Minnesota leisure time activity questionnaire and doubly labeled water in adolescents.

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:The main purpose of the present investigation was to test whether and to what extent familial/genetic factors are involved in the changes of postheparin lipoprotein lipase (deltaPH-LPL) activity and triglyceride (deltaTG) levels in response to exercise training. Additional hypotheses were also tested as to whet...

journal_title：Medicine and science in sports and exercise

authors： Hong Y,Rice T,Gagnon J,Pérusse L,Province M,Bouchard C,Leon AS,Skinner JS,Wilmore JH,Rao DC,Després JP

更新日期：2000-08-01 00:00:00

abstract：PURPOSE:The purpose of this study was to evaluate energy balance and body composition in 42 gymnasts (mean age = 15.5 yr) and 20 runners (mean age = 26.6 yr), all of whom were on national teams or were nationally ranked. METHODS:Athletes were assessed for body composition using DEXA and skinfolds, and energy balance w...

journal_title：Medicine and science in sports and exercise

authors： Deutz RC,Benardot D,Martin DE,Cody MM

更新日期：2000-03-01 00:00:00

abstract：PURPOSE:The present study assessed the factorial validity and gender invariance of the Social Physique Anxiety Scale (SPAS) using a sample of young adolescents. Existing SPAS 12-item, one- and two-factor and truncated, one-factor (i.e., nine-item and seven-item) measurement models reported in the adult literature were ...

journal_title：Medicine and science in sports and exercise

authors： Smith AL

更新日期：2004-03-01 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：PURPOSE:The purpose of this study was to investigate the influence of different cycling cadences on metabolic and kinematic parameters during subsequent running. METHODS:Eight triathletes performed two incremental tests (running and cycling) to determine maximal oxygen uptake (VO2max) and ventilatory threshold (VT) va...

journal_title：Medicine and science in sports and exercise

authors： Vercruyssen F,Brisswalter J,Hausswirth C,Bernard T,Bernard O,Vallier JM

更新日期：2002-03-01 00:00:00

abstract：PURPOSE:To quantify the relationship between total training load and running performance during the most important competitions of the season (national cross-country championships, 4.175- and 10.130-km races). METHODS:Eight well-trained, subelite endurance runners (age (mean+/-SD): 23+/-2 yr; VO2max: 70.0+/-7.3 mL.kg....

journal_title：Medicine and science in sports and exercise

authors： Esteve-Lanao J,San Juan AF,Earnest CP,Foster C,Lucia A

更新日期：2005-03-01 00:00:00

abstract：PURPOSE:Above a given exercise intensity, rapid muscle fatigue will occur. We explored the possibility of assessing torque threshold for peripheral fatigue during single-legged repetitive isometric knee extensor exercise. We hypothesized this fatigue threshold to be related to the general aerobic fitness level and the ...

journal_title：Medicine and science in sports and exercise

authors： de Ruiter CJ,Maas EA,Wesseling MG,de Haan A

更新日期：2012-07-01 00:00:00

abstract：:Physical inactivity has been linked to rates of obesity, diabetes, and heart disease through insulin resistance and other mechanisms. Although sedentary workplace environments have unintentionally contributed to the risk for chronic diseases, innovations in the workplace environment could potentially rectify this publ...

journal_title：Medicine and science in sports and exercise

authors： Han HO,Lim J,Viskochil R,Aguiar EJ,Tudor-Locke C,Chipkin SR

更新日期：2018-10-01 00:00:00

abstract：PURPOSE:This study aimed to determine the effect of a caffeine-containing supplement on golf-specific performance and fatigue during a 36-hole competitive golf tournament. METHODS:Twelve male golfers (34.8 ± 13.9 yr, 175.9 ± 9.3 cm, 81.23 ± 13.14 kg) with a United States Golf Association handicap of 3-10 participated ...

journal_title：Medicine and science in sports and exercise

authors： Mumford PW,Tribby AC,Poole CN,Dalbo VJ,Scanlan AT,Moon JR,Roberts MD,Young KC

更新日期：2016-01-01 00:00:00

abstract：PURPOSE:This study investigated the effects of the menstrual cycle on prolonged exercise performance both in temperate (20°C, 45% relative humidity) and hot, humid (32°C, 60% relative humidity) conditions. METHODS:For each environmental condition, 12 recreationally active females were tested during the early follicula...

journal_title：Medicine and science in sports and exercise

authors： Janse DE Jonge XA,Thompson MW,Chuter VH,Silk LN,Thom JM

更新日期：2012-11-01 00:00:00

abstract：PURPOSE:The purpose of this study was to investigate neuromuscular characteristics and muscle power as determinants of distance running performance. METHODS:Seventeen male endurance athletes performed a 5-km time trial (5K) that included three separate constant-velocity 200-m laps during the course and a maximal 20-m ...

journal_title：Medicine and science in sports and exercise

authors： Paavolainen LM,Nummela AT,Rusko HK

更新日期：1999-01-01 00:00:00

abstract：PURPOSE:Highly trained endurance athletes train and race at relatively high intensities and are often confronted with challenges throughout a running event. The purpose of this study was to examine the effects of the anticipation of a proposed challenge on effort sense, heart rate (HR), ventilation ([dotVE), and ventil...

journal_title：Medicine and science in sports and exercise

authors： Acevedo EO,Dzewaltowski DA,Kubitz KA,Kraemer RR

更新日期：1999-10-01 00:00:00

abstract：PURPOSE:The effect of quantified resistance and high impact exercise training on bone mass as modified by age and oral contraceptive (OCont) use in young women was studied. METHODS:Women were categorized by age (18-23 vs 24-31 yr) and OCont use, and were then randomized into either three sessions of resistance exercis...

journal_title：Medicine and science in sports and exercise

authors： Weaver CM,Teegarden D,Lyle RM,McCabe GP,McCabe LD,Proulx W,Kern M,Sedlock D,Anderson DD,Hillberry BM,Peacock M,Johnston CC

更新日期：2001-06-01 00:00:00

abstract：PURPOSE:In this study, we examined the effects of body position (from deep to high position) in slide boarding by well-trained cross-country skiers. The main hypothesis was that a deeper, more "crouched" position would lead to reduced air resistance and enhanced power production during explosive extension of the lower ...

journal_title：Medicine and science in sports and exercise

authors： Leirdal S,Saetran L,Roeleveld K,Vereijken B,Bråten S,Løset S,Holtermann A,Ettema G

更新日期：2006-08-01 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：INTRODUCTION/PURPOSE:Aging modifies neuromuscular activation of agonist and antagonist muscles during walking. Power training can evoke adaptations in neuromuscular activation that underlie gains in muscle strength and power but it is unknown if these adaptations transfer to dynamic tasks such as walking. We examined t...

journal_title：Medicine and science in sports and exercise

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

更新日期：2017-11-01 00:00:00

abstract：INTRODUCTION:Poor muscle quality and sedentary behavior are risk factors for metabolic dysfunction in children and adolescents. However, because longitudinal data are scarce, relatively little is known about how changes in muscle quality and physical activity influence bone development. PURPOSE:In a 2-yr longitudinal ...

journal_title：Medicine and science in sports and exercise

authors： Farr JN,Laddu DR,Blew RM,Lee VR,Going SB

更新日期：2013-12-01 00:00:00

abstract：:The association of physical activity to the initiation of health risk behaviors was examined in a 3-yr prospective study of a population-based cohort of 1245 adolescents aged 12-16 yr. Four hundred thirty-seven students (35% of the cohort) were identified at baseline via self-report survey as never having smoked cigar...

journal_title：Medicine and science in sports and exercise

authors： Aaron DJ,Dearwater SR,Anderson R,Olsen T,Kriska AM,Laporte RE

更新日期：1995-12-01 00:00:00

abstract：:The purpose of this study was to investigate the effects of active recovery (AR) on plasma lactate concentration [La] and anaerobic power output as measured during repeated bouts of intense exercise (6 s) against increasing braking forces. Ten male subjects performed two randomly assigned exercise trials: one with a 5...

journal_title：Medicine and science in sports and exercise

authors： Ahmaidi S,Granier P,Taoutaou Z,Mercier J,Dubouchaud H,Prefaut C

更新日期：1996-04-01 00:00:00

abstract：:The influence of anthropometry and body composition on running economy is unclear, with previous investigations involving small relatively homogeneous groups of runners and limited anthropometric/composition measurements. PURPOSE:To comprehensively investigate the relationships of anthropometry and body composition w...

journal_title：Medicine and science in sports and exercise

authors： Black MI,Allen SJ,Forrester SE,Folland JP

更新日期：2020-03-01 00:00:00

abstract：PURPOSE:To evaluate effectively interventions to increase physical activity among older persons, reliable and valid measures of physical activity are required that can also detect the expected types of physical activity changes in this population. This paper describes a self-report physical activity questionnaire for o...

journal_title：Medicine and science in sports and exercise

authors： Stewart AL,Mills KM,King AC,Haskell WL,Gillis D,Ritter PL

更新日期：2001-07-01 00:00:00

abstract：PURPOSE:The cold pain sensitivity in fighter pilots was studied by using a cold pressor test. METHODS:The pilots were divided into two groups: one group consisting of eight pilots (N = 8) who had experienced several acute in-flight neck pain attacks, and the control group (N = 8) who had not experienced these pain con...

journal_title：Medicine and science in sports and exercise

authors： Kemppainen P,Hämäläinen O,Könönen M

更新日期：1998-04-01 00:00:00

abstract：PURPOSE:A twin design was used to test whether the association between exercise behavior and heart rate and the association between exercise behavior and respiratory sinus arrhythmia (RSA) derive from a common genetic factor. METHODS:Data were available from 157 adolescent (aged 13-22) and 208 middle-aged twin pairs (...

journal_title：Medicine and science in sports and exercise

authors： De Geus EJ,Boomsma DI,Snieder H

更新日期：2003-08-01 00:00:00

abstract：PURPOSE:The asthmatic airway responds to exercise by bronchodilation (BD) during and bronchoconstriction (BC) after exercise. A refractory period induced by an initial exercise challenge that provides protection against BC during a subsequent exercise bout has also been observed. However, no studies examining during-ex...

journal_title：Medicine and science in sports and exercise

authors： Rundell KW,Spiering BA,Judelson DA,Wilson MH

更新日期：2003-01-01 00:00:00

abstract：PURPOSE:Serial evaluation of aerobic metabolism and exercise tolerance early after heart transplantation (HT). METHODS:Fifteen heart transplant recipients (HTR), aged 52.0 +/- 9.9 yr (mean +/- SD), not undergoing structured rehabilitation programs, were tested two to four times during the first 2 yr post-HT. As a refe...

journal_title：Medicine and science in sports and exercise

authors： Borrelli E,Pogliaghi S,Molinello A,Diciolla F,Maccherini M,Grassi B

更新日期：2003-11-01 00:00:00

abstract：INTRODUCTION:The GENEA shows high accuracy for classification of sedentary, household, walking, and running activities when sampling at 80 Hz on three axes. It is not known whether it is possible to decrease this sampling frequency and/or the number of axes without detriment to classification accuracy. The purpose of t...

journal_title：Medicine and science in sports and exercise

authors： Zhang S,Murray P,Zillmer R,Eston RG,Catt M,Rowlands AV

更新日期：2012-11-01 00:00:00

abstract：PURPOSE:A statistical method called "magnitude-based inference" (MBI) has gained a following in the sports science literature, despite concerns voiced by statisticians. Its proponents have claimed that MBI exhibits superior type I and type II error rates compared with standard null hypothesis testing for most cases. I ...

journal_title：Medicine and science in sports and exercise

authors： Sainani KL

更新日期：2018-10-01 00:00:00

abstract：:The purpose of this experiment was to determine whether reflexive, or more broadly, automatic hamstrings excitation could be elicited during isometric, maximum effort, step increases in knee extension torque. Eight healthy subjects without lower extremity dysfunction or injury performed maximum effort isometric knee e...

journal_title：Medicine and science in sports and exercise

authors： Grabiner MD,Koh TJ,Miller GF

更新日期：1992-10-01 00:00:00

abstract：PURPOSE:We performed two experiments to determine whether cutaneous microvascular adaptations in response to repeated core temperature (Tc) elevation are mediated by increases in skin blood flow (SkBF) and/or skin temperature. METHODS:Healthy subjects participated for 8 wk in thrice-weekly bouts of 30-min lower limb h...

journal_title：Medicine and science in sports and exercise

authors： Carter HH,Spence AL,Atkinson CL,Pugh CJ,Cable NT,Thijssen DH,Naylor LH,Green DJ

更新日期：2014-11-01 00:00:00