Physiological profile of middle-aged male and female tennis players.

abstract：PURPOSE:The purpose of this study was to examine the ability of the SenseWear Pro2 Armband (SWA) to accurately assess energy expenditure in free-living overweight or obese children during a 2-wk period by comparison with energy expenditure measured using the doubly labeled water (DLW) method. A second aim was to examin...

journal_title：Medicine and science in sports and exercise

authors： Catharina Bäcklund,Gunnevi Sundelin,Christel Larsson

更新日期：2010-06-01 00:00:00

abstract：INTRODUCTION:Caffeine is an exercise performance enhancer widely used by individuals engaged in training or competition under heat-stressed conditions. Caffeine ingestion during exercise in the heat is believed to be safe, since it does not greatly affect body temperature responses, heart rate or body fluid status. How...

journal_title：Medicine and science in sports and exercise

authors： Fujii N,Fujimoto T,Cao Y,Dobashi K,Matsutake R,Amano T,Wanatabe K,Nishiyasu T

更新日期：2020-10-07 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：PURPOSE:Isokinetic strength is normally measured for a single range of motion and body position. This study quantified the variability, between individuals, in the relationships between a single peak knee extension moment and the isokinetic extension moments measured for different hip angles and ranges of knee motion. ...

journal_title：Medicine and science in sports and exercise

authors： Pavol MJ,Grabiner MD

更新日期：2000-05-01 00:00:00

abstract：:Nine subjects participated in an exercise program for 40 min/day, 6 days/wk. The training work rates were kept constant for the first 4 wk. The work rates were then increased to a higher level and kept constant for an additional 5 wk. During both training periods, maximum oxygen uptake (VO2max) increased for the first...

journal_title：Medicine and science in sports and exercise

authors： Hickson RC,Hagberg JM,Ehsani AA,Holloszy JO

更新日期：1981-01-01 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：PURPOSE:Exercise appears to offer protection against weight gain, perhaps related to its effects on fat metabolism. Previous work in rats has shown that interventions resulting in a negative energy balance lead to alterations in the trafficking of dietary fat. This study was undertaken to determine whether exercise aft...

journal_title：Medicine and science in sports and exercise

authors： Votruba SB,Atkinson RL,Hirvonen MD,Schoeller DA

更新日期：2002-11-01 00:00:00

abstract：PURPOSE:The purpose of the current study was to investigate the associations between the GNB3 C825T polymorphism, body fatness and fitness, and blood pressure in a sample of young Korean men. METHODS:A total of 282 apparently healthy Korean men (nonobese N = 152, obese N = 130) aged 19-33 yr participated in the study....

journal_title：Medicine and science in sports and exercise

authors： Lee J,Lee S,Shin S,Kang HS

更新日期：2005-07-01 00:00:00

abstract：INTRODUCTION/PURPOSE:To examine whether fluctuations in training load during an Olympic year lead to changes in bone mineral densities and factors that regulate bone (sclerostin, osteoprotegerin and receptor activator of nuclear factor kappa-B ligand), energy metabolism (insulin-like growth factor-1 and leptin), and in...

journal_title：Medicine and science in sports and exercise

authors： Kurgan N,Logan-Sprenger H,Falk B,Klentrou P

更新日期：2018-09-01 00:00:00

abstract：:The kinetics of gas exchange at the on-transient of exercise are appreciably slowed in older individuals. Eight older men (72 yr) completed 6 months of aerobic cycle training. Ventilation and gas exchange kinetics were determined at the onset of a below threshold (ventilatory threshold, V(E)T) square wave exercise fun...

journal_title：Medicine and science in sports and exercise

authors： Babcock MA,Paterson DH,Cunningham DA

更新日期：1994-04-01 00:00:00

abstract：INTRODUCTION:Arterialization of venous gas emboli (VGE) formed after surfacing from SCUBA diving can become arterial gas emboli (AGE) through intrapulmonary arterial-venous anastomoses that open with exercise. METHODS:We recruited twenty patent foramen ovale-negative SCUBA divers and conducted a field and a laboratory...

journal_title：Medicine and science in sports and exercise

authors： Barak OF,Madden D,Lovering AT,Lambrechts K,Ljubkovic M,Dujic Z

更新日期：2015-09-01 00:00:00

abstract：UNLABELLED:Closed rupture of the flexor tendon sheath has been known to occur in the elite rock climbing population. However, only one study has investigated the prevalence of this entity. PURPOSE:To examine an elite climbing group in this country for the prevalence of pulley rupture and report on other commonly occur...

journal_title：Medicine and science in sports and exercise

authors： Rohrbough JT,Mudge MK,Schilling RC

更新日期：2000-08-01 00:00:00

abstract：:The purposes of this study were to evaluate (a) the effects of step rate and upper body support on the VO2 and HR responses to fixed work rates on the StairMaster 4000 (SM), (b) the accuracy of the SM settings, and (c) how HR compared with that measured during grade-walking on a treadmill. Six subjects worked at a slo...

journal_title：Medicine and science in sports and exercise

authors： Howley ET,Colacino DL,Swensen TC

更新日期：1992-09-01 00:00:00

abstract：PURPOSE:There is interest in the potential long-term use of dietary supplementation with bovine colostrum to enhance exercise performance. The purpose of the present study was to determine the dose effects of bovine colostrum on cycling performance. METHODS:Forty-two competitive cyclists were randomly divided into thr...

journal_title：Medicine and science in sports and exercise

authors： Coombes JS,Conacher M,Austen SK,Marshall PA

更新日期：2002-07-01 00:00:00

abstract：:Children and adolescents possess higher weight-related maximum oxygen consumption (VO2max) levels than older individuals. The capacity of prepubescent children to improve aerobic fitness with endurance training is controversial, and reported data have provided conflicting evidence. In the adult, physical activity of c...

journal_title：Medicine and science in sports and exercise

authors： Rowland TW

更新日期：1985-10-01 00:00:00

abstract：:The purpose of this investigation was to determine the influence of post-exercise carbohydrate (CHO) intake on the rate of muscle glycogen resynthesis after high intensity weight resistance exercise in subjects not currently weight training. In a cross-over design, eight male subjects performed sets (mean = 8.8) of si...

journal_title：Medicine and science in sports and exercise

authors： Pascoe DD,Costill DL,Fink WJ,Robergs RA,Zachwieja JJ

更新日期：1993-03-01 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: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：:This study compared the effects of exercise or TXB2 and beta-TG when evaluated by four methods: 1) not adjusted; 2) adjusted for plasma volume changes (PV); 3) standardized per 10(5) platelets (PC); 4) or both PC and PV (PC-PV). Blood was collected from 16 men (41.3 +/- 8.1 yr) at rest after 30 min of exercise (IPE) a...

journal_title：Medicine and science in sports and exercise

authors： Todd MK,Goldfarb AH,Burleson C

更新日期：1997-05-01 00:00:00

abstract：:Studies using wearable sensors to measure posture, physical activity (PA), and sedentary behavior typically use a single sensor worn on the ankle, thigh, wrist, or hip. Although the use of single sensors may be convenient, using multiple sensors is becoming more practical as sensors miniaturize. PURPOSE:We evaluated ...

journal_title：Medicine and science in sports and exercise

authors： Tang QU,John D,Thapa-Chhetry B,Arguello DJ,Intille S

更新日期：2020-08-01 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：INTRODUCTION:The isometric muscle force attained after active stretch is greater than that attained in a purely isometric contraction. This property is referred to as residual force enhancement (RFE). Because RFE is thought to be caused by a titin-based passive force, it should be preserved in reduced contractile force...

journal_title：Medicine and science in sports and exercise

authors： Fukutani A,Herzog W

更新日期：2018-06-01 00:00:00

abstract：PURPOSE:Prolonged sitting time (ST) is associated with higher mortality. However, previous studies used only a single measure of ST at baseline, so they could not directly assess the effect of continued exposure to high ST, or of changes in ST, on mortality. We prospectively assessed the association of continued sedent...

journal_title：Medicine and science in sports and exercise

authors： León-Muñoz LM,Martínez-Gómez D,Balboa-Castillo T,López-García E,Guallar-Castillón P,Rodríguez-Artalejo F

更新日期：2013-08-01 00:00:00

abstract：:Myocardial crypts are extensions of blood signal penetrating the compact myocardium and are considered in literature as either a distinctive cardiac magnetic resonance (CMR) imaging marker for hypertrophic cardiomyopathy or as benign congenital malformations. What if CMR reveals a myocardial crypt in the presence of a...

journal_title：Medicine and science in sports and exercise

authors： Neunhäuserer D,Ermolao A,Corbetti F,Niebauer J,Zaccaria M,Gasperetti A

更新日期：2015-02-01 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:This study established the published prediction equations for the energy expenditure of walking and running compared with the measured values. To make this comparison we first determined whether differences exist in energy expenditure for 1600 m of walking versus running, and whether energy expenditure differen...

journal_title：Medicine and science in sports and exercise

authors： Hall C,Figueroa A,Fernhall B,Kanaley JA

更新日期：2004-12-01 00:00:00

abstract：PURPOSE:Reducing ice friction was one of the motives for developing the klapskate. However, the magnitude of power dissipation that occurs with conventional skates when a skater plantar flexes his ankle and the tip of the blade is pressed into the ice has not been quantified previously. In this study, we examine how ic...

journal_title：Medicine and science in sports and exercise

authors： Houdijk H,Wijker AJ,De Koning JJ,Bobbert MF,De Groot G

更新日期：2001-03-01 00:00:00

abstract：:This symposium is concerned with the use of resistive exercise in cardiac and coronary prone populations. In the past, these populations have been refrained from resistive exercise. However, recent studies suggest that this form of exercise is safe and has favorable effects on physical fitness, cardiac risk factors su...

journal_title：Medicine and science in sports and exercise

authors： Stewart KJ

更新日期：1989-12-01 00:00:00

abstract：:Anaerobic ATP production in skeletal muscle and the accumulated oxygen deficit (O2D) incurred during an exhaustive cycle bout (duration = 173 +/- 24 s; intensity = 112 +/- 3% VO2peak), were determined in 10 male cyclists (mean +/- SD: VO2peak = 69.8 +/- 4.2 ml.kg-1.min-1). Anaerobic ATP production (mmol.kg-1 d.w.) was...

journal_title：Medicine and science in sports and exercise

authors： Green S,Dawson BT,Goodman C,Carey MF

更新日期：1996-03-01 00:00:00

abstract：PURPOSE:Maternal obesity is known to predispose the offspring to impaired glucose metabolism and obesity associated with low-grade inflammation and hypothalamic dysfunction. Because preventive approaches in this context are missing to date, we aimed to identify molecular mechanisms in the offspring that are affected by...

journal_title：Medicine and science in sports and exercise

authors： Bae-Gartz I,Janoschek R,Kloppe CS,Vohlen C,Roels F,Oberthür A,Alejandre Alcazar MA,Lippach G,Muether PS,Dinger K,Ferrari N,Graf C,Dötsch J,Hucklenbruch-Rother E

更新日期：2016-05-01 00:00:00