Regression analysis in biological research: sample size and statistical power.

abstract：:The effects of endurance training on aerobic power, and the relationship between aerobic power and running performance were investigated in 11 junior runners over a period of 5-to-7 years, starting from the age of 14. Aerobic power was measured using treadmill running and a protocol that involved increasing speed. The...

journal_title：Medicine and science in sports and exercise

authors： Murase Y,Kobayashi K,Kamei S,Matsui H

更新日期：1981-01-01 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:We evaluated the associations between accelerometer-estimated physical activity (PA) intensity and heart rate variability (HRV) and examined mediation of these associations by glycemic control indices and other cardiovascular disease risk factors. METHODS:Data were from 1668 participants (X[Combining Overline]...

journal_title：Medicine and science in sports and exercise

authors： Pope ZC,Gabriel KP,Whitaker KM,Chen LY,Schreiner PJ,Jacobs DR Jr,Sternfeld B,Carr JJ,Lloyd-Jones DM,Pereira MA

更新日期：2020-06-01 00:00:00

abstract：PURPOSE:This study was undertaken to determine whether endurance training is associated with changes in myocardial perfusion in humans. METHODS:Myocardial perfusion was measured in eleven trained and nine sedentary men at rest and during adenosine-stimulated hyperemia using positron emission tomography (PET). Left ven...

journal_title：Medicine and science in sports and exercise

authors： Kalliokoski KK,Nuutila P,Laine H,Luotolahti M,Janatuinen T,Raitakari OT,Takala TO,Knuuti J

更新日期：2002-06-01 00:00:00

abstract：PURPOSE:This study examined the relationship between age and gender with physical activity (PA) and how meeting of PA guidelines (PAGL) is related to socioeconomic status (SES) and sedentary behaviors (SB). METHODS:Data were collected from 11-, 13-, and 15-yr-old students in 32 countries participating in the Health Be...

journal_title：Medicine and science in sports and exercise

authors： Borraccino A,Lemma P,Iannotti RJ,Zambon A,Dalmasso P,Lazzeri G,Giacchi M,Cavallo F

更新日期：2009-04-01 00:00:00

abstract：PURPOSE:The purpose of this study was to examine and quantify the effect of repeated driving stints on the physiologic, metabolic, and hormonal responses of three professional endurance driver-athletes. METHODS:Core body temperature, HR, and physiological strain index were recorded during the Rolex 24 Hours of Daytona...

journal_title：Medicine and science in sports and exercise

authors： Potkanowicz ES,Ferguson DP,Greenshields JT

更新日期：2020-09-01 00:00:00

abstract：PURPOSE:Water polo is a sport involving extremely intense exercise training that might be expected to result in major cardiac adaptations. The purpose of our study was to evaluate cardiac size, determine VO(2max) of top-level water polo players, and compare the findings with those of other top-level athletes. METHODS:...

journal_title：Medicine and science in sports and exercise

authors： Pavlik G,Kemény D,Kneffel Z,Petrekanits M,Horváth P,Sidó Z

更新日期：2005-02-01 00:00:00

abstract：PURPOSE:Studies have shown that absolute intensity of physical activity is associated with reduced risk of preeclampsia. This analysis was performed to examine whether relative intensity may also be related to preeclampsia risk. METHODS:Using data from a case-control study conducted from 1998 to 2002, the authors asse...

journal_title：Medicine and science in sports and exercise

authors： Rudra CB,Williams MA,Lee IM,Miller RS,Sorensen TK

更新日期：2005-11-01 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：PURPOSE:Light-intensity physical activity (LIPA) accounts for much of adults' waking hours (≈40%) and substantially contributes to overall daily energy expenditure. Encompassing activity behaviors of low intensity (standing with little movement) to those of higher intensity (slow walking), LIPA is ubiquitous, yet littl...

journal_title：Medicine and science in sports and exercise

authors： Howard B,Winkler EA,Sethi P,Carson V,Ridgers ND,Salmon JO,Healy GN,Owen N,Dunstan DW

更新日期：2015-10-01 00:00:00

abstract：PURPOSE:To describe the influence of caffeine on physiological responses to exercise in young children and determine whether sex differences in these responses exist. METHODS:Twenty-six healthy 7- to 9-yr-old boys and 26 healthy 7- to 9-yr-old girls volunteered to participate in a double-blind, randomized, double cros...

journal_title：Medicine and science in sports and exercise

authors： Turley KR,Gerst JW

更新日期：2006-03-01 00:00:00

abstract：UNLABELLED:Physically active classroom lessons have been found to increase on-task behavior in children. Given that physical activity has been associated with an increased time on task (TOT) and that overweight children take fewer steps than normal weight children do, it was expected that benefits of the physical activ...

journal_title：Medicine and science in sports and exercise

authors： Grieco LA,Jowers EM,Bartholomew JB

更新日期：2009-10-01 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：:To study effort tolerance in elderly women with different physical activity backgrounds, 52 physically active (PA) and 42 sedentary control women (CO) aged 66-85 yr were assigned to perform cycle ergometer exercise to their volitional maximum. Oxygen uptake, respiratory exchange ratio (RER), heart rate, work power, an...

journal_title：Medicine and science in sports and exercise

authors： Kallinen M,Suominen H,Vuolteenaho O,Alen M

更新日期：1998-01-01 00:00:00

abstract：PURPOSE:The purpose of this study was to determine the accuracy and reliability of the following electronic pedometers for measuring steps: Freestyle Pacer Pro (FR), Kenz Lifecorder (KZ), New Lifestyles NL-2000 (NL), Omron HJ-105 (OM), Oregon Scientific PE316CA (OR), Sportline 330 (SL330) and 345 (SL345), Walk4Life LS ...

journal_title：Medicine and science in sports and exercise

authors： Schneider PL,Crouter SE,Lukajic O,Bassett DR Jr

更新日期：2003-10-01 00:00:00

abstract：INTRODUCTION:The purpose of this study was to validate a parent proxy record of children's physical activity with CSA Model 7164 accelerometers. METHODS:A parent proxy record was developed to record children's activity after school on weekdays and all day long on weekends for 7 d. Parents recorded both duration and in...

journal_title：Medicine and science in sports and exercise

authors： Bender JM,Brownson RC,Elliott MB,Haire-Joshu DL

更新日期：2005-08-01 00:00:00

abstract：PURPOSE:Fit individuals with metabolic syndrome (MetS) have lower mortality risk compared with less fit counterparts, despite the presence of obesity as a component of the syndrome. To understand the importance of fitness in treating this condition, we examined the association of fitness and fatness with central hemody...

journal_title：Medicine and science in sports and exercise

authors： Ramos JS,Ramos MV,Dalleck LC,Borrani F,Walker KB,Fassett RG,Sharman JE,Coombes JS

更新日期：2016-08-01 00:00:00

abstract：PURPOSE:To investigate muscle deoxygenation and neural drive-related changes during repeated cycling sprints in a fatiguing context. METHODS:Nine healthy male subjects performed a repeated-sprint test (consisting of 10 x 6-s maximal sprints interspaced by 30 s of recovery). Oxygen uptake was measured breath-by-breath;...

journal_title：Medicine and science in sports and exercise

authors： Racinais S,Bishop D,Denis R,Lattier G,Mendez-Villaneuva A,Perrey S

更新日期：2007-02-01 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：PURPOSE:Exercise has been well documented to exert a beneficial effect on cardiovascular health. The effective control of arterial pressure (BP) is essential from the standpoint of cardiovascular prevention. So far, no study has determined the long-term effect of regular training as a monotherapy on both BP at rest and...

journal_title：Medicine and science in sports and exercise

authors： Ketelhut RG,Franz IW,Scholze J

更新日期：2004-01-01 00:00:00

abstract：:Previous studies have suggested that, for the same power output, arm exercise requires higher oxygen uptake (VO2), carbon dioxide output (VCO2), and ventilation (VE) than leg exercise and that response kinetics are slower. To evaluate these differences, four healthy subjects performed a total of 95 arm cranking tests....

journal_title：Medicine and science in sports and exercise

authors： Casaburi R,Barstow TJ,Robinson T,Wasserman K

更新日期：1992-12-01 00:00:00

abstract：:We examined ratings of breathlessness (BRE) as a predictor of perceived exertion (RPE) during incremental cycling at power outputs of 50, 75, and 100 W. Young females (21 yr +/- 1.9) diagnosed with mild asthma (N = 25) were compared with females having normal lung function (N = 25) matched for age, VO2peak, trait anxi...

journal_title：Medicine and science in sports and exercise

authors： Yorio JM,Dishman RK,Forbus WR,Cureton KJ,Graham RE

更新日期：1992-08-01 00:00:00

abstract：:Sex is a potent modifier of the cardiovascular system because males and females differ in several aspects of the heart's biology and physiology. Epidemiologically, premenopausal women possess a distinct advantage over men in the occurrence of cardiovascular heart disease; however, this advantage shifts to men once a n...

journal_title：Medicine and science in sports and exercise

authors： Milne KJ,Noble EG

更新日期：2008-04-01 00:00:00

abstract：PURPOSE:The midfoot is instrumental to foot function; however, quantifying its roles in human movement has been difficult. A forceful dynamic activity like landing may help elucidate the midfoot's contribution to foot energetics and function. The main purpose of this study was to measure midtarsal joint kinematics and ...

journal_title：Medicine and science in sports and exercise

authors： Olsen MT,Bruening DA,Johnson AW,Ridge ST

更新日期：2019-01-01 00:00:00

abstract：PURPOSE:To observe the effects of exercise training on plasminogen activator inhibitor, type-1 (PAI-1), tissue plasminogen activator (tPA), and associated metabolic variables in sedentary men and women. METHODS:A randomized, controlled experimental design was used to examine the influence of 10 d of moderate-intensity...

journal_title：Medicine and science in sports and exercise

authors： Bodary PF,Yasuda N,Watson DD,Brown AS,Davis JM,Pate RR

更新日期：2003-11-01 00:00:00

abstract：PURPOSE:Trunk control is essential in ballet and may be compromised in dancers with a history of low back pain (LBP) by associated changes in motor control. This study aimed to compare trunk mechanical properties between professional ballet dancers with and without a history of LBP. As a secondary aim, we assessed whet...

journal_title：Medicine and science in sports and exercise

authors： Gildea JE,VAN DEN Hoorn W,Hides JA,Hodges PW

更新日期：2015-08-01 00:00:00

abstract：:The case of a table tennis player suffering from intra-articular loose bodies of the elbow is reported. The patient developed the first signs of osteochondritis dissecans of the right lateral humeral condyle at age 16 but underwent surgery only 6 yr later. He has now resumed training and competition, despite some resi...

journal_title：Medicine and science in sports and exercise

authors： Pintore E,Maffulli N

更新日期：1991-08-01 00:00:00

abstract：PURPOSE:Heart rate variability (HRV) indices are powerful independent prognostic factors of cardiovascular events and all cause mortality in patients with chronic heart failure (CHF). This study evaluates the influence of lifestyle on HRV in CHF patients. METHODS:Thirty-nine CHF patients (33 men, ischemic/dilated card...

journal_title：Medicine and science in sports and exercise

authors： Garet M,Degache F,Pichot V,Duverney D,Costes F,DA Costa A,Isaaz K,Lacour JR,Barthélémy JC,Roche F

更新日期：2005-08-01 00:00:00

abstract：PURPOSE:This is the first study to use the quiet eye (QE) as an objective measure of visuomotor control underpinning proficiency differences in children's motor coordination. METHODS:Fifty-seven, year 5 primary school children (9-10 yr old) completed the Movement Assessment Battery for Children, Second Edition (MABC-2...

journal_title：Medicine and science in sports and exercise

authors： Wilson MR,Miles CA,Vine SJ,Vickers JN

更新日期：2013-06-01 00:00:00

abstract：BACKGROUND:Stress fracture (SF) injuries in new recruits have long been attributed to low bone mineral density (BMD). Low areal BMD assessed using two-dimensional dual-energy x-ray absorptiometry imaging, however, reflects structural density and is affected by smaller measures of bone geometry. Recent studies support a...

journal_title：Medicine and science in sports and exercise

authors： Evans RK,Negus C,Antczak AJ,Yanovich R,Israeli E,Moran DS

更新日期：2008-11-01 00:00:00