Electromyography

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    The electromyography (EMG) has the capacity of many uses in the clinical setting for gait analysis in the diagnosis of neural muscular disorders such as cerebral palsy. This method was chosen in our experiment to record and examine the electrical activity of the skeletal muscle during gait movement during treadmill and over ground walking. In our experiment we specifically looked at the lower extremity with overactive quadriceps and underactive. Common to use to EMG to identify precisely when a specific muscle is activated during the movement We used surface EMG we carefully cleaned the surface of the skin with alcohol pads, then the electrodes were attached onto the skin on the lower extremity of the subject. On both legs, one…

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    Electromyography

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    INTRODUCTION: An individual’s level of strength is not only dependent upon on the muscles involved in an action but also the nervous systems ability to activate the appropriate muscles at any one time. It is well known that resistance training can lead to an increase in maximal contractile muscle force (Aagaard et al., 2002) however; this adaptation is not primarily explained by an increase in muscle volume or muscle cross-sectional area but adaptive changes within the nervous system.…

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    Electromyography is a procedure that assesses the muscles and the motor neurons that control them. The motor neurons that control the muscles transmit electrical signals that cause the muscles to contract. A thin needle with an electrode on the end will be place through the skin into the muscle. The electrode picks up the electrical signal from the muscle. The patient will be asked to use the muscle by contracting a muscle or by bending the arm. EMG measures the electrical activity of muscle…

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    The protein that was concluded was dystrophin. The disease that is associated with this protein is Duchenne. Duchenne is referred to as DMD and is associated with muscular dystrophy. DMD is one of the most common gene malfunctions and is causes by having a problem with a gene which makes up the dystrophin protein. Gupta (2014) explained that when the protein is functioning properly, muscle cells are able to keep their shape and strength, but without it they can begin to break down and become…

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    Electromyography Analysis

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    During lab on Tuesday October 20, we experimented with the electromyography. An electromyography, or EMG, is a diagnostic procedure to assess the health of muscles and the nerve cells that control them (Mayo Clinic). An EMG uses tiny devices called electrodes to transmit or detect electrical signals. EMG results can reveal nerve dysfunction, muscle dysfunction or problems with nerve to muscle signal transmissions. According to the U.S. National Library of Medicine, the introduction of the EMG…

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    Muscle Tissue Analysis

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    Introduction: The use of electromyography (EMG) to monitor muscle tissue from surface skin provides important information about the components of electrical activity—namely motor unit (MU) activation—during a muscle contraction (Cashaback, Cluff & Potvin, 2013). Observing electrical activity of a muscle with EMG is a user friendly and non-invasive tool researchers use when investigating muscle physiology (Camata et al., 2009). EMG is commonly used to correlate EMG signal with fatigue by…

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    Abstract: Duchenne Muscular Dystrophy (DMD) is a X-linked recessive condition in which a defective gene called dystrophin is inherited. Dystrophin is an essential protein for muscular strength and stability. DMD affects 1 out of 3600 males and the symptoms are more severe in males than in females. Symptoms of DMD include skeletal deformities, fatigue, learning and intellectual developmental delay, difficulty breathing, and heart disease. Diagnosing DMD is done through serum CPK, muscle biopsy,…

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    Isometric Force Lab Report

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    Experiment 1 showed the isometric force generated by the ADM muscle of the test subject was able to be measured accurately and quantified into EMG activity as shown in results from Table 1. The established threshold of 2.2mA was used for subsequent increases in stimulation from the threshold to show that more motor units of both Type I and Type II were simultaneously being recruited. The size of the twitch force at 20% above the threshold, 2.6mA, was not a drastic jump as was 40%, 3.2mA, which…

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    Myotonic dystrophy type 1 (DM1) or Steinert disease is a rare genetic multisystem disorder. Typical symptoms are delayed relaxation of muscles (myotonia) and slowly increased muscle weakness (dystrophy). It also affects the eye, heart, endocrine system, and central nervous system [1]. The prevelance is estimated at 1:10,000 [2]. DM1 is caused by an unstable (CTG) microsatellite repeat expansion within the DMPK (dystrophia myotonica protein kinase) 3- untranslated region (3’-UTR) in chromosome…

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    B – dystrophin is part of a group of a protein complex that works together to strengthen muscle fibres and protect them from injury as muscles contract and relax. Dystrophin is produced by the DMD gene and mutations cause Duchenne and Becker muscular dystrophies, which lead to reduced amounts of dystrophin in skeletal muscle cells. This reduced amount of dystrophin causes muscles to weaken and damage over time, causing the build up of fat rather than muscle. This pseudohypertrophy causes the…

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