Estimating Neural Control from Concentric vs. Eccentric Surface Electromyographic Representations during Fatiguing, Cyclic Submaximal Back Extension Exercises
نویسندگان
چکیده
منابع مشابه
Estimating Neural Control from Concentric vs. Eccentric Surface Electromyographic Representations during Fatiguing, Cyclic Submaximal Back Extension Exercises
Purpose: To investigate the differences in neural control of back muscles activated during the eccentric vs. the concentric portions of a cyclic, submaximal, fatiguing trunk extension exercise via the analysis of amplitude and time-frequency parameters derived from surface electromyographic (SEMG) data. Methods: Using back dynamometers, 87 healthy volunteers performed three maximum voluntary is...
متن کاملSpecificity of back muscle response to submaximal fatiguing contractions.
A fatigue-related decrease in quality and accuracy of the proprioceptive feedback from muscle spindles in the back (e.g. stretch reflexes) may lead to a deterioration of spinal stability, thereby making the spine more vulnerable to external perturbations. Endurance time, tissue oxygenation, reflex latency and blood pressure response were studied in twenty subjects during a submaximal endurance ...
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Eccentric exercises are increasingly prescribed in the assessment and rehabilitation of musculo-skeletal injuries and disorders [1,2]. Under experimental conditions, researchers have also used isokinetic tools for investigating delayed onset muscle soreness (DOMS) induced by repeated eccentric bouts of contraction [3]. A better knowledge of the cardiovascular and metabolic response to maximal i...
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[Purpose] This study aimed to identify changes in muscle activation by comparing muscle activities of the affected side (AS) and non-affected side (NAS) during eccentric and concentric exercises in runners with unilateral Achilles tendinopathy. [Subjects] The study included 18 participants consisting of men and women with chronic Achilles tendinopathy in a single leg who had more than 1 year of...
متن کاملTorque, myoeletric sygnal and heart rate responses during concentric and eccentric exercises in older men.
BACKGROUND The literature reports that the eccentric muscular action produces greater force and lower myoelectric activity than the concentric muscular action, while the heart rate (HR) responses are bigger during concentric contraction. OBJECTIVES To investigate the maximum average torque (MAT), surface electromyographic (SEMG) and the heart rate (HR) responses during different types of musc...
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ژورنال
عنوان ژورنال: Frontiers in Physiology
سال: 2017
ISSN: 1664-042X
DOI: 10.3389/fphys.2017.00299