Different types of muscle contractions: Isometric- muscle contraction without a change in the length of muscle Concentric- Muscle applies force as it shortens (lifting) Eccentric- Muscle applies force as it lengthens (lowering) Difference between type 1 and type 2 muscle fibers * Slow-twitch fibers * Type-I fibers * Fatigue resistant * Contract slowly and with relatively little force * Rely primarily on oxidative energy system * Fast-twitch fibers
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extended time periods Exercise-physical activity that is planned‚ structured‚ and repetitive‚ and that results in improvements is fitness Muscular endurance-ability to perform repeated‚ high intensity muscle contraction Muscular strength-maximum force applied with a single muscle contraction Physical activity-any movement that works the larger muscles of the body‚ such as arm‚ leg‚ and back muscles Physical fitness-the body’s ability to carry out daily tasks and still have enough reserve energy
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1.81 2.40 10.0 1.81 2.40 Chart 2: Effect of Stimulus Voltage on Skeletal Muscle Contraction Voltage Active force (g) 0.0 0.00 0.2 0.00 0.8 0.02 1.0 .15 1.5 .43 2.0 .66 2.5 .87 3.0 1.64 3.5 1.19 4.0 1.32 4.5 1.42 5.0 1.51 5.5 1.59 6.0 1.65 6.5 1.70 7.0 1.74 7.5 1.78 8.0 1.81 8.5 1.82 9.0 1.82 9.5 1.82 10.0 1.82 Chart 3: Effect of Stimulus Frequency on Skeletal Muscle Contraction Voltage Stimulus Active Force (g) 8.5 Single 1.83 8.5 Multi 2.40 8.5 Multi 3.00 8
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Mechanomyogram (MMG) is one of the tools used to study the muscle mechanical activities. It is a signal generated from the mechanical vibration due to the muscle contraction. (Islam et al. 2013) The MMG signal can be detected from the body surface that overlying the muscle. This signal can be detected using displacement sensor (Kriz 2008)‚ microphone (Yang‚ Kumar‚ and Arjunan 2009)‚ accelerometer (Xie‚ Guo‚ and Zheng 2010)‚ and piezoelectric (Tanaka 2011). Table 1 shows the summary of bicep brachial
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SYLLABUS 2014-15 PHYSICAL EDUCATION (70 MARKS THEORY) CLASS-XII //2// MONTH PART-A NAME OF THE UNIT 4.6 Specific Sports Program Sports Day< Health Run‚ Run for Fun‚ Run for Specific cause and Run for Unity JULY 5 UNIT-5 Postures 5.1 Meaning and Concept of Correct Postures- Standing and Sitting 5.2 Advantages of Correct Posture 5.3 Common Postural Deformities- Knock Knee; Flat Foot; Round Shoulders; Lordosis‚ Kyphosis‚ Bow legs and Scoliosis
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provided by the breakdown of a chemical called adenosine triphosphate (ATP). As ATP is broken down‚ a phosphate molecule is broken off‚ reducing the phosphate molecules‚ from 3 to 2. This produces adenosine triphosphate. However for the muscles contraction to continue‚ the ATP has to rebuild from ADP and p (ADP+P+= ATP). As this occurs‚ more energy is released and so more energy is available. Therefore‚ when the muscles is used for an extended time the ATP supplies are lowered. This is the most important
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Advanced Pathophysiology & Health Assessment NUR5703 2011 Pre-course Learning Objectives: Fluids and Electrolytes: 1. Identify and describe the composition of the fluid compartments within the body Either Intracellular fluid (ICF- 2/3 of the body’s water) or extracellular fluid (ECF -one third of the body’s water). The two main extracellular fluid compartments are the interstitial fluid and the intravascular fluid‚ which is the blood plasma. Other ECF compartments include the lymph and
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Health and fitness advertisement has become one of the top topics on television‚ newspapers and magazines. Fitness companies are creating new products that promise to improve an individual’s work out with half the time and effort. In a society with little time for exercise the ads grab people’s attention. The advertisement at hand depicts athletic-fit men and women performing the “Shake Weight” ideal motion‚ and mentioning the “Dynamic Inertia Exercise” concept. The Shake Weight is an object like
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Vitamin D span further than just affecting bones and particularly cause muscle weakness. Vitamin D is responsible for aiding in the absorption of other minerals‚ such as calcium. Calcium is a key ligand in muscle contractions‚ thus‚ Vitamin D indirectly can effect muscle contractions. An article published in Nutrition Reviews‚ Vitamin D: an overview of its role in skeletal muscle physiology in children and adolescents‚ analyzes the effect of Vitamin D deficiencies in youth on muscle activity.
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Yoga → Sanskrit word “yuj” : to yoke‚ unite‚ join Refers to union of the individual self with the universal self. Union of the mind‚ body‚ spirit. → Philosophical or mystical system found in India; some dates the beginning of yoga back to Shamanism from 25‚000 BCE‚ pre-dating written history. → 4 main yoga systems: Jnana Yoga: Path of wisdom. Explores the human mind through self-study and pursuit of knowledge‚ and to inquire into one’s own nature. (EX: Who am I?) Bhakti Yoga: Path of devotion
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