The influence of body mass in endurance bicycling.

abstract：UNLABELLED:Theoretically, critical torque (CT) is the maximal isometric torque that can be maintained without fatigue, and anaerobic work capacity (AWC) is the total "isometric work" associated with stored energy sources within the muscle. PURPOSE:The purpose of this study was twofold: 1) to determine whether there we...

journal_title：Medicine and science in sports and exercise

authors： Hendrix CR,Housh TJ,Mielke M,Zuniga JM,Camic CL,Johnson GO,Schmidt RJ

更新日期：2009-12-01 00:00:00

abstract：PURPOSE:To compare the effects of different patterns of regular brisk walking on fitness, risk factors for cardiovascular disease, and psychological well-being in previously sedentary adults. METHODS:Twenty-one subjects (14 women), aged 44.5 +/- 6.1 yr (mean +/- SD) were randomly assigned to two different, 6-wk progra...

journal_title：Medicine and science in sports and exercise

authors： Murphy M,Nevill A,Neville C,Biddle S,Hardman A

更新日期：2002-09-01 00:00:00

abstract：:Estimates of muscular efficiency in competitive and recreational cyclists at similar work intensities and cycling frequencies were examined. Twelve healthy college-age male nonsmoker volunteers were grouped as either competitive (CC; N = 6) or recreational (RC; N = 6) cyclists based upon previous cycling experience. S...

journal_title：Medicine and science in sports and exercise

authors： Nickleberry BL Jr,Brooks GA

更新日期：1996-11-01 00:00:00

abstract：:Cardiorespiratory characteristics, relative body fat, grip strength and selected skinfolds, circumferences and bone diameters were determined in 25 males and 25 females (31--55 yr) whose exclusive mode of regular exercise was tennis (9.7--11.1 hr/wk). Mean resting heart rates were 54 beats/min for the males and 61 bea...

journal_title：Medicine and science in sports and exercise

authors： Vodak PA,Savin WM,Haskell WL,Wood PD

更新日期：1980-01-01 00:00:00

abstract：PURPOSE:To compare the historical evolution of performance for males and females in anaerobically dominated sprint events in three different sports: running, swimming, and speed skating. METHODS:Times of the top six finishers in a total of 283 men's and women's Olympic and world championship finals held between 1952 a...

journal_title：Medicine and science in sports and exercise

authors： Seiler S,De Koning JJ,Foster C

更新日期：2007-03-01 00:00:00

abstract：PURPOSE:Previous studies have suggested that higher levels of physical activity may lower lung cancer risk; however, few prospective studies have evaluated lung cancer mortality in relation to cardiorespiratory fitness (CRF), an objective marker of recent physical activity habits. METHODS:Thirty-eight thousand men, ag...

journal_title：Medicine and science in sports and exercise

authors： Sui X,Lee DC,Matthews CE,Adams SA,Hébert JR,Church TS,Lee CD,Blair SN

更新日期：2010-05-01 00:00:00

abstract：:To determine the relation of plasma volume change to intensity of weight lifting, blood samples were obtained from 15 males [mean (+/- SD) age = 22.3 +/- 3.2 yr; height = 176.3 +/- 6.9 cm; weight = 73.0 +/- 11.7 kg] before and over a 60-min period following weight lifting at four different intensities [40, 50, 60, and...

journal_title：Medicine and science in sports and exercise

authors： Collins MA,Cureton KJ,Hill DW,Ray CA

更新日期：1989-04-01 00:00:00

abstract：:The use of 14C as tracer to measure lactate turnover and oxidation and its role in gluconeogenesis are discussed. Lactate is formed as well as utilized in many cells, and most of it in the body is present within cells so that interpretation of 14C data from labelled lactate is more complex and more difficult than that...

journal_title：Medicine and science in sports and exercise

authors： Katz J

更新日期：1986-06-01 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：:In many interventions that are based on an exercise program intended to induce weight loss, the mean weight loss observed is modest and sometimes far less than what the individual expected. The individual responses are also widely variable, with some individuals losing a substantial amount of weight, others maintainin...

journal_title：Medicine and science in sports and exercise

authors： Melanson EL,Keadle SK,Donnelly JE,Braun B,King NA

更新日期：2013-08-01 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:This study was conducted to determine the effect of high pedaling cadences on maximal cycling power output (W(max)). METHODS:Nine well-trained cyclists performed a continuous, incremental cycle-ergometer test to exhaustion (25 W increases every 3 min) either at 80, 100, or 120 rpm on three different occasions....

journal_title：Medicine and science in sports and exercise

authors： Mora-Rodriguez R,Aguado-Jimenez R

更新日期：2006-05-01 00:00:00

abstract：:The present investigation tested the hypotheses that there would be greater prevalence of expiratory flow limitation (EFL) in endurance-trained (ET) youth cyclists compared with a recreationally active control (CON) group. METHODS:Twelve ET youth male cyclists (16.3 ± 1.0 yr (13-18 yr), 176.5 ± 6.2 cm, 64.2 ± 5.9 kg)...

journal_title：Medicine and science in sports and exercise

authors： Cox KR,Smith JR,Luden ND,Saunders MJ,Kurti SP

更新日期：2020-09-01 00:00:00

abstract：UNLABELLED:Limited information is currently available regarding muscle synergistic patterns and triggered reflex responses during dynamic weight-bearing activities in the presence of muscle fatigue. PURPOSE:The purpose of this study was to examine the effects of quadriceps muscle fatigue on patterns of muscle activati...

journal_title：Medicine and science in sports and exercise

authors： Ballantyne BT,Shields RK

更新日期：2010-09-01 00:00:00

abstract：INTRODUCTION:This study examined the effect of endurance exercise on dendritic arborization in the dentate gyrus subregion in rodents exposed to a predator scent stress (PSS). METHODS:Sprague-Dawley rats were randomly assigned to one of four treatment groups. In two of the groups, rats were unexposed to PSS but either...

journal_title：Medicine and science in sports and exercise

authors： Hoffman JR,Cohen H,Ostfeld I,Kaplan Z,Zohar J,Cohen H

更新日期：2016-12-01 00:00:00

abstract：:Hydrostatic weighing (HW) was performed at residual volume (RV) and total lung capacity without head submersion (TLCNS). Ninety-five males (25.6 +/- 4.9 yr) and 87 females (22.6 +/- 5.2 yr) were studied at two laboratory sites using identical protocols. Twenty males and 20 females were separated from the original grou...

journal_title：Medicine and science in sports and exercise

authors： Donnelly JE,Brown TE,Israel RG,Smith-Sintek S,O'Brien KF,Caslavka B

更新日期：1988-02-01 00:00:00

abstract：:The purpose of this study was to determine whether efferent sympathetic nerve activity is different to resting skeletal muscles from the exercising and nonexercising limb. MSNA was measured by microneurography in both legs (peroneal nerve) in six subjects during 2 min of unilateral isometric knee extension (IKE; 10-30...

journal_title：Medicine and science in sports and exercise

authors： Ray CA,Mark AL

更新日期：1995-02-01 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

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:Development of an endurance training-overtraining protocol for Wistar rats that includes increased workload and is characterized by analyses of performance and biomarkers. METHODS:The running protocol lasted 11 wk: 8 wk of daily exercise sessions followed by 3 wk of increasing training frequency (two, three, a...

journal_title：Medicine and science in sports and exercise

authors： Hohl R,Ferraresso RL,De Oliveira RB,Lucco R,Brenzikofer R,De Macedo DV

更新日期：2009-05-01 00:00:00

abstract：:This study examined the association between aerobic, caloric exercise expenditure and life status (living vs deceased) as well as the prevalence rates of hypertension (HBP) and cardiovascular disease (CVD) in former male athletes (ATH) and non-athletes (N-ATH). The initial survey for this study was done in 1952. Follo...

journal_title：Medicine and science in sports and exercise

authors： Quinn TJ,Sprague HA,Van Huss WD,Olson HW

更新日期：1990-12-01 00:00:00

abstract：INTRODUCTION:The significant sex disparity in sports-related knee injuries may be due to underlying differences in motor control. Although the development of sex-specific movement patterns is likely multifactorial, this study specifically focuses on the potential modulatory role of sex hormones. PURPOSE:This study aim...

journal_title：Medicine and science in sports and exercise

authors： Casey E,Hameed F,Dhaher YY

更新日期：2014-03-01 00:00:00

abstract：PURPOSE:There is a lack of robust evidence to support a daily step count target that equates to current physical activity guidelines in children and youth. This information would be useful to researchers and practitioners who are using pedometers to monitor physical activity. METHODS:Accelerometer and pedometer data c...

journal_title：Medicine and science in sports and exercise

authors： Colley RC,Janssen I,Tremblay MS

更新日期：2012-05-01 00:00:00

abstract：PURPOSE:The development of valid measures of built environments relevant for physical activity is an important step toward controlling the global epidemic of physical inactivity-related noncommunicable diseases and deaths. This study assessed the construct validity of a self-report neighborhood environment walkability ...

journal_title：Medicine and science in sports and exercise

authors： Oyeyemi AL,Conway TL,Adedoyin RA,Akinroye KK,Aryeetey R,Assah F,Cain KL,Gavand KA,Kasoma SS,Kolbe-Alexander TL,Lambert EV,Larouche R,Moss SJ,Ocansey R,Onywera VO,Prista A,Tremblay MS,Sallis JF

更新日期：2017-03-01 00:00:00

abstract：:Twelve college-age men exercised on a bicycle ergometer to VO2max and at 60, 70, and 80% VO2max for 30 min to determine the effects of exercise intensity on plasma beta-endorphin (B-EP). The time course for alterations in B-EP and the relationship to lactate were also examined. Following the VO2max test, the three sub...

journal_title：Medicine and science in sports and exercise

authors： Goldfarb AH,Hatfield BD,Armstrong D,Potts J

更新日期：1990-04-01 00:00:00

abstract：PURPOSE:FRESH START is a randomized controlled trial that will test whether a personally tailored, distance-medicine-based program will increase exercise and fruit and vegetable consumption, and decrease fat intake of individuals recently diagnosed with breast or prostate cancer. METHODS:Early-stage breast and prostat...

journal_title：Medicine and science in sports and exercise

authors： Demark-Wahnefried W,Clipp EC,McBride C,Lobach DF,Lipkus I,Peterson B,Clutter Snyder D,Sloane R,Arbanas J,Kraus WE

更新日期：2003-03-01 00:00:00

abstract：PURPOSE:The present study examined the effect of extreme old age on the plasticity of the rat plantaris muscle in response to an increase in mechanical load. METHODS:Male Fischer 344 rats, aged 7 months (adult) and 25 months (old) underwent bilateral surgical ablation of the gastrocnemius muscle to functionally overlo...

journal_title：Medicine and science in sports and exercise

authors： Linderman JK,Blough ER

更新日期：2002-07-01 00:00:00

abstract：PURPOSE:The main purpose of the present study was to measure the total oxygen consumed, accumulation of blood metabolites, and performance during alternating intensity exercise before and after a period of creatine (Cr) loading in well-trained humans. METHODS:Fourteen males were randomly assigned to two groups of seve...

journal_title：Medicine and science in sports and exercise

authors： Rico-Sanz J,Mendez Marco MT

更新日期：2000-02-01 00:00:00

abstract：PURPOSE:This study aims to examine whether muscle glycogen availability is associated with fatigue in a repeated exercise bout following short-term recovery. METHODS:Ten endurance-trained individuals underwent two trials in a repeated-measures experimental design, each involving an initial run to exhaustion at 70% of ...

journal_title：Medicine and science in sports and exercise

authors： Alghannam AF,Jedrzejewski D,Tweddle MG,Gribble H,Bilzon J,Thompson D,Tsintzas K,Betts JA

更新日期：2016-01-01 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