The effect of bracing on patella alignment and patellofemoral joint contact area.

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:To investigate the effects of speech production on physiological responses during sub maximal exercise of various intensities. METHODS:Three constant levels running at work intensities corresponding to 65%, 75%, and 85% of the subjects' (N = 14) VO(2) max were performed with and without talking. These loads we...

journal_title：Medicine and science in sports and exercise

authors： Meckel Y,Rotstein A,Inbar O

更新日期：2002-08-01 00:00:00

abstract：PURPOSE:To observe the effects of exercise training on plasminogen activator inhibitor, type-1 (PAI-1), tissue plasminogen activator (tPA), and associated metabolic variables in sedentary men and women. METHODS:A randomized, controlled experimental design was used to examine the influence of 10 d of moderate-intensity...

journal_title：Medicine and science in sports and exercise

authors： Bodary PF,Yasuda N,Watson DD,Brown AS,Davis JM,Pate RR

更新日期：2003-11-01 00:00:00

abstract：:Cardiovascular responses were obtained during cycling with graded levels of lower-body positive pressure (LBPP) applied to the exercising limbs. Seven men performed four incremental work rate (25 W.min-1) exercise (IWREx) tests to their limit of tolerance while exposed to 0, 15, 30, or 45 Torr LBPP. They also performe...

journal_title：Medicine and science in sports and exercise

authors： Williamson JW,Crandall CG,Potts JT,Raven PB

更新日期：1994-06-01 00:00:00

abstract：PURPOSE:Quadriceps strength deficits persist for years after anterior cruciate ligament (ACL) reconstruction, and patients with these deficits often shift torque demands away from the knee extensors to the hip during functional tasks. However, it is not clear how quadriceps strength deficits may affect hip strength. Th...

journal_title：Medicine and science in sports and exercise

authors： Bell DR,Trigsted SM,Post EG,Walden CE

更新日期：2016-10-01 00:00:00

abstract：PURPOSE:This study examines heavy episodic alcohol consumption and associated harms in collegiate athletes in the United States. The factors which may promote or deter such use are explored. METHODS:Randomly selected students in a nationally representative sample of 4-yr colleges in the United States completed self-re...

journal_title：Medicine and science in sports and exercise

authors： Nelson TF,Wechsler H

更新日期：2001-01-01 00:00:00

abstract：PURPOSE:The study purposes were 1) to study the differences between perceived exertion measured by a generic (/10) or an individualized (/max value obtained during the test) score on the OMNI cycle scale (OMNImax and OMNI10) and the actual effort (peak oxygen consumption) at different stages of a maximal cycling test i...

journal_title：Medicine and science in sports and exercise

authors： Lemay V,O'Loughlin J,Tremblay A,Mathieu ME

更新日期：2013-05-01 00:00:00

abstract：INTRODUCTION:Exercise with limb blood flow restriction (BFR) is a very popular exercise modality in Japan and is spreading widely to the rest of the world. The underlying principle of this training modality is that under the conditions of restricted blood flow, even low-intensity exercise can provide significant muscle...

journal_title：Medicine and science in sports and exercise

authors： Renzi CP,Tanaka H,Sugawara J

更新日期：2010-04-01 00:00:00

abstract：:This study characterizes exercise-induced lipid peroxidation during graded aerobic exercise in seven healthy men and women (36.4 +/- 3 yr). Levels of ethane and pentane in expired breath during cardiopulmonary exercise stress testing were measured at rest, lactic acidosis threshold (LAT), maximal exercise (VO2max), an...

journal_title：Medicine and science in sports and exercise

authors： Leaf DA,Kleinman MT,Hamilton M,Barstow TJ

更新日期：1997-08-01 00:00:00

abstract：PURPOSE:Apnea divers hyperinflate the lung by taking a deep breath followed by glossopharyngeal insufflation. The maneuver can lead to symptomatic arterial hypotension. We tested the hypotheses that glossopharyngeal insufflation interferes with cardiac function further reducing cardiac output (CO) using cardiac magneti...

journal_title：Medicine and science in sports and exercise

authors： Batinic T,Utz W,Breskovic T,Jordan J,Schulz-Menger J,Jankovic S,Dujic Z,Tank J

更新日期：2011-11-01 00:00:00

abstract：PURPOSE:To validate the 7-d Physical Activity Recall (PAR) telephone interview version and its activity intensity categories. METHODS:Seventy-four adults (47 women, 27 men), ranging in age (18-67) and activity levels, were interviewed by phone and in-person using the same PAR protocol. Each participant wore a TriTrac-...

journal_title：Medicine and science in sports and exercise

authors： Hayden-Wade HA,Coleman KJ,Sallis JF,Armstrong C

更新日期：2003-05-01 00:00:00

abstract：PURPOSE:Isokinetic strength is normally measured for a single range of motion and body position. This study quantified the variability, between individuals, in the relationships between a single peak knee extension moment and the isokinetic extension moments measured for different hip angles and ranges of knee motion. ...

journal_title：Medicine and science in sports and exercise

authors： Pavol MJ,Grabiner MD

更新日期：2000-05-01 00:00:00

abstract：PURPOSE:Heart rate variability (HRV) indices are powerful independent prognostic factors of cardiovascular events and all cause mortality in patients with chronic heart failure (CHF). This study evaluates the influence of lifestyle on HRV in CHF patients. METHODS:Thirty-nine CHF patients (33 men, ischemic/dilated card...

journal_title：Medicine and science in sports and exercise

authors： Garet M,Degache F,Pichot V,Duverney D,Costes F,DA Costa A,Isaaz K,Lacour JR,Barthélémy JC,Roche F

更新日期：2005-08-01 00:00:00

abstract：:Existing cross-sectional studies on plasma catecholamine activity provide no support for the concept that a markedly high level of aerobic fitness modifies sympathoadrenal response to an acute psychological challenge in humans. In contrast, compromised sympathetic nervous system activity has been observed in individua...

journal_title：Medicine and science in sports and exercise

authors： Sothmann MS,Hart BA,Horn TS

更新日期：1991-07-01 00:00:00

abstract：:Body composition has become a major field of interest for many exercise and sport scientists as well as clinicians who specialize in the prevention of and rehabilitation from hypokinetic diseases. This paper discusses the state of the art within selected areas of body composition, identifying significant areas of cont...

journal_title：Medicine and science in sports and exercise

authors： Wilmore JH

更新日期：1983-01-01 00:00:00

abstract：:Ten pairs of monozygotic twins of both sexes were submitted to a 20-wk endurance-training program, four and five times per week, 40 min per session, at an average of 80% of the maximal heart rate reserve. Testing and training were performed on cycle ergometers. Maximal aerobic power (MAP in ml O2 X min-1 X kg-1) and v...

journal_title：Medicine and science in sports and exercise

authors： Prud'homme D,Bouchard C,Leblanc C,Landry F,Fontaine E

更新日期：1984-10-01 00:00:00

abstract：PURPOSE:The purpose of study was to determine whether quadriceps/patella and Achilles tendon length and flexibility of the knee extensors and plantar flexors are related to walking and running economy. METHODS:Twenty-one male distance runners were subjects. Quadriceps/patella and Achilles tendon length were measured b...

journal_title：Medicine and science in sports and exercise

authors： Hunter GR,Katsoulis K,McCarthy JP,Ogard WK,Bamman MM,Wood DS,Den Hollander JA,Blaudeau TE,Newcomer BR

更新日期：2011-08-01 00:00:00

abstract：PURPOSE:Resting cardiac vagal modulation (RCVM) and postexercise vagal reactivation (PEVR) are markers of parasympathetic activity. We investigated whether adaptations in these markers to aerobic training are influenced by baseline autonomic control. METHODS:Forty healthy men (19.2 ± 0.8 yr) of similar cardiorespirato...

journal_title：Medicine and science in sports and exercise

authors： Duarte A,Soares PP,Pescatello L,Farinatti P

更新日期：2015-06-01 00:00:00

abstract：PURPOSE:This study aimed to determine the effect of acute exercise on the proliferation and expression of activation markers on T-lymphocytes. METHODS:Seventeen well-trained male endurance runners completed 60 min of treadmill running at 95% of ventilatory threshold and a resting, no exercise, control session at the s...

journal_title：Medicine and science in sports and exercise

authors： Green KJ,Rowbottom DG,Mackinnon LT

更新日期：2003-04-01 00:00:00

abstract：:The way in which athletes achieve the necessary height to accomplish the rotational requirements of springboard dives was investigated by focusing upon the take-offs of dives from the forward and reverse groups. Films of eight women in the 3-m final of the 1982 Canadian championship and of five men practicing for the ...

journal_title：Medicine and science in sports and exercise

authors： Miller DI,Munro CF

更新日期：1984-06-01 00:00:00

abstract：:Compared with level walking or running, progressive downhill walking or running requires a decreasing energy cost to some minimum where the cost again increases with further decrements in grade. Margaria estimated this minimum occurs at a -9% grade. In this study an attempt was made to more precisely track the energy ...

journal_title：Medicine and science in sports and exercise

authors： Wanta DM,Nagle FJ,Webb P

更新日期：1993-01-01 00:00:00

abstract：:It is has been suggested that physical activity may increase bone mineral density (BMD) in children, thereby preventing development of osteoporosis later in life. We studied 14 gymnasts, 14 swimmers, and 17 controls to investigate whether participation in different types of sports among girls 7-9 yr of age is associat...

journal_title：Medicine and science in sports and exercise

authors： Cassell C,Benedict M,Specker B

更新日期：1996-10-01 00:00:00

abstract：:A decrease in hepatic lactate dehydrogenase (LDH) activity following endurance training has been a consistent observation. In the present study, we sought to determine whether the training-induced decrease in hepatic LDH activity (pyruvate = substrate) was associated with a shift in the isoenzyme profile and/or altera...

journal_title：Medicine and science in sports and exercise

authors： Sumida KD,Frisch F,Donovan CM

更新日期：1995-04-01 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

abstract：:Exercise represents the primary countermeasure used during spaceflight to maintain or restore maximal aerobic capacity (VO2max), musculoskeletal structure, and orthostatic function. However, no single exercise or combination of prescriptions has proven entirely effective in restoring cardiovascular and musculoskeletal...

journal_title：Medicine and science in sports and exercise

authors： Convertino VA

更新日期：1996-08-01 00:00:00

abstract：PURPOSE:To determine whether a low-cost, commercially available global positioning system (GPS) can be used to study outdoor walking of healthy subjects, allowing the detection of walking and resting (nonwalking) periods and the accurate estimation of speed and distance of each walking periods. METHODS:The same EGNOS-...

journal_title：Medicine and science in sports and exercise

authors： Le Faucheur A,Abraham P,Jaquinandi V,Bouyé P,Saumet JL,Noury-Desvaux B

更新日期：2007-09-01 00:00:00

abstract：PURPOSE:The objectives of the present study were to examine gender differences and between-day variability of isometric hamstring muscle peak torque and perceived exertion. METHODS:Subjects included 20 healthy, college-aged male (N = 10) and female (N = 10) volunteers. Each subject completed five maximal voluntary iso...

journal_title：Medicine and science in sports and exercise

authors： Pincivero DM,Campy RM,Coelho AJ

更新日期：2003-10-01 00:00:00

abstract：PURPOSE:Little is known of the potential long-term gait alterations that occur after an anterior cruciate ligament (ACL) reconstruction. In particular, variables, such as impact loading, which have been previously associated with joint deterioration, have not been studied in walking and running after an ACL reconstruct...

journal_title：Medicine and science in sports and exercise

authors： Noehren B,Wilson H,Miller C,Lattermann C

更新日期：2013-07-01 00:00:00

abstract：PURPOSE:To quantify variations in plantar pressure variables in healthy adults across five cardiovascular exercises. METHODS:Ten young (19-35 yr old) and 10 middle-aged (45-60 yr old) individuals participated. After equipment familiarization, plantar pressure data were recorded during walking, running, elliptical trai...

journal_title：Medicine and science in sports and exercise

authors： Burnfield JM,Jorde AG,Augustin TR,Augustin TA,Bashford GR

更新日期：2007-11-01 00:00:00

abstract：PURPOSE:To examine serum creatine kinase (CK) activity after resistance exercise bouts with different rest intervals between sets and exercises in high responding (HR) and normal responding (NR) subjects. METHODS:During each resistance exercise bout, three sets with 10-repetition maximum (10RM) loads were completed fo...

journal_title：Medicine and science in sports and exercise

authors： Machado M,Willardson JM

更新日期：2010-07-01 00:00:00