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Effects of motorized vs non-motorized treadmill training on hamstring/quadriceps strength ratios
Concentric eccentric conventional
2015/5/8
Previous literature suggests that muscular involvement and
biomechanical changes elicit different responses between overground and treadmill training.
The effect of mild symptomatic patellar tendinopathy on the quadriceps contractions and the Fente motion in elite fencers
Patellar tendinopathy elite fencers isokinetic kinematics
2015/5/8
To investigate how mild symptomatic patellar tendinopathy (PT) affects quadriceps contractions and the Fente motion, this case-control study examined elite fencers who continue to train and play fully...
Changes in Quadriceps Muscle Activity During Sustained Recreational Alpine Skiing
Muscle coordination recruitment electromyography wavelet analysis
2015/5/6
During a day of skiing thousands of repeated contractions take place. Previous research on prolonged recreational alpine skiing show that physiological changes occur and hence some level of fatigue is...
Inhomogeneous Quadriceps Femoris Hypertrophy in Response to Strength and Power Training
REGION-SPECIFIC HYPERTROPHY CROSS-SECTIONAL AREA MUSCLE VOLUME JUMP SQUAT BACK SQUAT
2017/4/20
Introduction: Previous studies have reported inhomogeneous changes in quadriceps femoris (QF) cross-sectional area (CSA) in response to strength training. It is assumed that these differential changes...
Rapid Hamstrings/Quadriceps Strength in ACL-Reconstructed Elite Alpine Ski Racers
RATE OF FORCE DEVELOPMENT SEX DIFFERENCES LIMB ASYMMETRY KNEE STABILITY
2017/4/14
Purpose: Because of the importance of hamstrings (HAM) and quadriceps (QUAD) strength for anterior cruciate ligament (ACL) injury prevention and the high incidence of ACL injury in ski racing, HAM and...
Assessment of the Quadriceps Femoris Muscle in Women after Injury Induced by Maximal Eccentric Isokinetic Exercise with Low Angular Speed
Muscle damage torque electromyography magnetic resonance imaging creatine kinase
2015/3/30
The objectives of this study were to propose a model for exercise- induced muscle injury by way of a maximal eccentric isokinetic exercise at low angular speed, and assess the time course of functiona...
CONTRIBUTION OF HAMSTRING FATIGUE TO QUADRICEPS INHIBITION FOLLOWING LUMBAR EXTENSION EXERCISE
Superimposed burst technique electromyography spectral median frequency
2015/3/18
The purpose of this study was to determine the contribution of hamstrings and quadriceps fatigue to
quadriceps inhibition following lumbar extension exercise. Regression models were calculated consi...
Developments in the Use of the Hamstring/Quadriceps Ratio for the Assessment of Muscle Balance
Muscle contraction isokinetic thigh muscle balance
2015/3/10
sokinetic moment ratios of the hamstrings (H) and quadriceps (Q) muscle groups, and their implication in muscle imbalance, have been investigated for more than three decades. The conventional concentr...
Longer Electromechanical Delay Impairs Hamstrings Explosive Force versus Quadriceps
KNEE JOINT MUSCLE STRENGTH ELECTROMYOGRAPHY RATE OF FORCE DEVELOPMENT ANTERIOR CRUCIATE LIGAMENT
2017/5/23
Explosive neuromuscular performance refers to the ability to rapidly increase force in response to neuromuscular activation. The lower explosive force production of the hamstrings relative to the quad...
The comparison of maximal and endurance strength of quadriceps femori in trained and untrained elderly
comparison maximal endurance strength quadriceps femori trained untrained elderly
2013/10/1
The purpose of this study was to examine the differences in knee extensor maximal and endurance strength in elderly. Sixteen healthy elderly served as subjects, eight of them trained , age 61.0±8.9 yr...
Rapid Hamstrings/Quadriceps Strength Capacity in Professional Soccer Players with Different Conventional Isokinetic Muscle Strength Ratios
Muscular torque isometric action injury
2015/5/12
Muscle strength imbalance can be an important factor in hamstrings muscle strain. A hamstrings/quadriceps (H/Q) strength ratio based on concentric peak torque values (Hcon:Qcon) has traditionally been...
Quadriceps Activation Following Knee Injuries: A Systematic Review
arthrogenic muscle inhibition voluntary activation twitch interpolation superimposed burst central activation ratio
2010/9/8
Arthrogenic muscle inhibition is an important underlying factor in persistent quadriceps muscle weakness after knee injury or surgery.To determine the magnitude and prevalence of volitional quadriceps...
EMG and metabolic-based prediction of force in paralyzed quadriceps muscle under interrupted simulation
EMG and metabolic-based prediction force paralyzed quadriceps muscle interrupted simulation
2010/1/7
EMG and metabolic-based prediction of force in paralyzed quadriceps muscle under interrupted simulation.
Recruitment, force and fatigue characteristics of quadriceps muscles of paraplegics, isometrically activated by surface FES
quadriceps muscles paraplegics surface FES
2010/1/7
Recruitment, force and fatigue characteristics of quadriceps muscles of paraplegics, isometrically activated by surface FES.
The comparison of quadriceps muscle strength between sprint runner and normal un-trained individuals (Determined by Kin-Com)
Isokinetic dynamometer Sprint runners Normal un-trained individuals Maximum torque quadriceps concentric Maximum torque quadriceps eccentric
2010/1/5
Introduction: It is suggested that quadriceps muscle has an important role in stability & mobility of Knee joint in athletics and normal individuals; therefore, the purpose of this study was evaluatio...