Is running style and economy affected by wearing respiratory apparatus?

abstract：:Perceptual and physiological congruity was examined during recovery from high-intensity dynamic exercise. Nine males (24.8 +/- 0.6 yr; VO2max; 52.3 +/- 1.5 ml.kg-1.min-1) undertook in random order four maximal treadmill protocols. Treadmill speed was held constant (5.3 km.h-1) while grade was incremented by 2, 4, 6, o...

journal_title：Medicine and science in sports and exercise

authors： Robertson RJ,Nixon PA,Caspersen CJ,Metz KF,Abbott RA,Goss FL

更新日期：1992-03-01 00:00:00

abstract：PURPOSE:The purpose of this study was to examine the ability of the YMCA submaximal exercise test protocol using a total body recumbent stepper to predict V˙O(2peak). METHODS:Of 112 individuals initially screened, 110 individuals with low to moderate cardiovascular disease risk met the inclusion criteria for participa...

journal_title：Medicine and science in sports and exercise

authors： Billinger SA,VAN Swearingen E,McClain M,Lentz AA,Good MB

更新日期：2012-08-01 00:00:00

abstract：PURPOSE:The effects of chronic eccentric-only versus concentric-only exercise on muscle physiology and blood biochemistry were investigated. METHODS:Twenty women performed on an isokinetic dynamometer a concentric (n = 10;mean ± SEM: age = 21.0 ± 0.4 yr, body fat = 22.0% ± 0.9%) or an eccentric (n = 10, age = 20.0 ± 0...

journal_title：Medicine and science in sports and exercise

authors： Paschalis V,Nikolaidis MG,Theodorou AA,Panayiotou G,Fatouros IG,Koutedakis Y,Jamurtas AZ

更新日期：2011-01-01 00:00:00

abstract：:Studies using wearable sensors to measure posture, physical activity (PA), and sedentary behavior typically use a single sensor worn on the ankle, thigh, wrist, or hip. Although the use of single sensors may be convenient, using multiple sensors is becoming more practical as sensors miniaturize. PURPOSE:We evaluated ...

journal_title：Medicine and science in sports and exercise

authors： Tang QU,John D,Thapa-Chhetry B,Arguello DJ,Intille S

更新日期：2020-08-01 00:00:00

abstract：PURPOSE:The Compendium of Physical Activities was developed to enhance the comparability of results across studies using self-report physical activity (PA) and is used to quantify the energy cost of a wide variety of PA. We provide the second update of the Compendium, called the 2011 Compendium. METHODS:The 2011 Compe...

journal_title：Medicine and science in sports and exercise

authors： Ainsworth BE,Haskell WL,Herrmann SD,Meckes N,Bassett DR Jr,Tudor-Locke C,Greer JL,Vezina J,Whitt-Glover MC,Leon AS

更新日期：2011-08-01 00:00:00

abstract：PURPOSE:We investigated ethnic differences in areal bone mineral density (aBMD; g x cm(-2)) and its determinants at two levels of maturity in Asian- and Caucasian-Canadian girls. METHODS:Participants were 131 Asian (26 Tanner breast stage I (aTI) and 30 Tanner II (aTII)), and Caucasian (30 Tanner I (cTI) and 45 Tanner...

journal_title：Medicine and science in sports and exercise

authors： Mackelvie KJ,McKay HA,Khan KM,Crocker PR

更新日期：2001-11-01 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: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：PURPOSE:Physical fitness and physical activity tracking data enhance our understanding as to when children settle into their long-term exercise and fitness patterns and, therefore. provide insight as to when programs focusing on preventing sedentary adults behaviors should be initiated. METHODS:In this paper, the trac...

journal_title：Medicine and science in sports and exercise

authors： Janz KF,Dawson JD,Mahoney LT

更新日期：2000-07-01 00:00:00

abstract：INTRODUCTION:Despite the widespread utilization of the Balance Error Scoring System (BESS) in the evaluation of concussion, it has been criticized for its error-based scoring that is susceptible to floor and ceiling effects and substantial inter-rater variability. A biomechanical outcome, Cleveland Clinic Postural Stab...

journal_title：Medicine and science in sports and exercise

authors： Linder SM,Ozinga SJ,Koop MM,Dey T,Figler R,Cruickshank J,Alberts JL

更新日期：2018-10-01 00:00:00

abstract：PURPOSE:A 20-d 6 degrees head-down tilt bed rest project was conducted to evaluate the effect of dynamic leg press and plantar flexion resistance training on muscle size and function in human plantar flexors (PF) throughout the prolonged bed rest. METHODS:Twelve healthy men participated in this study and were divided ...

journal_title：Medicine and science in sports and exercise

authors： Akima H,Ushiyama J,Kubo J,Tonosaki S,Itoh M,Kawakami Y,Fukuoka H,Kanehisa H,Fukunaga T

更新日期：2003-04-01 00:00:00

abstract：:Anthropometric and demographic characteristics are important determinants of exercise performance in healthy subjects, but their influence has not yet been studied in severe chronic heart failure, although peak oxygen uptake is frequently assessed in such patients for prognostic purposes. The aim of the present analys...

journal_title：Medicine and science in sports and exercise

authors： Pardaens K,Vanhaecke J,Fagard RH

更新日期：1997-06-01 00:00:00

abstract：PURPOSE:This study aimed to examine ethnic differences in objectively measured physical activity (PA) and the relationship between PA and metabolic risk factors. METHODS:The analysis included 2566 participants of the Dallas Heart Study (53% non-Hispanic black, 32% non-Hispanic white, and 15% Hispanic) who wore an acce...

journal_title：Medicine and science in sports and exercise

authors： Lakoski SG,Kozlitina J

更新日期：2014-06-01 00:00:00

abstract：PURPOSE:To examine relationships between selected sociodemographic, health-related and environmental factors and levels of physical activity in older adults across three age groups. METHODS:Seven hundred sixty-four older adults (mean age = 77.4 +/- 8.6 yr) from a midsize Canadian city completed a self-administered que...

journal_title：Medicine and science in sports and exercise

authors： Chad KE,Reeder BA,Harrison EL,Ashworth NL,Sheppard SM,Schultz SL,Bruner BG,Fisher KL,Lawson JA

更新日期：2005-10-01 00:00:00

abstract：PURPOSE:Endurance training improves skeletal muscular function including energy metabolism and structure. Sex steroid hormones partly contribute to the exercise-induced muscular adaptations. Recently, we demonstrated that skeletal muscle contains steroidogenic converting enzymes to synthesize sex steroid hormones and a...

journal_title：Medicine and science in sports and exercise

authors： Aizawa K,Iemitsu M,Maeda S,Mesaki N,Ushida T,Akimoto T

更新日期：2011-11-01 00:00:00

abstract：PURPOSE:We transposed the concept of effectiveness of force application used in pedaling mechanics to calculate the ratio of forces (RF) during sprint running and tested the hypothesis that field sprint performance was related to the technical ability to produce high amounts of net positive horizontal force. This abili...

journal_title：Medicine and science in sports and exercise

authors： Morin JB,Edouard P,Samozino P

更新日期：2011-09-01 00:00:00

abstract：PURPOSE:Recovery of ambulatory function after stroke is routinely assessed using standardized subject- or observer-rated instruments that do not directly measure ambulatory activities in the home-community setting. Accuracy of conventional pedometers in stroke patients is not established, limiting their application in ...

journal_title：Medicine and science in sports and exercise

authors： Macko RF,Haeuber E,Shaughnessy M,Coleman KL,Boone DA,Smith GV,Silver KH

更新日期：2002-03-01 00:00:00

abstract：UNLABELLED:The protective effects of cardiorespiratory fitness (CRF) on hypertension (HTN) are well known; however, the association between muscular strength and incidence of HTN has yet to be examined. PURPOSE:This study evaluated the strength-HTN association with and without accounting for CRF. METHODS:Participants...

journal_title：Medicine and science in sports and exercise

authors： Maslow AL,Sui X,Colabianchi N,Hussey J,Blair SN

更新日期：2010-02-01 00:00:00

abstract：:Running technique and economy (VO2submax) were examined before and after a 6-wk period of running training. Fifteen males were filmed and performed 10-min economy runs at 3.36 m.s-1 on a treadmill. An incremental treadmill test was used to record running performance and maximal oxygen consumption (VO2max). Subjects we...

journal_title：Medicine and science in sports and exercise

authors： Lake MJ,Cavanagh PR

更新日期：1996-07-01 00:00:00

abstract：:Acute bouts of aerobic exercise have been consistently associated with significant reductions in anxiety, but explanations for this effect remain elusive. The cerebral lateralization hypothesis predicts that anxiety reductions would be caused by a postexercise decrease in anterior right, relative to left, hemisphere a...

journal_title：Medicine and science in sports and exercise

authors： Petruzzello SJ,Landers DM

更新日期：1994-08-01 00:00:00

abstract：PURPOSE:Strain magnitude is known to be a primary determinant of the osteogenic response to loading. However, whether bone adaptation to muscle loading is determined primarily by load magnitude is unclear. The purpose of this study was to determine the contribution of load magnitude from muscle action on the site-speci...

journal_title：Medicine and science in sports and exercise

authors： Hawkins SA,Schroeder ET,Wiswell RA,Jaque SV,Marcell TJ,Costa K

更新日期：1999-09-01 00:00:00

abstract：PURPOSE:To explore the influence of the epicardial fat (EF) tissue on aspects of heart rate recovery (HRR) and cardiorespiratory fitness (V O2peak) in middle-aged men. METHODS:A cross-sectional analysis of EF thickness was performed on 101 overweight or obese men. The men were categorized into low-EF, moderate-EF, and...

journal_title：Medicine and science in sports and exercise

authors： Kim MK,Tanaka K,Kim MJ,Matsuo T,Tomita T,Ohkubo H,Maeda S,Ajisaka R

更新日期：2010-03-01 00:00:00

abstract：PURPOSE:To examine the effect of pelvic stabilization and two lower-limb configurations on the EMG activity of back and hip extensor muscles during a dynamic back extension exercise on a machine and to compare them between sexes. METHODS:Twenty-two healthy volunteers (11 men and 11 women) performed five trunk flexion-...

journal_title：Medicine and science in sports and exercise

authors： da Silva RA,Larivière C,Arsenault AB,Nadeau S,Plamondon A

更新日期：2009-02-01 00:00:00

abstract：PURPOSE:This is a case study of an aerobically trained, multisport, female athlete (age = 39) diagnosed with stage IIIc human epidermal growth factor receptor 2 positive breast cancer. The focus of the study is on measures of cardiorespiratory fitness (V˙O2peak) through the course of cancer therapy. METHODS:A symptom-...

journal_title：Medicine and science in sports and exercise

authors： Savage PD,Dittus K,Lakoski SG

更新日期：2016-10-01 00:00:00

abstract：PURPOSE:According to the force-velocity relationship of human skeletal muscle, the maximal load one can lift is limited by the concentric movement phase, and the eccentric phase is always underloaded. In the present study, we hypothesized that acute exercise training using an eccentric overload compared with standard l...

journal_title：Medicine and science in sports and exercise

authors： Hortobágyi T,Devita P,Money J,Barrier J

更新日期：2001-07-01 00:00:00

abstract：PURPOSE:The purpose of the current study was to investigate the associations between the GNB3 C825T polymorphism, body fatness and fitness, and blood pressure in a sample of young Korean men. METHODS:A total of 282 apparently healthy Korean men (nonobese N = 152, obese N = 130) aged 19-33 yr participated in the study....

journal_title：Medicine and science in sports and exercise

authors： Lee J,Lee S,Shin S,Kang HS

更新日期：2005-07-01 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：PURPOSE:High-intensity interval training (HIIT) represents a potent stimulus to the dynamic oxygen uptake (V˙O2) response in adults, but whether the same is evident in youth is unknown. HIIT has also been suggested to place a lower demand on the respiratory system, decreasing the likelihood of exacerbation in those wit...

journal_title：Medicine and science in sports and exercise

authors： McNarry MA,Winn CON,Davies GA,Eddolls WTB,Mackintosh KA

更新日期：2020-06-01 00:00:00

abstract：:Although hyponatremia (HN) has been reported among endurance athletes, its etiology often remains uncertain and of great interest to clinicians and physiologists. This case report presents physiologic evidence regarding the etiology and development of HN during exercise in the heat. A 21-yr-old male volunteer (K.G.) u...

journal_title：Medicine and science in sports and exercise

authors： Armstrong LE,Curtis WC,Hubbard RW,Francesconi RP,Moore R,Askew EW

更新日期：1993-05-01 00:00:00

abstract：:In the present studies, the Leuven Tennis Performance Test (LTPT), a newly developed test procedure to measure stroke performance in match-like conditions in elite tennis players, was evaluated as to its value for research purposes. The LTPT is enacted on a regular tennis court. It consists of first and second service...

journal_title：Medicine and science in sports and exercise

authors： Vergauwen L,Spaepen AJ,Lefevre J,Hespel P

更新日期：1998-08-01 00:00:00