Myocardial perfusion and perfusion reserve in endurance-trained men.

abstract：PURPOSE:beta2 adrenergic agonists are widely used as doping agents. Their side effects on bone, especially microarchitecture, remain unknown. The purpose of this study was to evaluate the effects of chronic clenbuterol and salbutamol treatment on bones of growing rats. METHODS:Twelve-week-old Wistar female rats were d...

journal_title：Medicine and science in sports and exercise

authors： Bonnet N,Brunet-Imbault B,Arlettaz A,Horcajada MN,Collomp K,Benhamou CL,Courteix D

更新日期：2005-09-01 00:00:00

abstract：PURPOSE:The purpose of this study was to investigate neuromuscular characteristics and muscle power as determinants of distance running performance. METHODS:Seventeen male endurance athletes performed a 5-km time trial (5K) that included three separate constant-velocity 200-m laps during the course and a maximal 20-m ...

journal_title：Medicine and science in sports and exercise

authors： Paavolainen LM,Nummela AT,Rusko HK

更新日期：1999-01-01 00:00:00

abstract：PURPOSE:Circulating angiogenic cells (CAC) comprise multiple subpopulations of exercise-inducible peripheral blood mononuclear cells (PBMC) that promote angiogenesis and maintain endothelial integrity. We examined the effect of acute maximal exercise on CD31, CD62E, CD14/CD31, CD34/VEGFR2, CD3/CD31, and CD3 PBMC in you...

journal_title：Medicine and science in sports and exercise

authors： Shill DD,Marshburn MP,Hempel HK,Lansford KA,Jenkins NT

更新日期：2016-12-01 00:00:00

abstract：PURPOSE:To investigate the effects of blood flow restriction (BFR) combined with electrical muscle stimulation (EMS) on skeletal muscle mass and strength during a period of limb disuse. METHODS:Thirty healthy participants (22 ± 3 years; 23 ± 3 kg·m) were randomly assigned to either: control (CON; n=10), BFR alone (BFR...

journal_title：Medicine and science in sports and exercise

authors： Slysz JT,Boston M,King R,Pignanelli C,Power GA,Burr JF

更新日期：2020-10-22 00:00:00

abstract：PURPOSE:Compelling evidence suggests larger performance decrements during hypoxic versus normoxic repeated sprinting. Yet the underlying mechanical alterations have not been thoroughly investigated. Therefore, we examined the effects of different levels of normobaric hypoxia on running mechanical performance during rep...

journal_title：Medicine and science in sports and exercise

authors： Brocherie F,Millet GP,Morin JB,Girard O

更新日期：2016-08-01 00:00:00

abstract：:Due to the invasiveness of direct techniques and problems that constrain the use of popular indirect techniques during very heavy (non-steady-state) exercise, measurements of maximal cardiac output are seldom included in studies of exercise. The acetylene-rebreathing technique is well-suited for maximal exercise; howe...

journal_title：Medicine and science in sports and exercise

authors： Smyth RJ,Gledhill N,Froese AB,Jamnik VK

更新日期：1984-10-01 00:00:00

abstract：:The gravity-dependency and age-dependency of noradrenergic vasoconstrictor outflow to skeletal muscle (muscle sympathetic nerve activity; MSNA) in humans was analyzed by applying microneurography technique. The basal level of MSNA in the horizontally supine position increased with aging without significant changes in ...

journal_title：Medicine and science in sports and exercise

authors： Mano T

更新日期：1996-10-01 00:00:00

abstract：UNLABELLED:Two recently identified glucose transporters, GLUT8 and GLUT12, are expressed in human skeletal muscle and may be involved in insulin-mediated sugar transport. PURPOSE:The purpose of this study was to measure GLUT8 and GLUT12 mRNA levels in endurance-trained versus sedentary individuals in an effort to dete...

journal_title：Medicine and science in sports and exercise

authors： Seki Y,Berggren JR,Houmard JA,Charron MJ

更新日期：2006-06-01 00:00:00

abstract：PURPOSE:To investigate the effects of strenuous exercise on heart rate variability (HRV). METHODS:We evaluated the effects of exercise intensity and duration on HRV indices in 14 healthy trained subjects. Each subject exercised for 3, 6, and 9 min at 60 and 70% of the power achieved at maximal oxygen consumption (PVO2...

journal_title：Medicine and science in sports and exercise

authors： Pichon AP,de Bisschop C,Roulaud M,Denjean A,Papelier Y

更新日期：2004-10-01 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:To describe the influence of caffeine on physiological responses to exercise in young children and determine whether sex differences in these responses exist. METHODS:Twenty-six healthy 7- to 9-yr-old boys and 26 healthy 7- to 9-yr-old girls volunteered to participate in a double-blind, randomized, double cros...

journal_title：Medicine and science in sports and exercise

authors： Turley KR,Gerst JW

更新日期：2006-03-01 00:00:00

abstract：:Influence of post-surgery time after cardiac transplantation on exercise responses. Med. Sci. Sports Exerc., Vol. 28, No. 2, pp. 171-175, 1996. To test the hypothesis that exercise response changes with time after cardiac transplantation, we investigated the cardiorespiratory responses of nine orthotopic heart transpl...

journal_title：Medicine and science in sports and exercise

authors： Mercier J,Ville N,Wintrebert P,Caillaud C,Varray A,Albat B,Thévenet A,Préfaut C

更新日期：1996-02-01 00:00:00

abstract：PURPOSE:There is increased interest in developing and disseminating health behavior interventions for cancer survivors. Challenges in these efforts include participant burden in traveling to central intervention sites and sustainability. The purpose of this article is to report various methods used to recruit breast ca...

journal_title：Medicine and science in sports and exercise

authors： Rogerino A,Grant LL,Wilcox H 3rd,Schmitz KH

更新日期：2009-07-01 00:00:00

abstract：PURPOSE:Previous studies have suggested that extreme endurance exercise may induce cardiac microdamage that could lead to subsequent myocardial fibrosis. Soluble suppression of tumorigenicity 2 (sST2) is a cardiac biomarker for assessment of myocardial fibrosis, inflammation, and strain. We evaluated baseline and exerc...

journal_title：Medicine and science in sports and exercise

authors： Aengevaeren VL,VAN Kimmenade RRJ,Hopman MTE,VAN Royen N,Snider JV,Januzzi JL,George KP,Eijsvogels TMH

更新日期：2019-03-01 00:00:00

abstract：:A variety of physiological responses, classified as local or central factors, have been suggested as providing the primary input for perception of effort during exercise. The potency of these responses as perceptual cues, however, has seldom been addressed in terms of relevant modifying variables such as exercise inte...

journal_title：Medicine and science in sports and exercise

authors： Mihevic PM

更新日期：1981-01-01 00:00:00

abstract：INTRODUCTION:The purpose of this study was to validate a parent proxy record of children's physical activity with CSA Model 7164 accelerometers. METHODS:A parent proxy record was developed to record children's activity after school on weekdays and all day long on weekends for 7 d. Parents recorded both duration and in...

journal_title：Medicine and science in sports and exercise

authors： Bender JM,Brownson RC,Elliott MB,Haire-Joshu DL

更新日期：2005-08-01 00:00:00

abstract：INTRODUCTION:Alternative high school (AHS) students are an underserved population of youth at greater risk for poor health behaviors and outcomes. Little is known about their physical activity patterns. PURPOSE:: The purpose of this study was to describe 1) physical activity levels of students attending alternative hi...

journal_title：Medicine and science in sports and exercise

authors： Sirard JR,Kubik MY,Fulkerson JA,Arcan C

更新日期：2008-12-01 00:00:00

abstract：:This study compared the effects of exercise or TXB2 and beta-TG when evaluated by four methods: 1) not adjusted; 2) adjusted for plasma volume changes (PV); 3) standardized per 10(5) platelets (PC); 4) or both PC and PV (PC-PV). Blood was collected from 16 men (41.3 +/- 8.1 yr) at rest after 30 min of exercise (IPE) a...

journal_title：Medicine and science in sports and exercise

authors： Todd MK,Goldfarb AH,Burleson C

更新日期：1997-05-01 00:00:00

abstract：PURPOSE:The purpose of the study was to explore the utility of school- and county-level variables in explaining variability in children and adolescent body mass index (BMI). METHODS:BMI data from nearly 2.5 million of children and adolescents were aggregated at the school level from more than 5000 schools in Texas. Sc...

journal_title：Medicine and science in sports and exercise

authors： Bai Y,Welk GJ

更新日期：2017-09-01 00:00:00

abstract：PURPOSE:To quantify variations in plantar pressure variables in healthy adults across five cardiovascular exercises. METHODS:Ten young (19-35 yr old) and 10 middle-aged (45-60 yr old) individuals participated. After equipment familiarization, plantar pressure data were recorded during walking, running, elliptical trai...

journal_title：Medicine and science in sports and exercise

authors： Burnfield JM,Jorde AG,Augustin TR,Augustin TA,Bashford GR

更新日期：2007-11-01 00:00:00

abstract：:The effects of a 7% carbohydrate-electrolyte drink (CE) and an artificially sweetened placebo (P) on performance and physiological function were compared during a 40-km run in the heat. Eight highly trained male runners completed two runs on a measured outdoor course. The first 35 km of each run was performed at self-...

journal_title：Medicine and science in sports and exercise

authors： Millard-Stafford ML,Sparling PB,Rosskopf LB,DiCarlo LJ

更新日期：1992-08-01 00:00:00

abstract：PURPOSE:The development of valid measures of built environments relevant for physical activity is an important step toward controlling the global epidemic of physical inactivity-related noncommunicable diseases and deaths. This study assessed the construct validity of a self-report neighborhood environment walkability ...

journal_title：Medicine and science in sports and exercise

authors： Oyeyemi AL,Conway TL,Adedoyin RA,Akinroye KK,Aryeetey R,Assah F,Cain KL,Gavand KA,Kasoma SS,Kolbe-Alexander TL,Lambert EV,Larouche R,Moss SJ,Ocansey R,Onywera VO,Prista A,Tremblay MS,Sallis JF

更新日期：2017-03-01 00:00:00

abstract：PURPOSE:The primary study aim was to evaluate associations of estimated weekly minutes of moderate-to-vigorous-intensity exercise from self-reports of the telephone-administered 7-Day Physical Activity Recall (7-Day PAR) with data captured by the RT3 triaxial accelerometer. METHODS:This investigation was undertaken as...

journal_title：Medicine and science in sports and exercise

authors： Sloane R,Snyder DC,Demark-Wahnefried W,Lobach D,Kraus WE

更新日期：2009-06-01 00:00:00

abstract：PURPOSE:Elevated rates of cardiometabolic diseases have been observed in former American football players. The current study sought to determine whether change in body mass index (ΔBMI) after retirement influences the prevalence of CHD, diabetes, or high blood pressure (HBP) in former professional football players. ME...

journal_title：Medicine and science in sports and exercise

authors： Trexler ET,Smith-Ryan AE,Defreese JD,Marshall SW,Guskiewicz KM,Kerr ZY

更新日期：2018-04-01 00:00:00

abstract：PURPOSE:Pedometers may provide valuable information regarding the ambulatory patterns of adolescents, but the effects of body mass index (BMI) on pedometer accuracy in this population are unknown.The purpose of this study was twofold: 1) to determine whether the New Lifestyles NL-2000 (NL) and the Digi-Walker SW-200 (D...

journal_title：Medicine and science in sports and exercise

authors： Tyo BM,Bassett DR Jr,Coe DP,Feito Y,Thompson DL

更新日期：2013-03-01 00:00:00

abstract：PURPOSE:Splanchnic hypoperfusion is a physiological phenomenon during strenuous exercise. It has been associated with gastrointestinal symptoms and intestinal injury and may hamper athletic performance. We hypothesized that L-citrulline supplementation improves splanchnic perfusion and decreases intestinal injury by en...

journal_title：Medicine and science in sports and exercise

authors： van Wijck K,Wijnands KA,Meesters DM,Boonen B,van Loon LJ,Buurman WA,Dejong CH,Lenaerts K,Poeze M

更新日期：2014-11-01 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：PURPOSE:This study was designed to determine changes in metabolic and cardiovascular risk factors following normobaric hypoxic exercise training in healthy men. METHODS:Following a randomized baseline maximal exercise test in hypoxia and/or normoxia, 34 physically active subjects were randomly assigned to either a nor...

journal_title：Medicine and science in sports and exercise

authors： Bailey DM,Davies B,Baker J

更新日期：2000-06-01 00:00:00

abstract：PURPOSE:Supplementation with inorganic nitrate has been suggested to be an ergogenic aid for athletes as nitric oxide donor. The purpose of this study was to determine whether ingestion of inorganic sodium nitrate benefits well-trained athletes performing a 40-min exercise test in laboratory conditions. In addition, we...

journal_title：Medicine and science in sports and exercise

authors： Bescós R,Ferrer-Roca V,Galilea PA,Roig A,Drobnic F,Sureda A,Martorell M,Cordova A,Tur JA,Pons A

更新日期：2012-12-01 00:00:00

abstract：PURPOSE:This study, theoretically based on the Exercise Self-Esteem Model, EXSEM, examined effects of exercise modality on physical and global self-esteem (PSE, GSE) in breast cancer survivors. The EXSEM posits GSE at the apex with PSE feeding into GSE. PSE has three subdomains: physical condition (PC), attractive body...

journal_title：Medicine and science in sports and exercise

authors： Musanti R

更新日期：2012-02-01 00:00:00