Simultaneous arterial pressure recordings improve the detection of endofibrosis.

abstract：PURPOSE:For treatment of various knee disorders, muscles are trained in open or closed kinetic chain tasks. Coordination between the heads of the quadriceps muscle is important for stability and optimal joint loading for both the tibiofemoral and the patellofemoral joint. The aim of this study was to examine whether th...

journal_title：Medicine and science in sports and exercise

authors： Stensdotter AK,Hodges PW,Mellor R,Sundelin G,Häger-Ross C

更新日期：2003-12-01 00:00:00

abstract：PURPOSE:To determine whether lactate profiling could detect changes in discrete aspects of endurance fitness in world-ranked swimmers during a season. METHODS:Eight male and four female Australian National Team swimmers aged 20--27 yr undertook a 7 x 200-m incremental swimming step test on four occasions over an 8-mon...

journal_title：Medicine and science in sports and exercise

authors： Pyne DB,Lee H,Swanwick KM

更新日期：2001-02-01 00:00:00

abstract：PURPOSE:This study compared the effect of an initial exercise consisting of either low-intensity eccentric or maximal isometric contractions (ISOs) on protective effect against maximal eccentric contraction (MaxECC)-induced muscle damage. METHODS:Untrained young men were placed into one of five groups (n = 13 per grou...

journal_title：Medicine and science in sports and exercise

authors： Chen TC,Chen HL,Pearce AJ,Nosaka K

更新日期：2012-11-01 00:00:00

abstract：INTRODUCTION:The application of an autologous plasma rich in growth factors is beneficial in restoring connective tissues, as shown by clinical evidence in oral surgery and more recently in arthroscopic anterior cruciate ligament reconstruction and two cases of ruptured Achilles tendon in professional athletes. This is...

journal_title：Medicine and science in sports and exercise

authors： Sánchez M,Azofra J,Anitua E,Andía I,Padilla S,Santisteban J,Mujika I

更新日期：2003-10-01 00:00:00

abstract：:This document provides an overview of selected medical issues that are important to team physicians who are responsible for the care and treatment of athletes. It is not intended as a standard of care and should not be interpreted as such. This document is only a guide and, as such, is of a general nature, consistent ...

journal_title：Medicine and science in sports and exercise

authors：

更新日期：2008-11-01 00:00:00

abstract：:A biomechanical model of the ankle joint was developed and was used to predict the forces at the ankle during the stance phase of running. Measurements from five cadavers were averaged to obtain insertion points and directions of pull of equivalent tendons with respect to the assumed center of the ankle joint. A minim...

journal_title：Medicine and science in sports and exercise

authors： Burdett RG

更新日期：1982-01-01 00:00:00

abstract：:Perceptual and physiological congruity was examined during recovery from high-intensity dynamic exercise. Nine males (24.8 +/- 0.6 yr; VO2max; 52.3 +/- 1.5 ml.kg-1.min-1) undertook in random order four maximal treadmill protocols. Treadmill speed was held constant (5.3 km.h-1) while grade was incremented by 2, 4, 6, o...

journal_title：Medicine and science in sports and exercise

authors： Robertson RJ,Nixon PA,Caspersen CJ,Metz KF,Abbott RA,Goss FL

更新日期：1992-03-01 00:00:00

abstract：PURPOSE:To optimize endurance cycling performance, it is important to maximize efficiency. Power-measuring cranks and force-sensing pedals can be used to determine the mechanical effectiveness of cycling. From both a coaching and basic science perspective, it is of interest if a mechanically effective pedaling techniqu...

journal_title：Medicine and science in sports and exercise

authors： Korff T,Romer LM,Mayhew I,Martin JC

更新日期：2007-06-01 00:00:00

abstract：PURPOSE:This study aimed to investigate atrophy in the deep abdominal muscles, spinal extensors, and the effect of high-load resistive exercise with and without whole-body vibration after 60 d of strict bed rest. METHODS:Twenty-four subjects underwent 60 d of head-down tilt bed rest and performed either resistive vibr...

journal_title：Medicine and science in sports and exercise

authors： Belavý DL,Gast U,Felsenberg D

更新日期：2017-02-01 00:00:00

abstract：PURPOSE:The prevalences of diabetes, hypertension, and high cholesterol all decrease with increased levels of physical activity and cardiorespiratory fitness. Whether these reductions extend beyond contemporary guideline activity levels and whether fitness affects medication use independent of activity, remains unclear...

journal_title：Medicine and science in sports and exercise

authors： Williams PT,Franklin B

更新日期：2007-11-01 00:00:00

abstract：UNLABELLED:The protective effects of cardiorespiratory fitness (CRF) on hypertension (HTN) are well known; however, the association between muscular strength and incidence of HTN has yet to be examined. PURPOSE:This study evaluated the strength-HTN association with and without accounting for CRF. METHODS:Participants...

journal_title：Medicine and science in sports and exercise

authors： Maslow AL,Sui X,Colabianchi N,Hussey J,Blair SN

更新日期：2010-02-01 00:00:00

abstract：PURPOSE:The aim of this study was to investigate and improve the accuracy of accelerometer-type pedometers used by the elderly with slow walking speeds, with or without gait disorders, who do or do not use a cane. METHODS:Eighteen subjects walked with a cane (5 males, 13 females; age, 80.9 +/- 7.7 yr; height, 148.1 +/...

journal_title：Medicine and science in sports and exercise

authors： Ichinoseki-Sekine N,Kuwae Y,Higashi Y,Fujimoto T,Sekine M,Tamura T

更新日期：2006-09-01 00:00:00

abstract：:Ski charging was measured using giant-slalom style skis as gliding capacitors. The voltage measured across the plates was proportional to the charge on the base. While resting on dry snow or suspended in the air, the voltage was slowly reduced by the data logger itself. On wet snow the decay was much faster. While sta...

journal_title：Medicine and science in sports and exercise

authors： Colbeck SC

更新日期：1995-01-01 00:00:00

abstract：PURPOSE:We examined bilateral bone mineral density (BMD) in the arms of female college gymnasts to assess the relative contribution of high-impact loading forces versus daily activities on bone plasticity. METHODS:Twenty-five female collegiate gymnasts and 25 controls were studied. BMD of the lumbar spine, proximal fe...

journal_title：Medicine and science in sports and exercise

authors： Proctor KL,Adams WC,Shaffrath JD,Van Loan MD

更新日期：2002-11-01 00:00:00

abstract：PURPOSE:To examine the effects of prolonged systemic administration of diclofenac sodium (Voltaren), a nonsteroidal anti-inflammatory drug, on objective indices of exercise-induced muscle damage in humans. METHODS:Fifty-four volunteers (mean age, 26.4 yr; range, 18-35) participated in this randomized double-blind, pla...

journal_title：Medicine and science in sports and exercise

authors： O'Grady M,Hackney AC,Schneider K,Bossen E,Steinberg K,Douglas JM Jr,Murray WJ,Watkins WD

更新日期：2000-07-01 00:00:00

abstract：INTRODUCTION:The development of chronic ankle instability (CAI) is the primary residual deficit after ankle joint sprain. It has been proposed that CAI is characterized by two entities, namely, mechanical instability and functional instability. Each of these entities in turn is composed of various insufficiencies. Rese...

journal_title：Medicine and science in sports and exercise

authors： Delahunt E,Coughlan GF,Caulfield B,Nightingale EJ,Lin CW,Hiller CE

更新日期：2010-11-01 00:00:00

abstract：OBJECTIVES:To examine if the associations between motor competence and physical activity and musculoskeletal fitness change over time, whether motor competence is associated with longitudinal trajectories of physical activity and fitness, and mediating pathways among these constructs across early childhood. METHODS:Fo...

journal_title：Medicine and science in sports and exercise

authors： King-Dowling S,Proudfoot NA,Cairney J,Timmons BW

更新日期：2020-11-01 00:00:00

abstract：PURPOSE:An augmented pulmonary artery wedge pressure (PAWP) response may explain exercise intolerance in some humans. However, routine use of exercise hemodynamic testing is limited by a lack of data from normal older men and women. Our objective was to evaluate the exercise PAWP response and the potential for sexual d...

journal_title：Medicine and science in sports and exercise

authors： Esfandiari S,Wright SP,Goodman JM,Sasson Z,Mak S

更新日期：2017-07-01 00:00:00

abstract：PURPOSE:The objective of this study is to determine the effects of a caffeine-containing energy drink on female volleyball players' performance. METHODS:Thirteen elite female volleyball players ingested 3 mg·kg of caffeine with an energy drink or the same drink without caffeine (placebo drink) in a double-blind and ra...

journal_title：Medicine and science in sports and exercise

authors： Pérez-López A,Salinero JJ,Abian-Vicen J,Valadés D,Lara B,Hernandez C,Areces F,González C,Del Coso J

更新日期：2015-04-01 00:00:00

abstract：:The AMP-activated protein kinase (AMPK) has been referred to as an "energy sensor" because it binds to and is regulated by both AMP and ATP. The binding of AMP to AMPK allows it to be phosphorylated by upstream kinases, resulting in its activation. In contrast, the binding of ATP prevents its activation. AMPK regulate...

journal_title：Medicine and science in sports and exercise

authors： Kimball SR

更新日期：2006-11-01 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 present study examined the validity of selected bioelectrical impedance (BIA) equations for estimating percent fat (% fat) in males and compared their validity with that of a commonly used skinfold equation (Sum3). One-hundred twenty-two Caucasian males (X +/- SD = 12.5 +/- 5.8% fat, as determined by underwater we...

journal_title：Medicine and science in sports and exercise

authors： Eckerson JM,Stout JR,Housh TJ,Johnson GO

更新日期：1996-04-01 00:00:00

abstract：:The downswing phase in golf was represented as a double pendulum pivoted at the shoulder joint and hinged at the wrist. The motion of such a pendulum was used to derive a series of equations which were used to describe the instantaneous values of several of the component features of the downswing. Results of this anal...

journal_title：Medicine and science in sports and exercise

authors： Milburn PD

更新日期：1982-01-01 00:00:00

abstract：PURPOSE:The present study examined the effect of extreme old age on the plasticity of the rat plantaris muscle in response to an increase in mechanical load. METHODS:Male Fischer 344 rats, aged 7 months (adult) and 25 months (old) underwent bilateral surgical ablation of the gastrocnemius muscle to functionally overlo...

journal_title：Medicine and science in sports and exercise

authors： Linderman JK,Blough ER

更新日期：2002-07-01 00:00:00

abstract：PURPOSE:To determine substrate utilization and energy expenditure during maximal and submaximal exercise and recovery in adolescents with cystic fibrosis (CF) and healthy age-matched controls (C). METHODS:Ten clinically stable CF patients (four girls, six boys; age = 10-22 yr) were matched by body mass index, age, gen...

journal_title：Medicine and science in sports and exercise

authors： Wideman L,Baker CF,Brown PK,Consitt LA,Ambrosius WT,Schechter MS

更新日期：2009-02-01 00:00:00

abstract：INTRODUCTION:The vascular endothelium plays an important role in the maintenance of vascular health and the modulation of vascular tone and blood pressure. Recently, it has been demonstrated that blood pressure reactivity to physical activity is greater in the morning, and possibly, diurnal variation in vascular functi...

journal_title：Medicine and science in sports and exercise

authors： Jones H,Green DJ,George KP,Black MA,Atkinson G

更新日期：2009-06-01 00:00:00

abstract：:Cyclic AMP increases in liver during exercise, the magnitude of the increase being dependent on duration and intensity of the exercise. Within limits, the increase in cAMP is closely correlated with the rate of glycogenolysis and with the exercise intensity. It is unlikely that epinephrine is involved in determining c...

journal_title：Medicine and science in sports and exercise

authors： Winder WW

更新日期：1988-12-01 00:00:00

abstract：:The purpose of this study was to determine whether competitive and recreational runners would replicate land training intensity during water immersion (WI) running with (V) and without (NV) a flotation vest and during treadmill running (Tm). Seven female competitive runners (CR) and seven female noncompetitive runners...

journal_title：Medicine and science in sports and exercise

authors： Gehring MM,Keller BA,Brehm BA

更新日期：1997-10-01 00:00:00

abstract：PURPOSE:This study aimed to catalog the relationships between step-based accelerometer metrics indicative of physical activity volume (steps per day, adjusted to a pedometer scale), intensity (mean steps per minute from the highest, not necessarily consecutive, minutes in a day; peak 30-min cadence), and sedentary beha...

journal_title：Medicine and science in sports and exercise

authors： Tudor-Locke C,Schuna JM Jr,Han HO,Aguiar EJ,Green MA,Busa MA,Larrivee S,Johnson WD

更新日期：2017-02-01 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