Accuracy and reliability of 10 pedometers for measuring steps over a 400-m walk.

abstract：:It has been widely claimed that exercise is beneficial to dysmenorrhea, yet solid evidence is lacking. Studies investigating this relationship have been reviewed for this paper. Most showed decreased prevalence and/or improved symptomatology with exercise. However, controlled longitudinal studies involving women with ...

journal_title：Medicine and science in sports and exercise

authors： Golomb LM,Solidum AA,Warren MP

更新日期：1998-06-01 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: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：:The purpose of this study was to determine the effects of different volumes of high-intensity resistance training on isometric torque and muscle thickness. Training was conducted three times per week using one set (low volume, EX-1, N = 18) or three sets (high volume, EX-3, N = 20) of dynamic variable resistance exerc...

journal_title：Medicine and science in sports and exercise

authors： Starkey DB,Pollock ML,Ishida Y,Welsch MA,Brechue WF,Graves JE,Feigenbaum MS

更新日期：1996-10-01 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：:Since many physiological, metabolic, and endocrine changes that occur during pregnancy are evident even at rest, the alterations found during exercise may not necessarily be the same as those found in the normal population. Nonetheless, the exercise-induced cardiopulmonary changes are essentially normal or slightly ex...

journal_title：Medicine and science in sports and exercise

authors： Gorski J

更新日期：1985-08-01 00:00:00

abstract：:In "normal" conditions (e.g., normoxia, absence of pathological conditions) convective and diffusive O(2) delivery to skeletal muscle fibers do not seem to represent important determinants for the kinetics of adjustment of oxidative phosphorylation following increases in metabolic demand. Whereas a limiting role by PD...

journal_title：Medicine and science in sports and exercise

authors： Grassi B

更新日期：2005-09-01 00:00:00

abstract：PURPOSE:The cold pain sensitivity in fighter pilots was studied by using a cold pressor test. METHODS:The pilots were divided into two groups: one group consisting of eight pilots (N = 8) who had experienced several acute in-flight neck pain attacks, and the control group (N = 8) who had not experienced these pain con...

journal_title：Medicine and science in sports and exercise

authors： Kemppainen P,Hämäläinen O,Könönen M

更新日期：1998-04-01 00:00:00

abstract：:The influence of body weight on the performance in cross-country skiing has been studied by: dimensional analysis of the ratio (R) between the factors of importance to power production (VO2max, acceleration of gravity) and the braking powers, e.g., friction and air resistance; measuring the energy cost of level skiing...

journal_title：Medicine and science in sports and exercise

authors： Bergh U

更新日期：1987-08-01 00:00:00

abstract：PURPOSE:As adjuvant therapy for enhancing the effects of stimulants and thereby minimizing medication doses, we hypothesized that aerobic exercise might be an effective adjunctive therapy for enhancing the effects of methylphenidate on the clinical symptoms, cognitive function, and brain activity of adolescents with at...

journal_title：Medicine and science in sports and exercise

authors： Choi JW,Han DH,Kang KD,Jung HY,Renshaw PF

更新日期：2015-01-01 00:00:00

abstract：:The performance of the Caltrac accelerometer was studied in elementary school-age children under field and laboratory conditions. In Study 1, 35 children (20 boys, 15 girls, mean age = 10.8 yr) wore the accelerometer and a heart rate (HR) monitor for 2 d. Caltrac activity counts per hour were compared to the mean "act...

journal_title：Medicine and science in sports and exercise

authors： Sallis JF,Buono MJ,Roby JJ,Carlson D,Nelson JA

更新日期：1990-10-01 00:00:00

abstract：:In 1983 a representative sample of Danish adolescents 16-19 yr of age were selected to participate in a study to determine risk profile for coronary heart disease. Eight years later (1991), we performed a follow-up study of the same participants 23-27 yr of age to compare risk factors. In the young adults power was ge...

journal_title：Medicine and science in sports and exercise

authors： Andersen LB,Haraldsdóttir J

更新日期：1994-08-01 00:00:00

abstract：PURPOSE:To compare the physiological and performance adaptations between periodized and nonperiodized resistance training in women collegiate tennis athletes. METHODS:Thirty women (19 +/- 1 yr) were assigned to either a periodized resistance training group (P), nonperiodized training group (NV), or a control group (C)...

journal_title：Medicine and science in sports and exercise

authors： Kraemer WJ,Hakkinen K,Triplett-Mcbride NT,Fry AC,Koziris LP,Ratamess NA,Bauer JE,Volek JS,McConnell T,Newton RU,Gordon SE,Cummings D,Hauth J,Pullo F,Lynch JM,Fleck SJ,Mazzetti SA,Knuttgen HG

更新日期：2003-01-01 00:00:00

abstract：UNLABELLED:Migrating birds have been able to sustain an energy expenditure (EE) that is five times their basal metabolic rate. Although humans can readily reach these levels, it is not yet clear what levels can be sustained for several days. PURPOSE:The study's purposes were 1) to determine the upper limits of human E...

journal_title：Medicine and science in sports and exercise

authors： Cooper JA,Nguyen DD,Ruby BC,Schoeller DA

更新日期：2011-12-01 00:00:00

abstract：INTRODUCTION:Physical endurance can be limited by muscle glycogen stores, in that glycogen depletion markedly reduces external work. During carbohydrate restriction, the liver synthesizes the ketone bodies, D-β-hydroxybutyrate, and acetoacetate from fatty acids. In animals and in the presence of glucose, D-β-hydroxybut...

journal_title：Medicine and science in sports and exercise

authors： Holdsworth DA,Cox PJ,Kirk T,Stradling H,Impey SG,Clarke K

更新日期：2017-09-01 00:00:00

abstract：PURPOSE:Despite endorsement by various health organizations, there is a lack of research on the effectiveness of perceptually regulated exercise training (PRET) as a method of exercise intensity prescription. The purpose of this study was to confirm the efficacy of an 8-wk PRET program clamped at RPE13 to improve aerob...

journal_title：Medicine and science in sports and exercise

authors： Parfitt G,Evans H,Eston R

更新日期：2012-08-01 00:00:00

abstract：PURPOSE:Female athletes often demonstrate changes in cardiac dimensions that are less prominent than in male athletes, and results from longitudinal studies are conflicting. The atrioventricular plane displacement (AVPD) in the heart is used as an index of left ventricular systolic function with the assumption that it ...

journal_title：Medicine and science in sports and exercise

authors： Slørdahl SA,Madslien VO,Støylen A,Kjos A,Helgerud J,Wisløff U

更新日期：2004-11-01 00:00:00

abstract：PURPOSE:Recent literature suggests that subconcussive impacts may influence cognitive functioning across the life span. These effects are suggested to manifest as functional and possibly structural changes. Head impact biomechanics during American football have been characterized from the high school to professional le...

journal_title：Medicine and science in sports and exercise

authors： Martini D,Eckner J,Kutcher J,Broglio SP

更新日期：2013-04-01 00:00:00

abstract：PURPOSE:This study examines heavy episodic alcohol consumption and associated harms in collegiate athletes in the United States. The factors which may promote or deter such use are explored. METHODS:Randomly selected students in a nationally representative sample of 4-yr colleges in the United States completed self-re...

journal_title：Medicine and science in sports and exercise

authors： Nelson TF,Wechsler H

更新日期：2001-01-01 00:00:00

abstract：:Canine skeletal muscle preparations in situ contain varying mixtures of fast and slow fatigue resistant fibers. All vessels on the arterial side of the vascular bed in these preparations from the conduit arteries to the arterioles contribute to the vascular resistance. The vascular beds autoregulate at rest and during...

journal_title：Medicine and science in sports and exercise

authors： Barclay JK

更新日期：1988-10-01 00:00:00

abstract：:Pyruvate and dihydroxyacetone are three carbon compounds that when infused directly into the blood or taken orally produce strong metabolic effects. When chronically fed to animals as part of their diet, pyruvate plus dihydroxyacetone reduce the rate of weight gain and body fat content during growth. These alterations...

journal_title：Medicine and science in sports and exercise

authors： Ivy JL

更新日期：1998-06-01 00:00:00

abstract：PURPOSE:This study investigated the combined effects of exercise and smoking cessation on serum lipids. METHODS:Eighteen female smokers quit smoking using standard behavioral methods combined with exercise (N = 9) or with a nonexercise contact time control (N = 9). The smoking cessation program for both groups consist...

journal_title：Medicine and science in sports and exercise

authors： Niaura R,Marcus B,Albrecht A,Thompson P,Abrams D

更新日期：1998-09-01 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：:A group of 103 female weight lifters (WL) and 92 control (C) women answered a survey concerning eating behavior and attitudes (including the Eating Disorder Inventory) and menstrual function. The incidence of menstrual dysfunction, defined as oligomenorrhea plus amenorrhea, was significantly higher for the WL (30%) th...

journal_title：Medicine and science in sports and exercise

authors： Walberg JL,Johnston CS

更新日期：1991-01-01 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:The fluctuations in force during a steady contraction can be influenced by age, vision, and level of physiological arousal. The aim of this study was to determine the effects of a stressor on the force fluctuations and information transmission exhibited by young, middle-aged, and older adults when a pinch-grip ...

journal_title：Medicine and science in sports and exercise

authors： Christou EA

更新日期：2005-12-01 00:00:00

abstract：PURPOSE:Physical exercise or hypoxic exposure influences hemorheology and acid-base homeostasis. Band 3 protein in erythrocytes modulates cells' rheological properties and anion transport ability. This study investigated how cycling aerobic interval training (AIT) and moderate continuous training (MCT) affect the rheol...

journal_title：Medicine and science in sports and exercise

authors： Chou SL,Huang YC,Fu TC,Hsu CC,Wang JS

更新日期：2016-01-01 00:00:00

abstract：:Acute bouts of aerobic exercise have been consistently associated with significant reductions in anxiety, but explanations for this effect remain elusive. The cerebral lateralization hypothesis predicts that anxiety reductions would be caused by a postexercise decrease in anterior right, relative to left, hemisphere a...

journal_title：Medicine and science in sports and exercise

authors： Petruzzello SJ,Landers DM

更新日期：1994-08-01 00:00:00

abstract：:Estimates of muscular efficiency in competitive and recreational cyclists at similar work intensities and cycling frequencies were examined. Twelve healthy college-age male nonsmoker volunteers were grouped as either competitive (CC; N = 6) or recreational (RC; N = 6) cyclists based upon previous cycling experience. S...

journal_title：Medicine and science in sports and exercise

authors： Nickleberry BL Jr,Brooks GA

更新日期：1996-11-01 00:00:00

abstract：PURPOSE:To compare the cardiovascular reactivity response to mental challenge of aerobically trained and untrained preadolescent boys. METHODS:Heart rate (HR) and blood pressure, as well as stroke volume, total peripheral resistance, rate pressure product, and cardiac contractility response in 15 aerobically trained (...

journal_title：Medicine and science in sports and exercise

authors： Franks PW,Boutcher SH

更新日期：2003-08-01 00:00:00