Search Results
Results 251 - 300 of 1419
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Koyama Yasushi - - 2010
The aim of the study was to compare the kinematics and the timing and amount of electromyographic (EMG) activity during the lat-pull down exercise performed on machines that afforded one, two, or three degrees of freedom for the movement. Seven healthy men (age 29.4 +/- 5.6 years) participated in the ...
Uhl Timothy L - - 2011
Efficacy of knee flexion contracture treatment protocols is dependent on the torque applied to the joint, but to date, no published reports have evaluated the torque applied by the available treatment options. The purpose of this study was to measure the torque applied by physical therapists (PTs), home exercises, and ...
Oyama Sakiko - - 2010
STUDY DESIGN: Controlled laboratory study. OBJECTIVES: To describe and compare scapular and clavicular kinematics and muscle activity during 6 retraction exercises in young healthy adults (mean +/- SD age, 23.2 +/- 2.4 years). BACKGROUND: Based on the association between shoulder injuries and scapular/clavicular movement, muscle activity during various exercises that ...
Dwyer Maureen K - - 2010
Closed kinetic chain exercises are an integral part of rehabilitation programs after lower extremity injury. Sex differences in lower extremity kinematics have been reported during landing and cutting; however, less is known about sex differences in movement patterns and activation of the hip musculature during common lower extremity rehabilitation exercises. ...
Fernandes Linda - - 2010
BACKGROUND AND PURPOSE: No detailed exercise programs specifically for patients with hip osteoarthritis (OA) have been described in the literature. This lack of data creates a gap between the recommendation that people with OA should exercise and the type and dose of exercises that they should perform. The purpose of ...
Guillot Aymeric - - 2010
Although several studies have demonstrated that motor imagery can enhance learning processes and improve motor performance, little is known about its effect on stretching and flexibility. The increased active and passive range of motion reported in preliminary research has not been shown to be elicited by motor imagery training alone. ...
Serres Jennifer L - - 2010
INTRODUCTION: A proof-of-concept demonstration is described in which a DC servomotor (simulating the quadriceps of a human operator) rotated a pulley 90 degrees (simulating knee extension). A pneumatic muscle actuator (PMA) generated an opposing force (antagonist) to the rotating pulley. One application of such a device is for use in ...
Tagesson S - - 2010
The aim of this study was to compare different rehabilitation exercises with respect to dynamic anterior tibial translation and muscle activation 5 weeks after an anterior cruciate ligament (ACL) reconstruction. Another aim was to compare the ACL-reconstructed knee with the ACL-injured and the uninjured knees for differences in anterior tibial ...
Felicio L?lian Ramiro - - 2010
PURPOSE: To evaluate patellar kinematics of volunteers without knee pain at rest and during isometric contraction in open-and closed-kinetic-chain exercises. METHODS: Twenty individuals took part in this study. All were submitted to magnetic resonance imaging (MRI) during rest and voluntary isometric contraction (VIC) in the open and closed kinetic chain ...
Biscarini Andrea - - 2010
We have developed a 2-D analytical biomechanical model for monoarticular open kinetic-chain exercises with lever selectorized equipment, and different relative placement between the joint center of rotation (J) and the center of rotation (C) of the resistance input lever ("off-center" exercises). All the relevant geometrical aspects of such exercises have ...
Hrysomallis Con - - 2010
Abnormal postural alignment can be detrimental to muscle function, is aesthetically unpleasing, and might contribute to joint pain. It has been unclear as to whether stretching or strengthening exercises can correct faulty posture such as abducted scapulae. It has been postulated that short and tight scapular abductor muscles or weak ...
Bellew James W - - 2010
Exercises for the ankle are often used to improve sport performance through balance and stability or to prevent or recover from ankle injury. Ankle training programs often include exercises for the primary muscle of the lateral ankle, the peroneus longus (PL). However, many exercises for the PL are non-weight bearing ...
McCurdy Kevin - - 2010
PURPOSE: To compare EMG activity of selected hip and knee muscle groups in female athletes performing a modified single-leg squat and the 2-leg squat using the same relative intensity. METHODS: Eleven Division I female athletes from a variety of sports (soccer, softball, and track) completed the study. EMG measurements were ...
Williams Nefyn H - - 2010
The pain and disability of hip and knee osteoarthritis can be improved by exercise, but the best method of encouraging this is not known. To develop an evidence-based booklet for patients with hip or knee osteoarthritis, offering information and advice on maintaining activity. Systematic review of reviews and guidelines, then ...
Brughelli Matt - - 2010
OBJECTIVE: To assess the effects of eccentric exercise on optimum lengths of the knee flexors and extensors during the preseason in professional soccer. DESIGN: Twenty-eight athletes from a professional Spanish soccer team (Division II) were randomly assigned to an eccentric exercise intervention group (EG) or a control group (CG). Over ...
Meroni Roberto - - 2010
To compare a passive and an active stretching technique to determine which one would produce and maintain the greatest gain in hamstring flexibility. To determine whether a passive or an active stretching technique results in a greater increase in hamstring flexibility and to compare whether the gains are maintained. Randomized ...
Taylor Portia E - - 2010
In this paper, we describe methods for assessment of exercise quality using body-worn tri-axial accelerometers. We assess exercise quality by building a classifier that labels incorrect exercises. The incorrect performances are divided into a number of classes of errors as defined by a physical therapist. We focus on exercises commonly ...
Queiroz Bergson C - - 2010
Queiroz BC, Cagliari MF, Amorim CF, Sacco IC. Muscle activation during four Pilates core stability exercises in quadruped position. OBJECTIVE: To compare the activity of stabilizing trunk and hip muscles in 4 variations of Pilates stabilizing exercises in the quadruped position. DESIGN: Repeated-measures descriptive study. SETTING: A biomechanics laboratory at ...
Schwartz Fabiano P - - 2010
The present study investigates the behavior of action potential conduction velocity (CV) on each repetition of an isokinetic test set and on each set as a whole. A total of seven healthy men (27.7 ± 2.8 yrs, 1.74 ± 0.06 m, and 79.6 ± 11.0 Kg) performed 3 (three) sets ...
Yoshimitsu Kazuhiro - - 2010
Extreme skeletal muscle atrophy is rampant in astronauts exposed to extended periods of microgravity (muG), and it is one of the main problems in human space exploration. A "Hybrid training" (HYB) method utilizing combined electrical stimulation and voluntary muscle contraction has been developed as a possible solution. A wearable HYB ...
Paschalis Vassilis - - 2010
In this study, we investigated the effect of eccentric exercise on position sense and reaction angle of the elbow and knee flexors. Twelve males underwent two eccentric exercise sessions involving a randomized crossover design. In the first session participants used their elbow flexors and in the other session their knee ...
Paulus David C - - 2010
The ground reaction force during the concentric (raising) portion of the squat exercise was compared to that of isoinertial loading (free weights) for three pneumatically controlled resistance methods: constant resistance, cam force profile, and proportional force control based on velocity. Constant force control showed lower ground reaction forces than isoinertial ...
Lems Willem F - - 2010
Osteoarthritis (OA) of the knee is a common chronic disease leading to increased morbidity and reduced quality of life. Although exercise therapy has been shown to be beneficial for both pain and physical functioning, its underlying mechanism is not fully understood. However, a recent study found an exercise-induced increase in ...
Helmark Ida C - - 2010
The microdialysis method was applied to the human knee joint with osteoarthritis (OA) in order to reveal changes in biochemical markers of cartilage and inflammation, intraarticularly and in the synovium, in response to a single bout of mechanical joint loading. Thirty-one female subjects with OA of the knee were randomized ...
Tok Fatih - - 2011
The aim of this study was to evaluate effects of electrical stimulation combined with continuous passive motion (CPM-ES) versus isometric exercise on symptoms, functional capacity, quality of life, muscle strength, knee and thigh circle measurements, and balance in knee osteoarthritis (OA). This is a randomized clinical trial. The study was ...
Escamilla Rafael F - - 2010
BACKGROUND: Although weight bearing lunge exercises are frequently employed during anterior cruciate ligament and posterior cruciate ligament rehabilitation, cruciate ligament tensile forces are currently unknown while performing forward and side lunge exercises with and without a stride. METHODS: Eighteen subjects used their 12 repetition maximum weight while performing a forward ...
Thiengwittayaporn Satit - - 2009
OBJECTIVE: To compare the accuracy when osteoarthritic knee patients do quadriceps isometric exercise using quadriceps education device (QED) and not using QED after being instructed on the exercise program by doctors. MATERIAL AND METHOD: A randomized controlled study was conducted. Sixty patients were divided into 2 groups, QED group (patients ...
Adouni M - - 2009
Effective management of knee joint disorders demands appropriate rehabilitation programs to restore function while strengthening muscles. Excessive stresses in cartilage/menisci and forces in ligaments should be avoided to not exacerbate joint condition after an injury or reconstruction. Using a validated 3D nonlinear finite element model, detailed biomechanics of the entire ...
Krause David A - - 2009
Weight-bearing exercises are frequently used to train and strengthen muscles of the hip. These exercises have been advocated in the rehabilitation of a variety of hip and knee dysfunctions. Limited evidence is available to describe the level of muscle activation occurring with specific weight-bearing exercises. The purpose of this study ...
Holden Melanie A MA Arthritis Research Campaign National Primary Care Centre, Keele University, Staffordshire, UK. - - 2009
Within the UK, differences exist between physical therapists' use of exercise for patients with knee osteoarthritis (OA) and recent exercise recommendations. This may be explained by their underlying attitudes and beliefs. We aimed to describe UK physical therapists' attitudes and beliefs regarding exercise and knee OA, and understand and explain ...
Iwamoto Jun - - 2010
BACKGROUND AND AIMS: Lumbar spinal stenosis (LSS), osteoarthritis (OA) of the knee, and osteoporosis are major locomotive diseases in the elderly population. The aim of this study was to examine the effectiveness of exercise in these three diseases. METHODS: We reviewed the relevant literature, i.e., systematic reviews and meta-analyses searched ...
Foroughi Nasim - - 2010
Lower limb dynamic alignment represents the limb position during functional loading conditions and obtains valuable information throughout the gait cycle rather than a single instant in time. This study aims to determine whether dynamic alignment is altered in medial knee osteoarthritis (OA) and how dynamic alignment is related to knee ...
Zhang J F - - 2009
Legg-Calvé-Perthes disease (LCPD) is a significant problem in healthcare because it so commonly affects young adults and immature athletes, primarily gymnasts. In this paper, a two-degree-of-freedom (2-DOF) hip exoskeleton device was developed for study on an immature animal model of exercise-induced LCPD. The exoskeleton device can reproduce the repetitive actions ...
Wernbom Mathias - - 2009
The purpose of this study was to investigate muscle activity and endurance during fatiguing low-intensity dynamic knee extension exercise with and without blood flow restriction. Eleven healthy subjects with strength training experience performed 3 sets of unilateral knee extensions with no relaxation between repetitions to concentric torque failure at 30% ...
Boettcher Craig E - - 2009
PURPOSE: Supraspinatus strengthening is an important part of shoulder rehabilitation programs. Because of the force-couple relationship between supraspinatus and deltoid during shoulder abduction, it has been proposed that the optimal exercise to strengthen supraspinatus is one that would maximize supraspinatus activity while minimizing surrounding muscle activity, particularly deltoid. The aim ...
Bassement Maud - - 2010
This study attempts to characterise the electromyographic activity and kinematics exhibited during the performance of take-off for a pole vaulting short run-up educational exercise, for different expertise levels. Two groups (experts and novices) participated in this study. Both groups were asked to execute their take-off technique for that specific exercise. ...
Tsai Liang-Ching - - 2009
: Changes in knee mechanics immediately after a fatiguing bout of exercise are thought to place an individual at a greater risk for anterior cruciate ligament (ACL) injury. However, the recovery time required to restore normal knee kinetics and kinematics after fatigue has not been established. : The purpose of ...
De Mey Kristof - - 2009
STUDY DESIGN: Controlled laboratory study. OBJECTIVES: To examine the timing of the 3 portions of the trapezius muscle in relation to the posterior deltoid (PD) muscle and in relation to one another during 4 selected shoulder exercises: (1) prone extension, (2) forward flexion in side lying, (3) external rotation in ...
Marques A P - - 2009
We compared the effect of the number of weekly repetitions of a static stretching program on the flexibility, hamstring tightness and electromyographic activity of the hamstring and of the triceps surae muscles. Thirty-one healthy subjects with hamstring tightness, defined as the inability to perform total knee extension, and shortened triceps ...
Maenhout A - - 2010
First, to look for appropriate closed kinetic chain exercises to restore intramuscular imbalance between upper trapezius (UT) and serratus anterior (SA) in overhead athletes. Second, to determine the influence of using diagonal pattern muscle recruitment during knee push up plus (KPP) exercises on scapular electromyographic activity. Single group repeated-measures design. ...
Lunden Jason B - - 2010
The push-up plus exercise is a common therapeutic exercise for improving shoulder function and treating shoulder pathology. To date, the kinematics of the push-up plus exercise have not been studied. Our hypothesis was that the wall push-up plus exercise would demonstrate increased scapular internal rotation and increased humeral anterior translation ...
Nolan Lee - - 2009
The aim of this study was to compare hip strength in sports-active transtibial (TT) amputees, sedentary TT amputees and sports-active non-amputees. Three 'active' (exercising recreationally at least three times per week) TT amputees, four 'inactive' or sedentary TT amputees and nine 'active' able-bodied persons (AB) underwent concentric and eccentric hip ...
Bosomworth Neil J - - 2009
To determine whether physical exercise constitutes a benefit or a risk in the development and progression of knee osteoarthritis. MEDLINE, EMBASE, DARE, ACP Journal Club, and Cochrane databases were searched from registry inception to January 2009 using MeSH headings or text words, including osteoarthritis, arthritis and knee and exercise, physical ...
Herrington Lee - - 2010
Previous research into the effect of patellar taping has found conflicting results and when studies have found positive findings these effects appear to be negated by exercise. The purpose of this study was to re-examine the effect of patellar taping on patellar position using ultrasound scanning. Twelve asymptomatic subjects (six ...
Ribeiro Fernando - - 2010
This study aimed to test the hypotheses that knee position sense declines with age and that regular exercise can attenuate that decline. This cross-sectional study encompassed 69 older and 60 young adults divided in four groups (exercised-old, N=31; non-exercised-old, N=38; exercised-young, N=35; non-exercised-young, N=25) according to chronological age and exercise ...
Yilmaz Ozlem O - - 2010
This study was designed to investigate the additive effect of EMG-biofeedback in rehabilitation of knee osteoarthritis. Forty patients, aged 45-70, with the diagnosis of knee osteoarthritis according to American College of Rheumatology (ACR) criteria were taken into the study. The patients were randomly assigned in two groups. One group (n ...
Chance-Larsen Kenneth - - 2010
Hamstring injuries are common. The hamstrings and gluteus maximus (GM) work as synergists during hip extension. When contraction of GM is delayed relative to Biceps Femoris (BF) the hamstrings may be predisposed to injury due to increased demand. This study investigated whether specific training affected neuromuscular control of BF and ...
Boucher Tony - - 2009
Neuromuscular electrical stimulation initiated by a surface electromyographic biofeedback threshold (sEMG-triggered NMES) has been studied in populations of patients with neurological problems, but has not been applied to orthopedic populations. The purpose of this single-blinded, randomized clinical trial was to investigate sEMG-triggered NMES on knee extension active range of motion ...
Youdas James W - - 2009
CONTEXT: Posterior calf stretching is believed to improve active ankle dorsiflexion range of motion (AADFROM) after acute ankle-inversion sprain. OBJECTIVE: To describe AADFROM at baseline (postinjury) and at 2-wk time periods for 6 wk after acute inversion sprain. DESIGN: Randomized trial. SETTING: Sports clinic. PARTICIPANTS: 11 men and 11 women ...
Hubbard Tricia J - - 2009
OBJECTIVE: To understand the mechanical and sensorimotor adaptations that may occur with ankle osteoarthritis (OA). DESIGN: Case-control. SETTING: Biodynamics research laboratory. PARTICIPANTS: Subjects with ankle OA (n=8; 4 males, 4 females) were matched to healthy controls (n=8; 4 males, 4 females). INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Mechanical joint stability ...
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