PURPOSE The aim of this study was to compare the effect of resistance exercise with three different methods on integrated electromyography (IEMG) and metabolic responses in recreational athletes. METHODS Twenty four males (mean 23.59±0.87 years) were randomly assigned to three experimental groups. Participants performed knee extension exercises: Slow (SL: 3-3, 3s for each concentric and eccen...

The neural command from motor neurons to muscles - sometimes referred to as the neural drive to muscle - can be identified by decomposition of electromyographic (EMG) signals. This approach can be used for inferring the voluntary commands in neural interfaces in patients with limb amputations. This paper proposes for the first time an innovative method for fully automatic and real-time intramus...

Important information gained using dynamic electromyography is to accurately define the muscle action and phase timing within the gait cycle. Human gait relies on selective timing and intensity of appropriate muscle activations for stability, loading and progression over the supporting foot during stance, and further to advance the limb in swing phase. A traditional clinical practice is to low ...

This study sought to determine whether afferent feedback associated with peripheral muscle fatigue inhibits central motor drive (CMD) and thereby limits endurance exercise performance. On two separate days, eight men performed constant-load, single-leg knee extensor exercise to exhaustion (85% of peak power) with each leg (Leg1 and Leg2). On another day, the performance test was repeated with o...

Influence of Electrode Orientation on Electromyographic Fatigue Indices of the Vastus Lateralis. JOSEPH P. WEIR, KELLY P. MAHONEY, KATHERINE G. HAAN and AMANDA DAVIS. JEPonline 1999, 2(3):15-20. Monitoring of muscle fatigue in the leg extensors can provide valuable information regarding exercise and rehabilitation. Surface electromyography (EMG) can provide objective measures for monitoring fat...

The aim of this study was to investigate the difference in a muscle contraction phase dependence between ipsilateral (ipsi)- and contralateral (contra)-primary motor cortex (M1) excitability during repetitive isometric contractions of unilateral index finger abduction using a transcranial magnetic stimulation (TMS) technique. Ten healthy right-handed subjects participated in this study. We inst...

REASONS FOR PERFORMING STUDY Identifying the underlying problem of equine back pain and diseases of the spine are significant problems in veterinary orthopaedics. A study to validate a preliminary biomechanical model of the equine back based on CT images including longissimus dorsi (LD) muscle is therefore important. OBJECTIVES Validation of the back model by comparing the shortening of LD mu...

Eight moderately active male subjects where tested for peak force in an isometric knee extension test and peak force and rate of force development in an isometric squat test. Both tests where performed at a 100 degrees knee angle and average integrated electromyography (IEMG) was measured from the vastus medialis (VM), vastus lateralis (VL) and biceps femoris (BF) muscles. Subjects performed th...