The Prevalence of Expiratory Flow Limitation in Youth Elite Male Cyclists.

abstract：:Oxidation-reduction (redox) based regulation of gene expression appears to be a fundamental regulatory mechanism in cell biology. This basic information has been exploited to develop novel strategies in clinical therapeutics. In contrast to the conventional idea that reactive species mostly serve as a trigger for oxid...

journal_title：Medicine and science in sports and exercise

authors： Sen CK

更新日期：2001-03-01 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:The purpose of this study was to examine the relative association of physical activity, cardiorespiratory fitness (CRF), and adiposity with C-reactive protein (CRP) in prepubescent children. METHODS:Forty-five prepubescent children (age = 9.4 ± 1.6 yr; 26 boys) were assessed for adiposity (percent fat) via dua...

journal_title：Medicine and science in sports and exercise

authors： Parrett AL,Valentine RJ,Arngrímsson SA,Castelli DM,Evans EM

更新日期：2010-11-01 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:To describe physical activity (PA) levels by race/ethnicity, age, gender, and weight status in a representative sample of US youth. METHODS:Cross-sectional data from the 2003-2004 and 2005-2006 National Health and Nutrition Examination Survey were combined and analyzed. Youth aged 6-19 yr with at least four 10...

journal_title：Medicine and science in sports and exercise

authors： Belcher BR,Berrigan D,Dodd KW,Emken BA,Chou CP,Spruijt-Metz D

更新日期：2010-12-01 00:00:00

abstract：:The relationship between VO2 and velocity of running (running economy) has been rather casually dealt with until very recently, and there still remains considerable disagreement as to the importance of this variable. Various factors which have been shown, or appear, to affect running economy include environment (tempe...

journal_title：Medicine and science in sports and exercise

authors： Daniels JT

更新日期：1985-06-01 00:00:00

abstract：BACKGROUND:Pedometry methods for collecting data in young populations are advancing, but it is unclear how many days of data are enough for population monitoring. METHODS:Using random-digit dialing, 11,669 5- to 19-yr-olds were recruited into the Canadian Physical Activity Levels among Youth study and mailed a data co...

journal_title：Medicine and science in sports and exercise

authors： Craig CL,Tudor-Locke C,Cragg S,Cameron C

更新日期：2010-03-01 00:00:00

abstract：PURPOSE:The purpose of the study was to investigate the core temperature responses to the induction of electrical exercise and to clarify whether an increase in temperature could be responsible for some of the observed reactions to acute and repeated exposure to electrical muscle stimulation. METHODS:The paralyzed thi...

journal_title：Medicine and science in sports and exercise

authors： Holme E,Mohr T,Kjaer M,Nielsen B

更新日期：2001-03-01 00:00:00

abstract：PURPOSE:the objective of this study was to characterize the biomechanical effects of step rate modification during running on the hip, knee, and ankle joints so as to evaluate a potential strategy to reduce lower extremity loading and risk for injury. METHODS:three-dimensional kinematics and kinetics were recorded fro...

journal_title：Medicine and science in sports and exercise

authors： Heiderscheit BC,Chumanov ES,Michalski MP,Wille CM,Ryan MB

更新日期：2011-02-01 00:00:00

abstract：PURPOSE:Exercise improves the diagnostic performance of ankle-to-brachial index (ABI) in the detection of exercise-induced arterial endofibrosis (EIAE). Pressure values for all four limbs are required to calculate ABI, but rapid systemic pressure changes occur during the recovery period from exercise. We checked whethe...

journal_title：Medicine and science in sports and exercise

authors： Le Faucheur A,Noury-Desvaux B,Jaquinandi V,Louis Saumet J,Abraham P

更新日期：2006-11-01 00:00:00

abstract：:Previous research on catecholamine (CA) response to exercise has linked heightened adiposity to a hypostress syndrome. In the present study a cognitive/psychomotor stressor was employed to determine whether this association exists during less metabolically challenging tasks. Moreover, because stress is manifested in a...

journal_title：Medicine and science in sports and exercise

authors： Sothmann MS,Hart BA,Horn TS

更新日期：1995-03-01 00:00:00

abstract：:Nine men participated in an exercise program (five days a week for 10 weeks) that was designed to strengthen the quadriceps muscles. This study was undertaken to determine if heavy resistance training results in an increase in endurance, Vo2max and whether the differences that are normally observed during bicycle and ...

journal_title：Medicine and science in sports and exercise

authors： Hickson RC,Rosenkoetter MA,Brown MM

更新日期：1980-01-01 00:00:00

abstract：PURPOSE:Exercise is associated with altered gut microbial composition, but studies have not investigated whether the gut microbiota and associated metabolites are modulated by exercise training in humans. We explored the impact of 6 wk of endurance exercise on the composition, functional capacity, and metabolic output ...

journal_title：Medicine and science in sports and exercise

authors： Allen JM,Mailing LJ,Niemiro GM,Moore R,Cook MD,White BA,Holscher HD,Woods JA

更新日期：2018-04-01 00:00:00

abstract：INTRODUCTION:The primary purpose of this study was to evaluate variability of sedentary behavior (SB) throughout a 7-d measurement period and to determine if <7 d of SB measurement would be comparable with the typical 7-d measurement period. METHODS:Retrospective data from Ball State University's Clinical Exercise Phy...

journal_title：Medicine and science in sports and exercise

authors： Donaldson SC,Montoye AH,Tuttle MS,Kaminsky LA

更新日期：2016-04-01 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：:Parasympathetic receptor blockade and the heart rate performance curve. Med. Sci Sports Sci., Vol. 30. No. 2, pp. 229-233, 1998. The aim of the present study was to investigate the influence of parasympathetic receptor blockade on the heart rate performance curve (HRPC). Twenty healthy male subjects performed a first ...

journal_title：Medicine and science in sports and exercise

authors： Pokan R,Hofmann P,Von Duvillard SP,Schumacher M,Gasser R,Zweiker R,Fruhwald FM,Eber B,Smekal G,Bachl N,Schmid P

更新日期：1998-02-01 00:00:00

abstract：PURPOSE:The objectives of this study were to: 1) establish a database of kinematic and EMG data during cutting movements, 2) describe normal muscle function and coordination of 12 lower extremity muscles during cutting movements susceptible to ankle sprains, and 3) identify potential muscle coordination deficiencies th...

journal_title：Medicine and science in sports and exercise

authors： Neptune RR,Wright IC,van den Bogert AJ

更新日期：1999-02-01 00:00:00

abstract：:The relationships between individual performance and lactate exchange and removal abilities were studies in 12 male rowers all subjected to three measurements on a rowing ergometer. An incremental exercise carried out to determine the maximal oxygen uptake (VO2max) and the corresponding maximal aerobic power (Pamax), ...

journal_title：Medicine and science in sports and exercise

authors： Messonnier L,Freund H,Bourdin M,Belli A,Lacour JR

更新日期：1997-03-01 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:Investigate hemodynamic responses of resistance exercise (RE) with moderate load (i.e., international guidelines for RE of patients) versus RE with high load in patients with coronary artery disease (CAD). METHODS:Medically stable male (n = 11) and female patients (n = 4) treated with PCI or percutaneous coron...

journal_title：Medicine and science in sports and exercise

authors： Gjøvaag TF,Mirtaheri P,Simon K,Berdal G,Tuchel I,Westlie T,Bruusgaard KA,Nilsson BB,Hisdal J

更新日期：2016-04-01 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：PURPOSE:To compare the physiological and performance adaptations between periodized and nonperiodized resistance training in women collegiate tennis athletes. METHODS:Thirty women (19 +/- 1 yr) were assigned to either a periodized resistance training group (P), nonperiodized training group (NV), or a control group (C)...

journal_title：Medicine and science in sports and exercise

authors： Kraemer WJ,Hakkinen K,Triplett-Mcbride NT,Fry AC,Koziris LP,Ratamess NA,Bauer JE,Volek JS,McConnell T,Newton RU,Gordon SE,Cummings D,Hauth J,Pullo F,Lynch JM,Fleck SJ,Mazzetti SA,Knuttgen HG

更新日期：2003-01-01 00:00:00

abstract：:The effect of physical exercise and vitamin C on iron absorption after oral iron administration was investigated. Eight healthy male subjects without iron deficiency were studied after administration of 100 mg ferric sodium citrate complex, 100 mg ferric sodium citrate complex with 200 mg ascorbic acid, and without ir...

journal_title：Medicine and science in sports and exercise

authors： Schmid A,Jakob E,Berg A,Russmann T,König D,Irmer M,Keul J

更新日期：1996-12-01 00:00:00

abstract：PURPOSE:The magnitude of atrophy and strength loss induced by partial or complete disuse of skeletal muscles varies greatly among individuals. Factors predisposing some individuals to more extreme responses have not been identified. The purpose of this investigation was to determine whether 1) level of activity before ...

journal_title：Medicine and science in sports and exercise

authors： Miles MP,Heil DP,Larson KR,Conant SB,Schneider SM

更新日期：2005-11-01 00:00:00

abstract：PURPOSE:Little is known about whether acute exercise affects signs or symptoms of attention deficit/hyperactivity disorder (ADHD) in adults. This experiment sought to determine the effects of a single bout of moderate-intensity leg cycling exercise on measures of attention, hyperactivity, mood, and motivation to comple...

journal_title：Medicine and science in sports and exercise

authors： Fritz KM,O'Connor PJ

更新日期：2016-06-01 00:00:00

abstract：PURPOSE:The present longitudinal study assessed cardiorespiratory capacity and running economy of Olympic athletes over several decades to measure changes in fitness in an elite group during aging. METHODS:Twenty-six male runners training for the 1968 Olympics were recruited. HR, V˙O2max, ventilation, and running econ...

journal_title：Medicine and science in sports and exercise

authors： Everman S,Farris JW,Bay RC,Daniels JT

更新日期：2018-01-01 00:00:00

abstract：:The Age Discrimination in Employment Act has raised the issue of Bona Fide Occupational Qualifications for employment in the public safety sector. Complicating the issue is the number of lawsuits filed for violation of the Age Discrimination in Employment Act. Physical performance testing as an alternative to arbitrar...

journal_title：Medicine and science in sports and exercise

authors： Davis PO,Dotson CO

更新日期：1987-04-01 00:00:00

abstract：PURPOSE:There is increased interest in developing and disseminating health behavior interventions for cancer survivors. Challenges in these efforts include participant burden in traveling to central intervention sites and sustainability. The purpose of this article is to report various methods used to recruit breast ca...

journal_title：Medicine and science in sports and exercise

authors： Rogerino A,Grant LL,Wilcox H 3rd,Schmitz KH

更新日期：2009-07-01 00:00:00

abstract：UNLABELLED:We previously reported that a mathematical model could accurately predict steady-state road-cycling power when all the model parameters were known. Application of that model to competitive cycling has been limited by the need to obtain accurate parameter values, the non-steady-state nature of many cycling ev...

journal_title：Medicine and science in sports and exercise

authors： Martin JC,Gardner AS,Barras M,Martin DT

更新日期：2006-03-01 00:00:00

abstract：PURPOSE:The purpose of this study was to test the hypothesis that stretch-activated ion channel (SAC) function is essential for the repeated bout effect (RBE) in skeletal muscle. Specifically, we investigated if daily injections of streptomycin (a known SAC blocker) would abrogate the muscle's adaptive resistance to th...

journal_title：Medicine and science in sports and exercise

authors： Butterfield TA,Best TM

更新日期：2009-02-01 00:00:00