Caffeinated energy drinks improve volleyball performance in elite female players.

abstract：BACKGROUND:Tendinopathies are painful overuse injuries observed in athletes participating in jumping sports. These injuries are heavily dependent on the resulting strain from the applied mechanical load. Therefore, mechanisms to reduce tendon strain may represent a primary prevention strategy to reduce the incidence of...

journal_title：Medicine and science in sports and exercise

authors： Firminger CR,Bruce OL,Wannop JW,Stefanyshyn DJ,Edwards WB

更新日期：2019-09-01 00:00:00

abstract：:Potential physiological, anthropometric, and training determinants of running economy (RE) were studied in a heterogeneous group of habitual distance runners (N = 188, 119 males, 69 females). RE was measured as VO2 (ml.kg-1.min-1) during level treadmill running at 161 m.min-1 (6 mph) (VO2-6). Examined as potential det...

journal_title：Medicine and science in sports and exercise

authors： Pate RR,Macera CA,Bailey SP,Bartoli WP,Powell KE

更新日期：1992-10-01 00:00:00

abstract：:The 1-mile run/walk test is the field test of choice for evaluating maximal aerobic power (VO2max) in school-aged children. The objective of this study was to determine the relative importance of selected metabolic determinants of mile run/walk performance in children 6-14 yr of age. Mile run/walk time (MRWT), VO2max,...

journal_title：Medicine and science in sports and exercise

authors： McCormack WP,Cureton KJ,Bullock TA,Weyand PG

更新日期：1991-05-01 00:00:00

abstract：PURPOSE:To determine the reliability of motor-evoked potentials (MEP) obtained using transcranial magnetic stimulation (TMS) in the first dorsal interosseous (FDI) and biceps brachii muscles. METHODS:Fourteen college subjects attended the laboratory on three separate days. TMS was used to obtain MEP with the subject r...

journal_title：Medicine and science in sports and exercise

authors： Kamen G

更新日期：2004-09-01 00:00:00

abstract：PURPOSE:The chronic exposure at high altitude (HA) represents an ideal model for evaluating the in vivo effects of hypobaric hypoxia. Taking advantage of the EV-K2-CNR Pyramid, this study was designed to evaluate whether acute and chronic hypoxia differently modulates the in vivo immune responses. METHODS:The study in...

journal_title：Medicine and science in sports and exercise

authors： Facco M,Zilli C,Siviero M,Ermolao A,Travain G,Baesso I,Bonamico S,Cabrelle A,Zaccaria M,Agostini C

更新日期：2005-05-01 00:00:00

abstract：UNLABELLED:Environmental heat stress degrades aerobic performance; however, little research has focused on performance when the selected task elicits modest elevations in core body temperature (<38.5 degrees C). PURPOSE:To determine the effect of environmental heat stress, with modest hyperthermia, on aerobic performa...

journal_title：Medicine and science in sports and exercise

authors： Ely BR,Cheuvront SN,Kenefick RW,Sawka MN

更新日期：2010-01-01 00:00:00

abstract：:The individual anaerobic threshold (IAT) is the highest metabolic rate at which blood lactate (LA) concentrations are maintained at a steady state during prolonged exercise. The purpose of this study was to compare the effects of active and passive recovery on the determination of the IAT before and after an endurance...

journal_title：Medicine and science in sports and exercise

authors： McLellan TM,Jacobs I

更新日期：1989-10-01 00:00:00

abstract：PURPOSE:A cyclical operational model is proposed to examine the interrelationship of a number of factors that are involved in sports injury epidemiology. In sports injury research, investigations often attempt to identify a unique risk factor that distinguishes an injured player. However, a wide variety of factors can ...

journal_title：Medicine and science in sports and exercise

authors： Gissane C,White J,Kerr K,Jennings D

更新日期：2001-12-01 00:00:00

abstract：:It has been suggested that television watching and physical activity are related to obesity. This association, however, has been investigated mainly in children. This study provided the opportunity to examine the relationship between television watching, physical activity, and body mass index in adult Pima Indians, a ...

journal_title：Medicine and science in sports and exercise

authors： Fitzgerald SJ,Kriska AM,Pereira MA,de Courten MP

更新日期：1997-07-01 00:00:00

abstract：PURPOSE:Investigate development of specific performance adaptions and hormonal responses every fourth week during a 12-wk high-intensity training (HIT) period in groups with different interval-training prescriptions. METHODS:Sixty-three well-trained cyclists performing a 12-wk intervention consisting of two to three H...

journal_title：Medicine and science in sports and exercise

authors： Sylta Ø,Tønnessen E,Sandbakk Ø,Hammarström D,Danielsen J,Skovereng K,Rønnestad BR,Seiler S

更新日期：2017-06-01 00:00:00

abstract：PURPOSE:Aerobic training (AT) and high-intensity intermittent training (HIIT) reduce arterial stiffness, whereas resistance training (RT) induces deterioration of or no change in arterial stiffness. However, the molecular mechanism of these effects of different exercise modes remains unclear. This study aimed to clarif...

journal_title：Medicine and science in sports and exercise

authors： Hasegawa N,Fujie S,Horii N,Miyamoto-Mikami E,Tsuji K,Uchida M,Hamaoka T,Tabata I,Iemitsu M

更新日期：2018-06-01 00:00:00

abstract：:The cell-to-cell lactate shuttle was introduced in 1984 and has been repeatedly supported by studies using a variety of experimental approaches. Because of its large mass and metabolic capacity, skeletal muscle is probably the major component of the lactate shuttle in terms of both production and consumption. Muscles ...

journal_title：Medicine and science in sports and exercise

authors： Gladden LB

更新日期：2008-03-01 00:00:00

abstract：PURPOSE:Evidence suggests that female adolescents and those living in urban environments may have lower physical activity (PA) levels compared with their peers. Yet few studies report PA for urban adolescent females, and there is no consensus regarding potential causes for low PA in this subgroup. We examined PA levels...

journal_title：Medicine and science in sports and exercise

authors： Rockette-Wagner B,Hipwell AE,Kriska AM,Storti KL,McTigue KM

更新日期：2017-04-01 00:00:00

abstract：PURPOSE:Since the introduction of carving skis, muscle activity has been investigated primarily on expert-level skiers with respect to EMG intensities. The three-part aim of this recreational skiing study was to analyze functional differences within the quadriceps muscle, to analyze the topographical influence, and to ...

journal_title：Medicine and science in sports and exercise

authors： Kröll J,Wakeling JM,Seifert JG,Müller E

更新日期：2010-08-01 00:00:00

abstract：OBJECTIVE:To examine the effect of an increase in roller ski rolling resistance on the physiological and upper body demands of roller skiing with the V2-alternate technique. METHODS:Nine highly skilled cross-country skiers roller skied at three paced speeds on a flat oval loop using roller skis with high (HiR) and low...

journal_title：Medicine and science in sports and exercise

authors： Millet GY,Hoffman MD,Candau RB,Buckwalter JB,Clifford PS

更新日期：1998-05-01 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:The present study investigated the effects of severe-intensity interval training at a frequency of once a week on cardiorespiratory function at rest and during exercise. METHODS:Fourteen young healthy males were randomly assigned to either an interval training group or control group. Cardiorespiratory function...

journal_title：Medicine and science in sports and exercise

authors： Nakahara H,Ueda SY,Miyamoto T

更新日期：2015-04-01 00:00:00

abstract：PURPOSE:Compare the influence of the chemoreflex on heart rate (HR) and blood pressure (BP) responses between children and adults. METHODS:Seventy children (35 boys and 35 girls) and 70 adults (35 men and 35 women) performed 30% maximal voluntary contraction static handgrip exercise (SHG) for 3 min, followed by 4 min ...

journal_title：Medicine and science in sports and exercise

authors： Turley KR

更新日期：2005-03-01 00:00:00

abstract：PURPOSE:In large epidemiologic studies, physical activity (PA) is often assessed using PA questionnaires (PAQ). Because available PAQ may not capture the full range of PA in which urban Chinese adults engage, a PAQ was developed for this purpose. We examined the validity of this PAQ and the 1-yr stability of PA in 545 ...

journal_title：Medicine and science in sports and exercise

authors： Peters TM,Shu XO,Moore SC,Xiang YB,Yang G,Ekelund U,Liu DK,Tan YT,Ji BT,Schatzkin AS,Zheng W,Chow WH,Matthews CE,Leitzmann MF

更新日期：2010-12-01 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

abstract：PURPOSE:To validate the 7-d Physical Activity Recall (PAR) telephone interview version and its activity intensity categories. METHODS:Seventy-four adults (47 women, 27 men), ranging in age (18-67) and activity levels, were interviewed by phone and in-person using the same PAR protocol. Each participant wore a TriTrac-...

journal_title：Medicine and science in sports and exercise

authors： Hayden-Wade HA,Coleman KJ,Sallis JF,Armstrong C

更新日期：2003-05-01 00:00:00

abstract：:This article provides an overview of the history behind the physiological concepts defining the role of the arterial baroreflexes and their regulation of arterial blood pressure during dynamic exercise. Initially, the case is made as to "why the arterial baroreflexes must be involved with blood pressure regulation dur...

journal_title：Medicine and science in sports and exercise

authors： Raven PB

更新日期：2008-12-01 00:00:00

abstract：:To investigate the effect of temperature stress on responses to static-dynamic work in patients with ischemic heart disease (IHD), 10 men with IHD shoveled gravel for 30 min in a warm (29 degrees C), neutral (24 degrees C), and cold (-8 degrees C) environment (on separate days). A pace of 15 lifts.min-1 was set, and t...

journal_title：Medicine and science in sports and exercise

authors： Dougherty SM,Sheldahl LM,Wilke NA,Levandoski SG,Hoffman MD,Tristani FE

更新日期：1993-07-01 00:00:00

abstract：:In a cross-sectional study using a two-stage probability sample (N = 1,600) of the population of Northern Ireland, there was an inverse association between the highest recorded recent activity and total cholesterol (P < or = 0.01), LDL (P < or = 0.01), triglyceride (P < or = 0.05) and Chol:HDL ratio (P < or = 0.001) i...

journal_title：Medicine and science in sports and exercise

authors： MacAuley D,McCrum EE,Stott G,Evans AE,Duly E,Trinick T,Sweeney K,Boreham CA

更新日期：1996-06-01 00:00:00

abstract：INTRODUCTION:Interval exercise training can elicit physiological adaptations similar to those of traditional endurance training, but with reduced time. However, the intense nature of specific protocols, particularly the "all-out" efforts characteristic of sprint interval training (SIT), may be perceived as being aversi...

journal_title：Medicine and science in sports and exercise

authors： Stork MJ,Kwan MY,Gibala MJ,Martin Ginis KA

更新日期：2015-05-01 00:00:00

abstract：BACKGROUND:Recent work has identified deficits in dual-task gait balance control for up to 2 months after adolescent concussion; however, how resumption of preinjury physical activities affects recovery is unknown. PURPOSE:The objective of this study is to examine how return to activity (RTA) affects recovery from con...

journal_title：Medicine and science in sports and exercise

authors： Howell DR,Osternig LR,Chou LS

更新日期：2015-04-01 00:00:00

abstract：PURPOSE:Physically active women have a reduced risk of breast cancer, but the dose of activity necessary and the role of energy balance and other potential mechanisms have not been fully explored in animal models. We examined treadmill and wheel running effects on mammary tumorigenesis and biomarkers in p53-deficient (...

journal_title：Medicine and science in sports and exercise

authors： Colbert LH,Westerlind KC,Perkins SN,Haines DC,Berrigan D,Donehower LA,Fuchs-Young R,Hursting SD

更新日期：2009-08-01 00:00:00

abstract：PURPOSE:To investigate the effects of speech production on physiological responses during sub maximal exercise of various intensities. METHODS:Three constant levels running at work intensities corresponding to 65%, 75%, and 85% of the subjects' (N = 14) VO(2) max were performed with and without talking. These loads we...

journal_title：Medicine and science in sports and exercise

authors： Meckel Y,Rotstein A,Inbar O

更新日期：2002-08-01 00:00:00

abstract：:Older adults have low rates meeting the physical activity (PA) guidelines and high sedentary time. Low PA and excessive sedentary time have been linked to adverse health outcomes. Less is known about whether exercise training influences sedentary time and PA in various intensities. PURPOSE:This study aimed to examine...

journal_title：Medicine and science in sports and exercise

authors： Wang X,Breneman CB,Sparks JR,Blair SN

更新日期：2020-12-01 00:00:00

abstract：PURPOSE:Neural adaptations to strength training have long been recognized, but knowledge of mechanisms remains incomplete. Using novel techniques and a design which limited experimental bias, this study examined if 4 wk of strength training alters voluntary activation and corticospinal transmission. METHODS:Twenty-one...

journal_title：Medicine and science in sports and exercise

authors： Nuzzo JL,Barry BK,Jones MD,Gandevia SC,Taylor JL

更新日期：2017-11-01 00:00:00