Increase of free and total testosterone during submaximal exercise in normal males.

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：:In a cross-sectional study using a two-stage probability sample (N = 1,600) of the population of Northern Ireland, there was an inverse association between the highest recorded recent activity and total cholesterol (P < or = 0.01), LDL (P < or = 0.01), triglyceride (P < or = 0.05) and Chol:HDL ratio (P < or = 0.001) i...

journal_title：Medicine and science in sports and exercise

authors： MacAuley D,McCrum EE,Stott G,Evans AE,Duly E,Trinick T,Sweeney K,Boreham CA

更新日期：1996-06-01 00:00:00

abstract：:The association of physical activity to the initiation of health risk behaviors was examined in a 3-yr prospective study of a population-based cohort of 1245 adolescents aged 12-16 yr. Four hundred thirty-seven students (35% of the cohort) were identified at baseline via self-report survey as never having smoked cigar...

journal_title：Medicine and science in sports and exercise

authors： Aaron DJ,Dearwater SR,Anderson R,Olsen T,Kriska AM,Laporte RE

更新日期：1995-12-01 00:00:00

abstract：:The present study was designed to assess the effects of acute exercise and short-term intensive training on catechol-O-methyltransferase (COMT) activity. COMT inactivates catecholamines and converts primary catecholestrogens (CE) into their O-methylated form yielding the 2- (2-MeOE) and 4-methoxyestrogens (4-MeOE). Bl...

journal_title：Medicine and science in sports and exercise

authors： De Crée C,Van Kranenburg G,Geurten P,Fujimura Y,Keizer HA

更新日期：1997-12-01 00:00:00

abstract：:The immune response was assessed in 13 competitive bodybuilders self-administering anabolic-androgenic steroids and ten competitive bodybuilders not administering these drugs. Laboratory assessment included the number and relative distribution of T-cells, T-helper/inducer cells, T-cytotoxic/suppressor cells, activated...

journal_title：Medicine and science in sports and exercise

authors： Calabrese LH,Kleiner SM,Barna BP,Skibinski CI,Kirkendall DT,Lahita RG,Lombardo JA

更新日期：1989-08-01 00:00:00

abstract：INTRODUCTION:Inhaled beta2-agonists are important therapeutic agents for the treatment of exercise-induced asthma in athletes but are restricted by international antidoping regulations. PURPOSE:To investigate whether 18 mug of inhaled formoterol affects endurance performance during running at high altitudes until exha...

journal_title：Medicine and science in sports and exercise

authors： Riiser A,Tjørhom A,Carlsen KH

更新日期：2006-12-01 00:00:00

abstract：PURPOSE:This study aimed to determine whether competitive intermittent exercise in the heat affects recovery, aggravates markers of muscle fiber damage, and delays the recovery of performance and muscle glycogen stores. METHODS:Plasma creatine kinase, serum myoglobin, muscle glycogen, and performance parameters (sprin...

journal_title：Medicine and science in sports and exercise

authors： Nybo L,Girard O,Mohr M,Knez W,Voss S,Racinais S

更新日期：2013-05-01 00:00:00

abstract：:During exercise, especially endurance exercise in the heat, vital body fluids and essential ions are lost in sweat, and the body may deplete its glycogen stores. Unless essential body fluids are restored, these conditions can produce hypovolemia, hypoglycemia, hyponatremia, hyperthermia, and dehydration. Performance m...

journal_title：Medicine and science in sports and exercise

authors： Gisolfi CV,Duchman SM

更新日期：1992-06-01 00:00:00

abstract：PURPOSE:We evaluated the impact of anthracyclines on left ventricular function and myocardial tissue characteristics using cardiovascular magnetic resonance (CMR) imaging to determine their relationship with V˙O2peak. METHODS:Women with breast cancer who had not yet received treatment (No-AT, n = 16) and had received ...

journal_title：Medicine and science in sports and exercise

authors： Kirkham AA,Paterson DI,Haykowsky MJ,Beaudry RI,Mackey JR,Pituskin E,Grenier JG,Thompson RB

更新日期：2021-02-01 00:00:00

abstract：PURPOSE:Few data on the effect of exercise interventions in black women at risk for cardiovascular disease are available. METHODS:Women ≥18 yr of age without known cardiovascular disease with ≥1 coronary risk factor were enrolled in a community-based exercise program ≥3 d·wk for ≥30 min per session for 6 months. Exerc...

journal_title：Medicine and science in sports and exercise

authors： Bowdon M,Marcovitz P,Jain SK,Boura J,Liroff KG,Franklin BA

更新日期：2018-07-01 00:00:00

abstract：PURPOSE:The purpose of this study was to determine whether muscle power, activation time, and neuromuscular stimulation are related to physical activity patterns in older women. METHODS:Forty women (65-84 yr) were assigned to high-active (HA) and low-active (LA) groups on the basis of a historical activity questionnai...

journal_title：Medicine and science in sports and exercise

authors： Laroche DP,Knight CA,Dickie JL,Lussier M,Roy SJ

更新日期：2007-09-01 00:00:00

abstract：:The relationships between individual performance and lactate exchange and removal abilities were studies in 12 male rowers all subjected to three measurements on a rowing ergometer. An incremental exercise carried out to determine the maximal oxygen uptake (VO2max) and the corresponding maximal aerobic power (Pamax), ...

journal_title：Medicine and science in sports and exercise

authors： Messonnier L,Freund H,Bourdin M,Belli A,Lacour JR

更新日期：1997-03-01 00:00:00

abstract：:The field of developmental neurobiology is entering a very exciting phase, in which the application of new techniques promises to lead to major advances in our understanding of basic developmental processes. There is a need to apply much of this new knowledge to problems of spinal cord and muscle development, about wh...

journal_title：Medicine and science in sports and exercise

authors： O'Donovan MJ

更新日期：1985-02-01 00:00:00

abstract：:The influence of somatotype on the validity of anthropometric prediction of body density (Db) in young women (N = 92) was investigated. Three groups of predominantly endomorph (N = 27), mesomorph (N = 35), and ectomorph (N = 30) women were identified by the Heath-Carter and Sheldon somatotyping methods. Discriminant a...

journal_title：Medicine and science in sports and exercise

authors： Bulbulian R

更新日期：1984-08-01 00:00:00

abstract：PURPOSE:The purpose of the present study was to examine the effect of increased protein intake on short-term decrements in endurance performance during a block of high-intensity training. METHODS:Trained male cyclists (VO(2max) = 64.2 ± 6.5 mL·kg(-1)·min(-1)) completed two 3-wk trials both divided equally into normal ...

journal_title：Medicine and science in sports and exercise

authors： Witard OC,Jackman SR,Kies AK,Jeukendrup AE,Tipton KD

更新日期：2011-04-01 00:00:00

abstract：:Red blood cells obtained from well-trained athletes consumed glucose at a higher rate than those from sedentary subjects when incubated in vitro in a glucose containing medium at 37 degrees C. Similar results were obtained when fructose was substituted for glucose, but not when galactose was the monosaccharide. The ut...

journal_title：Medicine and science in sports and exercise

authors： Fornaini G,Dachà M,Accorsi A,Fazi A,Piatti E

更新日期：1981-01-01 00:00:00

abstract：PURPOSE:Aerobic training of professional road cyclists is linked to tremendous aerobic capacities that have never been clearly related to what occur in skeletal muscles submitted to a specific exercise. The aim of the present study was to examine specifically metabolic recovery after an incremental cycling exercise per...

journal_title：Medicine and science in sports and exercise

authors： Hug F,Bendahan D,Le Fur Y,Cozzone PJ,Grélot L

更新日期：2005-05-01 00:00:00

abstract：:Relatively few studies have assessed the prospective relationship of sedentary lifestyle and coronary heart disease (CHD) in women. We performed a nested case-control study, identifying 50 cases of acute CHD in women and 150 age-matched controls. Risk factors including sedentary lifestyle, cigarette smoking, hypertens...

journal_title：Medicine and science in sports and exercise

authors： Eaton CB,Lapane KL,Garber CA,Assaf AR,Lasater TM,Carleton RA

更新日期：1995-11-01 00:00:00

abstract：PURPOSE:The purpose of the study was to investigate the core temperature responses to the induction of electrical exercise and to clarify whether an increase in temperature could be responsible for some of the observed reactions to acute and repeated exposure to electrical muscle stimulation. METHODS:The paralyzed thi...

journal_title：Medicine and science in sports and exercise

authors： Holme E,Mohr T,Kjaer M,Nielsen B

更新日期：2001-03-01 00:00:00

abstract：:In the present studies, the Leuven Tennis Performance Test (LTPT), a newly developed test procedure to measure stroke performance in match-like conditions in elite tennis players, was evaluated as to its value for research purposes. The LTPT is enacted on a regular tennis court. It consists of first and second service...

journal_title：Medicine and science in sports and exercise

authors： Vergauwen L,Spaepen AJ,Lefevre J,Hespel P

更新日期：1998-08-01 00:00:00

abstract：:Data obtained from 16-mm film of world caliber Olympic weight lifters performing at major competitions were analyzed to study energy changes during body segment and barbell movements, energy transfer to the barbell, and energy transfer between segments during the lifting movements contested. Determination of barbell a...

journal_title：Medicine and science in sports and exercise

authors： Garhammer J

更新日期：1982-01-01 00:00:00

abstract：INTRODUCTION:Chronic unimanual motor practice increases the motor output not only in the trained but also in the nonexercised homologous muscle in the opposite limb. We examined the hypothesis that adaptations in motor cortical excitability of the nontrained primary motor cortex (iM1) and in interhemispheric inhibition...

journal_title：Medicine and science in sports and exercise

authors： Hortobágyi T,Richardson SP,Lomarev M,Shamim E,Meunier S,Russman H,Dang N,Hallett M

更新日期：2011-07-01 00:00:00

abstract：PURPOSE:Stroke volume response to exercise depends on changes in cardiac filling, intrinsic myocardial contractility, and left ventricular afterload. The purpose of this study was to compare these responses during an upright cycle test performed until exhaustion in children and adults. METHODS:Stroke volume, cardiac o...

journal_title：Medicine and science in sports and exercise

authors： Nottin S,Vinet A,Stecken F,Nguyen LD,Ounissi F,Lecoq AM,Obert P

更新日期：2002-03-01 00:00:00

abstract：:This article focuses on sports related spinal cord and nerve injuries, ranging from mild "stinger" syndrome to complete quadriplegia. Particular emphasis is placed on recommendations for return to competition after such injuries. Cervical spinal cord symptoms after a spine injury from contact sports require a more pre...

journal_title：Medicine and science in sports and exercise

authors： Cantu RC

更新日期：1997-07-01 00:00:00

abstract：PURPOSE:We examined the effect of regular physical activity on plasma ghrelin concentration after onset of puberty in girls. In addition, we also examined the association of fasting plasma ghrelin concentration with various plasma biochemical, body composition, and aerobic capacity variables in healthy adolescent girls...

journal_title：Medicine and science in sports and exercise

authors： Jürimäe J,Cicchella A,Jürimäe T,Lätt E,Haljaste K,Purge P,Hamra J,von Duvillard SP

更新日期：2007-10-01 00:00:00

abstract：PURPOSE:This study aimed to examine the effects of footwear and neuromuscular fatigue induced by short distance trail running (TR) on running economy (RE) and biomechanics in well-trained and traditionally shod runners. METHODS:RE, vertical and leg stiffness (Kvert and Kleg), as well as foot strike angle were measured...

journal_title：Medicine and science in sports and exercise

authors： Vercruyssen F,Tartaruga M,Horvais N,Brisswalter J

更新日期：2016-10-01 00:00:00

abstract：PURPOSE:To comprehensively quantify through daily, serial measures changes in knee laxity as a function of changing sex-hormone levels across one complete menstrual cycle. METHODS:Twenty-five females, 18 - 30 yr, body mass index < or = 30, who reported normal menstrual cycles (28-32 d) over the past 6 months participa...

journal_title：Medicine and science in sports and exercise

authors： Shultz SJ,Kirk SE,Johnson ML,Sander TC,Perrin DH

更新日期：2004-07-01 00:00:00

abstract：PURPOSE:To determine whether physical performance adaptation is impaired in smokers during early stages of military training and to examine some of the putative mechanistic candidates that could explain any impairment. METHODS:We examined measures of oxidative stress (malondialdehyde [MDA], lipid hydroperoxides), infl...

journal_title：Medicine and science in sports and exercise

authors： Siddall A,Bilzon J,Thompson D,Tauler P,Greeves J,Izard R,Stokes K

更新日期：2020-05-01 00:00:00

abstract：PURPOSE:The purpose of this study was to examine the impact of exercise-induced metabolic stress on hormonal responses and chronic muscular adaptations. METHODS:We compared the acute and long-term effects of an "NR regimen" (no-rest regimen) and those of a "WR regimen" (regimen with rest period within a set). Twenty-s...

journal_title：Medicine and science in sports and exercise

authors： Goto K,Ishii N,Kizuka T,Takamatsu K

更新日期：2005-06-01 00:00:00

abstract：INTRODUCTION/PURPOSE:Regular aerobic exercise reduces aortic stiffness. However, the mechanisms by which chronic exercise lowers arterial stiffness are not known. To determine the molecular mechanisms of these changes, the alteration of gene expression in the aorta by aerobic exercise training was measured with the mic...

journal_title：Medicine and science in sports and exercise

authors： Maeda S,Iemitsu M,Miyauchi T,Kuno S,Matsuda M,Tanaka H

更新日期：2005-10-01 00:00:00