Effects of controlled frequency breathing during exercise on blood gases and acid-base balance.

abstract：:This study evaluated the biceps femoris (BF), rectus femoris (RF), and vastus lateralis (VL) activation and activation ratios of a variety of resistance training exercises characterized by knee extension, and determined if subject strength or gender affects these variables. The exercises evaluated included the leg ext...

journal_title：International journal of sports medicine

authors： Ebben WP,Feldmann CR,Dayne A,Mitsche D,Alexander P,Knetzger KJ

更新日期：2009-01-01 00:00:00

abstract：:The aim of this study was to evaluate whether endurance athletes who exhibit deep bradycardia are more prone to arrhythmias and reflex syncope than their non-bradycardic peers. 46 healthy men (ages 19-35) were divided into 3 groups based on whether they were sedentary (SED,<2 h/week) or endurance trained (ET,>6 h/week...

journal_title：International journal of sports medicine

authors： Matelot D,Schnell F,Khodor N,Endjah N,Kervio G,Carrault G,Thillaye du Boullay N,Carre F

更新日期：2016-09-01 00:00:00

abstract：:The purpose of this study was to examine whether lower body positive pressure (LBPP) could improve maximal performance in paraplegic subjects (P). LBPP may diminish venous blood pooling (VBP) below the lesion and, therefore, support the redistribution of blood during exercise. Twelve male P subjects with complete spin...

journal_title：International journal of sports medicine

authors： Hopman MT,Kamerbeek IC,Pistorius M,Binkhorst RA

更新日期：1993-10-01 00:00:00

abstract：:We recently demonstrated that creatine supplementation increased some features of lung allergic sensitization in mice. On the other hand, other studies have shown that aerobic exercise inhibited allergic airway inflammation and remodeling. We hypothesized that aerobic exercise may decrease the exacerbatory effects of ...

journal_title：International journal of sports medicine

authors： Vieira RP,Duarte AC,Santos AB,Medeiros MC,Mauad T,Martins MA,Carvalho CR,Dolhnikoff M

更新日期：2009-09-01 00:00:00

abstract：:The purpose of this study was to analyse intramuscular perfusion response in ultrastructural muscle lesions, by applying contrast-enhanced ultrasound (CEUS) to a delayed onset muscle soreness (DOMS) model. Results of this analysis were compared to high-resolution 3 Tesla MRI T2-weighted sequences. 14 healthy participa...

journal_title：International journal of sports medicine

authors： Kellermann M,Heiss R,Swoboda B,Gelse K,Freiwald J,Grim C,Nagel A,Uder M,Wildner D,Hotfiel T

更新日期：2017-10-01 00:00:00

abstract：:This study evaluated the respiratory effects of a single dive in children. Eighteen young divers and 18 controls participated in our study (age range: 9 - 13 years). Volumes and expiratory flow rates were measured 20 minutes before and 10 minutes after one air dive (3 meters, 25 minutes). Before the dive, no differenc...

journal_title：International journal of sports medicine

authors： Lemaître F,Tourny-Chollet C,Hamidouche V,Lemouton MC

更新日期：2006-11-01 00:00:00

abstract：:We investigated the influence of autonomic blockade (AB) on the left ventricular (LV) diastolic function at rest (R) and during bicycle exercise (EX) in eight endurance-trained (TR) and ten untrained subjects (UT). Two-dimensional and M-mode echocardiography at the parasternal long axis were performed at rest and duri...

journal_title：International journal of sports medicine

authors： Niess A,Roecker K,Mayer F,Heitkamp HC,Dickhuth HH

更新日期：1996-11-01 00:00:00

abstract：:As golf grows in popularity, golf related injuries have increased. The purpose of this study was to calculate and compare upper body kinematics of healthy male golfers from different skill levels. Kinematic data were obtained from 18 professional, 18 low handicap, 18 mid handicap and 18 high handicap golfers with an o...

journal_title：International journal of sports medicine

authors： Zheng N,Barrentine SW,Fleisig GS,Andrews JR

更新日期：2008-06-01 00:00:00

abstract：:Female runners are reported to be more prone to develop specific knee joint injuries than males. It has been suggested that increased frontal plane joint loading might be related to the incidence of these knee injuries in running. The purpose of this study was to evaluate if frontal plane knee and hip joint kinematics...

journal_title：International journal of sports medicine

authors： Gehring D,Mornieux G,Fleischmann J,Gollhofer A

更新日期：2014-02-01 00:00:00

abstract：:We investigated the effects of hypoxia on matched-severe intensity exercise and on the parameters of the power-duration relationship. Fifteen trained subjects performed in both normoxia and normobaric hypoxia (FiO2=0.13, ~3000 m) a maximal incremental test, a 3 min all-out test (3AOT) and a transition from rest to an ...

journal_title：International journal of sports medicine

authors： Sousa AC,Millet GP,Viana J,Milheiro J,Reis V

更新日期：2021-01-18 00:00:00

abstract：:The aim of this study was to establish the presence of postural deficits in subjects with chronic ankle instability (CAI) and to assess the effect of an 8-week balance training program on dynamic postural control. A total of 43 subjects with CAI and 31 controls participated in this case-control study. Participants wit...

journal_title：International journal of sports medicine

authors： De Ridder R,Willems TM,Vanrenterghem J,Roosen P

更新日期：2015-06-01 00:00:00

abstract：:The aim of the present study was to compare the effects of using different intensities and types of aerobic exercise (i. e., cycle ergometer or running) during concurrent training on neuromuscular adaptations. A total of 44 young women were randomly assigned to 1 of 4 groups: concurrent strength and continuous running...

journal_title：International journal of sports medicine

authors： Silva RF,Cadore EL,Kothe G,Guedes M,Alberton CL,Pinto SS,Pinto RS,Trindade G,Kruel LF

更新日期：2012-08-01 00:00:00

abstract：:The purpose of this study was to determine whether preferred pedal rate (PPR) could be used as an index of cycling performance. Thirteen competitive cyclists cycled at PPR during a graded test and a supra-threshold constant power test (CPT). The results showed that PPR values reported in CPT were correlated to both pe...

journal_title：International journal of sports medicine

authors： Nesi X,Bosquet L,Pelayo P

更新日期：2005-06-01 00:00:00

abstract：:Here, we compared the maximal lactate steady state velocity (vMLSS) estimated from a single-visit protocol (v5×2000) to the traditional multi-day protocol (vMLSS). Furthermore, we determined whether there was a lactate steady state during the time limits (Tlim) at vMLSS or v5×2000. Eight runners completed a half marat...

journal_title：International journal of sports medicine

authors： Legaz-Arrese A,Carranza-García LE,Serrano-Ostáriz E,González-Ravé JM,Terrados N

更新日期：2011-11-01 00:00:00

abstract：:The purpose of this study was to establish if provision of CHO altered the mucosal immune and salivary cortisol responses to intermittent exercise in the heat. In a double-blind design, 10 males undertook soccer-specific intermittent exercise on a motorized treadmill on 2 occasions, each over 90 min and separated by 1...

journal_title：International journal of sports medicine

authors： Sari-Sarraf V,Doran DA,Clarke ND,Atkinson G,Reilly T

更新日期：2011-09-01 00:00:00

abstract：:Although analysis of lactate concentrations with a Yellow Springs Instruments (YSI) automated analyzer has become very popular in Sports Medicine, the accuracy and reliability of this technique has not been carefully studied. Additionally, the influence of a common lysing agent Triton X-100 (TX) on blood lactate measu...

journal_title：International journal of sports medicine

authors： Bishop PA,Smith JF,Kime JC,Mayo JM,Tin YH

更新日期：1992-01-01 00:00:00

abstract：:Controversy exists as to whether plasma volume (PV) expansion has the potential to increase maximal oxygen uptake (VO2max). In the present study, VO2max and exercise time to fatigue were measured in nine untrained men when plasma volume (PV) was normal and then again on the next day following two levels of PV expansio...

journal_title：International journal of sports medicine

authors： Coyle EF,Hopper MK,Coggan AR

更新日期：1990-04-01 00:00:00

abstract：:The purpose of this study was to evaluate the accuracy and the repeatability of a new running computer system (RS800sd, Polar, Kempele, Finland) which included the measurement of running speed (RS) and stride rate (SR). Eight well-trained triathletes participated in this study. First, they completed an incremental con...

journal_title：International journal of sports medicine

authors： Hausswirth C,Le Meur Y,Couturier A,Bernard T,Brisswalter J

更新日期：2009-05-01 00:00:00

abstract：:Thirty-three untrained subjects of both sexes, 18-31 years of age, performed several tests on cycle ergometers. Maximal aerobic power (MAP) was obtained in a progressive work test. Maximal aerobic capacity (MAC) was measured in a 90-min maximal test and was computed as the total work output during that period. Two all...

journal_title：International journal of sports medicine

authors： Boulay MR,Lortie G,Simoneau JA,Hamel P,Leblanc C,Bouchard C

更新日期：1985-12-01 00:00:00

abstract：:This study examined the relationship between ratings of perceived exertion (RPE, CR-10), heart rate (HR), peak blood lactate (La peak), and immersion (IM) parameters in 17 elite synchronized swimmers performing 30 solo and duet routines during competition. All were video recorded (50 Hz) and an observational instrumen...

journal_title：International journal of sports medicine

authors： Rodríguez-Zamora L,Iglesias X,Barrero A,Chaverri D,Irurtia A,Erola P,Rodríguez FA

更新日期：2014-05-01 00:00:00

abstract：:Training effects on peak oxygen consumption (VO2), specific to the mode of movement, are well-known in exercise training of young, healthy adults. However, these specific training effects were never studied in patients with coronary artery disease, but may be important in the evaluation of training effects of cardiac ...

journal_title：International journal of sports medicine

authors： Nieuwland W,Berkhuysen MA,Landsman ML,Lie KI,Rispens P

更新日期：1998-07-01 00:00:00

abstract：:The purpose of this investigation was to determine the oxygen consumption, heart rate and plasma lactate responses at the fatigue threshold (FT) and estimate the length of time the FT could be maintained. Ten adult males (mean age +/- SD = 21.1 +/- 1.3 yrs) volunteered to perform a maximal treadmill test and FT test. ...

journal_title：International journal of sports medicine

authors： Housh TJ,Johnson GO,McDowell SL,Housh DJ,Pepper M

更新日期：1991-06-01 00:00:00

abstract：:Alpine spelunking is practiced in darkness, isolation, cold and high humidity. In this paper we study the acute haematological effects of prolonged strenuous activity in five spelunkers who spent about 20 hours in a 700-meter deep cave without resting much or sleeping. On four occasions, we measured their red cell cou...

journal_title：International journal of sports medicine

authors： Stenner E,Piccinini C,Biasioli B,Gianoli E,Bussani A,Delbello G

更新日期：2007-09-01 00:00:00

abstract：:The present study was designed to examine the effects of administration of a GABAergic agonist (Baclofen) on run-time to exhaustion in trained and untrained rats, and on some indicators of fatigue. Run-time to exhaustion on a treadmill set at a speed of 25 m.min-1 was significantly increased in both untrained (p < 0.0...

journal_title：International journal of sports medicine

authors： Abdelmalki A,Merino D,Bonneau D,Bigard AX,Guezennec CY

更新日期：1997-02-01 00:00:00

abstract：:Amenorrhea and osteoporosis are strongly associated in female athletes. Amenorrheic women show lower serum levels of brain-derived neurotrophic factor (BDNF) than eumenorrheic women. BDNF is known to regulate bone tissue development and remodeling; thus, athletes with low serum BDNF levels may show low bone mass. This...

journal_title：International journal of sports medicine

authors： Nose S,Yoshino O,Nomoto K,Harada M,Dohi M,Kawahara T,Osuga Y,Fujii T,Saito S

更新日期：2019-04-01 00:00:00

abstract：:The phase angle is used to evaluate nutritional status and is an indicator of cellular health. Cardiorespiratory fitness and body composition are strong indicators of health during adolescence. We aimed to evaluate if body composition and cardiorespiratory fitness have an association with phase angle among adolescents...

journal_title：International journal of sports medicine

authors： Langer RD,de Fatima Guimarães R,Gonçalves EM,Guerra-Junior G,de Moraes AM

更新日期：2020-08-01 00:00:00

abstract：:Prior research about the effects of the amount of exercised muscle mass upon cardiovascular responses (CVR) has neglected a potential bias related to total exercise and concentric/eccentric duration. Autonomic responses and perceived exertion (RPE) were compared in resistance exercises performed with larger and smalle...

journal_title：International journal of sports medicine

authors： Matos-Santos L,Farinatti P,P Borges J,Massaferri R,Monteiro W

更新日期：2017-11-01 00:00:00

abstract：:Sports influence the hypothalamus-pituitary-gonadal axis (HPG). The purpose of this study was to analyze the effects of physical stress on qualitative male LH secretion. We evaluated the HPG axis at rest and the LH response to a treadmill exercise (90 % of Vdot;O 2 max) in eight trained (running 50 to 70 km/week) and ...

journal_title：International journal of sports medicine

authors： Di Luigi L,Guidetti L,Baldari C,Fabbri A,Moretti C,Romanelli F

更新日期：2002-07-01 00:00:00

abstract：:The purpose of this study was to determine whether a player's physical impairment or activity profile was related to the amount of thermal strain experienced during wheelchair rugby match play. 17 elite wheelchair rugby players played a competitive match, whilst activity profiles, measures of core and skin temperature...

journal_title：International journal of sports medicine

authors： Griggs KE,Havenith G,Price MJ,Mason BS,Goosey-Tolfrey VL

更新日期：2017-03-01 00:00:00

abstract：:Secretory IgA (S-IgA) levels in stimulated salvia were measured before and after a maximal treadmill test in a population of 175 young adults (84 men, 91 women). Habitual physical activity levels of this population were measured by a standardized interview, and scores were obtained for the amount of time and intensity...

journal_title：International journal of sports medicine

authors： Schouten WJ,Verschuur R,Kemper HC

更新日期：1988-08-01 00:00:00