Prevalence of and traits associated with low BMD among female adolescent runners.

abstract：PURPOSES:To validate the energy expenditure estimated from The Minnesota Leisure Time Physical Activity Questionnaire (MLTPAQ) with total energy expenditure (TEE) measured by doubly labeled water (DLW), and to present and examine the validity of an extended version of the MLTPAQ with additional questions about inactivi...

journal_title：Medicine and science in sports and exercise

authors： Slinde F,Arvidsson D,Sjöberg A,Rossander-Hulthén L

更新日期：2003-11-01 00:00:00

abstract：OBJECTIVE:To evaluate the effect of chronic moderate-intensity exercise upon the alterations of immune system cell function induced by energy restriction. METHODS:Forty male Wistar rats were randomly assigned to the following groups: sedentary animals fed ad libitum (SF, N = 10) or submitted to energy restriction (SER...

journal_title：Medicine and science in sports and exercise

authors： Dos Santos Cunha WD,Giampietro MV,De Souza DF,Vaisberg M,Seelaender MC,Rosa LF

更新日期：2004-12-01 00:00:00

abstract：:Although hyponatremia (HN) has been reported among endurance athletes, its etiology often remains uncertain and of great interest to clinicians and physiologists. This case report presents physiologic evidence regarding the etiology and development of HN during exercise in the heat. A 21-yr-old male volunteer (K.G.) u...

journal_title：Medicine and science in sports and exercise

authors： Armstrong LE,Curtis WC,Hubbard RW,Francesconi RP,Moore R,Askew EW

更新日期：1993-05-01 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:To provide evidence that lower-extremity muscle activity during running is tuned in response to the loading rate of the impact forces at heel-strike. METHODS:Six runners ran two 30-min trials per week for 4 wk. The trials tested two shoes which differed only in the material hardness of the midsole. The shoes w...

journal_title：Medicine and science in sports and exercise

authors： Wakeling JM,Pascual SA,Nigg BM

更新日期：2002-09-01 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:To determine whether physical activity and fitness change in girls with and without a predisposition to obesity from 8 to 10 yr of age. METHODS:Normal-weight girls (N = 91) were recruited at 8 yr of age according to parental body mass index (BMI): LN = girls with two lean (BMI < 25 kg.m-2) parents, LNOB = girl...

journal_title：Medicine and science in sports and exercise

authors： Treuth MS,Butte NF,Adolph AL,Puyau MR

更新日期：2004-02-01 00:00:00

abstract：:Maximal lactate steady state (MLSS) refers to the upper limit of blood lactate concentration indicating an equilibrium between lactate production and lactate elimination during constant workload. The aim of the present study was to investigate whether different levels of MLSS may explain different blood lactate concen...

journal_title：Medicine and science in sports and exercise

authors： Beneke R,von Duvillard SP

更新日期：1996-02-01 00:00:00

abstract：PURPOSE:This study evaluated the factorial validity of a self-report measure of concussion-related symptom severity among a large sample of male, high-school athletes. METHODS:Participants (N = 1089) were nonconcussed, male, high-school football players. All participants completed a single baseline self-report measure...

journal_title：Medicine and science in sports and exercise

authors： Piland SG,Motl RW,Guskiewicz KM,McCrea M,Ferrara MS

更新日期：2006-01-01 00:00:00

abstract：:This study investigates the utility of two equations for predicting minimum wrestling weight and three equations for predicting body density for the population of high school wrestlers. A sample of 54 wrestlers was assessed for body density by underwater weighing, residual volume by helium dilution, and selected anthr...

journal_title：Medicine and science in sports and exercise

authors： Williford HN,Smith JF,Mansfield ER,Conerly MD,Bishop PA

更新日期：1986-04-01 00:00:00

abstract：:The papers in this supplement to Medicine and Science in Sports and Exercise seek to summarize our knowledge of the dose-response relationship of exercise with a variety of health outcomes. This type of rigorous evidence summation has become quite popular in the past 10 years as health care providers and policymakers ...

journal_title：Medicine and science in sports and exercise

authors： Schriger DL

更新日期：2001-06-01 00:00:00

abstract：:Sprint-trained athletes demonstrate a remarkable ability to perform exercise which results in fatigue quickly. However, the mechanisms for these enhanced performance capabilities have not been fully elucidated. Elevation in glycolytic enzymes and increased fast-twitch fiber compositions which would result in an enhanc...

journal_title：Medicine and science in sports and exercise

authors： Parkhouse WS,McKenzie DC

更新日期：1984-08-01 00:00:00

abstract：:Ten eumenorrheic nonathletic women, aged 21-25, were studied on the 8th day following the LH peak in three consecutive cycles. Plasma level and metabolic clearance rate (MCR) of estradiol (E2) and progesterone (P) were measured before and during a 2-h continuous treadmill test at a speed corresponding to 70% of their ...

journal_title：Medicine and science in sports and exercise

authors： Montagnani CF,Arena B,Maffulli N

更新日期：1992-07-01 00:00:00

abstract：PURPOSE:To determine the reliability and validity of the School Health Action, Planning and Evaluation System (SHAPES) physical activity questionnaire, a machine-readable questionnaire designed to collect data from all students in a school from grades 6 to 12 and to provide feedback to the school for planning and evalu...

journal_title：Medicine and science in sports and exercise

authors： Wong SL,Leatherdale ST,Manske SR

更新日期：2006-09-01 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:To compare the historical evolution of performance for males and females in anaerobically dominated sprint events in three different sports: running, swimming, and speed skating. METHODS:Times of the top six finishers in a total of 283 men's and women's Olympic and world championship finals held between 1952 a...

journal_title：Medicine and science in sports and exercise

authors： Seiler S,De Koning JJ,Foster C

更新日期：2007-03-01 00:00:00

abstract：:Knee injuries continue to present a complex set of clinical problems. The answers to these problems have recently been redefined by the application of sophisticated biomechanical research methods to the study of knee ligaments and joint function. This manuscript reviews contributions which our laboratory has made to t...

journal_title：Medicine and science in sports and exercise

authors： Noyes FR,Keller CS,Grood ES,Butler DL

更新日期：1984-10-01 00:00:00

abstract：PURPOSE:The purpose of this study was to determine whether increased intraluminal pressure is the damaging factor that reduces flow-mediated dilation (FMD) in young, healthy subjects after resistance exercise to maximal exertion. HYPOTHESIS:Attenuating the rise in brachial artery pressure during weight lifting by plac...

journal_title：Medicine and science in sports and exercise

authors： Buchanan CE,Kadlec AO,Hoch AZ,Gutterman DD,Durand MJ

更新日期：2017-04-01 00:00:00

abstract：UNLABELLED:Magnesium (Mg) is important for regulating ion transport and cellular metabolism in all body tissues. In skeletal muscle Mg is involved in the neuromuscular activity, excitation, and muscle contraction. Mg deficiency can cause muscle weakness and muscle cramps. Less than 1% of total body Mg is found in serum...

journal_title：Medicine and science in sports and exercise

authors： Weller E,Bachert P,Meinck HM,Friedmann B,Bärtsch P,Mairbäurl H

更新日期：1998-11-01 00:00:00

abstract：PURPOSE:Cross-sectional studies suggest that training can increase muscle carnosine (MCarn), although longitudinal studies have failed to confirm this. A lack of control for dietary β-alanine intake or muscle fiber type shifting may have hampered their conclusions. The purpose of the present study was to investigate th...

journal_title：Medicine and science in sports and exercise

authors： DE Salles Painelli V,Nemezio KM,Pinto AJ,Franchi M,Andrade I,Riani LA,Saunders B,Sale C,Harris RC,Gualano B,Artioli GG

更新日期：2018-11-01 00:00:00

abstract：PURPOSE:Cardiac aldosterone might be involved in the deleterious effects of nandrolone decanoate (ND) on the heart. Therefore, we investigated the involvement of cardiac aldosterone, by the pharmacological block of AT1 or mineralocorticoid receptors, on cardiac hypertrophy and fibrosis. METHODS:Male Wistar rats were r...

journal_title：Medicine and science in sports and exercise

authors： Do Carmo EC,Fernandes T,Koike D,Da Silva ND Jr,Mattos KC,Rosa KT,Barretti D,Melo SF,Wichi RB,Irigoyen MC,de Oliveira EM

更新日期：2011-10-01 00:00:00

abstract：PURPOSE:This study was conducted to determine if fifth-grade students who walked or bicycled to school on a regular basis were more physically active than those that did not. METHODS:The sample consists of 219 fifth-grade students (10.3 +/- 0.6 yr, 44% male, 58% minority) from eight randomly selected urban and suburba...

journal_title：Medicine and science in sports and exercise

authors： Sirard JR,Riner WF Jr,McIver KL,Pate RR

更新日期：2005-12-01 00:00:00

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 evaluate energy balance and body composition in 42 gymnasts (mean age = 15.5 yr) and 20 runners (mean age = 26.6 yr), all of whom were on national teams or were nationally ranked. METHODS:Athletes were assessed for body composition using DEXA and skinfolds, and energy balance w...

journal_title：Medicine and science in sports and exercise

authors： Deutz RC,Benardot D,Martin DE,Cody MM

更新日期：2000-03-01 00:00:00

abstract：PURPOSE:The purpose of the present study was to examine the effect of muscle activity level on serum creatine kinase (CK) activity after high-force eccentric exercise of the elbow flexors. METHODS:Twenty-six male volunteers were randomly assigned to one of three groups for a 4-d treatment period after exercise: immobi...

journal_title：Medicine and science in sports and exercise

authors： Sayers SP,Clarkson PM,Lee J

更新日期：2000-09-01 00:00:00

abstract：:The purpose was to study the effects of skipping rate on energy expenditure and sex differences in response to rope skipping. Responses of 19 males and 11 females were measured while skipping for 5 min at 125, 135 and 145 skips . min-1. Expired air was routed through a hollow handle to collection bags to provide unint...

journal_title：Medicine and science in sports and exercise

authors： Town GP,Sol N,Sinning WE

更新日期：1980-01-01 00:00:00

abstract：PURPOSE:Exercise training restores innate immune system cell function in post-myocardial infarction (post-MI) rats. However, studies of the involvement of lymphocyte (Ly) in the setting of the congestive heart failure (CHF) are few. To address this issue, we investigated the function of Ly obtained from cervical lymph ...

journal_title：Medicine and science in sports and exercise

authors： Batista ML Jr,Santos RV,Lopes RD,Lopes AC,Costa Rosa LF,Seelaender MC

更新日期：2008-03-01 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：:We sought to determine how a stationary activity such as playing a stringed instrument may affect energy expenditure (EE) in adolescents. Using automated indirect calorimetry, we measured EE in eight adolescents (1 male, 7 females, 14.2 +/- 2.1 yr) while they each performed the following activities: watching televisio...

journal_title：Medicine and science in sports and exercise

authors： Horswill CA,Kien CL,Zipf WB

更新日期：1995-09-01 00:00:00

abstract：:Vigorous exercise is associated with a sensation of well-being, and this subjective state has been objectively quantified with psychometric, cardiovascular, and neurophysiological data. Reductions in state anxiety have been demonstrated to follow acute physical activity, and this response persists for 2-5 h. Chronic p...

journal_title：Medicine and science in sports and exercise

authors： Morgan WP

更新日期：1985-02-01 00:00:00