Effort tolerance in elderly women with different physical activity backgrounds.

abstract：BACKGROUND:For optimal health benefits, moderate- to vigorous-intensity physical activity (MVPA) is recommended in sustained bouts lasting ≥10 min. However, short spurts of MVPA lasting <10 min are more common in everyday life. It is unclear whether short spurts of MVPA further protect against the development of hypert...

journal_title：Medicine and science in sports and exercise

authors： White DK,Gabriel KP,Kim Y,Lewis CE,Sternfeld B

更新日期：2015-11-01 00:00:00

abstract：PURPOSE:To examine the relationship between variable lower-limb coordination and shoulder joint kinetics and kinematics in the high-performance flat first serve in tennis. METHODS:Three-dimensional data describing three flat serve (FS) techniques, each executed with varying lower-limb involvement: foot-up (FU), foot-b...

journal_title：Medicine and science in sports and exercise

authors： Reid M,Elliott B,Alderson J

更新日期：2008-02-01 00:00:00

abstract：INTRODUCTION:Slow gait predicts many adverse clinical outcomes in old adults, but the mechanisms of how power training can minimize the age-related loss of gait velocity is unclear. We examined the effects of 10 wk of lower extremity power training and detraining on healthy old adults' lower extremity muscle power and ...

journal_title：Medicine and science in sports and exercise

authors： Beijersbergen CM,Granacher U,Gäbler M,Devita P,Hortobágyi T

更新日期：2017-01-01 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：:Body composition has become a major field of interest for many exercise and sport scientists as well as clinicians who specialize in the prevention of and rehabilitation from hypokinetic diseases. This paper discusses the state of the art within selected areas of body composition, identifying significant areas of cont...

journal_title：Medicine and science in sports and exercise

authors： Wilmore JH

更新日期：1983-01-01 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:Endurance training improves skeletal muscular function including energy metabolism and structure. Sex steroid hormones partly contribute to the exercise-induced muscular adaptations. Recently, we demonstrated that skeletal muscle contains steroidogenic converting enzymes to synthesize sex steroid hormones and a...

journal_title：Medicine and science in sports and exercise

authors： Aizawa K,Iemitsu M,Maeda S,Mesaki N,Ushida T,Akimoto T

更新日期：2011-11-01 00:00:00

abstract：PURPOSE:Most studies of physical fitness change have been relatively small, not population-based, and lacking in women and nonwhites. The purpose of this analysis was to evaluate the 7-yr change in physical fitness in a biracial (black and white) population of young men and women. METHODS:We evaluated change in exerci...

journal_title：Medicine and science in sports and exercise

authors： Sidney S,Sternfeld B,Haskell WL,Quesenberry CP Jr,Crow RS,Thomas RJ

更新日期：1998-03-01 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:Compare three published methods of quantifying physical activity (total activity, peak strain, and bone-loading exposure (BLE) scores) and identify their associations with areal bone mineral density (aBMD), volumetric BMD (vBMD), and bone strength. METHODS:Postmenopausal women (N = 239; mean age: 53.8 yr) from...

journal_title：Medicine and science in sports and exercise

authors： Shedd KM,Hanson KB,Alekel DL,Schiferl DJ,Hanson LN,Van Loan MD

更新日期：2007-12-01 00:00:00

abstract：:Twenty subjects were randomly assigned to: 1) prophylactic ibuprofen (N = 5) [400 mg TID initiated 4 h before collection of baseline data and strenuous eccentric exercise bout], 2) therapeutic ibuprofen (N = 5) [400 mg TID initiated 24 h after baseline], 3) placebo (N = 5), or 4) control (N = 5). Muscle soreness perce...

journal_title：Medicine and science in sports and exercise

authors： Hasson SM,Daniels JC,Divine JG,Niebuhr BR,Richmond S,Stein PG,Williams JH

更新日期：1993-01-01 00:00:00

abstract：:Increased vertical impact loading during running has been associated with a variety of running related injuries including stress fractures, patellofemoral pain, and plantar fasciitis. PURPOSE:The purpose of this study was to examine the acute and long-term effect of a gait retraining program aimed at teaching runners...

journal_title：Medicine and science in sports and exercise

authors： Bowser BJ,Fellin R,Milner CE,Pohl MB,Davis IS

更新日期：2018-12-01 00:00:00

abstract：PURPOSE:The extent to which the diaphragm is targeted during a bout of inspiratory muscle training (IMT) is unknown. The purpose of this study was to characterize the relative activation patterns of the diaphragm and extradiaphragmatic inspiratory muscles during a bout of IMT and to determine whether diaphragmatic recr...

journal_title：Medicine and science in sports and exercise

authors： Ramsook AH,Koo R,Molgat-Seon Y,Dominelli PB,Syed N,Ryerson CJ,Sheel AW,Guenette JA

更新日期：2016-06-01 00:00:00

abstract：:Anthropometric and demographic characteristics are important determinants of exercise performance in healthy subjects, but their influence has not yet been studied in severe chronic heart failure, although peak oxygen uptake is frequently assessed in such patients for prognostic purposes. The aim of the present analys...

journal_title：Medicine and science in sports and exercise

authors： Pardaens K,Vanhaecke J,Fagard RH

更新日期：1997-06-01 00:00:00

abstract：PURPOSE:Aerobic exercise training in sedentary individuals improves physical fitness and various cardiovascular (CV) biomarkers. Nevertheless, there has been controversy as to whether exercise training may adversely affect some biomarkers in a small segment of the population. The purpose of this study was to investigat...

journal_title：Medicine and science in sports and exercise

authors： Leifer ES,Mikus CR,Karavirta L,Resnick BD,Kraus WE,Häkkinen K,Earnest CP,Fleg JL

更新日期：2016-01-01 00:00:00

abstract：PURPOSE:Time-resolved near-infrared spectroscopy was used to quantify tissue oxy- and deoxyhemoglobin concentrations ([HbO2] and [HbR]) and O2 saturation (stO2) in the oblique fibers of the vastus medialis muscle and brain prefrontal cortex during knee extension with and without blood flow restriction (BFR). METHODS:S...

journal_title：Medicine and science in sports and exercise

authors： Ganesan G,Cotter JA,Reuland W,Cerussi AE,Tromberg BJ,Galassetti P

更新日期：2015-01-01 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 AND METHODS:It is commonly recognized that there is familial aggregation for physical activity level. However, the genes and sequence variants responsible for the familial clustering have not been investigated. We performed a genome-wide linkage scan based on 432 markers typed in 767 subjects from 207 families ...

journal_title：Medicine and science in sports and exercise

authors： Simonen RL,Rankinen T,Perusse L,Rice T,Rao DC,Chagnon Y,Bouchard C,Quebec Family Study.

更新日期：2003-08-01 00:00:00

abstract：PURPOSE:Walking is likely to contribute substantially to nonexercise activity thermogenesis. The Tracmor triaxial accelerometer system (Maastricht, The Netherlands) is the most widely validated system for detecting body movement in free-living subjects. The aim of this study was to validate the Tracmor triaxial acceler...

journal_title：Medicine and science in sports and exercise

authors： Levine JA,Baukol PA,Westerterp KR

更新日期：2001-09-01 00:00:00

abstract：:This study investigates the relationship between exercise and dietary macronutrient selection. Female Sprague-Dawley rats (5 months old) were placed on a macronutrient self-selection diet for 15 wk. Three food cups, each containing a separate vitamin and mineral supplemented macronutrient, i.e., fat, carbohydrate, or ...

journal_title：Medicine and science in sports and exercise

authors： Miller GD,Dimond AG,Stern JS

更新日期：1994-12-01 00:00:00

abstract：PURPOSE:To evaluate the effects of intensity of exercise on insulin resistance and the expression of inflammatory proteins in the skeletal muscle of diet-induced obese (DIO) rats after a single bout of exercise. METHODS:In the first exercise protocol, the rats swam for two 3-h bouts, separated by a 45-min rest period ...

journal_title：Medicine and science in sports and exercise

authors： Da Silva AS,Pauli JR,Ropelle ER,Oliveira AG,Cintra DE,De Souza CT,Velloso LA,Carvalheira JB,Saad MJ

更新日期：2010-12-01 00:00:00

abstract：PURPOSE:Dual-energy x-ray absorptiometry (DXA) is becoming a popular tool to measure body composition in athletes, owing to its ease of operation and comprehensive analysis of body composition. This study represents the first systematic investigation of the reliability of DXA measurements of body composition in trained...

journal_title：Medicine and science in sports and exercise

authors： Nana A,Slater GJ,Hopkins WG,Burke LM

更新日期：2012-01-01 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：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：:The physiological mechanism of exercise-induced hyperfibrinolysis is not fully understood. It has been reported that exercise increases plasma arginine vasopressin (PAVP) and that PAVP infusion enhances blood fibrinolytic activity (FA). To characterize the fibrinolytic role of PAVP during exercise, PAVP and FA were ex...

journal_title：Medicine and science in sports and exercise

authors： el-Sayed MS

更新日期：1990-08-01 00:00:00

abstract：PURPOSE:The goal of this trial was to determine whether low-load blood flow-restricted (BFR) exercise of appendicular muscles induces a cross-transfer of effect to the trunk extensor (TE) muscles, such that low-load TE exercise would enhance TE size and function to a greater extent than standard low-load exercise in pe...

journal_title：Medicine and science in sports and exercise

authors： Ampomah K,Amano S,Wages NP,Volz L,Clift R,Ludin AFM,Nakazawa M,Law TD,Manini TM,Thomas JS,Russ DW,Clark BC

更新日期：2019-09-01 00:00:00

abstract：PURPOSE:The purpose of this study was to determine whether high frequency fatigue was present in the diaphragm after intense whole body endurance exercise. METHODS:We used bilateral phrenic nerve stimulation (BPNS) before and during recovery from whole body exercise to detect fatigue in the diaphragm. To detect high f...

journal_title：Medicine and science in sports and exercise

authors： Babcock MA,Pegelow DF,Taha BH,Dempsey JA

更新日期：1998-04-01 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: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:Habitual running has been associated with reduced risk of cataract development in one prospective study. The purposes of the current analyses were to provide further evidence of this potentially important benefit of vigorous exercise and to test whether moderate exercise (e.g., walking) provides as significant ...

journal_title：Medicine and science in sports and exercise

authors： Williams PT

更新日期：2013-06-01 00:00:00