M,Janatuinen T,Raitakari OT,Takala TO,Knuuti J

更新日期：2002-06-01 00:00:00

abstract：PURPOSE:To investigate the use of Tritrac accelerometers to measure energy expenditure (EE) of various activities for women in the field setting, as compared with portable indirect calorimetry. METHODS:Twenty women (age 20-29) performed a choreographed routine of six activities (walking, jogging, stair climbing, walki...

journal_title：Medicine and science in sports and exercise

authors： Campbell KL,Crocker PR,McKenzie DC

更新日期：2002-10-01 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：:Running technique and economy (VO2submax) were examined before and after a 6-wk period of running training. Fifteen males were filmed and performed 10-min economy runs at 3.36 m.s-1 on a treadmill. An incremental treadmill test was used to record running performance and maximal oxygen consumption (VO2max). Subjects we...

journal_title：Medicine and science in sports and exercise

authors： Lake MJ,Cavanagh PR

更新日期：1996-07-01 00:00:00

abstract：PURPOSE:Few epidemiological studies have been conducted among middle-aged women on long-term total and specific physical activity (PA) trends. We studied in a cross-sectional setting the relationship of self-reported total daily PA with age and calendar time. METHODS:In a population-based cohort of 38,988 women aged 4...

journal_title：Medicine and science in sports and exercise

authors： Orsini N,Bellocco R,Bottai M,Pagano M,Wolk A

更新日期：2006-02-01 00:00:00

abstract：INTRODUCTION:Common life events, such as getting married or gaining employment, may be opportunities to intervene on health behaviors like physical activity. The purpose of this study was to determine the changes in moderate-to-vigorous physical activity (MVPA) associated with several common life events from adolescenc...

journal_title：Medicine and science in sports and exercise

authors： Miller J,Nelson T,Barr-Anderson DJ,Christoph MJ,Winkler M,Neumark-Sztainer D

更新日期：2019-04-01 00:00:00

abstract：INTRODUCTION:The significant sex disparity in sports-related knee injuries may be due to underlying differences in motor control. Although the development of sex-specific movement patterns is likely multifactorial, this study specifically focuses on the potential modulatory role of sex hormones. PURPOSE:This study aim...

journal_title：Medicine and science in sports and exercise

authors： Casey E,Hameed F,Dhaher YY

更新日期：2014-03-01 00:00:00

abstract：PURPOSE:To compare training loads between men and women during 14 wk of British Army standard entry basic training. METHODS:Thirty-one male (mean ± SD: age, 21 ± 4 yr; height, 1.78 ± 0.08 m; mass, 77.1 ± 10.5 kg) and 28 female (age, 22 ± 4 yr; height, 1.65 ± 0.05 m; mass, 63.9 ± 8.9 kg) British Army recruits had exter...

journal_title：Medicine and science in sports and exercise

authors： O'Leary TJ,Saunders SC,McGuire SJ,Venables MC,Izard RM

更新日期：2018-12-01 00:00:00

abstract：:Existing cross-sectional studies on plasma catecholamine activity provide no support for the concept that a markedly high level of aerobic fitness modifies sympathoadrenal response to an acute psychological challenge in humans. In contrast, compromised sympathetic nervous system activity has been observed in individua...

journal_title：Medicine and science in sports and exercise

authors： Sothmann MS,Hart BA,Horn TS

更新日期：1991-07-01 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：:The use of 14C as tracer to measure lactate turnover and oxidation and its role in gluconeogenesis are discussed. Lactate is formed as well as utilized in many cells, and most of it in the body is present within cells so that interpretation of 14C data from labelled lactate is more complex and more difficult than that...

journal_title：Medicine and science in sports and exercise

authors： Katz J

更新日期：1986-06-01 00:00:00

abstract：:Eight older (52 to 62 yr old) post-menopausal and 8 younger (20 to 30 yr old) women were matched with respect to body size, fatness, and maximal oxygen consumption, heat-acclimated, and then exercised at 35 to 40% maximal oxygen consumption in a warm-humid (37 degrees C, 60% relative humidity) environment. Results wer...

journal_title：Medicine and science in sports and exercise

authors： Kenney WL,Anderson RK

更新日期：1988-04-01 00:00:00

abstract：PURPOSE:Physical activity plays an important role in the prevention of many serious diseases. To develop targeted strategies that encourage physical activity, knowledge of stability of physical activity levels over time is essential. The aim of this study was to examine tracking of leisure time physical activity in adu...

journal_title：Medicine and science in sports and exercise

authors： Morseth B,Jørgensen L,Emaus N,Jacobsen BK,Wilsgaard T

更新日期：2011-07-01 00:00:00

abstract：OBJECTIVE:To examine the effect of an increase in roller ski rolling resistance on the physiological and upper body demands of roller skiing with the V2-alternate technique. METHODS:Nine highly skilled cross-country skiers roller skied at three paced speeds on a flat oval loop using roller skis with high (HiR) and low...

journal_title：Medicine and science in sports and exercise

authors： Millet GY,Hoffman MD,Candau RB,Buckwalter JB,Clifford PS

更新日期：1998-05-01 00:00:00

abstract：PURPOSE:Recovery of ambulatory function after stroke is routinely assessed using standardized subject- or observer-rated instruments that do not directly measure ambulatory activities in the home-community setting. Accuracy of conventional pedometers in stroke patients is not established, limiting their application in ...

journal_title：Medicine and science in sports and exercise

authors： Macko RF,Haeuber E,Shaughnessy M,Coleman KL,Boone DA,Smith GV,Silver KH

更新日期：2002-03-01 00:00:00

abstract：INTRODUCTION:This study examined the effect of endurance exercise on dendritic arborization in the dentate gyrus subregion in rodents exposed to a predator scent stress (PSS). METHODS:Sprague-Dawley rats were randomly assigned to one of four treatment groups. In two of the groups, rats were unexposed to PSS but either...

journal_title：Medicine and science in sports and exercise

authors： Hoffman JR,Cohen H,Ostfeld I,Kaplan Z,Zohar J,Cohen H

更新日期：2016-12-01 00:00:00

abstract：PURPOSE:We evaluated the associations between accelerometer-estimated physical activity (PA) intensity and heart rate variability (HRV) and examined mediation of these associations by glycemic control indices and other cardiovascular disease risk factors. METHODS:Data were from 1668 participants (X[Combining Overline]...

journal_title：Medicine and science in sports and exercise

authors： Pope ZC,Gabriel KP,Whitaker KM,Chen LY,Schreiner PJ,Jacobs DR Jr,Sternfeld B,Carr JJ,Lloyd-Jones DM,Pereira MA

更新日期：2020-06-01 00:00:00

abstract：PURPOSE:The purpose of this study was to establish a highly reproducible test to measure endurance performance in runners. METHODS:We evaluated the reproducibility of endurance performance during a 10-km time trial performed on a treadmill after a 90-min preload run at 65% of maximal oxygen uptake VO2max). After scree...

journal_title：Medicine and science in sports and exercise

authors： Russell RD,Redmann SM,Ravussin E,Hunter GR,Larson-Meyer DE

更新日期：2004-04-01 00:00:00

abstract：PURPOSE:The purposes of this study were 1) to add layers and features to a previously published fully automated algorithm designed to identify children's nocturnal sleep and to exclude episodes of nighttime nonwear/wakefulness and potentially misclassified daytime sleep episodes and 2) to validate this refined sleep al...

journal_title：Medicine and science in sports and exercise

authors： Barreira TV,Schuna JM Jr,Mire EF,Katzmarzyk PT,Chaput JP,Leduc G,Tudor-Locke C

更新日期：2015-05-01 00:00:00